Senior Java Fullstack Developer

🏢 Summary: Full-stack Developer role in the banking industry focused on developing and maintaining microservices and integrating applications with a Cards platform. The position involves building scalable full-stack solutions using Java, Angular, REST APIs, Kafka, and cloud-native technologies in a hybrid work model. Candidates should have strong backend and frontend experience, knowledge of microservices architecture, and familiarity with DevOps and Agile practices. 🗂️ Requirements: Minimum 2 years of front-end experience, At least 5 years of Java development experience, Experience with microservices architecture, Knowledge of event sourcing architecture patterns, Hands-on experience with Angular, Hands-on experience with Spring Framework, Hands-on experience with Docker, Hands-on experience with Kubernetes, Hands-on experience with REST APIs, Hands-on experience with Kafka, Hands-on experience with MQ, Hands-on experience with SQL, Familiarity with Jenkins, Familiarity with ArgoCD, Understanding of XML, Understanding of JSON, Understanding of Avro, Experience with Git, English proficiency at B2 level, Experience working in Agile/Scrum environments 📃 Skills: Java, Angular, Spring, Docker, Kubernetes, REST, Kafka, MQ, SQL, Jenkins, ArgoCD, XML, JSON, Avro, Git 🏢 Description: Industry: banking Location: Hybrid - 3 days per week form office in Gdańsk, Gdynia, Warsaw or Łódź Rate: up to 165 pln/h on b2b Overview We are seeking a Full-stack Developer who will be instrumental in the development and maintenance of microservices. The role requires a combination of technical skills and collaboration with various stakeholders to achieve optimal solutions. Main Responsibilities Design and develop a full-stack application. Integrate existing applications with the Cards target platform. Implement translation/routing mechanisms from old to new systems. Develop microservices using Angular, REST APIs, and integrate with KAFKA/MQ/Oracle DB. Ensure application quality and responsiveness. Collaborate with internal and external stakeholders. Key Requirements Minimum 2 years of front-end experience. At least 5 years of Java Software Development experience. Practical knowledge of event sourcing architecture patterns and microservices architecture. Hands-on experience with Angular, Spring Framework, Docker, Kubernetes, REST, Kafka, MQ, SQL. Familiarity with DevOps tools such as Jenkins and Argo CD. Understanding of data standards, including XML, JSON, Avro. Experience with Kafka streaming platform. Version control tools like GIT. Proficiency in English (minimum B2 level). Experience with Agile/Scrum methodologies. Nice to Have Building distributed, highly scalable and high throughput applications.

🏢 Summary: Full-stack Developer role focused on building and maintaining microservices and integrating applications within a banking environment. The position involves developing full-stack solutions using Java and Angular, working with event-driven architectures, and collaborating with stakeholders in a hybrid work model. The offer includes B2B cooperation with a rate up to 165 PLN/h. 🗂️ Requirements: Minimum 2 years of front-end experience, At least 5 years of Java development experience, Experience with event sourcing and microservices architecture, Hands-on experience with Angular, Hands-on experience with Spring Framework, Hands-on experience with Docker, Hands-on experience with Kubernetes, Hands-on experience with REST APIs, Hands-on experience with Kafka, Hands-on experience with MQ, Hands-on experience with SQL, Familiarity with Jenkins, Familiarity with ArgoCD, Understanding of XML, Understanding of JSON, Understanding of Avro, Experience with Git, English proficiency at B2 level or higher, Experience with Agile/Scrum 📃 Skills: Java, Angular, Spring, Docker, Kubernetes, REST, Kafka, MQ, Oracle, SQL, Jenkins, ArgoCD, XML, JSON, Avro, Git 🏢 Description: Industry: banking Location: Hybrid - 3 days per week form office in Gdańsk, Gdynia, Warsaw or Łódź Rate: up to 165 pln/h on b2b Overview We are seeking a Full-stack Developer who will be instrumental in the development and maintenance of microservices. The role requires a combination of technical skills and collaboration with various stakeholders to achieve optimal solutions. Main Responsibilities Design and develop a full-stack application. Integrate existing applications with the Cards target platform. Implement translation/routing mechanisms from old to new systems. Develop microservices using Angular, REST APIs, and integrate with KAFKA/MQ/Oracle DB. Ensure application quality and responsiveness. Collaborate with internal and external stakeholders. Key Requirements Minimum 2 years of front-end experience. At least 5 years of Java Software Development experience. Practical knowledge of event sourcing architecture patterns and microservices architecture. Hands-on experience with Angular, Spring Framework, Docker, Kubernetes, REST, Kafka, MQ, SQL. Familiarity with DevOps tools such as Jenkins and Argo CD. Understanding of data standards, including XML, JSON, Avro. Experience with Kafka streaming platform. Version control tools like GIT. Proficiency in English (minimum B2 level). Experience with Agile/Scrum methodologies. Nice to Have Building distributed, highly scalable and high throughput applications.

🏢 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 Fullstack Developer role focused on modernizing a banking Corporate Netbank Administration system through REST API development and microservices extraction. The position involves refactoring legacy applications and enhancing integrations to improve customer experience. Work is delivered in hybrid model with strong emphasis on Java and modern frameworks. 🗂️ Requirements: Minimum 6 years of hands-on Java development experience, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST APIs, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) The Senior Fullstack Developer role is focused on modernizing the Corporate Netbank Administration (CNA) system, improving the customer experience through API development, and ensuring seamless integration across various services. The position requires strong expertise in Java development and solid experience with modern frameworks. RESPONSIBILITIES: Building REST API solutions and integrations with other applications. Refactoring legacy applications by extracting business logic into microservices. Collaborating with other developers, teams, and stakeholders to deliver optimal solutions. Participating in the development and continuous improvement of services in both microservice and monolith architectures. REQUIREMENTS: Hands-on experience in Java development (preferably at least 6 years). Familiarity with reactive programming . Working knowledge of Spring and Hibernate frameworks. Experience with SQL , REST , Microservices , and Git . At least 2 years of experience with Angular . NICE TO HAVE: Familiarity with the DDD (Domain-Driven Design) approach. Experience with the Cucumber framework. Previous experience working in an international team with English as the common language. Exposure to SAFe Agile methodologies.

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves refactoring legacy applications and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract. 🗂️ Requirements: Minimum 6 years of experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST API development, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive, DDD, Cucumber, SAFe 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves enhancing customer-facing services and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract up to 170 PLN/h. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience building REST APIs, Experience with microservices architecture, Experience with GIT, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, GIT, Angular, Cucumber, DDD 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior Java Full-Stack Developer role for international projects, focused on end-to-end development of web applications in a cloud-based environment. The position involves backend and frontend development, design and testing activities, and collaboration within agile teams. It is a fully remote B2B contract with long-term cooperation. 🗂️ Requirements: Bachelor’s degree in Engineering, IT, Science, or related technical field, Minimum 5 years of commercial experience in corporate IT, Strong experience with Java and Java frameworks, Commercial experience with frontend technologies, Solid knowledge of JavaScript, HTML5, CSS3, Experience with Angular, Knowledge of databases and SQL, Experience with REST and SOAP web services, Experience with AWS or Azure, Knowledge of Clean Code principles, Experience with unit testing, Experience with source code management, Experience with CI/CD and automated deployments, Very good English (spoken and written), Experience in agile (Scrum) environments 📃 Skills: Java, Spring, JavaScript, HTML5, CSS3, Angular, SQL, REST, SOAP, AWS, Azure, CI/CD, Git, Scrum 🏢 Description: Senior Java Full-Stack Developer – Remote Contract type: B2B Hourly rate: 160–170 PLN/h Location: Remote We are looking for an experienced Senior Java Full-Stack Developer to join international implementation projects. The role involves end-to-end development of web applications, close collaboration with agile teams, and active participation in design and testing activities. The position is well suited for a developer who values clean code, quality, and teamwork in a cloud-based environment. Responsibilities Work as a Senior Java Full-Stack Developer across multiple implementation streams Develop and maintain web-based applications using Java and modern frontend technologies Write and maintain unit tests to ensure software quality Collaborate with agile team members to achieve project and client goals Participate in design reviews, testing activities, and technical discussions Requirements Bachelor’s degree in Engineering, IT, Science, or another technical field Minimum 5 years of commercial experience in a corporate IT environment Strong experience with Java and commonly used Java frameworks Commercial experience with frontend technologies and web-based applications Solid knowledge of JavaScript, HTML5, CSS3, and responsive single-page application design Experience with Angular Knowledge of databases and SQL Experience with web services and APIs (REST, SOAP) Experience deploying applications on cloud platforms such as AWS or Azure Knowledge of Clean Code principles and unit testing Experience with source code management, CI/CD, and automated deployments Very good English, both spoken and written Experience working in international and agile (Scrum) environments Strong communication and collaboration skills Nice to have Experience with Kafka or RabbitMQ Hands-on experience with microservices architecture Knowledge of Docker and Kubernetes Relevant certifications (Java, Spring, SQL, AWS, Azure) Knowledge of German or another European language Benefits Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance We offer Fully remote cooperation Competitive hourly rate: 160–170 PLN/h (B2B) Long-term cooperation in international projects Modern technology stack and agile working environment

🏢 Summary: Senior Java Developer role focused on building and maintaining backend microservices in the Credit Data Sourcing domain within a banking environment. The position involves designing data flows, system integrations, and scalable business logic, as well as supporting production incidents. Work is performed in an Agile team with hybrid presence in Poland. 🗂️ Requirements: Strong experience with Java and backend development, Experience designing and maintaining microservices, Experience with data flows and data sourcing systems, Experience in integration-heavy environments, Ability to analyze end-to-end data flow across systems, Ability to assess impact on upstream and downstream systems, Experience working with distributed systems, Experience in incident analysis and troubleshooting, Understanding of financial or credit domain systems 📃 Skills: Java, Microservices, Dataflows, Integrations, Distributed, Banking, Credit, Agile, Scrum, Troubleshooting 🏢 Description: OFFER DETAILS: Industry: Banking Location: Warsaw / Gdańsk / Łódź Work model: Hybrid – 3 days per week in the office required Rate: up to 160 PLN/hour net + VAT Contract type: B2B Overview: The Senior Java Developer role focuses on the development and maintenance of backend services in the Credit Data Sourcing domain. This position requires strong involvement in data flows, integrations, and business logic, along with close collaboration with Business Analysts, Product Owners, and other stakeholders. The role also includes participating in production support and incident resolution. Main Responsibilities: Design, develop, and maintain Java-based microservices. Implement and optimize data flows and integrations between systems. Collaborate with analysts on user stories, acceptance criteria, and solution design. Translate business requirements into scalable technical solutions. Support incident analysis and troubleshooting including logs and root cause analysis. Contribute to refinement sessions and technical design discussions. Ensure high-quality code, testing, and performance. Key Requirements: Experience in data flows and data sourcing systems. Experience in integration-heavy environments. Ability to understand end-to-end data flow across systems. Ability to analyze impact of changes on upstream/downstream systems. Experience in the financial/credit domain is advantageous. Strong analytical and problem-solving skills. Good communication with both technical and business stakeholders. Ownership mindset and responsibility for delivery. Comfortable working in complex, distributed systems. Nice to Have: Experience with frontend frameworks like Angular or React. Experience in credit risk and banking systems. Experience with event-driven architectures. Performance tuning in data-heavy systems. Other Details: This position is based in Poland, specifically in Gdańsk, Warsaw, or Łódź. The role operates within an Agile/Scrum team environment, emphasizing close collaboration and regular alignment around releases. Ideal candidates will thrive in a dynamic, interdisciplinary setting.