Open Source Engineer (c15t)

About This Role

c15t is the fastest, most developer-friendly consent framework on the web. As our first full-time open-source engineer, you’ll take full responsibility for the SDK internals, developer experience and community engagement. You’ll write high-quality TypeScript, optimise for performance and collaborate directly with developers using the tool. If you care about DX, privacy and open-source, and want to build a real standard, this is your moment.

Key Responsibilities

• Lead development of the c15t SDK core and framework integrations

• Design APIs that are intuitive and flexible for developers

• Optimise performance and maintain best-in-class benchmarks

• Maintain documentation, CLI tools and example repositories

• Work closely with the open-source community for feedback and improvement

• Ensure strong test coverage and code quality across the SDK

• Implementation of Shadcn UI components and Tailwind CSS

Required Qualifications

• 4+ years of TypeScript or JavaScript experience

• Experience building SDKs, libraries or developer tools

• Strong understanding of React or other modern frameworks

• Comfort working with bundlers, testing tools and versioning systems

• Experience with developer documentation and open-source workflows

Preferred Qualifications

• Maintainer or active contributor to an open-source project

• Worked in a startup that scaled from pre-seed or seed to Series A with under 10 team members

• Understanding of web privacy standards like GDPR or TCF

• Background in performance tuning or web compliance

• Comfort running community conversations and issue discussions