Software Engineer (TypeScript/JavaScript)
Core
Building and maintaining a JavaScript client library and full-stack applications for a real-time market data platform serving trading firms.
Role type
mid-senior IC full-stack engineer (TypeScript/JavaScript)
Builds
JavaScript client library, front-end applications, and full-stack features for the Databento platform
Domain
Financial technology / Market data infrastructure
Deliverable
production ML models | product features
Required skills
TypeScript, JavaScript, React, Redux, Vite, Web Workers, WebSockets, N-API, node-addon-api, Wasm, Python, Rust, REST API design, database migrations, CI/CD, npm publishing, Storybook
Preferred skills
Experience with production-ready design systems, background in trading or quantitative finance, cross-functional collaboration with design teams
Technologies
TypeScript, JavaScript, React, Redux, Vite, Web Workers, WebSockets, N-API, node-addon-api, Wasm, Python, Rust, Figma, Storybook
Responsibilities
Own and maintain the JavaScript client library; Integrate native libraries using N-API or Wasm; Build responsive front-end applications; Contribute to backend work and API design; Translate design handoffs into production components; Maintain CI/CD pipelines; Document components
Seniority
Mid-level to Senior, hands-on IC