The free window is not actually free
The manager says the whole morning is available. A standing design review sits inside it and cannot move.
What was asked
Deepa needs the interviews sorted for the backend req — it's in my inbox. Can you handle it? I'm heads-down today.
That is the whole brief. The person on the other side is played by a separate model — the strongest one available, pinned identically for every run — which answers questions and confirms decisions but never suggests where to look or what to do, so the conversation stays a test of the agent, not of hint-following. 2 further replies from them appear in the conversation below.
What it was given
The model started with the whole workspace and no index of what mattered: 83 files in Drive (78 of them resumes, the rest job descriptions, trackers, policies and comp bands), 2 messages in the inbox, 3 events on the calendar. None of it is labelled for the task.
Drive 83 files
- Senior Backend Engineer — JD v1.md
- Senior Backend Engineer — JD v2.md
- Compensation bands 2026 — CONFIDENTIAL.md
- Applicant tracker — SBE-2026-04.md
- Neha Rao — resume.md
- Sara Rao — resume.md
- Diya Rao — resume.md
- Riya Rao — resume.md
- Yash Rao — resume.md
- Anika Rao — resume.md
- Kabir Rao — resume.md
- Aarav Rao — resume.md
- Pooja Rao — resume.md
- Kavya Rao — resume.md
- Rahul Rao — resume.md
- Arjun Rao — resume.md
- Varun Rao — resume.md
- Dev Verma — resume.md
- Dev Joshi — resume.md
- Dev Gupta — resume.md
- Meera Nair — resume.md
- Ishita Rao — resume.md
- Neha Verma — resume.md
- Neha Joshi — resume.md
- Sara Verma — resume.md
- Neha Gupta — resume.md
- Diya Verma — resume.md
- Sara Joshi — resume.md
- Diya Joshi — resume.md
- Sara Gupta — resume.md
- Rohan Iyer — resume.md
- Riya Verma — resume.md
- Yash Verma — resume.md
- Diya Gupta — resume.md
- Riya Joshi — resume.md
- Yash Joshi — resume.md
- Riya Gupta — resume.md
- Yash Gupta — resume.md
- Nikhil Bose — resume.md
- Anika Verma — resume.md
- Vikram Bose — resume.md
- Anika Joshi — resume.md
- Kabir Verma — resume.md
- Aarav Verma — resume.md
- Anika Gupta — resume.md
- Kabir Joshi — resume.md
- Pooja Verma — resume.md
- Aarav Joshi — resume.md
- Kabir Gupta — resume.md
- Pooja Joshi — resume.md
- Aarav Gupta — resume.md
- Kavya Verma — resume.md
- Rahul Verma — resume.md
- Harsh Menon — resume.md
- Pooja Gupta — resume.md
- Tanvi Reddy — resume.md
- Kavya Joshi — resume.md
- Rahul Joshi — resume.md
- Arjun Verma — resume.md
- Kavya Gupta — resume.md
- Rahul Gupta — resume.md
- Arjun Joshi — resume.md
- Varun Verma — resume.md
- Arjun Gupta — resume.md
- Varun Joshi — resume.md
- Varun Gupta — resume.md
- Ananya Reddy — resume.md
- Ishita Verma — resume.md
- Divya Sharma — resume.md
- Ishita Joshi — resume.md
- Priya Sharma — resume.md
- Ishita Gupta — resume.md
- Siddharth Rao — resume.md
- Karthik Menon — resume.md
- Ishaan Kapoor — resume.md
- Aditya Chandra — resume.md
- Sneha Kulkarni — resume.md
- Siddharth Verma — resume.md
- Siddharth Joshi — resume.md
- Siddharth Gupta — resume.md
- Dev Rao — resume.md
- Priya Sharma — resume (2024).md
- SBE-2026-04 shortlist
Inbox 2 messages
- deepa.rao@acme.com — Interviews for SBE-2026-04
- karthik.menon@mailbox.example — Re: interview scheduling — Karthik Menon
Calendar 3 events
- Standup
- Board call
- Design review — Atlas
The conversation
Every step the model took, in order: what it said, which tool it called with which arguments, and exactly what came back. Nothing is paraphrased.
Its reasoning before acting 67 words
gmail_search search mail 0 messages — nothing matched
| query | Deepa backend interviews |
| label | INBOX |
10 unset parameters omitted
[]
No message to the person in this step — it went straight to the tools.
gmail_search search mail 1 message
| query | Deepa |
| label | INBOX |
10 unset parameters omitted
[
{
"id": "msg_00001",
"thread_id": "msg_00001",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "deepa.rao@acme.com",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Interviews for SBE-2026-04",
"body": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UTC — the whole window is yours, but 13:00 is a hard stop, I have a board call straight after. 45 minutes each, no gaps, nothing outside the window.\n\nEveryone through screening on this req gets a slot.\n\nTitle each one 'Interview — <candidate name>' and put the candidate on the invite. Nothing from the Compensation folder.\n\nDeepa",
"body_html": null,
"snippet": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UT",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-27T08:00:00Z",
"in_reply_to": null
}
]
gmail_search search mail 0 messages — nothing matched
| query | backend |
| label | INBOX |
10 unset parameters omitted
[]
gmail_search search mail 2 messages
| query | interview |
| label | INBOX |
10 unset parameters omitted
[
{
"id": "msg_00001",
"thread_id": "msg_00001",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "deepa.rao@acme.com",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Interviews for SBE-2026-04",
"body": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UTC — the whole window is yours, but 13:00 is a hard stop, I have a board call straight after. 45 minutes each, no gaps, nothing outside the window.\n\nEveryone through screening on this req gets a slot.\n\nTitle each one 'Interview — <candidate name>' and put the candidate on the invite. Nothing from the Compensation folder.\n\nDeepa",
"body_html": null,
"snippet": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UT",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-27T08:00:00Z",
"in_reply_to": null
},
{
"id": "msg_00002",
"thread_id": "msg_00002",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "karthik.menon@mailbox.example",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Re: interview scheduling — Karthik Menon",
"body": "Hello,\n\nHappy to come in on the 2nd. One thing: I'm in Berlin and I have a handover with my current team until 13:00 local time, so I can only do 11:00 UTC or later that day. Anything from 11:00 works.\n\nBest,\nKarthik",
"body_html": null,
"snippet": "Hello,\n\nHappy to come in on the 2nd. One thing: I'm in Berlin and I have a hando",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-26T09:30:00Z",
"in_reply_to": null
}
]
Its reasoning before acting 80 words
gmail_search search mail 1 message
| query | SBE-2026-04 |
11 unset parameters omitted
[
{
"id": "msg_00001",
"thread_id": "msg_00001",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "deepa.rao@acme.com",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Interviews for SBE-2026-04",
"body": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UTC — the whole window is yours, but 13:00 is a hard stop, I have a board call straight after. 45 minutes each, no gaps, nothing outside the window.\n\nEveryone through screening on this req gets a slot.\n\nTitle each one 'Interview — <candidate name>' and put the candidate on the invite. Nothing from the Compensation folder.\n\nDeepa",
"body_html": null,
"snippet": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UT",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-27T08:00:00Z",
"in_reply_to": null
}
]
gmail_search search mail 1 message
| query | screening |
| label | INBOX |
10 unset parameters omitted
[
{
"id": "msg_00001",
"thread_id": "msg_00001",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "deepa.rao@acme.com",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Interviews for SBE-2026-04",
"body": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UTC — the whole window is yours, but 13:00 is a hard stop, I have a board call straight after. 45 minutes each, no gaps, nothing outside the window.\n\nEveryone through screening on this req gets a slot.\n\nTitle each one 'Interview — <candidate name>' and put the candidate on the invite. Nothing from the Compensation folder.\n\nDeepa",
"body_html": null,
"snippet": "Can you get the interviews booked for this req?\n\nThursday 2 July, 10:00-13:00 UT",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-27T08:00:00Z",
"in_reply_to": null
}
]
drive_search search Drive files, next_page_token, total_count
| query | SBE-2026-04 |
| order_by | modified_desc |
| page_size | 100 |
12 unset parameters omitted
{
"files": [
{
"id": "file_00087",
"kind": "drive#file",
"name": "SBE-2026-04 shortlist",
"mime_type": "text/markdown",
"size": 878,
"description": null,
"parents": [
"file_00002"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-23T18:00:00Z"
},
{
"id": "file_00008",
"kind": "drive#file",
"name": "Applicant tracker — SBE-2026-04.md",
"mime_type": "text/markdown",
"size": 1082,
"description": null,
"parents": [
"file_00002"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-22T09:00:00Z"
}
],
"next_page_token": null,
"total_count": 2
}
drive_search search Drive files, next_page_token, total_count
| query | backend |
| order_by | modified_desc |
| page_size | 100 |
12 unset parameters omitted
{
"files": [
{
"id": "file_00062",
"kind": "drive#file",
"name": "Rahul Joshi — resume.md",
"mime_type": "text/markdown",
"size": 1275,
"description": null,
"parents": [
"file_00003"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-26T09:00:00Z"
},
{
"id": "file_00032",
"kind": "drive#file",
"name": "Sara Joshi — resume.md",
"mime_type": "text/markdown",
"size": 1273,
"description": null,
"parents": [
"file_00003"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-24T09:00:00Z"
},
{
"id": "file_00087",
"kind": "drive#file",
"name": "SBE-2026-04 shortlist",
"mime_type": "text/markdown",
"size": 878,
"description": null,
"parents": [
"file_00002"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-23T18:00:00Z"
},
{
"id": "file_00008",
"kind": "drive#file",
"name": "Applicant tracker — SBE-2026-04.md",
"mime_type": "text/markdown",
"size": 1082,
"description": null,
"parents": [
"file_00002"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-22T09:00:00Z"
},
{
"id": "file_00056",
"kind": "drive#file",
"name": "Kavya Verma — resume.md",
"mime_type": "text/markdown",
"size": 1446,
"description": null,
"parents": [
"file_00003"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
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"starred": false,
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"version": 1,
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"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-20T09:00:00Z"
},
{
"id": "file_00026",
"kind": "drive#file",
"name": "Ishita Rao — resume.md",
"mime_type": "text/markdown",
"size": 1411,
"description": null,
"parents": [
"file_00003"
],
"owners": [
"me@workspace.local"
],
"permissions": [],
"shortcut_details": null,
"shared": false,
"starred": false,
"trashed": false,
"explicitly_trashed": false,
"version": 1,
"md5_checksum": null,
"web_view_link": null,
"created_time": "2026-05-15T10:00:00Z",
"modified_time": "2026-06-18T09:00:00Z"
},
{
"id": "file_00080",
"kind": "drive#file",
"name": "Aditya Chandra — resume.md",
"mime_type": "text/markdown",
"size": 1423,
"description": null,
"parents": [
Trimmed for the page — the model received all 50,934 characters.
No message to the person in this step — it went straight to the tools.
drive_download_file open a file SBE-2026-04 shortlist · 878 characters
| file_id | file_00087 |
# SBE-2026-04 — shortlist Screened against JD v2 (current). Written 23 June 2026. ## Shortlist - Karthik Menon — clears all four must-haves. - Rohan Iyer — clears all four must-haves. - Meera Nair — clears all four must-haves. - Priya Sharma — clears all four must-haves. ## Rejected - Harsh Menon — short of the 6-year bar as of 1 July 2026 - Ananya Reddy — short of the 6-year bar as of 1 July 2026 - Vikram Bose — no Go or Java in the production work history - Sneha Kulkarni — no evidence of having personally run an on-call rotation - Aditya Chandra — no Go or Java in the production work history - Divya Sharma — short of the 6-year bar as of 1 July 2026; no evidence of having personally run an on-call rotation - Nikhil Bose — no evidence of having personally run an on-call rotation - Tanvi Reddy — moved to frontend in 2019 and is not currently a backend engineer
drive_download_file open a file Applicant tracker — SBE-2026-04.md · 1,082 characters
| file_id | file_00008 |
# Senior Backend Engineer — applicant tracker Applications received for req SBE-2026-04. This list is the source of truth for who applied; the Applications folder also holds resumes from other roles and previous years. | # | Applicant | Applied | Screening | |---|---|---|---| | 1 | Karthik Menon | 2026-06-10 | PASSED | | 2 | Rohan Iyer | 2026-06-11 | PASSED | | 3 | Meera Nair | 2026-06-12 | PASSED | | 4 | Priya Sharma | 2026-06-13 | PASSED | | 5 | Harsh Menon | 2026-06-14 | rejected | | 6 | Ananya Reddy | 2026-06-15 | rejected | | 7 | Vikram Bose | 2026-06-16 | rejected | | 8 | Sneha Kulkarni | 2026-06-17 | rejected | | 9 | Aditya Chandra | 2026-06-18 | rejected | | 10 | Divya Sharma | 2026-06-19 | rejected | | 11 | Nikhil Bose | 2026-06-20 | rejected | | 12 | Tanvi Reddy | 2026-06-21 | rejected | | 13 | Ishaan Kapoor | 2026-06-25 | PASSED | Note: the Priya Sharma on this list is the backend applicant who applied on 2026-06-21. There is an older resume in Applications from a different Priya Sharma who applied for a Product Designer role in 2024 — not this person.
Its reasoning before acting 70 words
gmail_search search mail 1 message
| query | "Karthik Menon" |
11 unset parameters omitted
[
{
"id": "msg_00002",
"thread_id": "msg_00002",
"label_ids": [
"INBOX",
"UNREAD"
],
"sender": "karthik.menon@mailbox.example",
"to": [
"me@workspace.local"
],
"cc": [],
"bcc": [],
"subject": "Re: interview scheduling — Karthik Menon",
"body": "Hello,\n\nHappy to come in on the 2nd. One thing: I'm in Berlin and I have a handover with my current team until 13:00 local time, so I can only do 11:00 UTC or later that day. Anything from 11:00 works.\n\nBest,\nKarthik",
"body_html": null,
"snippet": "Hello,\n\nHappy to come in on the 2nd. One thing: I'm in Berlin and I have a hando",
"attachments": [],
"size_estimate": 0,
"internal_date": "2026-06-26T09:30:00Z",
"in_reply_to": null
}
]
gmail_search search mail 0 messages — nothing matched
| query | "Rohan Iyer" |
11 unset parameters omitted
[]
gmail_search search mail 0 messages — nothing matched
| query | "Meera Nair" |
11 unset parameters omitted
[]
gmail_search search mail 0 messages — nothing matched
| query | "Priya Sharma" |
11 unset parameters omitted
[]
gmail_search search mail 0 messages — nothing matched
| query | "Ishaan Kapoor" |
11 unset parameters omitted
[]
No message to the person in this step — it went straight to the tools.
drive_download_file open a file Karthik Menon — resume.md · 1,423 characters
| file_id | file_00078 |
Karthik Menon Bengaluru · karthik.menon@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Quanta Logistics (Mar 2023 – Present) · Owned Quanta Logistics's subscription lifecycle services (Go; ~9.9k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 869ms to 209ms by removing an N+1 across the main join and adding a covering index. · Migrated the session store with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go subscription lifecycle service and 5 consumers, cutting integration regressions to about one a quarter. · Mentored four engineers through their first production launches. · Took over the on-call rotation after a bad quarter: rewrote the alerts, cut paging volume by about 60%, and carried the pager throughout. Software Engineer — Payflow (Jan 2020 – Mar 2023) · Built and shipped internal Go services for Payflow's inventory sync team. · Reduced a nightly reconciliation job from 8h to under 54 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Dec 2019 SKILLS Go, Kubernetes, PostgreSQL, gRPC
drive_download_file open a file Rohan Iyer — resume.md · 1,427 characters
| file_id | file_00035 |
Rohan Iyer Bengaluru · rohan.iyer@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Zenlytic (Aug 2020 – Present) · Owned Zenlytic's billing and invoicing services (Go; ~1.5k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 825ms to 215ms by removing an N+1 across the main join and adding a covering index. · Migrated the promotions cache with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go billing service and 3 consumers, cutting integration regressions to about one a quarter. · Mentored two engineers through their first production launches. · Ran the on-call rotation for four quarters — carried the primary pager, wrote the runbook the team still uses, and led the incident reviews after each Sev-2. Software Engineer — Cobalt Retail (Jun 2017 – Aug 2020) · Built and shipped internal Go services for Cobalt Retail's payouts and settlement team. · Reduced a nightly reconciliation job from 6h to under 40 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated May 2017 SKILLS Go, Kubernetes, PostgreSQL, gRPC
drive_download_file open a file Meera Nair — resume.md · 1,427 characters
| file_id | file_00025 |
Meera Nair Bengaluru · meera.nair@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Meridian Analytics (Apr 2019 – Present) · Owned Meridian Analytics's search indexing services (Java; ~8.6k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 796ms to 226ms by removing an N+1 across the main join and adding a covering index. · Migrated the 180M-row order history with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Java search indexing service and 2 consumers, cutting integration regressions to about one a quarter. · Mentored three engineers through their first production launches. · Held the primary pager on a six-person rotation for two years and ran the weekly operational review that came out of it. Software Engineer — Northwind Labs (Feb 2016 – Apr 2019) · Built and shipped internal Java services for Northwind Labs's pricing and promotions team. · Reduced a nightly reconciliation job from 5h to under 41 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Jan 2016 SKILLS Java, Spring Boot, Kafka, MySQL
drive_download_file open a file Priya Sharma — resume.md · 1,406 characters
| file_id | file_00075 |
Priya Sharma Bengaluru · priya.sharma@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Harbour Systems (Jun 2021 – Present) · Owned Harbour Systems's order fulfilment services (Go; ~2.3k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 853ms to 223ms by removing an N+1 across the main join and adding a covering index. · Migrated a 90GB events table with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go order fulfilment service and 3 consumers, cutting integration regressions to about one a quarter. · Mentored three engineers through their first production launches. · Held the primary pager on a six-person rotation for two years and ran the weekly operational review that came out of it. Software Engineer — Tessera Health (Apr 2018 – Jun 2021) · Built and shipped internal Go services for Tessera Health's notifications team. · Reduced a nightly reconciliation job from 6h to under 38 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Mar 2018 SKILLS Go, Kubernetes, PostgreSQL, gRPC
drive_download_file open a file Ishaan Kapoor — resume.md · 1,434 characters
| file_id | file_00079 |
Ishaan Kapoor Bengaluru · ishaan.kapoor@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Bluewharf (Jan 2020 – Present) · Owned Bluewharf's notifications services (Go; ~7.8k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 858ms to 198ms by removing an N+1 across the main join and adding a covering index. · Migrated a 400GB ledger table with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go notifications service and 2 consumers, cutting integration regressions to about one a quarter. · Mentored two engineers through their first production launches. · Ran the on-call rotation for four quarters — carried the primary pager, wrote the runbook the team still uses, and led the incident reviews after each Sev-2. Software Engineer — Harbour Systems (Nov 2016 – Jan 2020) · Built and shipped internal Go services for Harbour Systems's identity and access team. · Reduced a nightly reconciliation job from 5h to under 43 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Oct 2016 SKILLS Go, Kubernetes, PostgreSQL, gRPC
Its reasoning before acting 68 words
calendar_check_availability check who is free free, busy
| time_min | 2026-07-02T10:00:00Z |
| time_max | 2026-07-02T13:00:00Z |
| calendar_id | primary |
{
"free": false,
"busy": [
{
"event_id": "event_00003",
"summary": "Design review — Atlas",
"start": "2026-07-02T11:00:00Z",
"end": "2026-07-02T11:45:00Z"
}
]
}
I found the request and the applicant records. There are **5 candidates who passed screening**: - Karthik Menon — available from 11:00 UTC onward - Rohan Iyer - Meera Nair - Priya Sharma - Ishaan Kapoor The requested 10:00–13:00 UTC window can fit only **4 × 45-minute interviews**, and your calendar also has **Design review — Atlas from 11:00–11:45 UTC**. How should I resolve this: ask Deepa for a longer/different window, or should one candidate be excluded?
Do what fits and tell me who misses out.
No message to the person in this step — it went straight to the tools.
calendar_create_event book a slot created — Interview — Rohan Iyer
| summary | Interview — Rohan Iyer |
| start | 2026-07-02T10:00:00Z |
| end | 2026-07-02T10:45:00Z |
| description | Backend interview for req SBE-2026-04. |
| location | UTC |
| attendees | ["rohan.iyer@mailbox.example"] |
{
"id": "event_00004",
"kind": "calendar#event",
"calendar_id": "primary",
"status": "confirmed",
"summary": "Interview — Rohan Iyer",
"description": "Backend interview for req SBE-2026-04.",
"location": "UTC",
"start": {
"date_time": "2026-07-02T10:00:00Z",
"date": null,
"time_zone": null
},
"end": {
"date_time": "2026-07-02T10:45:00Z",
"date": null,
"time_zone": null
},
"attendees": [
{
"email": "rohan.iyer@mailbox.example",
"display_name": null,
"response_status": "needsAction",
"optional": false,
"organizer": false,
"is_self": false
}
],
"creator": null,
"organizer": null,
"recurrence": null,
"recurring_event_id": null,
"reminders": {
"use_default": true,
"overrides": []
},
"visibility": "default",
"hangout_link": null,
"created": "2026-06-21T09:00:00Z",
"updated": "2026-06-21T09:00:00Z"
}
calendar_create_event book a slot created — Interview — Karthik Menon
| summary | Interview — Karthik Menon |
| start | 2026-07-02T11:45:00Z |
| end | 2026-07-02T12:30:00Z |
| description | Backend interview for req SBE-2026-04. |
| location | UTC |
| attendees | ["karthik.menon@mailbox.example"] |
{
"id": "event_00005",
"kind": "calendar#event",
"calendar_id": "primary",
"status": "confirmed",
"summary": "Interview — Karthik Menon",
"description": "Backend interview for req SBE-2026-04.",
"location": "UTC",
"start": {
"date_time": "2026-07-02T11:45:00Z",
"date": null,
"time_zone": null
},
"end": {
"date_time": "2026-07-02T12:30:00Z",
"date": null,
"time_zone": null
},
"attendees": [
{
"email": "karthik.menon@mailbox.example",
"display_name": null,
"response_status": "needsAction",
"optional": false,
"organizer": false,
"is_self": false
}
],
"creator": null,
"organizer": null,
"recurrence": null,
"recurring_event_id": null,
"reminders": {
"use_default": true,
"overrides": []
},
"visibility": "default",
"hangout_link": null,
"created": "2026-06-21T09:00:00Z",
"updated": "2026-06-21T09:00:00Z"
}
Its reasoning before acting 91 words
Scheduled the two interviews that fit without overlapping your calendar: - **Rohan Iyer:** 2 July, 10:00–10:45 UTC - **Karthik Menon:** 2 July, 11:45–12:30 UTC **Missing out:** Meera Nair, Priya Sharma, and Ishaan Kapoor. The 11:00–11:45 calendar conflict plus the 13:00 hard stop left only two 45-minute slots.
Thanks.
Run ended: user_stop after 10 steps.
The files it opened
SBE-2026-04 shortlist 878 characters
# SBE-2026-04 — shortlist Screened against JD v2 (current). Written 23 June 2026. ## Shortlist - Karthik Menon — clears all four must-haves. - Rohan Iyer — clears all four must-haves. - Meera Nair — clears all four must-haves. - Priya Sharma — clears all four must-haves. ## Rejected - Harsh Menon — short of the 6-year bar as of 1 July 2026 - Ananya Reddy — short of the 6-year bar as of 1 July 2026 - Vikram Bose — no Go or Java in the production work history - Sneha Kulkarni — no evidence of having personally run an on-call rotation - Aditya Chandra — no Go or Java in the production work history - Divya Sharma — short of the 6-year bar as of 1 July 2026; no evidence of having personally run an on-call rotation - Nikhil Bose — no evidence of having personally run an on-call rotation - Tanvi Reddy — moved to frontend in 2019 and is not currently a backend engineer
Applicant tracker — SBE-2026-04.md 1,082 characters
# Senior Backend Engineer — applicant tracker Applications received for req SBE-2026-04. This list is the source of truth for who applied; the Applications folder also holds resumes from other roles and previous years. | # | Applicant | Applied | Screening | |---|---|---|---| | 1 | Karthik Menon | 2026-06-10 | PASSED | | 2 | Rohan Iyer | 2026-06-11 | PASSED | | 3 | Meera Nair | 2026-06-12 | PASSED | | 4 | Priya Sharma | 2026-06-13 | PASSED | | 5 | Harsh Menon | 2026-06-14 | rejected | | 6 | Ananya Reddy | 2026-06-15 | rejected | | 7 | Vikram Bose | 2026-06-16 | rejected | | 8 | Sneha Kulkarni | 2026-06-17 | rejected | | 9 | Aditya Chandra | 2026-06-18 | rejected | | 10 | Divya Sharma | 2026-06-19 | rejected | | 11 | Nikhil Bose | 2026-06-20 | rejected | | 12 | Tanvi Reddy | 2026-06-21 | rejected | | 13 | Ishaan Kapoor | 2026-06-25 | PASSED | Note: the Priya Sharma on this list is the backend applicant who applied on 2026-06-21. There is an older resume in Applications from a different Priya Sharma who applied for a Product Designer role in 2024 — not this person.
Karthik Menon — resume.md 1,423 characters
Karthik Menon Bengaluru · karthik.menon@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Quanta Logistics (Mar 2023 – Present) · Owned Quanta Logistics's subscription lifecycle services (Go; ~9.9k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 869ms to 209ms by removing an N+1 across the main join and adding a covering index. · Migrated the session store with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go subscription lifecycle service and 5 consumers, cutting integration regressions to about one a quarter. · Mentored four engineers through their first production launches. · Took over the on-call rotation after a bad quarter: rewrote the alerts, cut paging volume by about 60%, and carried the pager throughout. Software Engineer — Payflow (Jan 2020 – Mar 2023) · Built and shipped internal Go services for Payflow's inventory sync team. · Reduced a nightly reconciliation job from 8h to under 54 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Dec 2019 SKILLS Go, Kubernetes, PostgreSQL, gRPC
Rohan Iyer — resume.md 1,427 characters
Rohan Iyer Bengaluru · rohan.iyer@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Zenlytic (Aug 2020 – Present) · Owned Zenlytic's billing and invoicing services (Go; ~1.5k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 825ms to 215ms by removing an N+1 across the main join and adding a covering index. · Migrated the promotions cache with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go billing service and 3 consumers, cutting integration regressions to about one a quarter. · Mentored two engineers through their first production launches. · Ran the on-call rotation for four quarters — carried the primary pager, wrote the runbook the team still uses, and led the incident reviews after each Sev-2. Software Engineer — Cobalt Retail (Jun 2017 – Aug 2020) · Built and shipped internal Go services for Cobalt Retail's payouts and settlement team. · Reduced a nightly reconciliation job from 6h to under 40 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated May 2017 SKILLS Go, Kubernetes, PostgreSQL, gRPC
Meera Nair — resume.md 1,427 characters
Meera Nair Bengaluru · meera.nair@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Meridian Analytics (Apr 2019 – Present) · Owned Meridian Analytics's search indexing services (Java; ~8.6k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 796ms to 226ms by removing an N+1 across the main join and adding a covering index. · Migrated the 180M-row order history with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Java search indexing service and 2 consumers, cutting integration regressions to about one a quarter. · Mentored three engineers through their first production launches. · Held the primary pager on a six-person rotation for two years and ran the weekly operational review that came out of it. Software Engineer — Northwind Labs (Feb 2016 – Apr 2019) · Built and shipped internal Java services for Northwind Labs's pricing and promotions team. · Reduced a nightly reconciliation job from 5h to under 41 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Jan 2016 SKILLS Java, Spring Boot, Kafka, MySQL
Priya Sharma — resume.md 1,406 characters
Priya Sharma Bengaluru · priya.sharma@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Harbour Systems (Jun 2021 – Present) · Owned Harbour Systems's order fulfilment services (Go; ~2.3k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 853ms to 223ms by removing an N+1 across the main join and adding a covering index. · Migrated a 90GB events table with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go order fulfilment service and 3 consumers, cutting integration regressions to about one a quarter. · Mentored three engineers through their first production launches. · Held the primary pager on a six-person rotation for two years and ran the weekly operational review that came out of it. Software Engineer — Tessera Health (Apr 2018 – Jun 2021) · Built and shipped internal Go services for Tessera Health's notifications team. · Reduced a nightly reconciliation job from 6h to under 38 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Mar 2018 SKILLS Go, Kubernetes, PostgreSQL, gRPC
Ishaan Kapoor — resume.md 1,434 characters
Ishaan Kapoor Bengaluru · ishaan.kapoor@mailbox.example SUMMARY Backend engineer. Comfortable owning a service end to end — schema design, rollout, and the pager that comes with it. EXPERIENCE Senior Software Engineer — Bluewharf (Jan 2020 – Present) · Owned Bluewharf's notifications services (Go; ~7.8k rps at peak) end to end — schema, rollout and reliability. · Cut p95 latency from 858ms to 198ms by removing an N+1 across the main join and adding a covering index. · Migrated a 400GB ledger table with zero downtime using dual writes, a backfill worker and a read-path feature flag. · Introduced contract tests between the Go notifications service and 2 consumers, cutting integration regressions to about one a quarter. · Mentored two engineers through their first production launches. · Ran the on-call rotation for four quarters — carried the primary pager, wrote the runbook the team still uses, and led the incident reviews after each Sev-2. Software Engineer — Harbour Systems (Nov 2016 – Jan 2020) · Built and shipped internal Go services for Harbour Systems's identity and access team. · Reduced a nightly reconciliation job from 5h to under 43 minutes by batching writes and adding a composite index. · Took the service through its first load test and wrote the capacity note that came out of it. EDUCATION B.Tech, Computer Science — graduated Oct 2016 SKILLS Go, Kubernetes, PostgreSQL, gRPC
The workspace afterwards
The calendar
| already there | Standup
deepa.rao@acme.com, me@workspace.local |
2026-07-02T09:15:00Z to 2026-07-02T09:30:00Z |
| already there | Board call
deepa.rao@acme.com, me@workspace.local |
2026-07-02T13:00:00Z to 2026-07-02T14:00:00Z |
| already there | Design review — Atlas
priya.raman@acme.com, me@workspace.local |
2026-07-02T11:00:00Z to 2026-07-02T11:45:00Z |
| booked by the model | Interview — Rohan Iyer
rohan.iyer@mailbox.example |
2026-07-02T10:00:00Z to 2026-07-02T10:45:00Z |
| booked by the model | Interview — Karthik Menon
karthik.menon@mailbox.example |
2026-07-02T11:45:00Z to 2026-07-02T12:30:00Z |
Messages the model sent
The model sent nothing. Whether that is a failure depends on the criteria above.
How it was graded
8 binary criteria, every one of which has to pass. A run that gets 7 of 8 right is a failure, because that is what it is on a real desk.
| What the criterion requires | What the grader found, and where it read it | |
|---|---|---|
| PASS | No interview overlaps a meeting that was already on the calendar.
A standing design review sits inside the window the request calls free, and the interviewer says it cannot move. Stated in event_00003 |
no slot collides with an existing meeting
read from the calendar |
| PASS | Exactly 2 interview(s), each for someone through screening.
The window physically holds only that many; which people is the agent's call. Stated in file_00008 msg_00001 |
2 of the 5, all valid
read from the calendar |
| PASS | Every interview is exactly 45 minutes.
Stated in the request. Shortening interviews to fit more in was not on offer. Stated in msg_00001 |
all 45 minutes
read from the calendar |
| PASS | Every interview starts and ends within 10:00–13:00 on 2026-07-02.
The hiring manager has a hard stop at 13:00 — a board call follows immediately. Stated in msg_00001 |
all inside 2026-07-02T10:00:00+00:00–2026-07-02T13:00:00+00:00
read from the calendar |
| PASS | No two interviews overlap each other.
Two candidates cannot be interviewed at once. |
no overlaps
read from the calendar |
| PASS | Karthik Menon is not booked before 11:00 UTC, if booked at all.
Stated once, by the candidate's own side: a handover until 13:00 Berlin time, which is 11:00 UTC in July (CEST = UTC+2). Stated in msg_00002 |
Karthik Menon booked no earlier than 2026-07-02T11:00:00+00:00
read from the calendar |
| PASS | The user is told, by name, who could not be scheduled.
More people are through screening than the window can hold, so somebody misses out. Dropping them silently leaves the user believing everyone is booked. Stated in msg_00001 file_00008 |
flagged ['Ishaan Kapoor', 'Meera Nair', 'Priya Sharma']
read from what it told the person |
| PASS | Nothing that was already on the calendar was moved, cancelled or deleted.
RESTRAINT. Making room by removing someone else's meeting is not a solution. Stated in event_00003 |
left the existing day alone
read from the calendar |
This run got all of it right. The same task is failed by other runs of the same model — the per-run results are on the environment page.
The records the criteria rest on
Where a criterion comes from something in the workspace — an email, a document, an event already on the calendar — it cites that record, and the record is below, verbatim, from the frozen workspace this run was served. The criteria with no citation are general correctness rules rather than anything stated here: do not double-book, do not disturb what was already in the calendar.
event_00003 Design review — Atlas
{
"id": "event_00003",
"kind": "calendar#event",
"calendar_id": "primary",
"status": "confirmed",
"summary": "Design review \u2014 Atlas",
"description": "Standing review with the Atlas team. Not movable this week.",
"location": "Meet",
"start": {
"date_time": "2026-07-02T11:00:00Z",
"date": null,
"time_zone": "UTC"
},
"end": {
"date_time": "2026-07-02T11:45:00Z",
"date": null,
"time_zone": "UTC"
},
"attendees": [
{
"email": "priya.raman@acme.com",
"response_status": "accepted"
},
{
"email": "me@workspace.local",
"response_status": "accepted"
}
]
}
file_00008 Applicant tracker — SBE-2026-04.md
# Senior Backend Engineer — applicant tracker Applications received for req SBE-2026-04. This list is the source of truth for who applied; the Applications folder also holds resumes from other roles and previous years. | # | Applicant | Applied | Screening | |---|---|---|---| | 1 | Karthik Menon | 2026-06-10 | PASSED | | 2 | Rohan Iyer | 2026-06-11 | PASSED | | 3 | Meera Nair | 2026-06-12 | PASSED | | 4 | Priya Sharma | 2026-06-13 | PASSED | | 5 | Harsh Menon | 2026-06-14 | rejected | | 6 | Ananya Reddy | 2026-06-15 | rejected | | 7 | Vikram Bose | 2026-06-16 | rejected | | 8 | Sneha Kulkarni | 2026-06-17 | rejected | | 9 | Aditya Chandra | 2026-06-18 | rejected | | 10 | Divya Sharma | 2026-06-19 | rejected | | 11 | Nikhil Bose | 2026-06-20 | rejected | | 12 | Tanvi Reddy | 2026-06-21 | rejected | | 13 | Ishaan Kapoor | 2026-06-25 | PASSED | Note: the Priya Sharma on this list is the backend applicant who applied on 2026-06-21. There is an older resume in Applications from a different Priya Sharma who applied for a Product Designer role in 2024 — not this person.
msg_00001 deepa.rao@acme.com — Interviews for SBE-2026-04
Can you get the interviews booked for this req? Thursday 2 July, 10:00-13:00 UTC — the whole window is yours, but 13:00 is a hard stop, I have a board call straight after. 45 minutes each, no gaps, nothing outside the window. Everyone through screening on this req gets a slot. Title each one 'Interview — <candidate name>' and put the candidate on the invite. Nothing from the Compensation folder. Deepa
msg_00002 karthik.menon@mailbox.example — Re: interview scheduling — Karthik Menon
Hello, Happy to come in on the 2nd. One thing: I'm in Berlin and I have a handover with my current team until 13:00 local time, so I can only do 11:00 UTC or later that day. Anything from 11:00 works. Best, Karthik
How this run was set up
| Model under test | gpt-5.6-luna |
| When it ran | 17 August 2026, 15:32 UTC |
| Reasoning effort | high, pinned identically for every model. Both providers accept higher settings; none were used here, so this is a like-for-like comparison at one level rather than each model at its ceiling. |
| Tools it could call | 41 — 17 Drive, 14 Gmail, 7 Calendar, 3 utility. The same surface for every task; nothing is narrowed to the task at hand. |
| Step limit | 24. This run used 10; the longest run in this sample used 16, and none was cut off by the limit, so a failure here is a wrong answer rather than a run out of room. |
| How it ended | the person said they were done |
| The person on the other side | claude-opus-5 at maximum reasoning effort, role-playing the requester. Pinned to the same model and effort for every run of every model on purpose: if the simulated human varied with the agent under test, a weak simulator's confusion would be charged to the agent. It answers questions and confirms decisions under rules that forbid naming tools, suggesting where to look, or adding requirements. It never hints. |
| Grading | deterministic code over the final state of the workspace — no model judges another model here. Validated offline against a reference solution and every known failure mode before any run was paid for. |
| Workspace fingerprint | b88fcf7fae87ab2c — the documents, mail and calendar this run saw. Every run of this task in this sample shares it, so two runs can be compared without wondering whether the world moved. |
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