Trainee Software Development – Java, Spring

Role Overview

• Onboarding & fundamentals: You will systematically deepen your knowledge of Java and Spring and progress step by step toward becoming a professional software developer.
• Program focus: As part of our trainee program, we will specifically prepare you for your first client project and intentionally develop our talent internally and sustainably.
• Hands-on practice & technology stack: Early on you will work practically with a modern technology stack (Spring Framework, including Web, Security, Data, Cloud; web services; testing; relational databases; NoSQL; container technologies; Kubernetes; cloud infrastructure) and engage intensively with software architecture and modern architectural principles—applied in realistic project scenarios.
• Feedback & professional practice: Regular code reviews, pair-programming sessions and structured feedback rounds support you in writing clean, maintainable code and working professionally within a team.
• Knowledge sharing & growth: In our Skill Factories you will lead short sessions for other trainees or colleagues. This helps you consolidate your knowledge and further develop your presentation and coaching skills.
• Expanding your skill profile: In addition to Java, you will acquire knowledge in AI and cloud technologies and learn how modern software development works in these areas.

Requirements

• Solid Java experience, frameworks & backend fundamentals: You have already gained several months of practical experience with Java—for example through university projects, working-student positions, internships or your own substantial projects—and have not just ‘taken a look’, but have developed regularly with Java.
• You have hands-on experience with Spring / Spring Boot and are familiar with fundamental concepts such as REST, dependency injection and basic web services.
• Object-orientation & Clean Code: You understand object-oriented programming and can confidently apply concepts such as classes, interfaces, inheritance and encapsulation.
• You ideally already have exposure to Clean Code principles and design patterns.
• Tooling & development workflow: You are experienced using Git for version control.
• You have initial experience with debugging and logging and know how to analyze errors systematically.
• You work confidently with development environments such as IntelliJ IDEA.
• Agile working: You know that Scrum in software development has nothing to do with rugby and have ideally already worked in an agile setup or are familiar with the basic principles.
• Willingness to learn & independence: You are highly motivated to advance professionally, enjoy learning independently and handle feedback openly. You have a quick grasp and enthusiasm to dive deep into modern software development.
• On-site presence & language: You are willing to work regularly (approx. 3 days per week) at our office in Bonn-Bad Godesberg.
• You speak German at a native level and can communicate well in English.

Tech Stack

• Cloud
• Java
• Kubernetes
• NoSQL
• Spring
• Spring Boot
• SpringBoot

Benefits

• Experienced trainers: Benefit from our proven trainee concept—over the past ten years we have successfully supported more than 40 trainees on their path.
• Attractive compensation: A fair base salary during the program plus a performance-related component once you are ready for your first client project.
• Team & culture: With us you will experience cohesion, collegial collaboration and an open feedback culture.
• Development: You will develop your potential with the support of experienced trainers who bring knowledge from real project work—this is part of our company DNA.
• Innovative projects and a creative environment: You will work on exciting projects in a creative and dynamic environment with plenty of room for your own ideas and personal growth.
• Modern technology set: Work with current technologies and the opportunity to acquire skills in AI and/or cloud alongside Java.