Lead Software Engineer - Core Operations Services (AI-first, Encore)

Lead Software Engineer - Core Operations Services (AI-first, Encore). This a technical leadership role in Groupon's core commerce systems handling 200K+ requests per minute, with significant contribution in the AI transformation., Hybrid from Valencia, Madrid, Prague, Warsaw or London

Core Operations Services powers Groupon's global marketplace, managing API gateways, deal catalogs, user identity, and image services across Java, Ruby, and TypeScript stacks. You'll contribute to the transition to typescript and Encore, collaborate across teams, and use AI tools to boost efficiency., * Shape technical strategy with leadership for high-availability systems.

• Lead cross-team design reviews and migrations to TypeScript/Node.js.
• Use AI tools like Cursor and Claude natively and share best practices.
• Articulate the importance of code quality in business language.
• Optimize strategies to maintain SLOs, observability, and documentation.

Do you have experience in Ruby?, * 5+ years engineering; production at scale.

• Distributed systems experience (200K+ RPM); API design, observability.
• Hands-on coding with AI.
• Strong communication for technical/non-technical audiences.

Nice to Have

• TypeScript/Node.js
• E-commerce or marketplace platforms.
• Java/Ruby and modernization.
• Open source contributions or AI/ML production., Experienced engineers who prioritize business context, embrace AI tooling, and deliver reliable systems in a transforming environment.

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.