Backend Developer, KRAKÓW

• Strong experience with Java 8+, Spring Framework, Spring Boot, Spring Cloud
• Hands-on experience with Kubernetes, Docker, databases, and public cloud platforms
• Deep understanding of Microservices Architecture and Event-Driven Architecture
• Strong knowledge of design patterns and principles (focus on scalability and maintainability)
• Expertise in designing and developing APIs (REST, GraphQL)
• Experience with both SQL and NoSQL databases (e.g. Oracle, PostgreSQL, MySQL, MongoDB, Cassandra)
• Experience with messaging/middleware technologies (e.g. Kafka, IBM MQ, RabbitMQ)
• Understanding of security mechanisms (JWT, OAuth, TLS, authentication & authorization)
• Experience with DevOps tools and CI/CD pipelines (e.g. Jenkins, GitLab, Kubernetes, Docker)
• Proven experience in technical leadership and working with cross-functional teams
• Ability to deliver end-to-end business applications with high quality and low maintenance overhead
• Basic understanding of frontend-backend integration

Backend Engineer (Hybrid – 2 days/week in the office)

We are looking for an experienced Backend Engineer to join a high-performing engineering team. In this role, you will be responsible for building scalable, high-quality backend systems and contributing to modern architecture initiatives.

Responsibilities

• Design and develop highly scalable, performant, and fault-tolerant applications


• Contribute to the evolution of Microservices and Event-Driven Architecture


• Collaborate with Solution Architects and Tech Leads to translate technical designs into production-ready solutions


• Design systems with a strong focus on security, infrastructure, and data governance standards


• Contribute to system and API design, ensuring modularity and maintainability


• Ensure coding standards and promote best practices in development, testing, and documentation


• Mentor junior engineers, conduct code reviews, and provide technical leadership


• Ensure compliance with relevant controls, standards, and service management practices


• Deliver high-quality solutions on time, aligned with business expectations


• Support team engagement, ownership, and a sustainable, high-quality delivery pace

Requirements: Java, Spring Framework, Spring, Boot, Kubernetes, Docker, Cloud platform, Microservices architecture, Design Patterns, REST API, SQL, NoSQL, Kafka, IBM MQ, Security, OAuth, TLS, DevOps, CI/CD