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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.
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.
Participate in AWS infrastructure optimization and implementation:
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.
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
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