Lead Backend Software Engineer (NestJS to Java Migration)

Description Who we are: The EDAG Group is a globally leading, independent engineering services provider that combines excellent engineering with the latest technology trends. With a global network of some 60 branches, the EDAG Group realizes projects in the Vehicle Engineering, Electrics/Electronics and Production Solutions segments. Drawing on more than 50 years of engineering experience, EDAG's proprietary 360-degree development approach has become a hallmark of quality in the holistic development of vehicles and smart factories. The company's interdisciplinary expertise in the areas of software and digitization provides it with crucial skills to actively shape dynamic transformation processes as an innovative partner. With an interdisciplinary team of around 8,600 experts, the EDAG Group develops unique mobility and industrial solutions for customers that include the world's leading automotive and non-automotive companies. The company is listed on the stock exchange since 2015 and generated revenues of € 796 million in 2022. This is how you will grow: We are seeking a highly skilled expert to develop and own the migration of our existing NestJS services to a Java-based microservices architecture. In this role, you will lead the entire migration process—from planning and design to backend development, execution, and final delivery—ensuring a seamless transition and minimal disruption to our services. Complete Code Migration o Rewrite and refactor NestJS (TypeScript) backend services into Java microservices (e.g., Spring Boot). o Ensure minimal service disruption and maintain backward compatibility. Architecture & Design o Independently define and implement the new Java microservices architecture. o Set best practices for microservices communication, data management, and performance optimization. Testing & Validation o Write comprehensive tests (unit, integration, performance) to validate the migrated codebase. o Ensure the system meets reliability and performance benchmarks expected in automotive supply chain solutions. Documentation o Document the new architecture and migration process to enable future maintenance and enhancements. o Provide regular status updates to stakeholders on migration progress, risks, and timelines. Troubleshooting & Maintenance o Diagnose and fix issues that arise during the migration, ensuring a stable release. o Provide knowledge transfer or handover documentation upon contract completion. Requirements This is how you will take us forward: NestJS& TypeScript Expertise o 3–4 years of hands-on experience building and deploying NestJS applications. o Deep understanding of TypeScript design patterns, decorators, and module architecture. Java and Microservices o 10+ years of professional experience in Java (preferably with Spring Boot). o Proven ability to design and implement microservices at scale (REST, messaging, distributed transactions). o 10+ years of professional experience in Java (preferably with Spring Boot), with a strong background in concurrency and multi-threading. o Expertise in designing and implementing microservices at scale (REST, messaging, distributed transactions), including advanced concurrency patterns and performance tuning. o Familiarity with memory management, garbage collection tuning, and distributed caching to optimize throughput in high-traffic environments. o Proven ability to diagnose and resolve concurrency issues in distributed systems, ensuring reliability and scalability under heavy load. Event-Driven Architecture o Experience with MongoDB change streams o Practical experience with Kafka (topic setup, message schemas, connectors). o Ability to migrate event-driven processes from Node.js to Java seamlessly. Independent Delivery o Demonstrated track record of working on complex technical projects, with minimal supervision. o Excellent accountability and ownership attitude. Communication o Strong written and verbal communication skills for stakeholder updates. o Ability to provide clear and concise technical documentation. Preferred Qualifications: • Strong experience with AWS is a plus • Experience with Spring Cloud microservices (Eureka, Config Server, etc.). • Familiarity with containerization (Docker, Kubernetes). • Knowledge of CI/CD pipelines (e.g., Jenkins, GitLab, AWS CodePipeline). • Automotive or supply chain industry experience (telemetry, vehicle diagnostics) is a plus.

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