(Senior) Fullstack Software Engineer (m/w/d) – Credit Card Comparison Platform

About this job

We are CHECK24 - the leading German comparison platform with 20 million customers and over 50 products in comparison. 

In our Credit Card team, we deal with a real-world complexity: many banks, many credit card products, and very different technical requirements. The challenge is to turn all of that into a simple, fast, and fully digital comparison experience for our customers. Behind the scenes, this involves handling complex bank integrations, processing large-scale data, building flexible application flows, and using AI- assisted comparison to help customers find the best credit card for their needs — all running on a distributed microservice architecture that enables instant credit card applications without paperwork.

We are looking for a (Senior) Fullstack Software Engineer  (m/w/d) (Java & React) to join our international, high-impact team at CHECK24 Vergleichsportal Karten & Konten GmbH in Munich. The role offers ownership over architecture and product direction, collaboration in a feedback-driven environment, and the freedom to explore modern tools, including AI-assisted development, to solve meaningful problems.

Your Qualifications

• Degree in Computer Science, Natural Sciences, or equivalent technical field
•  5+ years professional experience in software development, ideally in agile environments
• Strong expertise in Spring Boot microservices and modern React frontends
• Skilled in CI/CD pipelines with Git, Maven, Jenkins, Docker
• Deep understanding of software architecture and clean code principles
• You are enthusiastic about new things, have a hands-on mentality and don’t think that your job stops at the moment you commit your code
• You have good spoken and written knowledge of English (min. C1) - German is a plus 

About this job

• Design and evolve innovative services for our credit card comparison platform
• Take ownership of the full software lifecycle: design, implementation, deployment, and monitoring
• Build across the stack: from the frontend (React), backend (Spring Boot), to databases (PostgreSQL, MongoDB) and platform components (such as MCP servers)
• Integrate with complex third-party systems, including banks and communication providers
• Translate business requirements into technical solutions with Product Owners
• Mentor peers through constructive code reviews, establishing best practices, and knowledge sharing

What We Offer

• Experience and stability: More than 25 years of successes and failures shared across the group in over 15 locations
• We value your commitment: Permanent contracts and an attractive compensation package with annual bonuses for outstanding performance, including vouchers for numerous CHECK24 products and special rates at partner fitness studios
• We support your growth: You receive a personal training budget for conferences, books, and online courses of your choice
• The Checkito-Spirit: We believe that excellent online products are built by excellent teams. That’s why team events, networking opportunities, and our legendary summer and Christmas parties are a natural part of everyday work
• Food & Drinks: In addition to one free meal per day (breakfast or lunch), we provide fresh, regionally sourced fruit, and you are welcome to enjoy a wide selection of drinks at any time
• Sustainable mobility: Our centrally located office enables easy commuting by public transport or bicycle. We support this with a subsidized Germany Ticket and offer company bike leasing options