Senior 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: Long-term B2B role in the banking sector focused on developing and modernizing a global payment platform using Java and React. The position involves building and migrating services to microservices architecture, supporting DevOps practices, and improving automation and processing efficiency in a hybrid work model. 🗂️ Requirements: Strong expertise in Java 17+, Experience with Kubernetes, Knowledge of Git, Proficiency in Unix-based systems and CLI, Experience with SQL and databases, Understanding of RESTful microservices and APIs, Knowledge of HTTP, Experience with JavaScript and React, Experience in DevOps delivery team, Knowledge of Spring or Spring Boot 📃 Skills: Java, React, Kubernetes, Git, Unix, SQL, Oracle, REST, HTTP, JavaScript, Spring, SpringBoot, Microservices, APIs, DevOps 🏢 Description: Project information: Industry: banking Location & Hybrid Model Kraków – 5-6 days per month onsite (Kraków office) Warsaw – 5-6 days per month onsite (Warsaw office) Outside Kraków/Warsaw – 3 days per month from the Warsaw or Kraków office Rate: We’re open to your suggestions Contract : B2B, no end date, long-term cooperation Summary: We are looking for skilled individuals for the payment platform, which allows our customers and clients to move funds across the globe, pay their suppliers, credit salaries, pay taxes directly to authorities and transfer money via multiple channels. The purpose of the role is to support project delivery through high-quality analysis and Agile design artefacts, effective stakeholder management, and deep business insight for the solution delivery team, all enabled by appropriate tools and aligned with DevOps working practices. Responsibilities: Building and supporting services, microservices, and applications (back-end and front-end) in Java 11/17/21, ReactJS, while maintaining and preserving standard products. Reduce costs and complexity by migrating from mainframe and IBM WebSphere to a modern approach with an integration layer such as APIs or microservices patterns. Reduce testing costs by adopting automated testing frameworks. Increasing Straight-Trough-Processing (STP) capabilities of services. Requirements: Strong expertise in Java 17+ is a must Kubernetes & Git knowledge Fluency in navigating Unix-based systems and command-line interfaces is essential. Database technologies and SQL - Oracle preferred (nice-to-have) A working understanding of RESTful microservices and APIs HTTP Web technologies and JavaScript - React Having worked in a DevOps delivery team A desirable understanding of application monitoring. Knowledge of Spring/Spring Boot

🏢 Summary: Senior Full Stack Developer role focused on modernizing a large-scale corporate banking platform through legacy transformation into a modern API-driven and microservices-based architecture. The position involves backend development with Java and Spring, frontend work with Angular, enterprise integrations, and collaboration within an international Agile team. The offer includes a long-term high-impact project with complex engineering challenges and modern architecture practices. 🗂️ Requirements: Professional experience with Java, Commercial experience with Angular, Experience with Spring Framework, Experience with Spring Boot, Experience with Hibernate, Experience designing REST APIs, Knowledge of Microservices Architecture, Good SQL knowledge, Experience with Jasmine, Familiarity with Git, English communication skills, Experience working in Agile environments 📃 Skills: Java, Angular, Spring, SpringBoot, Hibernate, REST, Microservices, SQL, Jasmine, Git, JUnit, Cucumber, WebFlux, Reactor, DDD 🏢 Description: Join a long-term digital transformation project! We are looking for an experienced Senior Full Stack Developer to join an international team working on the modernization of a large-scale corporate banking platform. This is an excellent opportunity to contribute to the transformation of a legacy system into a modern, API-driven architecture while collaborating with highly skilled professionals in an Agile environment. Location Hybrid model (3 days per week in the office) Office locations: Warsaw (preferred) Gdańsk Gdynia Your responsibilities Design, develop, and maintain REST APIs using Java and Spring Build and enhance backend services based on microservices and monolithic architecture Participate in a large-scale legacy modernization initiative Develop integrations between multiple enterprise systems Contribute to frontend development using Angular Write and maintain unit tests (JUnit & Jasmine) Support BDD testing using Cucumber Perform code reviews and ensure high code quality Work with SQL databases, including query optimization and schema design Collaborate closely with developers, architects, business stakeholders, and QA teams Participate in Agile ceremonies (SAFe framework) Prepare technical documentation for APIs and solutions Required skills Strong commercial experience with Java Experience with Angular Hands-on knowledge of Spring Framework / Spring Boot / Hibernate Experience designing and developing REST APIs Solid understanding of Microservices Architecture Good knowledge of SQL Experience with Jasmine Familiarity with Git Nice to have Experience with Reactive Programming (WebFlux, Project Reactor) Knowledge of Domain-Driven Design (DDD) Experience with Hexagonal (Ports & Adapters) Architecture Experience with Cucumber / BDD Knowledge of SOLID principles and design patterns What you'll work on Modernizing a mission-critical enterprise platform Building modern APIs for corporate banking services Refactoring business logic from a monolithic application into microservices Working in an international team using English as the primary communication language Delivering solutions within a SAFe Agile environment What we offer Long-term project with high business impact Opportunity to work on large-scale system modernization rather than pure maintenance Challenging technical environment focused on modern architecture and best engineering practices International, collaborative team Professional growth through complex engineering challenges Requirements Professional experience developing enterprise applications with Java Experience working with Angular in commercial projects Strong communication skills in English Ability to work effectively in an Agile environment

🏢 Summary: Development and modernization of enterprise banking systems used by millions of customers, focused on large-scale architectural initiatives. The role involves implementing and enhancing Java-based applications and services with strong emphasis on quality, performance, and reliability. Responsibilities include testing, technical analysis, and participation in complex technology projects. 🗂️ Requirements: Minimum 5 years commercial experience in Java, Experience with Java 11 or higher, Knowledge of Spring Boot or Spring Integration, Knowledge of Hibernate, Knowledge of relational databases, Experience with Git, Experience with Maven, Experience with Jira, Experience with Jenkins, Knowledge of SOAP and REST, Knowledge of XML and JSON, Higher education in Computer Science or related field, Ability to work in a team 📃 Skills: Java, Java11, SpringBoot, SpringIntegration, Hibernate, RelationalDatabases, Git, Maven, Jira, Jenkins, SOAP, REST, XML, JSON 🏢 Description: Praca przy rozwiązaniach bankowych, które trafiają do ponad 12 mln klientów. Projekty dotyczą dużych, ambitnych inicjatyw technologicznych, modernizacji architektury oraz rozwoju rozwiązań w środowisku enterprise. Twój zakres obowiązków Implementacja nowych i modyfikacja istniejących aplikacji i serwisów Tworzenie testów jednostkowych i integracyjnych Dbanie o wysoką jakość oprogramowania w zakresie funkcjonalności, wydajności i niezawodności Dokumentowanie zaimplementowanych rozwiązań Analiza możliwych rozwiązań technicznych Udział w pracach projektowych Nasze wymagania Minimum 5 lat komercyjnego doświadczenia w programowaniu w Java Doświadczenie w pracy z Java 11 lub wyższą Znajomość Spring Boot lub Spring Integration Znajomość Hibernate Znajomość relacyjnych baz danych Znajomość narzędzi Git, Maven, Jira i Jenkins Znajomość standardów SOAP, REST, XML i JSON Wykształcenie wyższe informatyczne lub pokrewne Umiejętność pracy w zespole Mile widziane Doświadczenie w środowisku chmurowym GCP Znajomość BigQuery, CloudSQL lub Pub/Sub Praktyczna znajomość nierelacyjnych baz danych Doświadczenie z konteneryzacją Znajomość Anthos, Kubernetes Engine lub Docker Znajomość innych frameworków, na przykład Micronaut Doświadczenie w bankowości

🏢 Summary: Development and modernization of a corporate banking platform, transforming a legacy monolith into a microservices-based architecture. The role focuses on building and integrating REST APIs, refactoring legacy systems, and supporting migration using modern engineering practices in an Agile/SAFe environment. You will work across monolithic and microservices architectures, contributing to backend development and system integration. 🗂️ Requirements: Proficiency in Java, Experience with Spring Framework and Hibernate, Strong knowledge of SQL, Experience in REST API development, Understanding of microservices architecture, Experience with Cucumber and Jasmine, Ability to refactor legacy systems, Experience with system integration, English proficiency for technical communication 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Cucumber, Jasmine, Angular, Git, DDD, Hexagonal, WebFlux, Reactor, SAFe, Agile 🏢 Description: About the Project Join an international team responsible for the development and modernization of a key corporate banking platform. The project focuses on transforming a legacy monolithic system into a modern architecture based on microservices while building new APIs that support the platform's future growth. You will work in an Agile/SAFe environment, leveraging modern engineering practices and architectural patterns. Responsibilities Design and develop REST APIs Build and maintain backend applications using Java and Spring Framework Integrate systems and support system-to-system communication Refactor legacy applications and extract business logic into microservices Contribute to the modernization and migration of existing systems Develop solutions across both monolithic and microservices architectures Work with reactive programming technologies and frameworks Support frontend integration with Angular-based applications Create and maintain unit and BDD tests Participate in code reviews and ensure high code quality standards Collaborate with cross-functional teams and stakeholders Produce and maintain technical and API documentation Requirements Must-Have Skills Java Spring Framework / Hibernate SQL REST API development Microservices architecture Cucumber Jasmine Strong English communication skills Nice to Have Angular Technology Stack Java Spring Boot Hibernate SQL REST APIs Microservices Angular Cucumber Jasmine Git Domain-Driven Design (DDD) Hexagonal Architecture (Ports & Adapters) WebFlux / Project Reactor SAFe Agile

🏢 Summary: Hybrid B2B role in the banking sector focused on designing and maintaining data models for credit and financial data processes. The position involves translating business requirements into scalable technical solutions, ensuring data quality, and supporting integrations, automation, and end-to-end solution design. Candidates will collaborate with stakeholders and technical teams while working with SQL, Python, and data integration technologies. 🗂️ Requirements: Extensive experience in data modeling and solution design, Strong SQL skills, Hands-on experience with relational databases, Good programming skills in Python, Experience with data integration and transformation, Experience with data mapping across multiple systems, Understanding of APIs and system integrations, Understanding of process modeling, Experience ensuring data quality and governance standards, Strong analytical and problem-solving skills, Experience translating business requirements into technical solutions, Experience working with business stakeholders, Fluent English 📃 Skills: SQL, Python, APIs, Kafka, PowerBI, Java 🏢 Description: Industry: banking Location: hybrid - 3 days per week from office in Warsaw or Gdańsk Rate: 165 pln/h on b2b Summary: The primary objective of this role is to design and maintain data models that support credit and financial data processes. This position focuses on translating business requirements into scalable technical solutions, ensuring data quality, and facilitating collaboration between technical and non-technical teams. Main Responsibilities: Design and maintain data models supporting credit and financial data processes. Analyse business requirements and translate them into scalable technical solutions. Define and manage data mappings between multiple systems to ensure accurate data integration and transformation. Ensure data quality, consistency, traceability, and auditability across the solution landscape. Collaborate with business stakeholders, architects, and development teams on end-to-end solution design. Prepare and maintain technical documentation and functional specifications. Support process optimization and automation using AI-assisted tools. Participate in solution implementation, testing, and continuous improvement activities. Key Requirements: Extensive experience in data modeling and solution design. Strong SQL skills and hands-on experience with relational databases. Good programming skills in Python. Experience with data integration, transformation, and data mapping across multiple systems. Understanding of APIs, system integrations, and process modeling. Experience ensuring data quality, consistency, and governance standards. Strong analytical and problem-solving skills. Experience working directly with business stakeholders and translating business requirements into technical solutions. Fluent English, both written and spoken. Nice to Have: Knowledge of Kafka. Experience with Power BI. Familiarity with Java development. Understanding of data warehouse concepts and architecture. Experience using AI tools for documentation, testing, data analysis or development support. Experience in banking, finance, or regulatory reporting environments. Knowledge of credit risk, rating, or financial statement data domains.

🏢 Summary: Long-term B2B opportunity for a senior engineer to deliver production-ready code and shape system architecture in a microservices environment. The role combines hands-on Java and React development with architectural responsibilities in a global, collaborative setup. It focuses on high-frequency delivery and technical excellence within the financial sector. 🗂️ Requirements: Strong Java experience (latest versions), Strong React experience, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Proven high-frequency code delivery, Experience in banking or financial sector 📃 Skills: Java, React, Microservices, REST, PostgreSQL, Banking, Docker, Kubernetes 🏢 Description: Working mode : Hybrid - 6 days per month at the Warsaw office Contract type : B2B, long term cooperation Rate : 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: Senior Angular Developer with Java skills role in an international banking environment, focused on building and modernizing scalable credit and financial systems within Agile teams. The position involves developing Angular frontends and Java-based microservices in a cloud-oriented, highly regulated setting. Hybrid work model with 4 remote days per week from Warsaw or Krakow. 🗂️ Requirements: 6–8 years of experience as an Angular Developer, Strong experience with Angular (8+), Practical experience with TypeScript, Experience with component-based architecture, services, routing and state management, Experience building RESTful APIs and microservices-based solutions, Strong knowledge of Java 11+, Experience with Spring Framework (Boot, Batch, Security), Experience with Oracle databases, Strong SQL and PL/SQL skills, Understanding of Agile methodologies, Knowledge of web services, APIs and distributed systems, Familiarity with CI/CD tools (e.g., Jenkins), Fluent English, Legal right to work in the European Union 📃 Skills: Angular, TypeScript, Java, Spring, Boot, Batch, Security, Microservices, REST, Oracle, SQL, PL/SQL, Jenkins, CI/CD 🏢 Description: Unleash innovation at the intersection of finance and technology — shape the future of international banking! Warsaw or Krakow-based opportunity with a hybrid work model, offering 4 remote days per week. As a Senior Angular Developer with Java Skills you will be working for our client, a leading international financial institution undergoing a major technology transformation. You will join a modern engineering hub responsible for developing and enhancing mission-critical banking applications used across global markets. Working within international Agile teams, you will contribute to the design, development, and modernization of scalable credit and financial systems while collaborating with stakeholders and engineering teams across multiple locations. This role offers the opportunity to work with modern Java technologies, microservices architecture, and cloud-oriented solutions in a highly regulated environment. Your main responsibilities: Develop and design scalable banking applications supporting international business operations Analyze business requirements and translate them into technical solutions Design, develop, test and implement software aligned with architecture and regulatory standards Build and maintain backend services using Java and microservices architecture Develop and enhance frontend components using Angular and related technologies Collaborate with international teams to plan, estimate and deliver development initiatives Perform code reviews and contribute to software quality improvements Refactor and optimize existing applications to improve maintainability and performance Support application maintenance and resolve production issues when required Mentor team members and share technical knowledge across the development team You're ideal for this role if you have: 6–8 years of experience as an Angular Developer Strong experience with Angular (Angular 8+), including practical experience with TypeScript, component-based architecture, services, routing and state management concepts Experience building RESTful APIs and microservices-based solutions Solid foundation in Java 11+ and Spring Framework including Boot, Batch and Security Experience working with Oracle databases, SQL and PL/SQL Understanding of Agile software development methodologies Knowledge of web services, APIs and distributed system architectures Familiarity with DevOps practices and CI/CD tools such as Jenkins Excellent communication and collaboration skills It is a strong plus if you have: Banking or financial industry experience and domain knowledge Language required for the role: Fluent English 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.

🏢 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.

🏢 Summary: Long-term B2B hybrid role focused on hands-on Java and React development within a microservices architecture, contributing directly to production code and system design. The position emphasizes high-frequency delivery, REST API development, and collaboration in a global engineering environment. It combines technical leadership with active development in financial-sector projects. 🗂️ Requirements: Strong experience with Java, Strong experience with ReactJS, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Recent experience with modern Java versions, Ability to deliver code changes frequently, Background in banking or financial sector 📃 Skills: Java, ReactJS, Microservices, REST, PostgreSQL, Docker, Kubernetes 🏢 Description: Working mode: Hybrid - 6 days per month at the Kraków office Contract type: B2B, long term cooperation Rate: 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.