SDK Engineer - JavaScript

📋 Description Build, maintain, and evolve JavaScript and TypeScript SDKs that provide reliable and intuitive Design and implement new SDK features by identifying developer needs, proposing solutions, and Work in public repositories by managing issues, reviewing external contributions, maintaining Own the developer experience around TypeScript types, ensuring accurate autocomplete, type Ensure SDK compatibility across multiple environments, including Node.js, browsers, Deno, Bun Develop and improve realtime functionality, including WebSocket connections, reconnection 🎯 Requirements Expert-level experience with TypeScript and JavaScript, including advanced knowledge of generics Proven experience building or maintaining published libraries, SDKs, or developer-facing platforms Strong understanding of open-source development practices, including issue management, pull request Experience with npm packaging, including ESM/CJS builds, export maps, module resolution, and Strong testing mindset with experience creating unit tests, type-level tests, end-to-end tests, and Experience designing and maintaining public APIs where backward compatibility and developer 🎁 Benefits Fully remote work environment with the flexibility to work from anywhere. Global team culture with asynchronous workflows and high autonomy. Equity ownership opportunity through an employee stock option program. Technology allowance to help create an ideal home working setup. Health insurance coverage for employees and support for dependents. Annual company off-sites for collaboration, connection, and team building.