Open Source Jobs

Hiring early-career Full Stack Engineer to build and maintain Java (Spring Boot) microservices, work on distributed systems and APIs at scale, contribute to open-source repositories, and collaborate on system design and reliability improvements. Rol…

The AI-native, open-source, usage-based billing platform. Lago is trusted by CoreWeave, Synthesia, Groq, PayPal and Mistral AI to manage their billing. YC & FirstMark backed. Open roles include: Account Executive (Remote USA); Product Engineer (Grow…

Fully remote, fully async, fully open-source. A CRE is a point of contact available, both internally and externally, to advise on best practice. Normally, they are knowledgeable in a specific area (i.e. Realtime, Postgres) but they aim to be general…

Zed is a company for developers, by developers. The founders actively write software and the company has raised $42M to build a new way to collaborate on code, keeping conversations connected to the code itself. They created a high-quality editor an…

xAI's London team is hiring two onsite full-time roles. Backend Engineer: build and scale high-performance production systems powering grok.com and the xAI API; strong Rust (or C++) required; distributed systems experience a plus. Developer Experien…