SDK Engineer - C#

About Supabase

Supabase is the Postgres development platform, built by developers for developers. We provide a complete backend solution including Database, Auth, Storage, Edge Functions, Realtime, and Vector Search. All services are deeply integrated and designed for growth.

About the Role

We're looking for a C# SDK Engineer to join our SDK team and help bring official, first-class Supabase support to the .NET and Unity ecosystems. You'll work closely with our existing SDK engineers, the broader product and engineering team, and the C# developer community, helping us design, build, and maintain an SDK that feels native to the stack.

This role is ideal for someone who thrives in async, fast-paced environments and is excited about building developer tools that scale to millions.

What You'll Own

• Design and build the C# SDK — own the Supabase C# SDK end-to-end, including Auth, Database, Storage, Functions and Realtime clients, ensuring every surface feels idiomatic to .NET developers

• Drive the developer experience — make deliberate API design decisions that are well-typed, consistent, and intuitive for developers coming from the .NET ecosystem

• Shape the roadmap — identify gaps, triage feedback, and propose improvements based on real developer needs and Supabase product direction

• Engage the community — participate in GitHub discussions, review contributions, and build relationships with .NET and Unity developers using Supabase

• Collaborate across the SDK team — contribute to shared patterns, tooling, and standards that raise the quality bar across all supported languages

• Write documentation and examples — produce guides, code samples, and reference docs that help developers get started quickly and go deep with confidence

What You Bring

• Have 5+ years of experience building production applications in C# and the .NET ecosystem

• Have prior experience building SDKs, libraries, or other developer-facing tools, with a strong sense of what makes an API intuitive and idiomatic

• Are comfortable working across multiple programming languages and ecosystems — you can read TypeScript, Python, or Go to draw patterns from the broader SDK team

• Communicate clearly across both technical and non-technical audiences

• Have experience in async or globally distributed teams

• Are energized by solving real-world problems for developers

• Are comfortable navigating ambiguity and moving quickly

What We Offer

• Fully Remote

  We hire globally. We believe you can do your best work from anywhere. There are no Supabase offices, but we provide a WeWork membership or co-working allowance you can use anywhere in the world.

• ESOP

  Every team member receives ESOP (equity ownership) in the company. We want everyone to share in the upside of what we’re building together.

• Tech Allowance

  Use this budget to set up your ideal work environment—laptop, monitor, headphones, or whatever helps you do your best work.

• Health Benefits

  Supabase covers 100% of health insurance for employees and 80% for dependents, wherever you are. Your wellbeing and your family’s health are important to us.

• Annual Off-Sites

  Once a year, the entire company gathers in a new city for a week of connection, collaboration, and fun. It’s a highlight of our year.

• Flexible Work

  We operate asynchronously and trust you to manage your own time. You know what needs to be done and when.

• Professional Deve