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Senior Java Developer at TechBiz Global GmbH. Location Information: Germany. At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Senior Java Developer. . to join one of our . clients. ' teams with 6 months contract with . possibility to extend. . If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.. 🔧 . Java Development:. Design, develop, test, and maintain scalable Java-based backend applications.. Write clean, efficient, and well-documented code using . Java 11+. and . Spring Boot. .. Design and implement RESTful APIs and microservices architectures.. Optimize performance and ensure high availability of backend components.. Conduct code reviews, unit testing, and integration testing.. Troubleshoot and resolve complex technical issues across environments.. ☁️ . Cloud & Infrastructure (AWS):. Participate in AWS infrastructure optimization and implementation:. Centralized monitoring via . CloudWatch alarms. Multi-account structure. setup via . AWS Organizations. Security hardening (IAM policies, SSM Secure Strings). Deployment pipelines using . AWS CDK. and Infrastructure as Code (IaC). Cost-efficiency strategies including . Aurora Serverless. , rightsizing, and savings plans. Work closely with DevOps/Cloud teams to ensure smooth CI/CD processes.. 👥 . Team Collaboration & Coordination:. Coordinate and communicate regularly with German-speaking stakeholders (. C1 German required. ).. Collaborate with offshore team members in Vietnam (. English B2+ required. ).. Take initiative in planning, prioritizing, and delegating development tasks.. Provide technical mentorship to junior developers as needed.. Requirements:. 8+ years of commercial experience with Java. Strong expertise with . Spring/Spring Boot. , JPA/Hibernate, REST APIs. Solid background in . cloud-native development. with . AWS. Experience with . CI/CD. , Git, and modern DevOps workflows. German – C1 level. (mandatory). English – B2 level. (for internal collaboration). Strong communication, organizational, and team leadership skills. Experience working in agile/Scrum environments