Mid Java Developer

Salary: 600-900 PLN/MD on B2B

Work model: hybrid from Gdynia / Gdańsk / Warszawa / Rzeszów / Kraków (3 days per week from the office)

 

Why choose this offer?

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• Opportunity to build a fintech platform from scratch (greenfield project)
• Real impact on architecture and core backend services from day one
• Work in an event-driven, microservices-oriented environment
• Collaboration within a cross-functional, international team
• Work on a large-scale financial platform in the banking domain

 

Project

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We are building a fintech platform from the ground up for a financial institution operating in the banking products space. As a Java Developer, you will be part of a cross-functional squad responsible for designing, developing, and delivering backend services for this greenfield product. You will work closely with your Tech Lead, Senior Developer, Business Analyst, and QA Engineer within a mixed frontend-backend squad.

This is a unique opportunity to shape the architecture and codebase of a large-scale financial platform from day one, working in an event-driven, microservices-oriented environment.

 

Responsibilities you'll have:

• Design, develop, and maintain backend services and APIs for the fintech platform in greenfield project
• Implement business logic in Java using the Spring framework within an event-driven architecture
• Work with Postgres databases - design schemas, write queries, and ensure data integrity
• Collaborate within a cross-functional squad (Tech Lead, Senior Developer, BA, QA, Frontend Developers) to deliver product increments
• Participate in code reviews, technical discussions, and architectural decisions within the squad
• Write clean, testable, and well-documented code following team standards and best practices
• Contribute to continuous improvement of development processes and tooling
• Communicate progress, blockers, and technical decisions in English to team members and stakeholders

Expected competences and knowledge:

• Min. 3 years of commercial experience in Java backend development (mid-level proficiency expected)
• Hands-on experience with the Spring framework (Spring Boot, Spring MVC, or Spring Cloud)
• Experience with event-driven architecture (message brokers, asynchronous processing, event sourcing or similar patterns)
• Working knowledge of Postgres or comparable relational databases (schema design, SQL, migrations)
• Fluent English - the ability to communicate freely in a professional setting (spoken and written)

Nice to have: 

• Experience with Kafka or similar distributed messaging/streaming platforms
• Familiarity with Google Cloud Platform (GCP) services
• Experience with Kubernetes (K8s) and containerized deployments
• Prior experience working in the financial services or banking domain
• Experience building systems from scratch (greenfield projects)

 

Technologies you'll work with

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• Java
• Spring (Spring Boot, Spring MVC, Spring Cloud)
• PostgreSQL
• Event-driven architecture

Nice to have:

• Kafka
• GCP
• Kubernetes

 

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

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The client is a fintech institution operating in the Kingdom of Saudi Arabia, focused on modernising its digital capabilities and expanding its offering for micro-SME customers. It is an organisation with a strong market presence and a clear strategic commitment to innovation, aiming to deliver banking experiences that are fully digital, user-friendly, and deeply integrated with day-to-day business needs.

 

 

About Jit Team

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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 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.

Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.