Client Library Engineer: Python + JavaScript

Supabase is an Open Source and fully remote company building developer tools for databases. We are looking for a Client Library Engineer with strong expertise in both Python and JavaScript to help build and maintain high-quality client libraries. You will be responsible for ensuring our libraries are battle-tested, robust, and work seamlessly across all available platforms, including web, server, and mobile environments. As part of our engineering team, you’ll play a key role in shaping developer experiences, optimizing SDK performance, and ensuring consistency across multiple ecosystems. If you love building developer-friendly tools and enjoy solving cross-platform challenges, we’d love to hear from you! You will:

• Develop and maintain Supabase’s Python and JavaScript client libraries, ensuring they are production-ready and reliable. This includes:
• JavaScript libraries: supabase-js, auth-js, storage-js, realtime-js, functions-js, postgrest-js
• Python libraries: supabase-py, auth-py, storage-py, realtime-py, functions-py, postgrest-py
• Ensure the libraries are fully battle-tested, with comprehensive test coverage, benchmarking, and stress testing.
• Guarantee that the libraries work consistently across different platforms (Node.js, browsers, mobile, and backend environments).
• Maintain high test coverage across all libraries to ensure reliability, prevent regressions, and facilitate safe refactoring.
• Optimize library performance and usability for developers.
• Collaborate with internal teams to align library APIs with best practices and idiomatic usage in both ecosystems.
• Write clear, high-quality documentation and guides to help developers integrate the libraries easily.
• Work closely with open-source communities, gather feedback, and iterate on improvements.
• Stay up to date with the latest advancements in the Python and JavaScript ecosystems to ensure compatibility and best practices.

You have:

• Strong experience in both Python and JavaScript/TypeScript.
• Deep understanding of the Python and JavaScript ecosystem, including packaging, dependency management, and best practices for libraries.
• Experience with the JavaScript/TypeScript ecosystem, including npm, ES modules, bundlers, and browser compatibility concerns.
• Experience writing cross-platform libraries that work in different environments.
• Strong focus on writing tests with frameworks like Pytest, Jest, or similar, ensuring high test coverage.
• Familiarity with networking concepts (e.g., HTTP, WebSockets, authentication mechanisms).
• Experience working with open-source projects or maintaining developer tools.
• Experience working with WebAssembly (Wasm) for cross-platform compatibility.
• Familiarity with mobile runtimes like React Native, Deno, or serverless environments.
• Strong communication skills and a passion for building developer-friendly libraries.

We offer

• 100% remote work from anywhere in the world. No location-based adjustment to your salary.
• Autonomous work. We work collaboratively on projects, but you set your own pace.
• Health, Vision and Dental benefits. Supabase covers 100% of the cost for employees and 80% for dependants
• Generous Tech Allowance for any office setup you need
• Annual Education Allowance
• Annually run off-sites.

About the team

• We're a startup. It's unstructured.
• Collectively founded more than 30 startups.
• Globally distributed team with more than 30 different nationalities.
• We deeply believe in the efficacy of collaborative open source. We support existing communities and tools, rather than building "yet another xx".
• We "dogfood" everything. If you use it in your project, we use it in Supabase.

Process

• The entire process is fully remote and all communication will happen over email or via video chat.
• Once you've submitted your application, the team will review your submission and may reach out for a short screening interview over a video call.
• If you pass the screen you will be invited to up to four follow-up interviews.
• The calls:
• usually take between 20-45 minutes each depending on the interviewer.
• most of the time, are all 1:1.
• will be with the founders, a member of either the growth or engineering team (depending on the role) and usually one other person from your immediate team or function.
• Once the interviews are over, the team will meet to discuss several roles and candidates and may:
• ask one or two follow-up questions over email or a quick call.
• go directly to making an offer.

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