Senior Java Developer

Key Duties and Requirements: A Roadmap to Your Professional Success

Scope of responsibilities:

• Designing and developing backend services using Java 17+ and Spring Boot (JEE is not applicable for this project).
• Building and maintaining scalable microservices-based architecture.
• Developing and maintaining RESTful APIs.
• Working with distributed systems and messaging using Apache Kafka.
• Integrating applications with PostgreSQL databases.
• Implementing authentication and authorization using Keycloak.
• Ensuring observability with Prometheus and Grafana.
• Deploying and maintaining services in AWS using Docker and Kubernetes (EKS).
• Supporting CI/CD pipelines using Flux and Git-based workflows.
• Troubleshooting and debugging complex issues in distributed environments.
• Writing clean, testable code with unit and integration tests.
• Participating in the full SDLC: analysis, design, implementation, testing, and deployment.
• Collaborating with cross-functional teams (frontend, product owners, DevOps, ICT).

Here’s a set of skills we require:

• 8+ years of professional experience with Java.
• Strong hands-on experience with Spring Boot (JEE is not applicable).
• Solid understanding of microservices architecture and distributed systems.
• Experience building RESTful APIs.
• Strong relational database experience (PostgreSQL preferred).
• Hands-on experience with Apache Kafka (messaging).
• Experience with Redis.
• Familiarity with Keycloak (authentication and authorization).
• Experience with Prometheus & Grafana (observability).
• Experience deploying applications in AWS.
• Hands-on experience with Docker and Kubernetes (EKS).
• CI/CD experience with Flux and Git pipelines.
• Unit and integration testing experience.
• Strong problem-solving skills and ability to work independently.
• Proactive mindset and ownership of delivered solutions.
• At list Upper-Intermediate level of English
• Polish language - native
• Architectural thinking: understanding the rationale behind microservices patterns and design decisions.
• End-to-end SDLC ownership: from analysis and design through development, testing, and deployment.

Nice to have experience with:

• Agile methodologies (Scrum, Kanban).
• High-volume databases, query optimization, and performance tuning.
• Production system maintenance.
• Advanced cloud services and containerization.

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