April 24, 2026
FullStack Engineer Java
Mid • Hybrid
30,000 - 33,500 PLN/hr
Krakow, Poland
📍 Location: Kraków, Poland (hybrid - 2 days per week in the office)
📄 B2B Contract: 180 - 200 PLN / hour
We are looking for a FullStack Software Engineer to join an international project delivered for a large organization within the financial services sector. The team is working on a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, tax processing, and international transactions. This role focuses on developing and modernizing both backend and frontend components of the platform, contributing to the transition from legacy systems to a modern microservices-based architecture. You will work in an Agile, DevOps-driven environment, supporting scalable and high-performance solutions.
Key Responsibilities:
- Develop and maintain backend and frontend applications using Java (11/17/21) and React
- Build and support APIs and microservices within a distributed architecture
- Participate in modernization initiatives, including migration from legacy systems (e.g. mainframe, WebSphere) to microservices-based solutions
- Collaborate with cross-functional teams to design and deliver new features
- Improve system performance, scalability, and reliability
- Contribute to automation initiatives, including test automation and CI/CD improvements
- Increase Straight-Through-Processing (STP) capabilities of services
- Work in an Agile / DevOps environment with a focus on continuous delivery
Requirements:
- Strong experience with Java (11+), ideally Java 17+
- Hands-on experience with Kubernetes
- Experience with Git and version control workflows
- Good command of Unix/Linux environments and CLI tools
- Solid understanding of SQL and databases (Oracle preferred)
- Experience in building and integrating RESTful APIs and microservices
- Frontend knowledge (JavaScript / React preferable)
- Experience working in Agile / DevOps teams
- Strong analytical and problem-solving skills
- Good communication skills and English proficiency (B2+)
What We Offer:
- Long-term cooperation on an enterprise-scale international project
- Opportunity to work on modernizing large-scale payment systems
- Real impact on system transformation and engineering practices
- 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/candidates
Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland
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Kraków, Poland
30,000 - 38,500 PLN/hr
🏢 Summary: B2B role for a Kotlin/Java Developer on an international financial project focused on building an internal engineering platform supporting development standards, quality and compliance. The position involves developing modern web applications and APIs in a microservices architecture, contributing within an Agile and CI/CD-driven environment. 🗂️ Requirements: Commercial experience with Kotlin or Java and willingness to work with Kotlin, Hands-on experience in at least two areas: API development, SQL/databases, HTML/JavaScript, Experience with Jira, Confluence and Bitbucket, Understanding of microservices architecture, English proficiency at B2+ level 📃 Skills: Kotlin, Java, API, SQL, HTML, JavaScript, Microservices, Jira, Confluence, Bitbucket, CI/CD, Jenkins, AWS, Azure, GCP, Linux, AIX, WAS 🏢 Description: 📍 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/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland
Technology
Antal Sp. z o.o.
Kotlin / Java Developer
Mid
Hybrid
Krakow, Poland
30,000 - 38,000 PLN/hr
🏢 Summary: B2B opportunity for a Kotlin/Java Developer to build and enhance an internal engineering platform for a large financial services organization. The role focuses on developing modern web applications and APIs within a microservices architecture in an Agile, CI/CD-driven environment. It involves backend development, selected UI work, and close collaboration with cross-functional teams. 🗂️ Requirements: Commercial experience with Kotlin or Java, Hands-on experience in at least two: API development, SQL/databases, HTML/JavaScript, Understanding of microservices architecture, Experience with Jira, Confluence, Bitbucket, Ability to work in Agile and CI/CD environment, English proficiency at B2+ level 📃 Skills: Kotlin, Java, SQL, HTML, JavaScript, Microservices, Jira, Confluence, Bitbucket, Jenkins, AWS, Azure, GCP, Linux, AIX, WAS, CI/CD 🏢 Description: 📍 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.