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Senior Java Developer (Java 17/21 | Spring Boot | Cloud-Native | Microservices) Summary: Key Responsibilities: - Design, develop, and deploy scalable, secure, and high-performance backend systems using Java (JDK 17/21) and Spring Boot. - Architect and implement microservices-based solutions with REST/gRPC APIs and event-driven patterns (Kafka/RabbitMQ). - Drive CI/CD automation using up-to-date pipelines (GitHub Actions, Jenkins, GitLab CI). - Implement secure coding practices and integrate DevSecOps tools (SAST, DAST, dependency scanning). - Optimize performance, scalability, and cost-efficiency of distributed systems. - Collaborate with product managers, architects, and cross-functional teams in Agile/Scrum environments. - Lead code reviews, enforce coding standards, and mentor junior engineers. - Contribute to architectural decisions and technology roadmap. Required Qualifications: - Bachelors or Masters degree in Computer Science or related field. - 8+ years of experience in Java backend development. - Strong expertise in Java (JDK 17 or higher), Spring Boot, and Spring ecosystem (Spring Cloud, WebFlux is a plus). - Proven experience with microservices and distributed systems design. - Hands-on experience with cloud platforms (AWS, Azure, or GCP). - Strong understanding of REST APIs, API gateways, and service mesh concepts. - Experience with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis). - Proficiency in containerization (Docker) and orchestration (Kubernetes). - Experience with CI/CD and infrastructure-as-code (Terraform or similar). - Solid understanding of design patterns, data structures, and system design. - Strong problem-solving and communication skills. Nice to Have: - Experience with reactive programming (Spring WebFlux, Project Reactor). - Exposure to GraphQL APIs. - Familiarity with AI/ML integrations or data pipelines. - Experience in frontend frameworks (React/Angular) for full-stack contributions. - Knowledge of FinOps or clou .
Here's where they are and how to stand out in your next interview.
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Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.