Senior Full-Stack Engineer - Remote

Overview

OpenRouter is the world’s largest marketplace of LLMs, growing rapidly to meet the evolving needs of developers, enterprises, and AI enthusiasts. As part of our small, highly technical team of 5, we are looking for a Senior Full-Stack Engineer who thrives on shipping user-facing features, building elegant front-end interfaces with React, and creating powerful backend API functionality.

In Short

• Build and maintain user-friendly, high-performance interfaces using React and Next.js.
• Design, implement, and deploy scalable API functionality using Cloudflare Workers.
• Take features from concept to production, ensuring performance and reliability.
• Write clean, maintainable, and well-documented TypeScript code.
• Identify bottlenecks and optimize performance across frontend and backend systems.

Requirements

• 4+ years of professional experience in full-stack development.
• Proficient in React, TypeScript, Next.js, and JS runtimes.
• Experience with Cloudflare Workers or other edge-first serverless platforms is a plus.
• Strong communication skills and a team-oriented attitude.
• Ability to self-manage and deliver high-quality results asynchronously.

Benefits

• Work at the forefront of AI and LLM infrastructure.
• Collaborate with a small, talented team of engineers.
• Opportunities for growth into leadership roles.
• Competitive compensation, equity, and benefits.