Senior Full-Stack Software Developer (m/f/d) AI Solutions, InsurTech

Health Insurance Hamburg

At a Glance

Senior

About this job

Help shape the future of digital insurance comparison with CHECK24.

At CHECK24, we drive innovation in the insurance world with passion and cutting-edge technology. Our goal: Germany’s best insurance comparison—simple, fair, and transparent. Using state-of-the-art tools, modern architectures, and AI technologies (LLMs, machine learning, and more), we develop smart features that offer real added value to millions of customers. In agile, cross-functional teams, we embrace quick decision-making, flat hierarchies, and genuine team spirit.

Do you want to do more than just develop software—do you want to shape the future of InsurTech with AI innovations? Then get started now as a Senior Full-Stack Software Developer (m/f/d) at CHECK24 Krankenversicherungen GmbH!

What You Bring to the Table

• A degree in computer science, natural sciences, or a comparable technical field is required.
• Several years of professional experience in software development (at least 4 years)—ideally in agile environments.
• Solid knowledge of at least two programming languages as well as experience working with relational databases.
• Practical experience with Symfony and/or React.
• Analytical thinking, self-motivation, and a desire to take on new challenges and responsibilities.
• Very good German language skills (C1), team spirit, and a desire to work in a team at the office.

Your responsibilities will include

• Continuously develop our applications and ensure quality, stability, and scalability through clean, high-performance code.
• Work across the entire stack—from frontend (React) to backend (Symfony, REST APIs) to databases and platform components.
• Integrate AI functionality (LLMs) into existing and new features in a production-ready manner.
• Optimize and scale our system landscape for performance, stability, and availability.
• Ensure high quality through code reviews, automated tests, and CI/CD pipelines.
• Take ownership of features or subcomponents—both functionally and technically—and actively contribute new ideas.

What CHECK24 offers you

• A work-life balance that fits your daily routine: From Monday to Thursday, we work together in the office; on Fridays, you can work remotely. We deliberately work on-site at our Hamburg office—because direct collaboration, quick coordination, and a genuine team spirit make all the difference in our day-to-day work.
• The best of both worlds: With us, you get the security and stability of an established company—combined with the drive, speed, and creative freedom of a startup. We think long-term while giving you the chance to actively shape processes and initiatives.
• Modern work with a genuine focus on the future—AI-first instead of old-school: You’ll work with modern technologies and use tools like ChatGPT Enterprise, Claude Code, Cursor.ai, and other AI applications as a matter of course in your daily work.
• Top-of-the-line equipment from day one: A fully equipped, ergonomic workspace with a high-performance MacBook, additional monitors, and a height-adjustable desk. Additional personal equipment like noise-canceling headphones or an ergonomic mouse? You’ll get those, too, of course.
• Challenging and varied tasks: Look forward to the freedom to actively shape processes and direct lines of communication with management.
• Growth that’s truly possible: Our strong growth creates real opportunities to quickly take on responsibility and develop both professionally and personally. To support this, we offer personalized training and development opportunities as well as a broad training catalog.
• Developer Experience: A large and unique developer community is looking forward to getting to know you! Deeply rooted in Hamburg’s tech community, we regularly host various meetups, code reviews, and guest speakers at our office
• Comprehensive Benefits Package: In addition to a competitive salary, you’ll benefit from vouchers for many CHECK24 products, generous support for your company pension plan, and a substantial subsidy for the EGYM Wellpass.
• Food & drinks on the house: Breakfast (selection of different cereals), lunch, fresh fruit, and hot and cold beverages are available to you free of charge all week long. In short: You have plenty to worry about—but not your meals at the office.
• Easy & sustainable commuting: Thanks to our central location, you can easily reach us by public transportation or bike. You’ll benefit from a completely free Deutschlandticket or a subsidy for your company bike lease.
• CHECKito Spirit / Team Spirit That’s Genuine: We work closely together, support one another, and celebrate successes as a team. Whether it’s lunch, foosball, after-work gatherings, or team and company events: You’ll find a relaxed environment here with a casual “first-name” culture and no dress code.

Do you have questions?

Maike Eckert

Maike.Eckert@check24.de

Please submit your application exclusively online via our application form.