Senior Java Software Engineer

🕒 August 18

🇩🇪 Germany – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 18%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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MTG AG

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 1995

💼 Consulting

🏥 Healthcare

🏭 Manufacturing

Consulting • Healthcare • Manufacturing

<MTG AG> MTG AG is a German IT security company specializing in cryptographic key and identity management for enterprises. It provides managed services and on-premises solutions for Certificate Lifecycle Management (CLM), Public Key Infrastructure (PKI), Key Management Systems (KMS), and Hardware Security Modules (HSMs), and offers consulting around post-quantum cryptography (PQC) readiness. MTG serves regulated industries such as energy, manufacturing, public sector, healthcare and mobility, focusing on secure deployment, automation, and compliance.

📋 Description

• Design, develop and maintain high-quality software solutions for complex distributed business applications • Contribute to technical design decisions and help evolve the architecture of our software platforms • Write clean, maintainable and well-tested code following modern software engineering best practices • Build secure, resilient and high-performance services with a strong focus on reliability, maintainability and operational excellence • Optimize application performance, resource utilization and system responsiveness • Design robust APIs and integrate distributed systems using modern communication patterns • Ensure software quality through automated testing, code reviews, documentation and continuous improvement • Collaborate closely with Product Owners, architects, QA engineers and international development teams throughout the software lifecycle • Mentor less-experienced developers by sharing knowledge, promoting best practices and contributing to technical excellence • Stay up to date with new technologies and proactively identify opportunities to improve our products and development processes

🎯 Requirements

• 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) • Strong expertise with Spring Boot, Spring Cloud, Spring Security and the Spring ecosystem • Extensive experience designing and implementing RESTful APIs • Deep understanding of distributed systems and microservice architectures • Solid knowledge of JPA/Hibernate and relational databases; experience with NoSQL databases is a plus • Strong 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 communication skills • Fluent in English and German, both written and spoken

🏖️ Benefits

• Competitive salary depending on qualifications • Flexible working hours • Home office and remote work options • Respect for work–life balance • Training opportunities for new technologies • Career development and advancement opportunities • Innovative, modern and friendly working environment • Fully equipped, easily accessible workplace