Backend Java Developer (banking)

🏢 Summary: Contract role in banking focused on modernizing a legacy corporate banking system into a new digital platform. The position involves developing new features, building and maintaining APIs, and working within a SAFe Agile team to improve customer experience and operational efficiency. Hybrid work model with competitive B2B rate. 🗂️ Requirements: Minimum 6 years of hands-on Java development experience, Experience in building API solutions, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Working knowledge of Cucumber, Proficiency in SQL, Experience with REST services, Experience with Microservices architecture, Proficiency with Git, Understanding of SOLID principles, Knowledge of design patterns, Experience working in SAFe Agile environment 📃 Skills: Java, Spring, Hibernate, Cucumber, SQL, REST, Microservices, Git, SOLID, DesignPatterns, SAFe, Reactive 🏢 Description: Industry: Banking Rate: up to 160 pln/h on b2b Location: Hybrid form Warsaw, Gdańsk or Gdynia (3 days per week from office) Summary: The main purpose of this role is to be part of a team responsible for the modernization of banking software, specifically transitioning from a legacy system to a new digital platform for corporate clients. This initiative aims to enhance customer service and improve operational efficiency. Responsibilities: Develop new features and improvements for the corporate banking platform. Collaborate with developers, product owners, architects, analysts, and QA teams. Build and maintain APIs for enhanced customer experience. Ensure compliance with banking services and maintenance requirements. Participate in agile ceremonies and follow SAFE Agile principles. Key Requirements: Minimum 6 years of hands-on experience in Java development. Experience in building API solutions. Familiarity with reactive programming methodologies. Working knowledge of Spring, Hibernate, and Cucumber framework. Proficiency with SQL, REST, Microservices, and GIT. Understanding of SOLID principles and design patterns. Fluency in English. Nice to Have: 2 years experience with Angular. Ability to conduct unit tests using Jasmine.

🏢 Summary: The role involves modernizing corporate banking software by migrating from a legacy system to a new digital platform. The position focuses on developing new features, building and maintaining APIs, and ensuring compliance within a banking environment. The work is delivered in a hybrid model within an agile team following SAFe principles. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Experience in building and maintaining APIs, Experience with reactive programming, Working knowledge of Spring, Working knowledge of Hibernate, Working knowledge of Cucumber, Proficiency in SQL, Proficiency in REST, Experience with Microservices architecture, Proficiency in GIT, Understanding of SOLID principles, Knowledge of design patterns, Fluency in English 📃 Skills: Java, Spring, Hibernate, Cucumber, SQL, REST, Microservices, GIT, Reactive, SOLID, Angular, Jasmine 🏢 Description: Industry: Banking Rate: up to 160 pln/h on b2b Location: Hybrid form Warsaw, Gdańsk or Gdynia (3 days per week from office) Summary: The main purpose of this role is to be part of a team responsible for the modernization of banking software, specifically transitioning from a legacy system to a new digital platform for corporate clients. This initiative aims to enhance customer service and improve operational efficiency. Responsibilities: Develop new features and improvements for the corporate banking platform. Collaborate with developers, product owners, architects, analysts, and QA teams. Build and maintain APIs for enhanced customer experience. Ensure compliance with banking services and maintenance requirements. Participate in agile ceremonies and follow SAFE Agile principles. Key Requirements: Minimum 6 years of hands-on experience in Java development. Experience in building API solutions. Familiarity with reactive programming methodologies. Working knowledge of Spring, Hibernate, and Cucumber framework. Proficiency with SQL, REST, Microservices, and GIT. Understanding of SOLID principles and design patterns. Fluency in English. Nice to Have: 2 years experience with Angular. Ability to conduct unit tests using Jasmine.

🏢 Summary: Hybrid Java Developer role in the banking sector focused on building and integrating data flows for Financial Crime Prevention systems. The position involves developing microservices-based solutions using Spring Boot, maintaining existing code, and collaborating on DevOps-driven delivery processes. Candidates will work with modern data, messaging, and containerization technologies in a cross-functional environment. 🗂️ Requirements: Proficiency in DevOps methodology, Strong knowledge of Java, Experience with Spring Boot and microservices, Experience with PostgreSQL, Experience with DataStage (ETL), Strong SQL knowledge, Familiarity with Kubernetes, Familiarity with Bitbucket, Familiarity with Jenkins, Understanding of Kafka 📃 Skills: Java, Spring, SpringBoot, Microservices, PostgreSQL, SQL, DataStage, Kubernetes, Bitbucket, Jenkins, Kafka, Maven, Liquibase, JOLT 🏢 Description: Industries: Banking Location: Hybrid - 3 per week from Gdańsk or Gdynia Rate: 165 pln/h Introduction & Summary We are seeking experienced Java Developers to contribute to the integration and process data flows within the Financial Crime Prevention area. The ideal candidates should possess robust expertise in Java, particularly with the Spring Boot framework, alongside a solid understanding of DevOps practices and relevant database technologies. Main Responsibilities The Java Developers will be tasked with: Implementing functionalities related to financial crime prevention. Collaborating with cross-functional teams to enhance data integration. Maintaining and improving existing codebases. Documenting processes and contributing to technical specifications. Participating in code reviews and ensuring code quality. Key Requirements Proficiency in the DevOps methodology. Strong knowledge of Java, especially with Spring Boot framework and microservices. Experience with Postgres DB, DataStage (ETL), and SQL. Familiarity with Kubernetes, Bitbucket, and Jenkins. Understanding of Kafka and its applications. Able to work effectively in a team environment. Excellent interpersonal and communication skills. Technologies: Java 21, Kubernetes, Kafka, Maven, PostgreSQL, Spring Boot, Liquibase, and JOLT. Nice to Have Experience with Apache Camel. Familiarity with Oracle SOA Suite. Knowledge of SCRUM methodologies. Understanding of CDC concepts, particularly Debezium.

🏢 Summary: Hybrid Java Developer role in the banking sector focused on building and integrating data flows within the Financial Crime Prevention area. The position involves developing microservices-based solutions, enhancing existing systems, and supporting data integration using modern DevOps practices. The role requires strong backend expertise and experience with distributed systems and databases. 🗂️ Requirements: Proficiency in DevOps methodology, Strong knowledge of Java, Experience with Spring Boot, Experience with microservices architecture, Experience with PostgreSQL, Experience with SQL, Experience with DataStage (ETL), Familiarity with Kubernetes, Familiarity with Bitbucket, Familiarity with Jenkins, Understanding of Kafka 📃 Skills: Java, Spring, SpringBoot, Microservices, PostgreSQL, SQL, DataStage, Kubernetes, Bitbucket, Jenkins, Kafka, Maven, Liquibase, JOLT 🏢 Description: Industries: Banking Location: Hybrid - 3 per week from Gdańsk or Gdynia Rate: 165 pln/h Introduction & Summary We are seeking experienced Java Developers to contribute to the integration and process data flows within the Financial Crime Prevention area. The ideal candidates should possess robust expertise in Java, particularly with the Spring Boot framework, alongside a solid understanding of DevOps practices and relevant database technologies. Main Responsibilities The Java Developers will be tasked with: Implementing functionalities related to financial crime prevention. Collaborating with cross-functional teams to enhance data integration. Maintaining and improving existing codebases. Documenting processes and contributing to technical specifications. Participating in code reviews and ensuring code quality. Key Requirements Proficiency in the DevOps methodology. Strong knowledge of Java, especially with Spring Boot framework and microservices. Experience with Postgres DB, DataStage (ETL), and SQL. Familiarity with Kubernetes, Bitbucket, and Jenkins. Understanding of Kafka and its applications. Able to work effectively in a team environment. Excellent interpersonal and communication skills. Technologies: Java 21, Kubernetes, Kafka, Maven, PostgreSQL, Spring Boot, Liquibase, and JOLT. Nice to Have Experience with Apache Camel. Familiarity with Oracle SOA Suite. Knowledge of SCRUM methodologies. Understanding of CDC concepts, particularly Debezium.

🏢 Summary: B2B opportunity for an experienced Java Developer to build a greenfield loan system (STP) in the banking sector. The role focuses on developing a robust Spring Boot–based platform, integrating via REST and Kafka, and shaping architecture and technical decisions in an Agile environment. Hybrid work model with regular collaboration in Gdańsk. 🗂️ Requirements: 8+ years of commercial experience with Java (version 21+), 8+ years of experience with Spring Boot, 8+ years of experience with JPA, Proficiency with Maven, Experience with Liquibase for database versioning, Experience with REST API integration, Experience with Kafka event streaming, Professional working proficiency in English 📃 Skills: Java, SpringBoot, JPA, Maven, Liquibase, Kafka, REST, Cucumber 🏢 Description: General info: - Industry: banking - Work model: hybrid (min. 2 days in office in Gdańsk) - Rate: 140-160/h net + vat B2B We are seeking experienced Java Developers to join our innovative project, called STP, focusing on a loan system. This exciting greenfield initiative allows you to shape a system from the ground up, supported by a dedicated and engaged business team. Main Responsibilities: Develop and maintain a robust Java platform using Spring Boot Integrate with surrounding systems through REST APIs and Kafka-based event streaming Ensure clean architecture, maintainable code, and clear ownership Utilize AI-assisted development tools to enhance productivity Collaborate closely with Business SMEs and the Product Owner Work in an Agile environment, promoting high levels of collaboration and continuous improvement Participate in solution design and influence technical decisions Key Requirements: Java 21+, with 8+ years of experience Spring Boot, with 8+ years of experience JPA, with 8+ years of experience Maven proficiency Liquibase for database change versioning Nice to Have: Cucumber for testing Other Details: This role is based in Gdańsk, Poland, and requires collaboration in English. Expect a dynamic Agile setup with an emphasis on shared understanding and collaborative solution design.

🏢 Summary: Senior Java Developer role focused on building and integrating enterprise financial applications within a high-impact reporting platform, working in a hybrid model in Warsaw. The position involves developing scalable Java-based services, optimizing system performance, and contributing to digital transformation initiatives in an Agile environment. 🗂️ Requirements: Minimum 5 years of professional experience in Java development for enterprise applications, Advanced knowledge of Java, Spring, Spring Boot, Hibernate, JPA, REST APIs, Experience with Oracle databases and SQL, Experience with DevOps practices, Familiarity with SOAP services, Experience working in Agile methodologies, Knowledge of Maven and RabbitMQ, Communicative level of Polish, Good command of English (B2 level), Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, REST, SOAP, Oracle, SQL, Maven, RabbitMQ, Agile, DevOps 🏢 Description: Empower scalable financial solutions — drive innovation in enterprise applications! Warszawa-based opportunity with 100% remote work model. As a Senior Java Developer , you will be working for our client, a leading provider of financial reporting and corporate application services. You’ll contribute to the development and integration of innovative services within a high-impact platform used for financial statements and operational metrics, supporting complex decision-making processes. This role offers a unique chance to work at the forefront of digital transformation and deepen your technical expertise in a vibrant, evolving environment. Your main responsibilities: Develop, maintain, and optimize enterprise-level Java applications with advanced knowledge of Spring, Hibernate, JPA, and RESTful APIs. Integrate services with the Bali group application, ensuring seamless data flow and system reliability. Collaborate in an Agile environment, contributing to system analysis, testing, and continuous improvement initiatives. Implement DevOps practices and utilize Oracle databases to enhance system performance and scalability. Support the development of new features and functions aligned with client requirements and industry standards. Write comprehensive unit tests to ensure code quality and maintainability. Engage in system analysis and troubleshooting, delivering timely resolutions. Work closely with cross-functional teams, including product owners and QA, to ensure successful project delivery. You're ideal for this role if you have: At least 5 years of professional experience in Java development, focused on enterprise applications. Advanced proficiency in Java, Spring, Boot, Hibernate, JPA, and REST APIs. Experience working with Oracle databases, both SQL and data management tools. Familiarity with DevOps practices and SOAP services. Strong understanding of Agile methodologies and experience with tools like Maven and RabbitMQ. Good command of English (B2 level). It is a strong plus if you have: (optional) Knowledge of PostgreSQL and additional experience with system analysis techniques. Certification in Scrum or related Agile frameworks. Language Required for the role: Polish (Communicative level). Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Full Stack Java Developer role focused on enhancing and modernizing legacy Java systems to support ISO 20022, while developing and maintaining backend services in a distributed, event-driven environment. The position involves full lifecycle development, from requirements analysis to production releases, in a hybrid work model in Warsaw. 🗂️ Requirements: 4+ years of experience as Java or Full Stack Developer, Strong experience with Java and Spring ecosystem, Hands-on experience with Hibernate and DB2, Experience with Apache Kafka and event-driven architectures, Experience with MongoDB, Experience building RESTful APIs and microservices, Experience with Maven multi-module builds, Experience with Docker, Experience with Git and CI/CD pipelines, Experience working with distributed systems and legacy codebases 📃 Skills: Java, Spring, SpringBoot, SpringData, SpringSecurity, Hibernate, DB2, Kafka, KafkaStreams, KafkaConnect, MongoDB, REST, Microservices, Maven, Docker, Git, GitLab, CICD, ISO20022 🏢 Description: For our Client we are looking for a Full Stack Java Developer. Warsaw, hybrid (4 days per week from the office) B2B: 28,000–35,000 PLN per month Key Responsibilities Gather and analyse requirements with business stakeholders Design, plan, implement and test changes with the engineering team Adapt and enhance legacy Java applications for ISO 20022 changes Develop and maintain backend services and integrations Participate in code reviews, UAT support and production releases Continuously improve code quality and system design Requirements 4+ years of experience as a Java / Full Stack Developer Strong hands-on experience with: Java, Spring, Spring Boot (DI, Spring Data, Spring Security) Hibernate, DB2 Apache Kafka (producers, consumers, Kafka Streams, Kafka Connect) MongoDB (document modelling, Spring Data MongoDB) RESTful APIs, microservices, event‑driven architectures Maven (multi-module builds) Docker Git & CI/CD (GitLab CI preferred) Experience working in distributed systems and complex legacy codebases Strong analytical skills and ability to understand complex business logic Good communication skills and ability to work in a global team

🏢 Summary: Full Stack Java Developer role focused on enhancing and maintaining legacy Java systems in line with ISO 20022 standards while building and supporting modern backend services and integrations. The position involves working on microservices and event-driven architectures within a distributed environment, contributing to the full development lifecycle from requirements analysis to production releases. 🗂️ Requirements: 4+ years experience as Java or Full Stack Developer, Strong hands-on experience with Java, Strong hands-on experience with Spring and Spring Boot, Experience with Hibernate and DB2, Experience with Apache Kafka, Experience with MongoDB, Experience building RESTful APIs and microservices, Experience with event-driven architectures, Experience with Maven multi-module builds, Experience with Docker, Experience with Git and CI/CD pipelines, Experience working with distributed systems, Experience working with complex legacy codebases 📃 Skills: Java, Spring, SpringBoot, Hibernate, DB2, Kafka, MongoDB, REST, Microservices, Maven, Docker, Git, GitLab, CI/CD 🏢 Description: For our Client we are looking for a Full Stack Java Developer. Warsaw, hybrid (4 days per week from the office) B2B: 28,000–35,000 PLN per month Key Responsibilities Gather and analyse requirements with business stakeholders Design, plan, implement and test changes with the engineering team Adapt and enhance legacy Java applications for ISO 20022 changes Develop and maintain backend services and integrations Participate in code reviews, UAT support and production releases Continuously improve code quality and system design Requirements 4+ years of experience as a Java / Full Stack Developer Strong hands-on experience with: Java, Spring, Spring Boot (DI, Spring Data, Spring Security) Hibernate, DB2 Apache Kafka (producers, consumers, Kafka Streams, Kafka Connect) MongoDB (document modelling, Spring Data MongoDB) RESTful APIs, microservices, event‑driven architectures Maven (multi-module builds) Docker Git & CI/CD (GitLab CI preferred) Experience working in distributed systems and complex legacy codebases Strong analytical skills and ability to understand complex business logic Good communication skills and ability to work in a global team

🏢 Summary: B2B Full Stack Java Developer role in Warsaw (hybrid) focused on enhancing legacy Java systems for ISO 20022 compliance and building backend services and integrations. The position involves designing, implementing and testing changes in distributed, event‑driven architectures while collaborating with business stakeholders and global teams. Emphasis is placed on code quality, system design and production support. 🗂️ Requirements: 4+ years experience as Java or Full Stack Developer, Strong hands-on experience with Java, Strong hands-on experience with Spring and Spring Boot, Experience with Hibernate and DB2, Experience with Apache Kafka, Experience with MongoDB, Experience building RESTful APIs and microservices, Experience with event-driven architectures, Experience with Maven multi-module builds, Experience with Docker, Experience with Git and CI/CD, Experience working with distributed systems, Experience working with complex legacy codebases 📃 Skills: Java, Spring, SpringBoot, Hibernate, DB2, Kafka, MongoDB, REST, Microservices, Maven, Docker, Git, GitLab, CI/CD 🏢 Description: For our Client we are looking for a Full Stack Java Developer. Warsaw, hybrid (4 days per week from the office) B2B: 28,000–32,000 PLN per month Your responsibilities Gather and analyse requirements with business stakeholders Design, plan, implement and test changes with the engineering team Adapt and enhance legacy Java applications for ISO 20022 changes Develop and maintain backend services and integrations Participate in code reviews, UAT support and production releases Continuously improve code quality and system design Requirements: 4+ years of experience as a Java / Full Stack Developer Strong hands-on experience with: Java, Spring, Spring Boot (DI, Spring Data, Spring Security) Hibernate, DB2 Apache Kafka (producers, consumers, Kafka Streams, Kafka Connect) MongoDB (document modelling, Spring Data MongoDB) RESTful APIs, microservices, event‑driven architectures Maven (multi-module builds) Docker Git & CI/CD (GitLab CI preferred) Experience working in distributed systems and complex legacy codebases Strong analytical skills and ability to understand complex business logic Good communication skills and ability to work in a global team

🏢 Summary: Senior Java Developer role focused on developing and modernizing Java-based backend systems for pension and savings products within a financial environment. The position involves upgrading applications to Java 17+ and Spring Boot 3, building scalable and compliant financial solutions, and implementing complex integrations and calculation engines. Work includes full SDLC participation in an international, hybrid setting. 🗂️ Requirements: Strong proficiency in Java, Experience with Spring framework, Experience with Hibernate, Experience with relational databases, Advanced SQL knowledge, Experience with PostgreSQL, Experience with OpenAPI, Experience with AsyncAPI, Experience with Git, Experience with CI/CD pipelines, Knowledge of software design patterns, Understanding of object-oriented programming, Experience upgrading to Java 17+, Experience with Spring Boot 3.x 📃 Skills: Java, Spring, SpringBoot, Hibernate, PostgreSQL, SQL, OpenAPI, AsyncAPI, Git, CICD, JMS, MQ 🏢 Description: Salary: 1100-1300 PLN/day on B2B Work model: hybrid from 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 during regular integration meetings Project The project focuses on the development and enhancement of Java-based backend applications supporting pension and savings products. The Senior Java Developer will be responsible for building and improving solutions related to taxation, account management, and investment processing . The role involves working on scalable, secure financial systems that ensure high reliability and regulatory compliance. Responsibilities you'll have Support the upgrade of existing applications to Java 17 (at least) and Spring Boot 3.3.x, contributing experience from similar modernization initiatives Design, develop, and maintain high-quality Java applications supporting savings and investment products Build robust calculation engines that ensure compliance with current tax regulations across multiple countries Implement solutions for complex business processes, including integrations with tax authorities and generation of customer-facing reports Participate in the full software development lifecycle including requirements analysis, design, coding, testing, and deployment Collaborate with financial analysts to translate requirements into technical solutions Expected competences and knowledge Strong proficiency in Java and related frameworks (Spring, Hibernate, etc.) Experience with relational databases and SQL (PostgreSQL, etc.) Knowledge of OpenAPI and AsyncAPI for producing and consuming data Familiarity with version control systems (Git) and CI/CD pipelines Understanding of software design patterns and object-oriented programming principles Technologies you'll work with Java 17, 21 Spring Boot Hibernate Postgres SQL Messaging protocols (e.g. JMS, MQ) SQL 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.