About Polar

It’s never been easier to build, ship, and scale software. We believe monetizing software and building a business around it should be just as easy.

We’ve been called “The Vercel of Billing,” and our mission is to build the world’s most beloved billing platform for developers - from open source maintainers and indie hackers to startups and large enterprises.

We’re built open source, remote-first, and focused on shipping high-quality software and innovative SDKs that empower developers to move faster and worry less about billing - entrusting it to us instead.

About the Role

We're hiring a Staff Frontend Engineer to help shape our architecture, standards, and user experience across both our dashboard and SDKs. You’ll lead the design and implementation of open source libraries that enable developers to integrate, customize, and deploy seamless billing flows - from checkout to post-purchase to customer portals.

You’ll also build end-to-end features in our dashboard that help developers manage their billing, customers, and businesses. This is a high-impact role with significant autonomy and ownership - your work will help define the future of billing for developers.

What You’ll Do

Shape the future of billing for developers - starting by designing APIs and SDKs that feel like magic, and working backwards through backend, infrastructure, operations, and even business needs to make it real

Build and ship delightful UIs and dashboard features using TypeScript, React, and Next.js

Design and maintain open source packages - components, hooks, and libraries that developers use to build custom billing experiences (think Shadcn for billing)

Define front-end standards and architecture across our codebase

Continuously improve performance, reliability, and developer experience across all surfaces

Engage directly with customers on Discord, Twitter/X, and at events - listening deeply to their pain points, feature requests, and ideas for improvement

About You

5+ years of experience building high-quality front-end applications, libraries, and SDKs

Highly proficient in JavaScript/TypeScript; comfortable across multiple frameworks

Deep experience with React and Next.js

Passionate about developer experience and designing world-class SDKs/APIs

Excellent problem-solving skills and a clear communicator

Proven track record in fast-paced, high-autonomy startup environments

Bonus Points

You’ve shipped your own open source libraries or contributed meaningfully to others

You’ve built and monetized side projects or run your own startup

You care deeply about your craft—delightful animations, thoughtful edge-case handling, and developer-first ergonomics

Experience working with payments, billing, or developer tools

We Offer

Competitive compensation.

Remote-first & open source culture. Work from anywhere in Europe (CET ±2 hours) and contribute to Polar in the open

Generous workspace allowance. Budget for an initial home office setup or co-working membership

High ownership. Help shape our product, architecture, open source libraries, SDKs, and developer experience from the ground up

Twice-yearly team offsites. We gather in our teammates’ cities to experience their local life, brainstorm the future, and write pseudo-code for what delightful billing should look like

Fast-moving and pragmatic environment. A small, senior team focused on momentum over perfection. We cut scope before we cut craft to keep shipping fast and iterating often

Mission with leverage. Build tools that empower other builders; your work compounds through theirs

About the Team

We’ve written books on FastAPI, built Shop.app & Shop Pay, helped ship the Battlefield React UI, and contributed to (and maintained) a lot of open source. We’re ex-founders and open source maintainers who care deeply about craft, velocity, entrepreneurship, and developer experience.

How to Apply

Submit your application with a suggestion on how to improve Polar's developer experience today - we’d love to hear your ideas.

Process

Our entire process is fully remote, and all communication happens via email, GitHub issues/PRs, and video calls. Here’s what to expect:

Application Review - We’ll review your application and may reach out for a 15–30 minute video call with Birk (Founder)

Team Interviews - You’ll meet a few team members for a deeper technical and cultural conversation

Open Source Assignment - We’ll follow up with a GitHub issue scoped within Polar or one of our open source dependencies. You’ll collaborate with us asynchronously—from your first PR draft to final merge

Final Call - A video chat to discuss your work, your feedback, and suggestions on how to improve the DX of working with Polar

Reference Calls. We believe reference calls are great and help us confirm our impression and ramp up our understanding and abilities to ensure we hit the ground running productively.

Offer 🎉

Staff Frontend Engineer (Europe)

Job Description