Software Engineer - Full Stack

About the role

About HappyRobot

HappyRobot is the AI-native operating system for the real economy—a system that closes the circuit between intelligence and action. By combining real-time truth, specialized AI workers, and an orchestrating intelligence, we help enterprises run complex, mission-critical operations with true autonomy.

Our AI OS compounds knowledge, optimizes at every level, and evolves over time. We’re starting with supply chain and industrial-scale operations, where resilience, speed, and continuous improvement matter most—freeing humans to focus on strategy, creativity, and other high-value tasks.

You can learn more about our vision in our Manifesto. HappyRobot has raised $62M to date, including our most recent $44M Series B in September 2025. Our investors include Y Combinator (YC), Andreessen Horowitz (a16z), and Base10—partners who believe in our mission to redefine how enterprises operate. We’re channeling this investment into building a world-class team: people with relentless drive, sharp problem-solving skills, and the passion to push limits in a fast-paced, high-intensity environment. If this resonates, you belong at HappyRobot.

About The Role

At HappyRobot, Full Stack Engineers own meaningful parts of the product and infrastructure end-to-end.

We’re looking for builders who thrive in ambiguity, care deeply about craft, and want real ownership over what they create.

What We’re Looking For

- Strong generalist — you’re excellent on either the front end or back end, and comfortable working across the stack

- Front-end expertise with TypeScript and Next.js, including performance, UX, and clean architecture

- Back-end experience with Go, building reliable, scalable systems

- Product-minded engineer who understands tradeoffs between speed, quality, and scale.

What You’ll Do

- Build and own entire sections of the product, including 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

Why join us?

- Opportunity to work at a high-growth AI startup, backed by top investors.

- Rapidly growing and backed by top investors including a16z, Y Combinator, and Base10.

- Ownership & Autonomy - Take full ownership of projects and ship fast.

- Top-Tier Compensation - Competitive salary + equity in a high-growth startup.

- Comprehensive Benefits - Healthcare, dental, vision coverage.

- Work With the Best - Join a world-class team of engineers and builders.

Our Operating Principles

Extreme Ownership