Senior Software Developer – Tech Lead, Java, Spring, Jakarta EE

Darum lohnt es sich

• Develop sophisticated Java and web applications across the frontend and backend • Contribute your expertise to client projects and develop sustainable solutions together with clients • Analyze existing systems and identify opportunities for modernization • Develop strategies for the effective evolution of established applications • Transform existing applications and architectures into modern, future-proof solutions • Apply Clean Code, Test-Driven Development, and DevOps practices • Assess current technologies, architectures, and trends for their suitability and practical application • Analyze complex technical challenges and optimize existing solutions • Integrate legacy systems with modern technologies • Work closely with colleagues and other teams • Provide technical consulting to clients, challenge existing approaches, and support the sustainable evolution of applications and architectures Requirements • Several years of experience in full-stack development • Strong backend focus in Java, ideally complemented by Kotlin or Python • In-depth knowledge of modern Java development with Spring, particularly Spring Boot and Spring Cloud • Solid experience with Jakarta EE and traditional enterprise application landscapes • Knowledge of application servers such as JBoss or WebSphere • Understanding of the differences and relationships between traditional and modern Java architectures • Ideally, experience modernizing applications and systems or supporting migrations to new architectures • Regular involvement in frontend development • Ideally, experience with React or Angular, as well as JSF or PrimeFaces • Experience with CI/CD pipelines, containerization, and cloud services • Ability to understand complex system landscapes and design and implement new technical solutions • Strong self-organization, team spirit, and outstanding problem-solving skills • Ideally, experience in leading projects or parts of projects • Native-level German • Confident communication skills in English Core Competencies Demonstrates expertise in Full-Stack Development with a strong focus on Java and modern frameworks, alongside the ability to analyze and modernize complex systems.

Proficient in applying Clean Code principles, Test-Driven Development, and DevOps practices while effectively collaborating with clients and teams.

Highest-signal resume keywords • Full-Stack Development • Java Development with Spring • CI/CD Pipelines • Frontend Development with React or Angular • Technical Consulting ATS Optimization Keywords Hard Skills • Java • Kotlin • Python • Spring Boot • Spring Cloud • Jakarta EE • CI/CD • Containerization • Cloud Services • Frontend Development Soft Skills • Problem-Solving • Self-Organization • Team Spirit • Communication Skills Industry Keywords • DevOps • Clean Code • Application Modernization • Technical Architecture • Enterprise Applications Tools & Technologies • JBoss • WebSphere • React • Angular • JSF • PrimeFaces