Full-Stack Engineer: Build End-to-End AI Platform + Equity

happyrobot.ai; San Francisco (CA); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Healthcare

Dental

Vision

Equity

Job summary

HappyRobot in San Francisco is seeking a Full Stack Engineer to own meaningful parts of the product and infrastructure end-to-end. We value builders who thrive in ambiguity, care about craft, and want real ownership over what you create.

You’ll contribute across the stack with Frontend (TypeScript/Next.js) and Backend (Go), delivering features from UI to APIs, while improving our voice AI systems for latency and cost. Join a world-class team backed by top investors.

Qualifications

• Strong generalist across frontend and backend.
• Frontend expertise with TypeScript and Next.js.
• Backend experience with Go for reliable, scalable systems.
• Product-minded with focus on speed, quality and scale.

Responsibilities

• Build and own major parts of the web application.
• Design, implement, and ship features end-to-end — from UI to APIs to infrastructure.
• Help optimize and scale our voice AI infrastructure, improving latency, reliability, and cost.
• Collaborate closely with founders and teammates to shape product direction.
• Ship to production frequently and iterate based on real user feedback.

Skills

TypeScript

Next.js

Go

Full-stack

Product mindset

Job description

HappyRobot in San Francisco is seeking a Full Stack Engineer to own meaningful parts of the product and infrastructure end-to-end. We value builders who thrive in ambiguity, care about craft, and want real ownership over what you create.

You’ll contribute across the stack with Frontend (TypeScript/Next.js) and Backend (Go), delivering features from UI to APIs, while improving our voice AI systems for latency and cost. Join a world-class team backed by top investors.