Senior Engineer - SDK
RudderStackRemote (London, England, GB)
Posted February 3, 2026
Full Time
About the Company
RudderStack is a warehouse-native customer data platform enabling companies to collect, govern, and activate real-time customer data for analytics, personalization, and AI-powered applications.
Job Description
RudderStack is seeking a Senior Engineer - SDK to own the end-to-end development of their JavaScript SDK, responsible for collecting, governing, and activating real-time customer data for analytics, personalization, and AI-powered applications.
Requirements
- 6+ years of building production-grade SDKs or JavaScript libraries
- Deep understanding of web browser internals—Fetch/XHR, DOM, Storage, Cookies, CORS, CSP, Service Workers
- Strong JavaScript and TypeScript knowledge
- Experience with bundlers (Webpack, Rollup, Vite, ESBuild)
- Proven track record in optimizing performance and reducing bundle size
- Strong testing discipline (Jest, Mocha, Cypress, Playwright)
- Knowledge of privacy and security (GDPR, CCPA, CSP, XSS, encryption)
