Sr Java Developer (paytech)

🏢 Summary: Development role focused on building and maintaining a modern microservices-based payment processing platform in a high-volume environment. The position involves designing, implementing, and supporting Java-based services, ensuring scalability, reliability, and performance. Work is done in a hybrid model with strong emphasis on quality, testing, and production support. 🗂️ Requirements: Minimum 3 years of experience in similar role, Strong Java development experience, Knowledge of Spring Boot, Understanding of microservices architecture, Understanding of distributed systems, Experience with API design, Experience with at least some of the listed technologies, Ability to perform unit testing and code reviews, Fluent English 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, OpenShift, Kafka, RabbitMQ, MongoDB, Oracle, SQL, REST, Groovy, Maven, Jenkins, Jira, Confluence 🏢 Description: About the Project Our client is a European payments organization undergoing a major digital transformation focused on modernizing its core transaction‑processing platform. The team is building a modern microservices‑based environment designed to increase scalability, reliability, and performance across high‑volume payment operations. Technology stack in use: Java 21 (Spring Boot 3), OpenShift / Kubernetes, Apache Kafka / Rabbit MQ for streaming and queuing, MongoDB, Oracle Database, multiple DevOps tools for development, automation and monitoring. Work mode: hybrid, 3-4 per week from Cracow office Key Responsibilities: ·       Design, develop and support testing payment services features together with the team. ·       Resolve issues by troubleshooting and root cause analysis and support in production issue analysis when needed. ·       Ensure high quality via unit testing and code reviews. ·       Demo and document the results of work in demo sessions. Required Experience & Skills: ·       At least 3 years on similar position ·       Technical knowledge in at least some of the technologies used is needed. ·       Java development skills are the most relevant. ·       Understanding of microservices architecture and distributed systems. ·       Familiarity with API design principles. ·       Fluent English Additional Valuable Skills: ·       Experience in designing and implementing high-throughput, low-latency systems capable of handling large data volumes ·       Groovy, Maven, Jenkins ·       Knowledge of the Card Processing domain ·       Documentation and use of Jira/Confluence ·       Excellent communication and coordination skills We offer Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad

🏢 Summary: Offer for a senior engineer responsible for developing and maintaining a modern cloud-based technical platform supporting key financial products in a large e-commerce environment. The role focuses on building scalable, high-availability multi-region solutions and optimizing Kubernetes-based infrastructure. It includes automation, Java/Kotlin ecosystem tooling, and close collaboration with product teams. 🗂️ Requirements: Minimum 5 years of experience in similar role, Very good knowledge of Java and Kotlin, Experience with distributed systems architecture, Practical experience with Docker and cloud environments (preferably Azure), Experience with Kubernetes and GitOps tools (Istio, ArgoCD, Helm), Ability to design high-availability solutions, Experience in building automation and tools for Java environments, Knowledge of scripting languages (Bash or PowerShell), English level B2 or higher, Availability to work from Warsaw office at least once a week 📃 Skills: Java, Kotlin, Java21, Kubernetes, Docker, Azure, Istio, ArgoCD, Helm, GitOps, Bash, PowerShell 🏢 Description: O projekcie: Projekt dotyczy rozwoju i utrzymania nowoczesnej platformy technicznej w chmurze, wspierającej kluczowe produkty finansowe dużego serwisu e-commerce . Zespół odpowiada za tworzenie skalowalnych, wysokodostępnych rozwiązań oraz zapewnienie stabilnego środowiska pracy dla zespołów produktowych. Start: ASAP Czas trwania projektu: do końca 2026 (z możliwością przedłużenia) Model pracy: praca hybrydowa z Warszawy Zakres obowiązków Rozwój i utrzymanie platformy technicznej w chmurze, wspierającej kluczowe produkty finansowe dużego serwisu e-commerce Projektowanie i wdrażanie skalowalnych oraz wysokodostępnych rozwiązań w architekturze multi-region Optymalizacja i utrzymanie środowisk Kubernetes , w tym narzędzi i usług takich jak Istio i ArgoCD Tworzenie i rozwój narzędzi dla ekosystemu Java/Kotlin (Java 25) Wdrażanie automatyzacji i integracji wspierających efektywność pracy zespołów produktowych Badanie nowych technologii, realizacja PoC oraz przygotowywanie analiz i rekomendacji Współpraca z zespołami produktowymi w celu zapewnienia wydajnego i stabilnego środowiska pracy Oczekiwania Minimum 5 lat doświadczenia na podobnym stanowisku Bardzo dobra znajomość języków Java/Kotlin Doświadczenie w pracy z systemami rozproszonymi i ich architekturą Praktyczne umiejętności w zakresie konteneryzacji (np. Docker ) oraz pracy w środowiskach chmurowych (preferowana Azure ) Doświadczenie w pracy z Kubernetes oraz narzędziami GitOps (Istio, ArgoCD, Helm) Umiejętność tworzenia narzędzi i automatyzacji procesów dla środowiska Java Znajomość języków skryptowych (np. Bash, PowerShell) Umiejętność projektowania rozwiązań wysokodostępnych Otwartość na dzielenie się wiedzą oraz konstruktywny feedback w ramach code review Komunikatywność i umiejętność współpracy w zespole Otwartośc do brania udziału w dyżurach on-call (2x/msc po 48h) Znajomość języka angielskiego umożliwiający swobodną komunikację - B2 Oferujemy Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu rozwoju w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami rozwoju , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne, zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat, Pakiet benefitów zaplanowany od A do Z, czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą. O 7N Ciągłe poszukiwanie projektów, trudne negocjacje stawek, brak wsparcia w rozwoju – brzmi znajomo? W 7N zyskujesz nie tylko stabilność kontraktów, ale też zaangażowanie osobistego opiekuna dbającego o Twój komfort zawodowy i stały dostęp do inicjatyw rozwojowych. Naszym celem jest zapewnienie Ci stabilnej i komfortowej współpracy, która przyczyni się do sukcesu Twojego jako eksperta IT oraz naszych klientów. Budujemy trwałe relacje, bazując na skandynawskich wartościach i 30-letnim doświadczeniu w tworzeniu rozwiązań IT dla ponad 200 organizacji.

🏢 Summary: Fullstack Engineer role focused on building and scaling a data and analytics platform for investment decision-making, leveraging machine learning and strategic data. The position involves end-to-end development of production-grade applications, API integration, and ensuring platform scalability and performance in a hybrid work model. 🗂️ Requirements: 4+ years of experience with TypeScript and Node.js in production environments, Strong knowledge of HTML and CSS, Experience with SQL and PostgreSQL databases, Ability to design and integrate REST and GraphQL APIs, Experience with automated testing, pair programming, and peer review practices 📃 Skills: TypeScript, Node.js, HTML, CSS, SQL, PostgreSQL, GraphQL, REST, GCP, DevOps 🏢 Description: About the Project: Our client is a Swedish fintech company expanding in Poland. This project focuses on developing a data and analytics platform designed to revolutionize investment decision-making by leveraging machine learning and strategic data. As a Fullstack Engineer, you will design, develop, and maintain scalable solutions, collaborating with cross-functional teams to ensure the delivery of high-quality features. Work Mode : Hybrid – 2/3 days in the Warsaw office Job Responsibilities: Collaborate with cross-functional teams to ensure the delivery of high-quality features. Contribute to all stages of the development lifecycle. Design, develop, and maintain scalable solutions that support investment operations. Leverage machine learning and strategic data to deliver exceptional insights. Work closely with passionate professionals who believe in collaboration, innovation, and making a meaningful impact. Ensure the platform's scalability and performance through continuous improvement and optimization. Expectations: Must have: 4+ years of experience developing production-grade applications using TypeScript and Node.js Strong understanding of HTML, CSS, and design principles Knowledge of database management with SQL and PostgreSQL Experience with software craftsmanship practices, including automated testing, pair programming, and peer review Ability to write and integrate APIs in various formats such as GraphQL and Rest Nice to have: Experience with Google Cloud Platform (GCP) and DevOps practices. Familiarity with cloud-native development and scalable system architectures. We offer: Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

🏢 Summary: Senior Fullstack Developer (Java) role focused mainly on backend development for a logistics platform providing operational monitoring, schedule transparency, and analytical insights. The position involves designing, developing, and maintaining Java EE applications, including modernization and cloud migration initiatives. Work is primarily remote with occasional on-site visits. 🗂️ Requirements: Minimum 5 years of experience as Fullstack Developer, Strong proficiency in Java, Experience with JSF, JPA, EJB, CDI, JAXRS, Hands-on experience in JEE web application development, Basic knowledge of SQL, Basic knowledge of UNIX, Experience with Maven, Experience with Git, Ability to manage and maintain Payara Server, Experience with requirements analysis and UML modeling, Fluent English (written and spoken) 📃 Skills: Java, JEE, JSF, JPA, EJB, CDI, JAXRS, SQL, UNIX, Maven, Git, Payara, OpenAPI, DB2, Neptune, OpenSearch, PrimeFaces, GitLab, Jenkins, JFrog, AWS, UML 🏢 Description: About the Project For our Client - a global logistics company we are looking for a Senior Fullstack Developer (Java) who will be working with a platform that integrates several sources for giving transparent view for coastals schedule to internal operational stakeholders. Team also provides the tools for the operational monitoring, past performance analysis and recovery measures. Additional insights provided by the platform are based on statistical & analytical approaches (e.g. move prediction, avg. port time, etc.) The role is approx. 75% BE tasks and 25% FE tasks. Tech: Java EE, JDK 8, Payara Server 5, OpenAPI, IBM DB2, Neptune graph DB from AWS, OpenSearch, UI: JSF + Primefaces, GitLab, Jenkins, JFrog Work Mode: remote (with occasional trips to Gdańsk) Job Responsibilities Design and implement full-stack applications (front- and backend) using Java (JEE) Write, test, debug, and document code, solutions, and applications Collaborate with your team to handle the entire software development life cycle: from analysis and design to testing, deployment, maintenance, operations, and 3rd-level support Work closely with internal stakeholders and external partners to analyze existing applications, solutions, business processes, and requirements Modernize and expand current applications by migrating from on-premises infrastructure to a cutting-edge cloud platform Manage and maintain existing on-premises infrastructure, including Payara Application Servers and standalone Java applications Expectations Min. 5 years of experience as Fullstack Developer Strong proficiency in Java, with knowledge of JSF, JPA, EJB, CDI, and JAX-RS Hands-on experience in JEE full-stack web application development Basic knowledge of SQL, UNIX, Maven, and Git Familiarity with requirements gathering, documentation, and the use of software design/modeling tools (e.g., UML) Solid understanding of software development processes, with flexibility and strong customer orientation Excellent command of English , both written and spoken, combined with strong communication skills Nice to have: Experience with agile development methodologies (e.g., Scrum); Knowledge of AWS cloud services (OpenSearch, EC2, Neptune, ECS); Work experience or familiarity with the international logistics industry; DevOps experience We offer Ongoing support from a dedicated agent , taking care of your project continuity, client contact, necessary formalities, work comfort and development Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle Spectacular integration events , both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres) Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years A complete benefits package , including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.

🏢 Summary: The offer is for a Software Developer in Test to design and implement automated testing frameworks for a scalable financial platform, ensuring high quality across distributed microservices systems. The role focuses on backend and frontend test automation, performance and security testing, and close collaboration within agile teams. It combines hands-on coding in Java with shaping quality engineering practices in a cloud-based environment. 🗂️ Requirements: Strong proficiency in Java, Experience with backend test automation frameworks, Experience with frontend test automation frameworks, Experience integrating tests into CI/CD pipelines, Knowledge of performance testing methodologies and tools, Knowledge of automated security testing methodologies and tools, Familiarity with cloud environments, Familiarity with configuration management, Knowledge of BDD practices, Experience testing distributed microservices-based systems, Experience working in agile teams 📃 Skills: Java, Selenium, Cypress, JUnit, TestNG, Cucumber, BDD, CI/CD, Jenkins, Git, Docker, Kubernetes, AWS, Azure, GCP, Microservices 🏢 Description: We are looking for Software Developer in Test who will join our client that creates platform which enables businesses to seamlessly offer financial solutions to their customers in a secure and scalable way. Its end-to-end approach ensures full support across the entire journey, including compliance management and resilient customer support services. Operating mode: Hybrid, 2 x month Warsaw Office Job Responsibilities ·       Be part of customer-centric agile teams, working closely with product managers, designers, and engineers ·       Collaborate across teams to continuously refine and enhance testing approaches for both new and existing products ·       Write clean, maintainable, and reusable code that supports long-term scalability ·       Design and implement robust automated testing frameworks that enable fast and reliable delivery of value to customers ·       Support fellow engineers in testing their solutions and serve as a go-to expert in quality engineering ·       Partner with stakeholders across the organization to influence the future direction of quality practices and keep customer needs at the core of key decisions ·       Help drive the development of our testing discipline, ensuring high standards in both technology and processes Requirements: ·       Strong proficiency in Java with solid coding abilities ·       Practical experience using both backend and frontend test automation frameworks , including integrating them into CI/CD pipelines ·       Understanding of performance testing and automated security testing methodologies and tools ·       Familiarity with cloud environments and configuration management ·       Good knowledge of Behaviour-Driven Development ( BDD ) practices ·       Experience working in agile teams, testing and delivering distributed microservices-based systems We offer Ongoing support from a dedicated agent , taking care of your project continuity, client contact, necessary formalities, work comfort and development Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle Spectacular integration events , both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres) Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years A complete benefits package , including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad

🏢 Summary: Long-term role in a global medical diagnostics project focused on building and scaling a Java-based test automation framework for a cloud-ready digital platform. The position involves developing UI test automation, integrating tools, and supporting CI/CD within a Scaled Agile environment. You will collaborate with cross-functional teams to enhance automation capabilities across multiple product teams. 🗂️ Requirements: Minimum 5 years of experience in test automation, Strong expertise in Java and OOP, Experience building test automation frameworks from scratch, Hands-on experience with Playwright or Selenium, Experience with TestNG or JUnit, Knowledge of SOLID, DRY, KISS principles, Understanding of design patterns (Decorator, Factory, Facade, Strategy, Builder), Experience with Maven and multi-module projects, Experience with surefire, failsafe, compile plugins, Experience integrating xRay, Allure, Sonar, PMD, Knowledge of GitHub and GitHub Actions, Experience in CI/CD automation, Experience in SAFe or Scaled Agile environments, Experience with refactoring and static code analysis 📃 Skills: Java, OOP, Playwright, Selenium, TestNG, JUnit, Maven, xRay, Allure, Sonar, PMD, GitHub, GitHubActions, CI/CD, SAFe, SOLID, DRY, KISS, Lombok, POJO 🏢 Description: About project: You will join a long-term, strategic initiative developing an advanced digital platform supporting clinical workflows in the area of medical diagnostics. The solution is built in a modern ecosystem and used globally by healthcare professionals. The environment is highly scalable, cloud‑ready, and developed in an international, cross‑functional setup. The team is currently expanding its test automation capabilities and implementing a large-scale automation framework supporting multiple product teams across several locations. Job Responsibilities Collaboration with cross-functional teams (BE, FE, QA, PO, SM) to design, implement, and scale test automation solutions,Development and enhancement of the Java-based test automation framework , Creating and maintaining UI automated tests using Playwright (and Selenium where applicable), Working within 2-week sprints in a Scaled Agile setup,Ensuring code quality through refactoring , use of design patterns , and static analysis tools,Integrating the automation framework with xRay, Allure, Jira , Developing CI/CD automation using GitHub Actions ,Supporting the shift-left testing approach across the organization. Expectations At least 5 years of experience in test automation , Strong expertise in Java , deep knowledge of OOP , and experience building test automation frameworks from scratch , Hands-on experience with Playwright (or Selenium ) and test frameworks such as TestNG or JUnit , Practical understanding of SOLID , DRY , KISS , encapsulation , and common design patterns (including Decorators , Factories , Facades , Strategy , Builder ), Experience with Maven , especially multi‑module projects and plugins such as surefire , failsafe , and compile , Experience integrating tools such as xRay , Allure , Sonar , PMD , Good knowledge of GitHub and GitHub Actions ,Familiarity with Lombok , POJO definitions , and refactoring best practices , Experience working in SAFe / Scaled Agile environments, Strong communication skills and ability to collaborate effectively in distributed teams, Nice to have: experience with Python for basic performance testing and familiarity with AI agents / GitHub Copilot . We Offer Ongoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and development, Consultant Development Program - advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors, Access to 7N Learning & Development - a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events - technical, business, and lifestyle, Spectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres), Professional development not only during the project - you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients, Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad. About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sound familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our goal is to provide you with stable and comfortable cooperation, contributing to your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience in creating IT solutions for over 200 organizations.

🏢 Summary: Junior .NET Developer role focused on building and enhancing a next-generation payment processing platform using modern backend technologies. The position involves implementing backend features, contributing to microservices-based solutions, and learning best practices within an agile team environment. It offers hands-on experience with modern .NET stack and cloud-oriented development. 🗂️ Requirements: Completed degree in Computer Science or related field, Hands-on experience with C#, Experience with ASP.NET Core, Basic knowledge of relational databases, Knowledge of MSSQL, Understanding of Entity Framework Core, Interest in microservices architecture, Interest in cloud environments, Willingness to learn Kafka and CI/CD, Ability to write clean and maintainable code 📃 Skills: C#, .NET, ASPNETCore, MSSQL, EntityFrameworkCore, Microservices, Kafka, CICD, Cloud, SQL 🏢 Description: Responsibilities Support the development of a next-generation payment processing platform built using latest versions of .NET . Implement backend features under the guidance of experienced developers, focusing on clean, reliable and maintainable code. Collaborate within small agile teams, participate in daily activities, and learn best practices through code reviews and mentoring. Work with modern .NET technologies and tools to help solve real business problems and continuously improve the platform. Contribute to team discussions, share ideas, and proactively develop your skills in a supportive engineering environment. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Successfully completed university degree in computer science or a comparable field of study. Some hands-on experience with C# and ASP.NET Core (projects, internships, academic work or commercial experience). Basic understanding of relational databases (preferably MSSQL ) and Entity Framework Core . Interest in microservices , cloud environments and modern backend development patterns. Eagerness to learn technologies such as Kafka , CI/CD, and agile development practices. Ability to write simple, clean and well-structured code with openness to feedback. Fluency in Polish and good communication skills in English . Availability to work in a hybrid setup. About Nexi Digital Nexi is Europe's PayTech company operating in high-growth, attractive European markets and technologically advanced countries. Listed on Borsa Italiana's MTA, Nexi has the scale, geographic reach and abilities to drive the transition to a cashless Europe. With its portfolio of innovative products, e-commerce expertise and industry-specific solutions, Nexi provides flexible support for the digital economy and the entire payment ecosystem globally, across a broad range of different payment channels and methods. Nexi’s technological platform and the best-in-class professional skills in the sector lets the company operate at its best in three market segments: Merchant Services & Solutions, Cards & Digital Payments and Digital Banking & Corporate Solutions. Nexi constantly invests in technology and innovation, focusing on two fundamental principles: meeting, together with its partner banks, customer needs and creating new business opportunities for them. Nexi is committed to supporting people and businesses of all sizes, transforming the way people pay and businesses accept payments. It offers companies the most innovative and reliable solutions to better serve their customers and expand. By simplifying payments and enabling people and businesses to build closer relationships and grow together, Nexi promotes progress to benefit everyone.

🏢 Summary: Backend Developer role focused on building and maintaining scalable services using Java and Spring Boot, with strong emphasis on REST API design, system integrations, and event-driven architecture. The position involves working on production support, application monitoring, and containerized deployments, while contributing to a technological transformation towards a unified Node.js/TypeScript ecosystem. Hybrid work model with close collaboration across architecture, frontend, and product teams. 🗂️ Requirements: Minimum 4 years commercial experience in backend development with Java 21+, Commercial experience with Spring Boot 3.x, Experience designing scalable and maintainable backend services, Strong experience in REST API and OpenAPI design and integration, Knowledge of application security including Spring Security, OAuth2, JWT, Experience with NoSQL databases, preferably MongoDB, Experience with unit and integration testing, Experience with application monitoring, logging, and production issue resolution, Experience with Maven or similar build tools, Experience with Docker and Kubernetes, Ability to work with system integrations and event-driven architectures 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, OAuth2, JWT, REST, OpenAPI, MongoDB, NoSQL, Maven, Docker, Kubernetes, Node.js, TypeScript, Microservices, CI/CD, Logging, Monitoring, JUnit 🏢 Description: Model hybrydowy: 1-2 dni z biura w Centrum Warszawy Projekt: Rola obejmuje rozwój backendu, integracje systemowe, projektowanie API, architekturę opartą na zdarzeniach (event-driven) oraz wsparcie środowisk produkcyjnych. Zespół przechodzi obecnie transformację technologiczną w kierunku ujednoliconego ekosystemu Node.js / TypeScript. Zespół pracuje w modelu hybrydowym i ściśle współpracuje z architektami, zespołami frontendowymi, zespołami produktowymi oraz liderami technicznymi. Oczekiwania: Minimum 4-letnie komercyjne doświadczenie w rozwoju aplikacji backendowych w oparciu o Java 21+ oraz Spring Boot 3.x Doświadczenie w projektowaniu i implementacji skalowalnych, niezawodnych oraz łatwych w utrzymaniu usług backendowych Bardzo dobra znajomość projektowania oraz integracji REST API / OpenAPI Znajomość zagadnień związanych z bezpieczeństwem aplikacji, w szczególności Spring Security, OAuth2 oraz JWT Doświadczenie w pracy z bazami danych NoSQL , preferencyjnie MongoDB Praktyczna znajomość testów jednostkowych i integracyjnych oraz podejścia do automatyzacji testów i dbania o jakość kodu Doświadczenie w monitorowaniu aplikacji, logowaniu oraz analizie i rozwiązywaniu problemów produkcyjnych Znajomość narzędzi buildowych, takich jak Maven lub podobnych rozwiązań do zarządzania zależnościami i procesem budowania aplikacji Doświadczenie w pracy z konteneryzacją i środowiskami wdrożeniowymi (Docker, Kubernetes) Znajomość Node.js oraz TypeScript będzie dużym atutem, szczególnie w kontekście migracji technologicznych i nowoczesnych ekosystemów backendowych Umiejętność pracy w środowisku opartym o integracje systemowe oraz nowoczesne architektury backendowe Dbałość o jakość , bezpieczeństwo i stabilność rozwijanych rozwiązań Oferujemy: Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą O 7N Ciągłe poszukiwanie projektów, trudne negocjacje stawek, brak wsparcia w rozwoju – brzmi znajomo? W 7N zyskujesz nie tylko stabilność kontraktów, ale też zaangażowanie osobistego opiekuna dbającego o Twój komfort zawodowy i stały dostęp do inicjatyw rozwojowych. Naszym celem jest zapewnienie Ci stabilnej i komfortowej współpracy, która przyczyni się do sukcesu Twojego jako eksperta IT oraz naszych klientów. Budujemy trwałe relacje, bazując na skandynawskich wartościach i 30-letnim doświadczeniu w tworzeniu rozwiązań IT dla ponad 200 organizacji.

🏢 Summary: Backend Developer role focused on building and integrating scalable backend services using Java 21+ and Spring Boot 3.x, with strong emphasis on REST API design, security, and event-driven architecture. The project involves system integrations, production support, and participation in a technological transformation towards a unified Node.js / TypeScript ecosystem. Hybrid work model with close collaboration across architecture, frontend, and product teams. 🗂️ Requirements: Minimum 6 years of commercial backend development experience with Java 21+ and Spring Boot 3.x, Experience designing scalable and reliable backend services, Strong knowledge of REST API and OpenAPI design and integration, Knowledge of application security including Spring Security, OAuth2, JWT, Experience with NoSQL databases, preferably MongoDB, Experience with unit and integration testing, Experience with application monitoring, logging, and production issue resolution, Knowledge of build tools such as Maven, Experience with Docker and Kubernetes, Experience with system integrations and modern backend architectures 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, OAuth2, JWT, REST, OpenAPI, MongoDB, NoSQL, Maven, Docker, Kubernetes, Node.js, TypeScript, JUnit 🏢 Description: Model hybrydowy: 1-2 dni z biura w Centrum Warszawy Projekt: Rola obejmuje rozwój backendu, integracje systemowe, projektowanie API, architekturę opartą na zdarzeniach (event-driven) oraz wsparcie środowisk produkcyjnych. Zespół przechodzi obecnie transformację technologiczną w kierunku ujednoliconego ekosystemu Node.js / TypeScript. Zespół pracuje w modelu hybrydowym i ściśle współpracuje z architektami, zespołami frontendowymi, zespołami produktowymi oraz liderami technicznymi. Oczekiwania: Minimum 6-letnie komercyjne doświadczenie w rozwoju aplikacji backendowych w oparciu o Java 21+ oraz Spring Boot 3.x Doświadczenie w projektowaniu i implementacji skalowalnych, niezawodnych oraz łatwych w utrzymaniu usług backendowych Bardzo dobra znajomość projektowania oraz integracji REST API / OpenAPI Znajomość zagadnień związanych z bezpieczeństwem aplikacji, w szczególności Spring Security, OAuth2 oraz JWT Doświadczenie w pracy z bazami danych NoSQL , preferencyjnie MongoDB Praktyczna znajomość testów jednostkowych i integracyjnych oraz podejścia do automatyzacji testów i dbania o jakość kodu Doświadczenie w monitorowaniu aplikacji, logowaniu oraz analizie i rozwiązywaniu problemów produkcyjnych Znajomość narzędzi buildowych, takich jak Maven lub podobnych rozwiązań do zarządzania zależnościami i procesem budowania aplikacji Doświadczenie w pracy z konteneryzacją i środowiskami wdrożeniowymi (Docker, Kubernetes) Znajomość Node.js oraz TypeScript będzie dużym atutem, szczególnie w kontekście migracji technologicznych i nowoczesnych ekosystemów backendowych Umiejętność pracy w środowisku opartym o integracje systemowe oraz nowoczesne architektury backendowe Dbałość o jakość , bezpieczeństwo i stabilność rozwijanych rozwiązań Oferujemy: Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą O 7N Ciągłe poszukiwanie projektów, trudne negocjacje stawek, brak wsparcia w rozwoju – brzmi znajomo? W 7N zyskujesz nie tylko stabilność kontraktów, ale też zaangażowanie osobistego opiekuna dbającego o Twój komfort zawodowy i stały dostęp do inicjatyw rozwojowych. Naszym celem jest zapewnienie Ci stabilnej i komfortowej współpracy, która przyczyni się do sukcesu Twojego jako eksperta IT oraz naszych klientów. Budujemy trwałe relacje, bazując na skandynawskich wartościach i 30-letnim doświadczeniu w tworzeniu rozwiązań IT dla ponad 200 organizacji.

🏢 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