Java Developer

🏢 Summary: Long-term B2B contract for a Senior Java Developer to design and implement complex Java-based solutions in large-scale enterprise or public sector projects. The role involves technical leadership, mentoring, and working in a fully remote model without business travel. The position requires strong backend expertise and experience with modern Java ecosystems and cloud-native tools. 🗂️ Requirements: Minimum 5 years of professional experience in Java, Strong knowledge of Spring Boot, Experience with RESTful APIs, Experience with JUnit and Mockito, Experience with OpenShift, Experience with Helm, Experience with Spring Data or JPA, Minimum 1 year experience with Oracle or PostgreSQL, Minimum 2 years experience with Gradle, Experience in large-scale enterprise or public sector projects, Degree in Computer Science or equivalent, German C1, English minimum B1 📃 Skills: Java, Spring, SpringBoot, REST, JUnit, Mockito, OpenShift, Helm, JPA, SpringData, Oracle, PostgreSQL, Gradle, SQL 🏢 Description: Summary: The Senior Java Developer plays a crucial role in designing and implementing complex Java-based solutions, mentoring other team members, and contributing to large-scale projects in either the enterprise or public sectors. Remote work model Contract type : B2B, long-term- 48 months Business travels : No Salary Grids: 160-180 zł/h Main Responsibilities: Design and implement complex Java-based solutions. Mentor junior developers and assist in team knowledge sharing. Manage and contribute to large-scale enterprise or public-sector projects. Key Requirements: Fluent in German (C1) and English (min. B1). Degree in Computer Science or equivalent. Minimum of 5 years of professional experience in Java Strong understanding of Spring Boot, RESTful APIs, testing frameworks (JUnit, Mockito) Experience in OpenShift and Helm charts and ORM frameworks like Spring Data or JPA Knowledge of Oracle or PostgreSQL (min. 1 year). Experience with Gradle for continuous integration (min. 2 years). Experience with large public sector projects or comparable private sector engagements. Nice to Have: Additional years of experience with core technologies beyond the stipulated minimum. Frontend experience with React and TypeScript, and understanding of Ajax (min. 1 year). Experience with complex enterprise application integration.

🏢 Summary: Senior Java Developer role focused on designing and implementing complex Java-based solutions for large-scale enterprise or public sector projects. The position involves hands-on development, architectural contribution, and mentoring junior team members. The role requires strong expertise in modern Java ecosystems and enterprise integration environments. 🗂️ Requirements: Minimum 5 years of professional Java experience, Strong knowledge of Spring Boot and RESTful APIs, Experience with JUnit and Mockito testing frameworks, Experience with OpenShift and Helm, Experience with Spring Data or JPA ORM frameworks, Minimum 1 year experience with Oracle or PostgreSQL, Minimum 2 years experience with Gradle for CI, Experience in large-scale enterprise or public sector projects, Degree in Computer Science or equivalent, German C1 and English B1 proficiency 📃 Skills: Java, SpringBoot, REST, JUnit, Mockito, OpenShift, Helm, SpringData, JPA, Oracle, PostgreSQL, Gradle 🏢 Description: Summary: The Senior Java Developer plays a crucial role in designing and implementing complex Java-based solutions, mentoring other team members, and contributing to large-scale projects in either the enterprise or public sectors. Main Responsibilities: Design and implement complex Java-based solutions. Mentor junior developers and assist in team knowledge sharing. Manage and contribute to large-scale enterprise or public-sector projects. Key Requirements: Fluent in German (C1) and English (min. B1). Degree in Computer Science or equivalent. Minimum of 5 years of professional experience in Java Strong understanding of Spring Boot, RESTful APIs, testing frameworks (JUnit, Mockito) Experience in OpenShift and Helm charts and ORM frameworks like Spring Data or JPA Knowledge of Oracle or PostgreSQL (min. 1 year). Experience with Gradle for continuous integration (min. 2 years). Experience with large public sector projects or comparable private sector engagements. Nice to Have: Additional years of experience with core technologies beyond the stipulated minimum. Frontend experience with React and TypeScript, and understanding of Ajax (min. 1 year). Experience with complex enterprise application integration.

🏢 Summary: The role involves designing and developing Java-based tools and frameworks to support functional and performance testing within a QA team. It focuses on building automated solutions, improving testing efficiency, and contributing to software design, performance analysis, and code quality. The position also includes collaboration, technical documentation, and mentoring junior engineers. 🗂️ Requirements: 5+ years of software development experience, Strong proficiency in Java, Experience with SpringBoot, Experience with JPA and Hibernate, Experience building RESTful services, Knowledge of relational databases (DB2 or PostgreSQL), Strong understanding of Object-Oriented Programming, Understanding of Concurrent Programming, Experience with Git version control, Ability to write unit tests and conduct code reviews, English proficiency 📃 Skills: Java, SpringBoot, JPA, Hibernate, REST, DB2, PostgreSQL, SQL, OOP, Concurrency, Git, JUnit, Kafka, CQRS, Docker, Kubernetes 🏢 Description: Java Developer Role Overview Design and develop tooling to support functional and performance testing within the QA team. Implement automated solutions that improve testing efficiency and reliability. Provide hands-on development of test frameworks, utilities, and performance test tooling. Technical Skills Required 5+ years of development experience Proficiency in Java, SpringBoot, JPA, Hibernate, RESTful services Knowledge of relational databases (DB2/PostgreSQL) Good understanding of Object-Oriented and Concurrent Programming Solid experience with version control systems (preferred GIT) Language: English Bonus: Knowledge of event streaming, CQRS, Kafka, Docker/Kubernetes High-Level Task Assignment Perform hands-on software design and development. Investigate performance issues, support root-cause analysis, and collaborate on improvements. Write unit tests and perform peer design/code reviews. Provide technical solutions to complex problems and write technical documents. Work closely with requirements engineers to estimate and developed to quality products. Mentor and help grow junior members of the engineering team.

🏢 Summary: Talent Pool opportunity for a Java Developer responsible for end-to-end software development using Java and Spring. The role focuses on delivering high-quality, well-tested, and optimized code while collaborating within an agile team. Candidates will work on modern projects and contribute to performance, reliability, and maintainability of applications. 🗂️ Requirements: Minimum 2 years of experience with Java 8+, Experience with Spring Framework, Knowledge of OOP principles, Understanding of Clean Code principles, Experience with unit and integration testing, Knowledge of relational databases, Experience with Git, Experience with Maven or Gradle, Experience with CI/CD tools, Knowledge of Hibernate or JPA, Experience with JUnit, Understanding of Scrum methodology 📃 Skills: Java, Spring, OOP, CleanCode, SQL, Git, Maven, Gradle, CICD, Hibernate, JPA, JUnit, Scrum 🏢 Description: This posting is part of a Talent Pool for the Java Developer role. Submitted applications will be used to enable a quick response to future business needs. We will contact selected candidates only when a relevant recruitment process is initiated. Responsibilities: Participation in all aspects of software development Caring for the high quality of manufactured solutions, Implementation and analysis of the source code, Covering the source code with tests (unit and integration) and debugging; Source code documentation (Javadoc) Software optimization in terms of performance and availability, Constant cooperation with other members of the project team Getting to know the tools / technologies needed to meet the requirement Requirements: Minimum 2 years of experience in programming applications (Java 8 or higher) using Spring Framework Knowledge of OOP, Clean Code principles and code testing Knowledge of relational databases Knowledge of: Git, Maven/Gradle, CI/CD tools, Hibernate/JPA, JUnit, Knowledge of the SCRUM methodology Very good command of the English language (minimum B2) What can we offer: Flexible forms of employment and working hours (CoE or B2B) An interesting, challenging job in the dynamically developing Capital Group company; Work on innovative projects using modern technologies; Direct impact on shaping the image of the Capital Group’s companies on the market; Possibility to develop competences in a wide range; Attractive salary; Stability of employment and a friendly work atmosphere; Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;

🏢 Summary: The offer is for an experienced Java Developer to build and maintain scalable, enterprise-level applications supporting global travel platforms. The role involves full lifecycle development, designing and implementing REST/SOAP services, and working with modern Java technologies in an Agile, CI/CD-driven environment. You will collaborate with cross-functional teams to enhance business-critical systems and deliver high-quality, reliable software solutions. 🗂️ Requirements: Minimum 5 years of commercial experience as Java Developer, Experience with Java 8 and Java 17, Strong knowledge of Spring Framework, Strong knowledge of Hibernate, Strong knowledge of EclipseLink, Proficiency in Oracle SQL, Proficiency in PL/SQL, Experience with GitHub, Experience with TeamCity, Experience with Tomcat or Tomee, Experience designing and implementing REST web services, Experience designing and implementing SOAP web services, Knowledge of JSP, Knowledge of Struts, Knowledge of JavaScript, Experience with unit testing using JUnit, Very good command of English 📃 Skills: Java, Spring, Hibernate, EclipseLink, Oracle, SQL, PLSQL, GitHub, TeamCity, Tomcat, Tomee, REST, SOAP, JSP, Struts, JavaScript, JUnit 🏢 Description: We are looking for a Java Developer to join our team and contribute to building scalable, enterprise-level applications that support our global travel platforms. In this role, you will participate in the full software development lifecycle, working closely with Product Owners, QA Engineers, UX/UI Designers, and other developers to deliver reliable, high-quality solutions. You will play an important role in maintaining and enhancing business-critical systems while contributing to the continuous evolution of our technology landscape. Your responsibilities Participate in the full software development lifecycle, from requirements gathering and solution design to deployment and support Collaborate with Product Owners, Designers, QA Engineers, and Developers to deliver high-quality software solutions Design, develop, and maintain applications using Java technologies Write clean, efficient, and maintainable code following development best practices Develop and maintain automated unit tests using JUnit Design, implement, and maintain REST and SOAP web services Create, optimize, and troubleshoot SQL and PL/SQL queries Maintain and improve existing applications, including bug fixing and performance enhancements Prepare and maintain technical documentation Identify opportunities for system improvements and contribute to technical innovation Our requirements Minimum 5 years of commercial experience as a Java Developer Experience working with Java 8 and Java 17 Strong knowledge of Spring Framework, Hibernate, and EclipseLink Proficiency in Oracle SQL and PL/SQL Experience with tools such as GitHub, TeamCity, and Tomcat/Tomee Experience designing and implementing REST and SOAP web services Knowledge of JSP, Struts, and JavaScript Experience with unit testing using JUnit Strong analytical and problem-solving skills Very good command of English and ability to work in an international environment Nice to have Willingness to learn and work with React Experience with Linux, Docker, or AWS Familiarity with Java EE standards Understanding of CI/CD processes and modern development practices How we work Clean Code principles Design patterns and software engineering best practices Code reviews and knowledge sharing Continuous Integration and Continuous Deployment (CI/CD) Agile and collaborative development environment Cross-functional teams working closely across Product, QA, UX/UI, and Engineering Focus on quality, maintainability, and continuous improvement What we offer Hybrid work model (1–2 days per week in our Katowice office) Opportunity to work on international, large-scale projects used by customers worldwide Attractive remuneration paid in EUR Flexible working hours Individual learning and development budget Partially or fully funded training and certifications English lessons Mentoring and support from experienced technical leaders Participation in conferences in Poland and abroad A culture focused on collaboration, knowledge sharing, and continuous improvement Space to innovate and bring your own ideas to life Support for IT community initiatives and professional networking Long-term cooperation in a stable, growing international organization

🏢 Summary: The offer is for a Java Developer responsible for participating in the full software development lifecycle, implementing new features, and maintaining existing systems. The role involves working with modern Java technologies, relational databases, and cloud-based environments in a remote or hybrid setup. The project is delivered under a B2B contract with support from a dedicated mentor. 🗂️ Requirements: Very good knowledge of Java 21, Experience with Hibernate, Experience with Spring, Experience with Spring Boot, Understanding of relational databases, Knowledge of MySQL, Linux skills (user level or higher), Ability to work with Git, Advanced technical English skills, Experience with cloud-based architectures, Experience with Kubernetes 📃 Skills: Java, Hibernate, Spring, SpringBoot, MySQL, Linux, Git, Kubernetes, Cloud 🏢 Description: For our client we are looking for Java Developer! RESPONSIBILITIES • Participation in full development cycle: from requirements, specification up to architecture, development and system tests • Implementation of new functionalities • Maintenance of existing code REQUIREMENTS • Very good knowledge of Java 21, • Experience with Hibernate and Spring, Spring Boot frameworks, • Understanding relational databases, especially MySQL • Linux skills on user level or higher • Knowledge and ability to work with version control system Git • Advanced technical English skills • Experience with cloud-based architectures and platforms such as Kubernetes NICE TO HAVE • Experience in multithreading programming • Experience with making software for telecommunication systems • Experience with queues like RabbitMQ and Kafka • CKAD Certification WHAT DO WE OFFER ON THIS PROJECT? ITO: Cooperation based on a B2B contract and rate: 160-190 zł/h 100% remote work / Hybrid work from Kraków (1 times a week in the office) The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Antonina Pawłowska IT Research Consultant antonina.pawlowska@speedapp.pl

🏢 Summary: B2B Java Developer role focused on designing and optimizing scalable architecture for Java-based applications in a hybrid model (3 days in Krakow). The position involves working in an Agile environment on long-term projects, with responsibility for system scalability, integration, and performance testing. This role targets experienced professionals capable of managing complex Java and microservices architectures. 🗂️ Requirements: 8–10 years of experience in Java development, Strong knowledge of advanced Java concepts, Experience with Java API management, Experience in microservices architecture, Experience with database technologies, Experience designing scalable system architectures, Ability to perform system performance and validation testing, Experience working in Agile environment 📃 Skills: Java, Microservices, API, Databases, Agile 🏢 Description: We are looking for a Java Developer on behalf of our client, a well-known and fast-growing technology company offering a stable, long-term project in a modern environment. 📍 Work mode: Hybrid — 3 days from Krakow 📄 Contract: B2B Role Description Agile Way of Working Advanced Java Concepts Java API Management & Microservices Database Technology Experience (Years): 8–10 Responsibilities: Designing scalable architecture systems for Java-based applications. Identifying the hardware and software infrastructure needs to accommodate the companys architectural goals. Troubleshooting design flaws and system bottlenecks. Performing validation tests to ensure the flexibility and scalability of the Java environment. Assisting the software design team with application integration. Conducting system performance tests. Completing systems reports. Responsibility of Expectations from the Role Designing scalable architecture systems for Java-based applications. Identifying the hardware and software infrastructure needs to accommodate the companys architectural goals. Troubleshooting design flaws and system bottlenecks. Performing validation tests to ensure the flexibility and scalability of the Java environment. Assisting the software design team with application integration. Conducting system performance tests. Completing systems reports. ✅ Benefits: Work with modern technologies and international teams Long-term and stable cooperation Professional growth opportunities

🏢 Summary: Hybrid Java Developer role focused on migrating a monolithic JBoss-based system to a Domain-Driven Design architecture using Spring Boot. The position involves backend development, system modernization, database migration, and support for new React-based frontends. The role combines development and maintenance of modern backend services in a large-scale IT environment. 🗂️ Requirements: Minimum 3 years commercial experience as Java Developer, Very good knowledge of Java 21+, Experience with Spring Boot, Experience with REST API development, Practical knowledge of unit and integration testing, Knowledge of Git and developer tools 📃 Skills: Java, SpringBoot, REST, Git, JBoss, React, Sybase, DDD, JUnit 🏢 Description: Dla wiodącej niemieckiej firmy z sektora telekomunikacji i usług IT, specjalizującej się w nowoczesnych rozwiązaniach takich jak cloud computing, hosting oraz usługi internetowe, poszukujemy Java Developera. Praca hybrydowa - biuro w Warszawie, Poznaniu lub Lublinie. Zakres obowiązków Migracja logiki biznesowej z monolitu (JBoss 4) do architektury Domain-Driven Design opartej na Spring Boot Rozwój i utrzymanie backendów opartych o nowoczesne technologie Udział w projektach związanych z: budową nowych frontendów w React (Spring Boot backend), migracją logiki bazodanowej (Sybase → nowsze standardy), modernizacją istniejących systemów Wymagania (must have) Minimum 3 lata doświadczenia komercyjnego w roli Java Developera Bardzo dobra znajomość Java (21+) Doświadczenie w pracy z Spring Boot oraz REST API Praktyczna znajomość testów jednostkowych i integracyjnych Znajomość Git oraz narzędzi developerskich

🏢 Summary: The offer is for an experienced Java Developer to design, build, and maintain scalable backend systems and microservices. The role involves developing RESTful APIs, integrating with cloud services, and working with databases in a collaborative environment. The position is available fully remote or on-site in Warsaw or Gdańsk. 🗂️ Requirements: Minimum 4 years of commercial experience with Java, Strong knowledge of Spring and Spring Boot, Experience with cloud platforms (AWS, Azure, GCP or similar), Solid experience with relational or non-relational databases, Experience with RESTful API design, Experience with Git, Experience with CI/CD pipelines, Understanding of software development best practices 📃 Skills: Java, Spring, SpringBoot, AWS, Azure, GCP, PostgreSQL, MySQL, Oracle, MongoDB, Git, CI/CD, REST, Microservices 🏢 Description: About the Role We are looking for an experienced Java Developer. If you have at least 4 years of commercial experience in Java development, solid knowledge of databases, and hands-on experience with any cloud platform – we would love to hear from you. This position is available as fully remote or 100% on-site in Warsaw or Gdańsk . Responsibilities Designing, developing, and maintaining scalable backend systems using Java Building and optimizing RESTful APIs and microservices Collaborating with cross-functional teams (QA, DevOps, Product Owners, Frontend Developers) Writing clean, maintainable, and testable code Participating in code reviews and technical discussions Integrating applications with cloud-based services Working with relational and/or non-relational databases Troubleshooting, debugging, and performance optimization Contributing to architectural decisions and technical improvements Requirements Minimum 4 years of commercial experience with Java Strong knowledge of Spring / Spring Boot Experience with any cloud platform (e.g., AWS, Azure, GCP or other) Solid experience with databases (e.g., PostgreSQL, MySQL, Oracle, MongoDB, etc.) Good understanding of RESTful API design Experience with Git and CI/CD pipelines Good knowledge of software development best practices Very good command of English (min. B2+ level)

🏢 Summary: B2B role for a Senior Java Developer responsible for developing and enhancing applications and services with a strong focus on quality, performance, and reliability. The position involves designing solutions, writing unit and integration tests, and working with cloud-based and containerized environments. Hybrid work model with long-term cooperation (12+ months). 🗂️ Requirements: Minimum 5 years of commercial experience in Java, Experience with Java SE 11 or higher, Strong knowledge of Spring Boot, Strong knowledge of Spring Integration, Knowledge of relational databases, Experience with Git, Experience with Maven, Experience with Jira, Experience with Jenkins, Knowledge of SOAP, Knowledge of REST, Knowledge of XML, Knowledge of JSON, Experience with GCP, Experience with BigQuery, Experience with CloudSQL, Experience with Pub/Sub, Practical knowledge of non-relational databases, Experience with containerized applications, Experience with Anthos, Experience with Kubernetes Engine, Experience with Docker, Knowledge of Micronaut framework 📃 Skills: Java, JavaSE, SpringBoot, SpringIntegration, SQL, Git, Maven, Jira, Jenkins, SOAP, REST, XML, JSON, GCP, BigQuery, CloudSQL, PubSub, NoSQL, Anthos, Kubernetes, Docker, Micronaut 🏢 Description: Dla naszego Klienta szukamy Developera Java. Opis stanowiska: implementujesz nowe lub modyfikujesz istniejące aplikacje/serwisy tworzysz testy jednostkowe i integracyjne dla budowanych aplikacji/serwisów dbasz o wysoką jakość oprogramowania (funkcjonalność, wydajność, niezawodność) dokumentujesz zaimplementowane rozwiązania analizujesz możliwe rozwiązania bierzesz udział w pracach projektowych Wymagania: masz min. 5-letnie doświadczenie komercyjne w programowaniu w języku obiektowym Java masz doświadczenia w zakresie programowania w języku Java SE 11 (wersja 11 lub wyższa) dobrze znasz Spring Boot/Spring Integration znasz relacyjne bazy danych znasz narzędzia: Git, Maven, Jira, Jenkins znasz standardy: SOAP, REST, XML, JSON masz wykształcenie wyższe informatyczne lub pokrewne umiesz pracować w zespole doświadczenie w środowisku chmurowym GCP (w szczególności BigQuery, CloudSQL, Pub/Sub) praktyczna znajomość nierelacyjnych baz danych praktyczne doświadczenie przy budowania skonteneryzowanych aplikacji (Anthos, Kubernetes Engine, Docker) znajomość innych frameworków (np. micronaut) Oferujemy: umowa B2B współpraca ponad 12 miesięcy praca w modelu hybrydowym: 1 x w tygodniu w biurze (Warszawa, Chmielna 89) opcjonalnie: pakiet medyczny Lux-Med, myBenefit