Kotlin / Java Developer

📍 Location: Kraków, Poland (hybrid - 6 days per month in the office)📄 B2B Contract: 180 - 230 PLN / hour

We are looking for a Kotlin / Java Developer to join an international project delivered for a large organization within the financial services sector. The team is building an internal engineering platform that supports development teams in managing software development standards, quality controls and compliance across the organization.

This role involves working on modern web applications and APIs built with Kotlin and Java, based on a microservices architecture. The scope of responsibilities will be adjusted to the candidate’s experience and technical profile.

Key Responsibilities:

• Collaborate with developers, testers and business stakeholders to build and operate internal products.

• Design, develop and implement backend features and selected UI components according to backlog priorities.

• Build and maintain APIs and microservices that address real business and engineering challenges.

• Work closely with the wider engineering team to design and deliver new features.

• Proactively engage with internal users to resolve issues and respond to feature requests.

• Contribute within an Agile, CI/CD-driven environment enabling frequent and stable releases.

• Participate in code reviews and support quality through testing, including automated test scripts.

Requirements:

• Commercial experience with Kotlin, or Java with a strong willingness to learn Kotlin.

• Hands-on experience in at least 2 of the following areas: API development, SQL / databases, HTML / JavaScript.

• Experience working with collaboration tools such as Jira, Confluence and Bitbucket.

• Solid understanding of microservices architecture.

• Strong analytical and troubleshooting skills.

• Good communication and collaboration skills.

• English proficiency at B2+ level.

Nice to Have:

• Experience with Jenkins and CI/CD pipeline design.

• Knowledge of test automation practices.

• Familiarity with cloud platforms such as AWS, Azure or GCP.

• Background in system administration (Linux / AIX / WAS).

What We Offer:

• Long-term cooperation on an enterprise-scale international project.

• Exposure to modern technologies and microservices-based architectures.

• Real influence on the development of internal engineering platforms.

• Access to internal trainings, workshops and technical knowledge-sharing sessions.

• Private medical care (LuxMed) & Multisport card.

• Collaboration with experienced, international engineering teams.

Why apply for an Antal job offer?

When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process.

About Antal

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research.

Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

Discover our latest job openings: https://en.antal.pl/candidatesFollow us on LinkedIn: https://www.linkedin.com/company/antalpoland