Senior Backend Developer

🏢 Summary: Development role in an international project focused on modernizing a corporate banking system by transforming a legacy monolith into a microservices-based, reactive architecture. The position involves designing and implementing REST APIs, system integrations, and contributing to architectural decisions within a hybrid environment. The project offers active participation in large-scale system transformation using modern engineering practices. 🗂️ Requirements: Very good knowledge of Java, Very good knowledge of Angular, Very good knowledge of Spring and Hibernate, Strong knowledge of REST, Strong knowledge of SQL, Experience with Microservices architecture, Experience with Reactive programming, Knowledge of Cucumber, Knowledge of Jasmine, Experience with legacy system modernization, Practical knowledge of Git, Ability to write unit tests using JUnit, Understanding of SOLID principles and design patterns, Good command of English 📃 Skills: Java, Angular, Spring, Hibernate, REST, SQL, Microservices, WebFlux, Reactor, Cucumber, Jasmine, Git, JUnit, DDD, SOLID, SAFe, Hexagonal 🏢 Description: About the project You will join an international team working on the modernization of an enterprise-class system in the corporate banking area. The project focuses on transforming a legacy system into a modern architecture based on microservices and building efficient, scalable APIs. We work in an environment: Microservices + monolith (hybrid architecture) DDD (Domain-Driven Design) Hexagonal architecture Reactive stack (WebFlux, Project Reactor) SAFe Agile Your responsibilities Designing and implementing REST API System integrations (system-to-system communication) Refactoring the legacy system and migration to microservices Working on system modernization and development Creating solutions in reactive architecture Frontend support (Angular – basic level is sufficient) Writing tests: unit tests (JUnit, Jasmine) BDD (Cucumber) Participating in code reviews and ensuring code quality Working according to SOLID principles and design patterns Working with SQL databases Collaboration in an Agile team (PI Planning, daily, retro) Creating technical documentation Requirements Very good knowledge of: Java Angular Spring (Spring Framework / Hibernate) REST API SQL Experience with: Microservices Reactive programming (e.g. WebFlux) Knowledge of: Cucumber Jasmine Experience working with legacy systems and their modernization Practical knowledge of Git Good command of English Nice to have Experience with monolith to microservices migration Knowledge of DDD approach Experience in banking environment or large enterprise systems What the project offers Participation in a real system transformation (not only maintenance!) Long-term, stable project Technological challenges (legacy modernization → microservices) Work in an international environment Influence on architecture and solutions

🏢 Summary: Senior FullStack Developer role focused on developing and modernizing a large-scale corporate banking platform. The position involves building and maintaining backend services and Angular frontend components, delivering new features, fixing defects, and supporting production systems within a microservices and monolithic architecture. The role includes active participation in system modernization and REST API development in an Agile environment. 🗂️ Requirements: 5+ years commercial experience with Java 7/8, Experience with Spring Framework and Spring Boot, Experience with Maven, Experience with SQL, Experience with Git, Experience with JSP, Experience with JavaScript, Experience designing and developing REST APIs, Experience in backend service design and implementation, Strong knowledge of unit testing practices, 2+ years experience with Angular, Experience with Jasmine, Experience working with legacy code, Experience working in Agile environment 📃 Skills: Java, Spring, SpringBoot, Maven, SQL, Git, JSP, JavaScript, Angular, Jasmine, REST, Microservices, Agile 🏢 Description: About the Project We are looking for an experienced Senior FullStack Developer to join an international team working on a large-scale corporate banking platform. The application enables corporate clients to manage accounts, execute payments and transfers, handle files and confirmations, and perform a variety of banking operations through a secure online portal. As part of the development team, you will be responsible for maintaining and enhancing a business-critical application, including the delivery of new features, bug fixes, production incident resolution, and implementation of regulatory and business-driven changes. The system consists of both microservices and monolithic components. The team is currently on a modernization journey, gradually transforming the existing platform into a more modern architecture. The working language is English, and the team follows SAFe Agile principles. Responsibilities Design and implement backend services based on business and technical requirements. Develop and maintain REST APIs. Contribute to frontend development using Angular. Write and maintain unit tests. Analyze, maintain, and enhance existing code, including legacy components. Collaborate with cross-functional and international teams. Participate in system modernization and architectural improvements. Support production systems and troubleshoot issues when required. Requirements Must Have 5+ years of commercial experience with: Java 7/8 Spring Framework Spring Boot Maven SQL Git JSP JavaScript Experience in designing and developing REST APIs. Experience in backend service design and implementation based on specifications. Strong understanding of unit testing practices. 2+ years of experience with: Angular Jasmine Experience working in an Agile environment. Willingness to analyze and work with legacy code. Strong communication and collaboration skills. Fluent English (spoken and written). Nice to Have Knowledge of SOLID principles. Familiarity with software design patterns. What We Offer Opportunity to work on a large-scale enterprise platform within the financial sector. Participation in system modernization and transformation initiatives. International and collaborative work environment. Long-term cooperation in a stable project. Exposure to both modern and legacy technologies. Real impact on technical solutions and product development.

🏢 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: The offer is for a Senior Java Developer responsible for developing and modernising a Corporate Netbank application, including backend services and REST APIs. The role involves working with both microservices and monolithic architecture, implementing new features, fixing bugs, and supporting production in an Agile/SAFe environment. The position also requires analysing legacy code and contributing to ongoing system improvements. 🗂️ Requirements: Minimum 5 years of Java development experience, Strong experience with Java 7/8, Practical experience with Maven, Practical experience with Git, Practical experience with Spring Framework, Practical experience with Spring Boot, Good knowledge of SQL, Experience with JSP, Experience with JavaScript, Experience in writing REST APIs, Experience in backend services design and implementation, Experience with unit testing, Minimum 2 years of experience with Angular, Minimum 2 years of experience with Jasmine, Experience working in Agile environment, Willingness to analyse and maintain legacy code, Fluency in English 📃 Skills: Java, Maven, Git, Spring, SpringBoot, SQL, JSP, JavaScript, REST, Angular, Jasmine, Agile, Microservices 🏢 Description: Responsibilities: Developing, maintaining, and enhancing the Corporate Netbank application Implementing new features and improvements based on business and technical requirements Fixing bugs and supporting the resolution of production incidents Implementing compliance and mandatory business changes Designing and implementing backend services according to given specifications Writing and maintaining REST APIs Working with both microservice-based and monolithic architecture Implementing unit tests to ensure high-quality delivery Analysing and working with legacy code Collaborating with international teams in an Agile/SAFe environment Supporting the ongoing modernisation of the existing system Requirements: Minimum 5 years of experience with Java development Strong experience with Java 7/8 Practical experience with Maven, Git, Spring Framework, and Spring Boot Good knowledge of SQL Experience with JSP, JavaScript, and frontend-related development Experience in writing REST APIs Experience in backend services design and implementation Experience with unit testing Minimum 2 years of experience with Angular and Jasmine Experience working in an Agile environment Willingness to analyse, maintain, and improve legacy code Good communication skills Fluency in English Nice to have: Knowledge of SOLID principles Knowledge of design patterns Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 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: FullStack Developer role in an international team developing and modernizing a corporate online banking platform (Corporate Netbank). The position involves building new features and maintaining existing components across monolithic and microservices architectures using Java and Angular. The work includes backend services, REST APIs, legacy code enhancement, testing, and Agile collaboration. 🗂️ Requirements: Minimum 5 years commercial experience with Java 7/8, Experience with Spring Framework and Spring Boot, Experience with Maven and JSP, Experience with JavaScript, Experience with Git, Experience with SQL, Experience designing and implementing REST API, Experience designing backend services, Experience writing unit tests, Minimum 2 years experience with Angular, Experience with Jasmine, Experience working in Agile environment, Ability to work with legacy systems, Very good English proficiency 📃 Skills: Java, Spring, SpringBoot, Maven, JSP, JavaScript, Angular, Jasmine, Git, SQL, REST, Agile 🏢 Description: O projekcie Dołącz do międzynarodowego zespołu rozwijającego system Corporate Netbank – platformę bankowości internetowej dla klientów korporacyjnych. Aplikacja umożliwia zarządzanie rachunkami, realizację płatności, obsługę plików oraz wykonywanie operacji finansowych za pośrednictwem nowoczesnego portalu online. Poszukujemy doświadczonego FullStack Developera, który wesprze rozwój i utrzymanie kluczowych komponentów systemu. Będziesz uczestniczyć zarówno w tworzeniu nowych funkcjonalności, jak i modernizacji istniejących rozwiązań opartych o architekturę monolityczną i mikroserwisową. Zakres obowiązków Rozwój i utrzymanie aplikacji biznesowych opartych o Java oraz Angular. Tworzenie nowych funkcjonalności zgodnie z wymaganiami biznesowymi. Projektowanie i implementacja usług backendowych oraz REST API. Analiza i rozwój istniejącego kodu, w tym rozwiązań legacy. Przygotowywanie testów jednostkowych. Diagnozowanie i usuwanie błędów oraz wsparcie przy incydentach produkcyjnych. Współpraca z międzynarodowym zespołem projektowym pracującym w metodyce SAFe Agile. Wymagania Must have Minimum 5 lat doświadczenia komercyjnego w pracy z: Java 7/8, Spring Framework, Spring Boot, Maven, JSP, JavaScript, Git, SQL. Doświadczenie w projektowaniu i implementacji REST API. Umiejętność projektowania usług backendowych zgodnie ze specyfikacją. Doświadczenie w tworzeniu testów jednostkowych. Minimum 2 lata doświadczenia z Angular oraz Jasmine. Doświadczenie w pracy w środowisku Agile. Gotowość do pracy z istniejącymi systemami i kodem legacy. Dobre umiejętności komunikacyjne. Bardzo dobra znajomość języka angielskiego. Mile widziane Znajomość zasad SOLID. Znajomość wzorców projektowych (Design Patterns). Oferujemy Udział w rozwoju kluczowego systemu dla klientów korporacyjnych. Pracę w międzynarodowym środowisku. Możliwość zdobywania doświadczenia zarówno w architekturze monolitycznej, jak i mikroserwisowej. Udział w procesie modernizacji i transformacji technologicznej systemu. Pracę w zespole działającym zgodnie z metodyką SAFe Agile. Tryb pracy: hybryda, 2 dni w tygodniu w biurze (Warszawa lub Gdańsk). Kontrakt B2B, wynagrodzenie w PLN. Benefity zdrowotne i sportowe.

🏢 Summary: Senior Java Tech Lead role focused on designing and developing microservices-based backend systems, building REST APIs, and making architectural decisions in an Agile environment. The position includes mentoring team members, ensuring code quality, and supporting technical problem-solving. Experience with modern backend architecture, databases, and Atlassian tools is required. 🗂️ Requirements: Minimum 10 years of experience as Java Developer, Experience in Agile Scrum environment, Experience as Tech Lead or Team Leader, Very good knowledge of Java 11+, Experience with Java ecosystem, Practical experience with microservices architecture, Experience creating REST API, Ability to design complex backend systems, Knowledge of design patterns, Experience with relational databases, Experience with non-relational databases, Experience with Jira, Experience with Confluence, Strong analytical and problem-solving skills, Experience mentoring team members 📃 Skills: Java, REST, Microservices, Scrum, Jira, Confluence, SQL, NoSQL, Kafka, Angular, Docker, Kubernetes, DevOps 🏢 Description: Zakres obowiązków Projektowanie i rozwój rozwiązań w oparciu o architekturę mikroserwisową Tworzenie oraz rozwijanie REST API Projektowanie złożonych systemów backendowych Podejmowanie decyzji architektonicznych i technologicznych Wsparcie zespołu w rozwiązywaniu problemów technicznych Dbanie o jakość kodu i stosowanie najlepszych praktyk (clean code, design patterns) Mentoring i rozwój innych członków zespołu Współpraca w metodyce Agile (Scrum) z wykorzystaniem narzędzi Atlassian Wymagania Minimum 10 lat doświadczenia jako Java Developer w środowisku Agile (Scrum) Doświadczenie w roli Tech Leada / Lidera zespołu Bardzo dobra znajomość Java (11+) i ekosystemu Java Praktyczne doświadczenie z architekturą mikroserwisową Doświadczenie w tworzeniu REST API Umiejętność projektowania złożonych systemów Znajomość wzorców projektowych Praca z bazami danych: relacyjnymi i nierelacyjnymi Doświadczenie z Jira, Confluence (Atlassian) Silne umiejętności analityczne i rozwiązywania problemów Doświadczenie w mentorowaniu zespołu Mile widziane Doświadczenie z Kafka lub innymi systemami kolejkowymi Znajomość technologii frontendowych (np. Angular ) Wiedza z obszaru DevOps Doświadczenie z Docker, Kubernetes Znajomość wzorców integracyjnych Doświadczenie w branży finansowej lub ubezpieczeniowej

🏢 Summary: Senior/Mid+ Java Developer role focused on transforming a high-scale credit decisioning platform from monolith to microservices, building mission-critical applications and event-driven systems. The position involves designing scalable Java solutions within the Spring and Hibernate ecosystem, managing complex SQL data flows, and developing high-performance APIs. The role also includes working in a CI/CD-driven Scrum environment with international collaboration. 🗂️ Requirements: Strong experience with Java 8/17/21, Experience with Spring and Hibernate in large-scale applications, Strong knowledge of SQL, Experience building RESTful APIs, Experience with Git, Maven, and TeamCity, Familiarity with microservices architecture, Familiarity with Apache Kafka, Experience working in Scrum environment, English and Polish proficiency 📃 Skills: Java, Spring, Hibernate, SQL, REST, Git, Maven, TeamCity, Kafka, Microservices, CI/CD, Scrum 🏢 Description: Join our engineering team to drive the transformation of high-scale credit decisioning platforms. We are looking for an owner-minded developer ready to evolve our systems from monolith to microservices. Your Impact: Modernizing Architecture: Transition core processes from monolithic structures to modular microservices to enhance scalability and domain ownership. High-Scale Java Dev: Design mission-critical apps using Java 8/17/21 within a robust Spring & Hibernate ecosystem. Data & API Engineering: Manage complex SQL-based data flows and build high-performance APIs to connect internal and external global partners. Event-Driven Systems: Leverage Apache Kafka to build resilient, asynchronous communication between distributed services. Engineering Excellence: Maintain CI/CD standards using Git, Maven, and TeamCity within an international Scrum environment. Global Collaboration: Communicate technical concepts clearly in Polish and English to ensure smooth delivery across markets. What You Bring: Expertise: Solid experience in Java 8/17/21 and large-scale Spring + Hibernate applications. Technical Core: Strong command of SQL, RESTful APIs, and Git/Maven/TeamCity environments. Architectural Mindset: Familiarity with microservices and Apache Kafka (or a strong desire to learn). Seniority: You are a Senior or an ambitious Mid+ developer with a proactive, growth-oriented attitude.

🏢 Summary: Senior Java Developer role focused on designing and developing backend systems based on microservices architecture and REST API. The position includes architectural decision-making, maintaining code quality, and supporting the team in solving technical challenges within an Agile Scrum environment. Experience with modern backend technologies, databases, and integration patterns is required. 🗂️ Requirements: 6-8 years of experience as a Java Developer, Experience working in Agile Scrum environment, Strong knowledge of Java 11+, Experience with Java ecosystem, Practical experience with microservices architecture, Experience developing REST API, Ability to design complex backend systems, Knowledge of design patterns, Experience with relational databases, Experience with non-relational databases, Experience with Jira, Experience with Confluence, Strong analytical and problem-solving skills 📃 Skills: Java, REST, Microservices, Scrum, Jira, Confluence, Atlassian, SQL, NoSQL, Kafka, Angular, Docker, Kubernetes 🏢 Description: Zakres obowiązków Projektowanie i rozwój rozwiązań w oparciu o architekturę mikroserwisową Tworzenie oraz rozwijanie REST API Projektowanie złożonych systemów backendowych Podejmowanie decyzji architektonicznych i technologicznych Wsparcie zespołu w rozwiązywaniu problemów technicznych Dbanie o jakość kodu i stosowanie najlepszych praktyk (clean code, design patterns) Współpraca w metodyce Agile (Scrum) z wykorzystaniem narzędzi Atlassian Wymagania Minimum 6-8 lat doświadczenia jako Java Developer w środowisku Agile (Scrum) Bardzo dobra znajomość Java (11+) i ekosystemu Java Praktyczne doświadczenie z architekturą mikroserwisową Doświadczenie w tworzeniu REST API Umiejętność projektowania złożonych systemów Znajomość wzorców projektowych Praca z bazami danych: relacyjnymi i nierelacyjnymi Doświadczenie z Jira, Confluence (Atlassian) Silne umiejętności analityczne i rozwiązywania problemów Mile widziane Doświadczenie z Kafka lub innymi systemami kolejkowymi Znajomość technologii frontendowych (np. Angular ) Wiedza z obszaru DevOps Doświadczenie z Docker, Kubernetes Znajomość wzorców integracyjnych Doświadczenie w branży finansowej lub ubezpieczeniowej