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Relixir · 2 months ago

Founding Engineer (Full-stack)

San Francisco, CA

Full-time

Hybrid

Entry, Mid Level

$200K/yr - $250K/yr

1+ years exp

Relixir is a YC-backed startup focused on AI search automation, and they are seeking a Founding Full Stack Engineer to shape their product and technology. The role involves hands-on full-stack development, working closely with the founders to influence technical direction, and taking ownership of critical features from concept to production.

AdvertisingArtificial Intelligence (AI)MarketingSEO

Responsibilities

Architect and ship core product surfaces with Next.js + Typescript

Design and implement high quality user experiences for complex state / data patterns

Deliver fast and clear data visualizations for millions of data points from various sources

Building features in Python (FastAPI) with PostgreSQL as our primary database

Managing AWS infrastructure — primarily ECS/Fargate, Lambda, S3, and related services

Designing APIs for the frontend (TypeScript) and partner integrations

Working on AI (LLM-powered) features end-to-end

Work directly with the founders to influence technical and product direction, deciding how we scale our platform and what bets we make in AI search automation

Take ideas from rough concepts to production-ready systems – UI/UX, frontend components, APIs, LLM usage, and everything in between

Talk to customers, dig into their needs, and turn feedback into technical solutions that directly impact their growth