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.