Senior TypeScript Backend Engineer - NodeJS & Java

Power Groupon's Next Chapter with AI-Driven Innovation from Valencia or Prague.

Are you a hands-on technical leader ready to shape the next generation of B2B platforms? Join Groupon at a pivotal moment as we transform our business with an aggressive AI-first strategy and modern technology stack. As our new Backend Engineer for Deal Management, you will drive the architecture, development, and impact of systems that empower local businesses worldwide-right from the ground up., * Deliver complex technical initiatives independently within high-availability, mission-critical systems.

• Lead technical reviews and contribute to architectural decisions, specifically driving TypeScript/Node.js migrations.
• Champion AI-assisted development by using tools like Cursor and Claude hands-on; mentor teammates on effective practices and prompt engineering.
• Communicate technical trade-offs clearly to both technical and non-technical stakeholders to ensure alignment on roadmap priorities.
• Own operational excellence by maintaining and improving SLOs, observability, and comprehensive documentation for your areas of ownership., * Architectural Impact: Active participation in design reviews that tangibly improve team-wide technical solutions.
• Mentorship: Effective coaching of junior engineers with a measurable impact on their technical growth.
• Risk Management: Maintaining clear documentation and proactively identifying risks before they impact the platform.

Do you have experience in Scalability?, * 6+ years of software engineering experience with deep proficiency in production-grade TypeScript, Node.js, and Java.

• A background in Java to support modernization and refactoring projects.
• Distributed systems expertise in high-traffic environments, including API design, monitoring, and advanced debugging.
• AI-Native workflow: Hands-on experience integrating AI coding tools (e.g., Cursor, Claude) into your daily development cycle.
• Strong communication skills and a proven ability to drive cross-functional collaboration.
• Set engineering quality bars by driving best practices around code reviews, testing strategy, security, and performance, ensuring long-term maintainability and scalability of the platform., * Experience scaling E-commerce or marketplace platforms.
• Open source contributions or practical experience with AI/ML integration.
• Experience owning systems end-to-end, including design, development, rollout, and post-production support in fast-moving environments.
• Strong fundamentals in data modeling, system performance optimization, and resilience patterns.
• Prior experience influencing technical direction beyond your immediate team (RFCs, design docs, tech talks, or migration leadership).

Groupon is a marketplace where customers discover new experiences and services everyday and local businesses thrive. To date we have worked with over a million merchant partners worldwide, connecting over 16 million customers with deals across various categories. In a world often dominated by e-commerce giants, we stand out as one of the few platforms uniquely committed to helping local businesses succeed on a performance basis. Groupon is on a radical journey to transform our business with relentless pursuit of results. Even with thousands of employees spread across multiple continents, we still maintain a culture that inspires innovation, rewards risk-taking and celebrates success. The impact here can be immediate due to our scale and the speed of our transformation. We're a "best of both worlds" kind of company. We're big enough to have the resources and scale, but small enough that a single person has a surprising amount of autonomy and can make a meaningful impact.