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Member of Technical Staff - Platform Eng

Composio · sf

Extracted from the posting

Base
Not stated
Remote
On-site
Funding
$25M Series A, Lightspeed
Stack
TypeScript, Go, AWS Lambda, Firecracker

Builds and evolves platform primitives and APIs covering auth, automatic token refreshes, triggers, tool search, tool planning, and sandbox orchestration. Manages multiple code execution runtimes across AWS Lambda and Firecracker, and works on performance tuning such as profiling, DB query optimization, and Temporal workflows. Optional skills include TypeScript and Go.

At Composio, we are building infrastructure that allows agents to communicate with the tools you use for work including Github, Gmail, Notion, Salesforce, etc. We are a small team of engineers wrangling problems from context to search, that help us provide the most capable bridge between your agents and your tools.


We raised a $25M Series A from Lightspeed with some incredible angels like Guillermo Rauch (CEO of Vercel), Dharmesh Shah (CTO of Hubspot), Gokul Rajaram. Beginning of this year we 3x our ARR, our customer range from your friends in the YC batch to Wabi, Glean, Zoom and many more.


What you'll do?

  • evolve our platform primitives and APIs — auth, automatic refreshes, triggers, tool search, tool planning, orchestrating and managing sandboxes
  • manage multiple runtimes for code execution across lambdas and firecracker
  • performance optimization — tracing, CPU/heap profiling, optimizing db queries, optimizing temporal workflows.
  • work closely with product engineering teams and customers to win their workloads, improving the product in the process
  • writing articulate docs


"Must haves"

if you are very good, nothing is a must per-se

  • core platform engineeringyou've worked extensively in scaling backend distributed systemsyou know how to maintain reliable systems while shipping fastyou are able to hold many different parts of the platform in mind at once
  • ai nativeyou have built with the language modelsyou have built for the language models
  • linux — you are comfortable in a linux enviornment
  • typist — you can write docs well and explain complex ideas clearly
  • human — you build trust and admit what you don’t know


Optional

  • multiple years of experience writing Typescript, Go
  • contributions to a major open source project
  • started companies or build large side projects

Technologies

TypeScriptGoAWS LambdaFirecrackerLinux
Composio
Composio
Website

Job details

TypeFull-time
Work ModeOn-site
LevelSenior
Location🇺🇸San Francisco, CA
PostedNov 05, 2026
Apply Now

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