Senior Java Developer

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