resolved · serverless
Hours → minutes
Incident mitigation time, after Khoj — Google-wide automated root-causing I built with 4 interns.
tanmaysahay.com
All systems operational · on call since 2019
Tanmay Sahay
तन्मयSite reliability engineer at Google. LLM serving for Gemini and Vertex AI, networks, serverless — kept up, and the pager kept quiet.
Components
uptime history · 2017 → now
LLM serving · Gemini & Vertex AI
Network infrastructure
Cloud infrastructure · monitoring & alerting
Serverless platform
Image services
incident path
- page
- LLM-assisted triage
- gated actuation
- resolved
Past incidents
resolved, with receipts
resolved · serverless
−50% oncall
An actionable-metrics framework, while the team onboarded 40% more partner services.
resolved · serverless
560+ databases
Progressive rollouts of Spanner schema and config changes; bad changes no longer hit customers globally.
resolved · LLM serving
Hermetic ML-Ops
Vertex AI model-serving configs migrated, removing a class of release-time serving outages.
chaos test · network
Break it on purpose
A system for Netflix-style chaos-monkey testing of Google's network infrastructure.
shipped · monitoring
1 week, not months
The Alert2Bug migration, on existing primitives instead of a bespoke rebuild.
Off the clock
agent harnesses & evaluation infrastructure
A multi-agent fleet harness on a generator ≠ evaluator rail: an independent evaluator judges a change by running it, and mutation testing is the primary defect-finder.
A human-in-the-loop trading engine: 15,001 tests at 82% coverage, 58 MCP tools, every capital-moving path behind an approval gate.
In their words
43 recognitions from 37 colleagues · 2019–2025
“Thank you for going above and beyond the call of duty in your response to the log4j security vulnerabilities in December 2021. Your commitment to securing Google and our customers is truly appreciated!”
— colleague, Serverless, 2022
Before all this
IIIT Hyderabad
B.Tech, Computer Science · 2013–2017
AIR 719
AIEEE 2013 · top 0.05% of 1.4M
9th of 3000+
ICPC 2016, Kharagpur online
Top 20
CodeChef Long Challenge