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Role description

Member of Technical Staff - Research Engineer

Composio logoComposio
AI-native
TypeFull-time
WorkplaceOn-site
SeniorityStaff / Lead
LocationSan Francisco, CA
Posted2/10/2026
Research

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?

  • build large evals with real tool calling data, measuring where models suck in long horizon tool execution

  • work on search problems for finding semantically similar tools and cached tool execution paths and plans.

  • train large agentic harness systems to improve session accuracy with millions of real tool calls as baseline data

  • SFT on our agentic traces and RL models on top of our agentic harness and app sandboxes.

"Must haves"

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

  • research

    • you can independently execute against the research goals

    • you can prototype and test experiments very quickly

    • you can work with product and engineering teams to take research ideas to production in a matter of days

  • typist — you can write docs well and explain complex ideas clearly

  • human — you build trust and admit what you don’t know

Relevant archetypes

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Company info

Composio logo

Composio

Building skills layer for AI Agents

At Composio, We're building the future of Agentic Actions. We are empowering AI Agents to interact with hundreds of applications/tools and take autonomous actions, streamlining workflows and unlocking new possibilities. We're always on a lookout for great talent and check out our careers page!

Private companySeries A
Founded2023
HQSan Francisco, United States
Size51-200 employees
Unlock human wisdom
ThesisTermsPrivacy
Industry
Software Development
Funding
  • Series A · $25M · Jul 22, 2025
  • Series A · Apr 9, 2025
Investors
Lightspeed Venture Partners
Tech stackapollo-io, resonate, intercom, repro, tailwind, vanta, snowflake, zendesk, workspace, curl

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