About the role

What we’re building\
Respan is building the self-driving observability and evals platform for AI teams, used by 60+ YC companies and hundreds of AI teams.

The role

You will work on everything from the backend tracing pipeline and eval framework to the React dashboard that thousands of AI teams use daily. We are a small team, so you will own features end-to-end. This role is for someone who is comfortable jumping between Python and TypeScript, cares about both system design and user experience, and wants to ship things that matter every week.

What you’ll do:

Build and ship product features across the full stack (React, Next.js, Python, PostgreSQL)
Design and implement APIs, data pipelines, and real-time systems
Collaborate directly with founders and customers to scope and prioritize work
Own features from design through deployment and iteration
Contribute to infrastructure decisions and system architecture

What you must have:

Strong experience with TypeScript, React, and Node.js or Python
Comfortable building and deploying production web applications
Ability to move fast and ship iteratively in an early-stage environment

Strong plus:

Experience with data-intensive applications or observability tools
Familiarity with PostgreSQL, ClickHouse, or similar databases
Background in developer tools or B2B SaaS
Good instincts for product and user experience

About the company

Respan (formerly Keywords AI) gives teams a unified control plane to trace and evaluate agent behavior without guesswork, automatically surface issues, and fix what breaks faster. Respan connects production observability, automated and human-in-the-loop evaluations, and an adaptive AI gateway to close the loop between detection, decision, and action - so agents improve continuously in production.

Respan is trusted by 100+ AI startups and enterprise teams. Today, the platform process 1B+ logs and 2T+ tokens every month, supporting more than 6.5M end users.