Senior Java Backend Developer

Java Backend Developer

📍 Location: Krakow, hybrid 3 days/week

📄 Contract: B2B

🧠 Experience: 10–12 years

About the Role:

We are looking for a skilled Java Backend Developer to join our team and contribute to building modern, scalable backend systems. You will be working with Java 17+, Spring Framework, and other cutting-edge technologies to develop and optimize microservices architectures. If you're passionate about clean code, performance tuning, and distributed systems, we’d love to hear from you!

Key Responsibilities:

• Design and develop robust backend applications using Java 17+ and Spring Framework 5+

• Work with distributed microservices architectures

• Design and implement RESTful APIs and integrate with frontend systems

• Manage relational (SQL) and NoSQL databases (PostgreSQL, MongoDB, etc.)

• Apply SOLID principles, Clean Code practices, and Domain-Driven Design (DDD)

• Collaborate with cross-functional teams using Agile methodology

• Optimize application performance and scalability for high-traffic systems

• Work with cloud technologies and deploy applications in Kubernetes

• Build and maintain CI/CD pipelines using tools like Jenkins, GitLab, Docker

• Participate in DevOps practices and improve automation and efficiency

Required Skills & Experience:

• 10–12 years of experience in Java development

• Expertise in Spring Framework (5+), Spring Boot, and Java 17+

• Strong understanding of microservices architectures

• Proficiency with relational (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Cassandra)

• Deep knowledge of SOLID principles, Clean Code, and Domain-Driven Design (DDD)

• Hands-on experience with CI/CD pipelines and DevOps practices

• Familiarity with cloud technologies (AWS, Azure, or GCP) and Kubernetes

• Experience with containerization tools like Docker

• Performance tuning and scalability experience in large-scale systems

• Excellent communication and collaboration skills

• Experience working in an Agile environment (Scrum/Kanban)

Nice to Have:

• Experience with Kafka, RabbitMQ, or other messaging queues

• Knowledge of Reactive Programming (Spring WebFlux, Project Reactor)

• Familiarity with monitoring tools (Prometheus, Grafana)

📩 If you’re interested and meet the qualifications, please send your CV to Veronika Lazareva at veranika.lazarava@dcvtechnologies.co.uk