Senior Product Engineer (Europe)

About Polar

About the Role

What You’ll Do

• Ship daily towards building the best monetization platform for developers in the world
• Design, build, and ship features, enhancements and delights end-to-end – jumping between frontend, backend, and infrastructure
• Collaborate with the team on architecture design, best practices, and ensuring high-quality code across our stack.
• Contribute to scaling our infrastructure to handle growing traffic and complexity, including optimizing database queries and services for performance.
• Continuously improve the quality of services and the overall developer experience.
• Engage frequently with our developer community to identify pain points and solve them

About You

• 5+ years of experience building, shipping and scaling high-quality software.
• You're an ex-founder/startup CTO, open source maintainer or have side hustles
• You ship fast and can solve any problem thrown at you
• Strong proficiency with our stack or a variety of similar programming languages and ability + desire to quickly learn and pickup new tools.
• Strong problem-solving abilities with an eye for developer experience
• Experience with cloud infrastructure and multi-cloud environments.
• Experience working with DevOps and comfortable maintaining, scaling and improving our infrastructure and participating in on-call
• Excellent collaboration skills - comfortable working closely with a small, high-performing team. It's a startup so we all have to lean-in across the board to
• You care deeply about your craft - be it delightful animations, thoughtful edge-case handling, developer experience or performance optimizations.
• (Bonus) Experience working with payments, billing, or developer tools

Our Stack

• Frontend: React & Next.js with Tailwind CSS, Shadcn, TanStack Router and more.
• Backend: Python (FastAPI), Postgres, Redis, Dramatiq,
• Cloud: Cloudflare, Render & AWS

We Offer

• Competitive compensation & equity.
• 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

How to Apply

Process

• 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 🎉