Senior Java Software Engineer (w/m/d)

Your mission

• Design, development, and maintenance of high-quality software solutions for complex distributed business applications
• Helping shape technical design decisions and contributing to the architecture and further development of our software platforms
• Developing clean, maintainable, and thoroughly tested code in accordance with modern software engineering best practices
• Building secure, fault-tolerant, and high-performance services with a strong focus on reliability, maintainability, and operational excellence
• Optimizing application performance, resource utilization, and system responsiveness
• Designing robust APIs and integrating distributed systems using modern communication patterns
• Ensuring software quality through automated testing, code reviews, documentation, and continuous improvement
• Collaborating closely with product owners, architects, QA engineers, and international development teams throughout the entire software lifecycle
• Mentoring less experienced developers by sharing knowledge, promoting best practices, and contributing to technical excellence
• Staying up to date on new technologies and proactively identifying opportunities to improve our products and development processes

Your profile

• Bachelor’s or Master’s degree in computer science, software engineering, or a related field
• 10+ years of professional experience in software development
• Excellent knowledge of Java (Java 21/25 or newer)
• Extensive expertise with Spring Boot, Spring Cloud, Spring Security, and the Spring ecosystem
• Extensive experience in the design and implementation of RESTful APIs
• Deep understanding of distributed systems and microservice architectures
• In-depth knowledge of JPA/Hibernate and relational databases; experience with NoSQL databases is a plus
• Solid understanding of software architecture, design patterns, and Clean Architecture principles
• Experience designing highly available, fault-tolerant, and maintainable enterprise applications
• Strong understanding of concurrency, asynchronous processing, and performance optimization
• Experience with CI/CD pipelines, Git, Maven/Gradle, Jenkins, GitLab CI, or similar tools
• Experience with automated testing, integration testing, and test-driven development (TDD)
• Excellent analytical skills, problem-solving abilities, and strong communication skills; fluency in spoken and written English and German

Why us?

• Competitive salary based on qualificationsFlexible work hours
• Work-from-home and remote options
• Emphasis on work-life balance
• Opportunities for training in new technologies
• Career opportunities and opportunities for professional development
• Innovative, modern, and friendly work environment
• Fully equipped, easily accessible workspace
• For more information, visit: https://www.mtg.de/en/career/why-mtg/