Senior Java Developer NEW

Jit Team; Poland; Hybrid; PLN 220,000 - 360,000; Full time

Benefits offered by this job

Flexible work organization

International work environment with英语日

Scandinavian culture & training

Job summary

Jit Team in Poland seeks a Senior Backend Java Developer to join a team responsible for developing and maintaining Java-based applications. The solutions support tax compliance, customer account management, and investment services for pension and savings products.

You will build new features, enhance existing systems, and ensure compliance across markets. You will work in a hybrid model from Gdynia, Gdańsk or Warsaw, collaborating with analysts and engineers, mentoring peers, and applying Spring

Qualifications

• Proven senior-level experience in backend Java development.
• Strong knowledge of Java 21 and Spring ecosystem.
• Experience with Hibernate and OOP/design patterns.
• Relational databases experience (PostgreSQL).
• Experience designing and integrating APIs (OpenAPI/AsyncAPI).
• Familiarity with Git and CI/CD practices.

Responsibilities

• Design, develop, and maintain Java applications supporting savings and investment product.
• Build and enhance calculation engines to ensure compliance with changing tax regulations across multiple countries.
• Develop solutions supporting complex business processes, integrations with tax authorities, and client reporting.
• Participate in full software development lifecycle: requirements, design, implementation, testing, deployment.
• Collaborate with analysts to translate business requirements into technical solutions.
• Mentor team members, conduct code reviews, and promote engineering best practices.
• Utilize AI-powered tools and automation to improve product quality and productivity.

Skills

Senior Java

Java 21

Spring Boot

Hibernate

OOP & design patterns

PostgreSQL

Messaging (JMS/MQ)

API design (OpenAPI/AsyncAPI)

Git & CI/CD

Analytical thinking

Tools

PostgreSQL

JMS/MQ

OpenAPI

AsyncAPI

Git

CI/CD

Job description

Work model:

hybrid fr om Gdynia / Gdańsk / Warszawa (3 days per week from 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
• Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
• The Jit community will bring you a nice time duringregular integration meetings

Project

We are looking for a Senior Backend Java Developer to join a team responsible for developing and maintaining Java-based applications. The solutions support tax compliance, customer account management, and investment services for pension and savings products. In this role, you will be responsible for building new features, enhancing existing systems, and ensuring compliance with tax regulations across multiple markets.

Responsibilities you'll have

• Design, develop, and maintain Java applications supporting savings and investment product
• Build and enhance calculation engines that ensure compliance with changing tax regulations across multiple countries
• Develop solutions supporting complex business processes, integrations with tax authorities, and client reporting
• Participate in the full software development lifecycle, including requirements analysis, design, implementation, testing, and deployment
• Collaborate closely with business and financial analysts to translate business requirements into technical solutions
• Mentor team members, conduct code reviews, and promote engineering best practices
• Utilize AI-powered tools and automation to improve product quality, team productivity, and development efficiency

Expected competences and knowledge

• Proven senior-level experience in backend Java development
• Strong knowledge ofJava 21
• Hands-on experience withSpring Boot and the broader Spring ecosystem
• Solid understanding ofHibernate, object-oriented programming, and design patterns
• Experience working with relational databases and SQL, particularlyPostgreSQL
• Knowledge of messaging technologies and communication protocols such asJMS, MQ, or similar solutions
• Experience designing and integrating APIs usingOpenAPI and AsyncAPI
• Familiarity withGit and CI/CD practices.Strong analytical thinking and excellent collaboration skills

Technologies you'll work with

• Spring Boot
• Hibernate
• JMS, MQ andMessaging Technologies
• OpenAPI, AsyncAPI
• Git
• CI/CD

Client – why choose this particular client from the Jit portfolio?

Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.

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.