Senior Java Developer

Jit Team; Poznań; Hybrid; PLN 203,000 - 258,000; Full time

Job summary

Jit Team is seeking a senior Java backend engineer to design and maintain modern backend applications based on Java, Spring Boot, and microservices. You will design scalable solutions, develop REST APIs, work with relational databases, and support automated deployment processes.

The role emphasizes strong English communication in an international environment and a hybrid work model from Poznań, with a preference for one day in the office per week.

Qualifications

• 8+ years hands-on experience with Java and Spring Boot.
• Strong experience in REST API design and microservices architecture.
• Solid understanding of relational databases and SQL.
• Experience in CI/CD pipelines and automated deployment workflows.

Responsibilities

• Design and implement scalable backend solutions.
• Develop REST APIs and manage microservices architecture.
• Work with relational databases and optimize SQL queries.
• Support automated deployment processes and CI/CD pipelines.

Skills

Java

Spring Boot

REST API design

Microservices

SQL

CI/CD

Docker

Kubernetes

AI tools

English

Tools

Docker

Kubernetes

Job description

Salary: 1100-1400 pln/day on B2B Work mode: hybrid from Poznań (preferred 1 day / week in the office)

Why choose this offer?

• You can expect a flexible work organization
• The international work environment will give you the opportunity to interact with the English language on a daily basis
• The Jit community will bring you a nice time during regular integration meetings

Project

The project focuses on the development and maintenance of modern backend applications based on Java and microservices architecture. The role involves designing and implementing scalable solutions, developing REST APIs, working with relational databases, and supporting automated deployment processes. The team works with modern engineering practices and explores AI-assisted development tools to improve software delivery and development workflows.

Expected competencies and knowledge

• At least 8 years of hands-on experience in Java, and Spring Boot
• Good knowledge of REST API design and microservices architecture
• Solid understanding of relational databases and proficiency in SQL
• Experience in CI/CD pipelines to ensure smooth and automated delivery
• Experience in package and deploy applications using Docker
• Eagerness to explore and implement Agentic AI tools (e.g., Copilot, Cursor, Claude Code) to accelerate engineering workflows
• Excellent verbal and written English skills, along with strong communication abilities

Nice to have

• Experience in cloud solutions
• Experience with event-driven architectures, including Kafka and messaging solutions such as RabbitMQ

Technologies you'll work with

• Java 17+
• Spring Boot
• REST API
• SQL
• CI/CD
• Docker
• Kubernetes
• Microservices

About Jit Team

The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.