Senior Engineer - SDK

About the role

• This is a ground-up opportunity to shape how thousands of developers send data into RudderStack - powering the pipelines that move 300+ billion events every month. You'll own the SDKs that sit at the heart of our platform - the very first component every customer touches.
• This role blends craft and impact. You'll write code that lives inside our customers' products, powering analytics, personalization, and AI systems behind the scenes.
• If you're the kind of engineer who obsesses over performance, cares about every byte shipped, and takes pride in building tools developers love - this is your place.
• Your code will run everywhere. Your users will be developers themselves. And you'll build the foundation that powers how enterprises interact with their customer data in the AI era.

Why This Role Matters

Every RudderStack customer relies on the SDK to move data from their apps to the warehouse.

When tracking fails, analytics break. When performance drops, user experiences suffer.

You'll make the invisible visible-ensuring billions of events reach their destinations reliably.

Your work will define trust, performance, and developer happiness across the RudderStack ecosystem.

The Builder's Mindset We Seek

• You care about craft-how a few lines of code can impact billions of events.
• You balance speed with quality and simplicity with reliability.
• You see SDKs as a product, not just code. You build with empathy for developers integrating your work in complex environments.

What You'll Master Here

• Lazy loading, tree-shaking, and bundle optimization
• Fault-tolerant event delivery with retries and offline support
• Developer tools and debugging utilities that improve customer experience
• Observability and analytics for SDK performance and reliability

Qualifications

• Experience with bundlers (Webpack, Rollup, Vite, ESBuild)
• Proven track record in optimizing performance and reducing bundle size
• Knowledge of privacy and security (GDPR, CCPA, CSP, XSS, encryption)
• Excellent documentation and communication skills

Remote (Tel Aviv-Yafo, Tel Aviv District, IL)

Remote (Berlin, Berlin, DE)