Happyrobot builds AI agents to automate phone calls in the logistics industry.

From simple check calls with truck drivers, to contract price negotiations between enterprises, our AI agents are able to provide and gather information more efficiently than other alternatives.

We believe that voice will become a much more prevalent interface for digital systems, and we're building the tools to make that possible.

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

As a Full Stack Engineer, you will own parts of the platform and infra, shipping daily to scale and optimize for rapid growth.

Tech Profile

• Strong generalist - great at Front-End.
• React & Typescript
• You will build entire sections of the product, including the web app.
• You will assist with the optimization of the voice AI infrastructure.

Must Have

• Good design / front-end style.
• Excellent communication skills and the ability to explain technical concepts clearly.
• Passion for AI-driven technologies
• Founder Mindset: Hard work + independence + Ownership

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.

JavaScript, TypeScript, Node.js, Kubernetes, Rust, Python, PyTorch, LLM training & finetuning.