Product Engineer

Respan • AI Development Tools • AI Evaluation & Observability • JavaScript • TypeScript • 3 days ago

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Salary

≈ $104k – $201k per year (Estimated)

Location

Remote (United States, India)

Seniority

Middle · 3+ years exp

Employment

Full-Time

Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Aug 28, 2026.

Overview

Company

Impact

Profile match

Respan

Respan, which launched as Keywords AI, builds the observability and evaluation layer that engineers rely on to trace, debug and improve applications built on large language models. Its platform records every prompt, tool call and response, scores them against curated test sets and shows exactly where quality, latency or cost regressed between releases, so teams can ship model changes with the same discipline they apply to ordinary software. The product is used by startups running AI features in production at scale.

respan.ai • HQ: San Francisco, United States • AI Development Tools • AI Evaluation & Observability • 51-200 employees • Est. 2023

Tech stack of Respan

Backed by Y Combinator

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 be the person who talks to customers, understands their pain points, and then builds the features that solve them. This role is equal parts engineering and product thinking. We are looking for someone with strong frontend skills who also cares deeply about the why behind every feature. You will work closely with design, ship polished UI, and iterate based on real usage data.

What you’ll do:

Own user-facing features from ideation through launch
Talk to customers weekly to understand pain points and validate solutions
Build polished, performant UI with React and Next.js
Write clear specs and collaborate with the design team on UX
Instrument features with analytics and iterate based on usage data

What you must have:

Strong frontend skills with TypeScript, React, and modern CSS
Excellent product taste and attention to detail
Comfortable talking to customers and translating feedback into features

What is nice to have:

Experience building developer tools or B2B SaaS products
Familiarity with product analytics tools such as Mixpanel, Amplitude, or PostHog
Experience with user research or customer development processes
Background in design or strong visual sensibility

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