Senior Java Developer

🏢 Summary: The offer is for a Senior Java Developer to design, develop, and maintain Java-based applications in AWS cloud environments. The role involves building microservices, integrating APIs, ensuring code quality, and resolving performance issues within Agile teams. It focuses on delivering robust, scalable cloud-native solutions using modern Java technologies. 🗂️ Requirements: Proven experience in Java development, Experience with AWS cloud services, Experience developing microservices, Experience with API integration, Knowledge of Agile methodologies, Experience with code testing and code reviews, Ability to troubleshoot and resolve performance issues 📃 Skills: Java, AWS, Spring, Hibernate, Microservices, API, Agile, DevOps 🏢 Description: We are looking for a Senior Java Developer with solid experience in Java and Cloud. The ideal candidate should have exceptional skills in developing and implementing solutions using the latest technologies. Main Responsibilities: Develop and maintain Java-based applications in cloud environments. Collaborate with multidisciplinary teams to design and implement robust solutions. Perform testing and ensure code quality. Participate in code reviews and provide constructive feedback. Identify and resolve application performance issues. Key Requirements: Proven experience in Java development. Familiarity with cloud services (AWS). Knowledge of Agile development practices. Skills in API integration and microservices. Ability to solve problems effectively. Desirable: Experience with DevOps tools. Familiarity with Java frameworks such as Spring or Hibernate. Relevant certifications in Java or Cloud.

🏢 Summary: Senior Java Developer role in an agile, international team focused on designing and building cloud-based backend and fullstack solutions. The position involves architecting scalable systems, ensuring high code quality, and contributing to CI/CD and DevOps practices. The role also includes technical leadership and collaboration with cross-functional teams to deliver secure, high-performance applications. 🗂️ Requirements: Expert knowledge of Java for backend and fullstack development, Experience architecting cloud-based SaaS solutions, Proficiency in automated testing and CI/CD pipelines, Experience with version control systems, Ability to deliver secure and scalable code, Bachelor’s degree in Computer Science, Engineering or related field with 5+ years of experience OR 9+ years of relevant industry experience 📃 Skills: Java, SaaS, CI/CD, Git, AWS, GCP, Azure, Docker, Kubernetes, TypeScript, Python 🏢 Description: About the Role: We are looking for a Senior Java Developer to join an agile, international engineering team working on cloud-based solutions serving diverse industries. As a technical leader, you will design, build, and maintain robust backend and fullstack systems, impacting both product performance and business outcomes. Must Have Expert knowledge of Java (backend/fullstack web development) Experience architecting cloud-based solutions (SaaS platforms or similar) Proficiency in automated testing, deployment pipelines, version control, and CI/CD practices Strong command of English for daily teamwork in multicultural environments Demonstrated ability to deliver secure, scalable, high-quality code Bachelor’s degree in Computer Science, Engineering, or related field with 5+ years of professional experience, OR 9+ years’ relevant industry experience (without degree) Nice to Have Exposure to other technologies (TypeScript, Python, etc.) Experience working with multiple data models and integrating acquired codebases Previous engagement in Agile/Scrum teams (sprint planning, retrospectives, hackathons) Background in industries like energy, IoT, finance, or regulated environments Familiarity with modern cloud platforms (AWS, GCP, Azure) and DevOps practices (Docker, Kubernetes) Your Profile Tech Enthusiast: Keen to learn and apply emerging technologies and best practices Analytical Thinker: Able to define requirements and design effective solutions to complex challenges Product Mindset: Understands how technical decisions influence user experience and business drivers Team Player: Works well in autonomous, distributed teams and supports collaborative engineering culture Key Responsibilities Design and develop Java-based backend and fullstack features for cloud-based applications Contribute to scalable, unified system architectures and help integrate diverse platforms and technologies Write and maintain high-performance, secure code and automated tests to ensure product quality Participate in sprint planning, code reviews, retrospectives, and technical discussions Work closely with product managers and business stakeholders to align technical development with commercial goals Mentor junior engineers and promote continuous improvement in team processes Ready for your next challenge? Send your CV detailing your experience in Java, cloud technologies, and agile teams. Tell us about your approach to system architecture and cross-team collaboration!

🏢 Summary: Senior Java Developer role focused on building, maintaining, and optimizing scalable Java applications for complex financial and enterprise systems in a hybrid Krakow setup. The position involves working with microservices architecture, REST APIs, and databases within an Agile environment. You will contribute to design, development, performance optimization, and technical reviews. 🗂️ Requirements: Minimum 6 years of Java development experience, At least 5 years of experience with Spring and Spring Boot, Strong experience with Microservices architecture, Strong knowledge of REST APIs and integration patterns, Experience with SQL and NoSQL databases, Ability to design application architecture, Experience working in Agile environments 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, SQL, NoSQL, APIs, Architecture, Agile 🏢 Description: 📍 Location: Krakow, hybrid 3 days/week Role: Senior Java Developer Role Description: We are looking for an experienced Java Developer to join technology team. You will be responsible for developing, maintaining, and optimizing Java-based applications that support complex financial systems and enterprise platforms. Key Competencies: Agile way of working and collaboration in cross-functional teams Advanced Java concepts and object-oriented design principles Java API management, RESTful services, and Microservices architecture Database technologies (SQL / NoSQL) and performance optimization Requirements: Minimum 6 years of experience in Java development Strong experience with Spring / Spring Boot and Microservices (5+ years) Good understanding of REST APIs, integration patterns, and application architecture Experience with database technologies and writing efficient queries Ability to work in a team environment and communicate effectively with technical and non-technical stakeholders Experience working in Agile delivery environments Nice-to-Have / Bonus Skills: Experience in production support and troubleshooting Participation in design and architecture reviews Exposure to cloud platforms and modern deployment pipelines Mentoring or leading technical discussions Responsibilities: Design, develop, and maintain scalable Java applications Participate in design and code reviews Troubleshoot issues and optimize system performance Collaborate with business analysts and other teams to deliver solutions Prepare technical documentation and reports as needed

🏢 Summary: Senior Java Developer role focused on designing and implementing modern, scalable backend and distributed systems within Agile teams. The position involves architectural decisions, technology selection, and ensuring high code quality, security, and reliability in cloud-based environments. 🗂️ Requirements: 7+ years of experience with Java, Experience with Apache Kafka, Practical knowledge of Kubernetes, Experience with Spring and Spring Boot, Experience with Hibernate or MyBatis, Experience with relational or NoSQL databases, Experience with at least one cloud platform: AWS, Google Cloud, Azure, or OpenShift, Experience in building scalable distributed systems, Knowledge of backend architecture and design patterns 📃 Skills: Java, Kafka, Kubernetes, Spring, SpringBoot, Hibernate, MyBatis, SQL, NoSQL, AWS, GCP, Azure, OpenShift, Scrum 🏢 Description: Poszukujemy osoby doświadczonej w roli Senior Java Developer (7y+) / Software Engineer , która dołączy do zespołów realizujących nowoczesne, skalowalne rozwiązania. Zakres obowiązków Projektowanie, architektura oraz wdrażanie nowoczesnych rozwiązań backendowych Dobór i implementacja narzędzi, frameworków oraz wzorców architektonicznych Budowanie skalowalnych i niezawodnych systemów rozproszonych Aktywne śledzenie trendów technologicznych i wdrażanie innowacyjnych rozwiązań Dzielenie się wiedzą i dobrymi praktykami w zespole oraz w organizacji Praca w zespołach Agile (Scrum), udział w planowaniu i refinementach Dbałość o jakość kodu, testy oraz bezpieczeństwo aplikacji Wymagania techniczne (Must have) Bardzo dobra znajomość Java (7y+) Doświadczenie w pracy z Apache Kafka Praktyczna znajomość Kubernetes Frameworki: Spring / Spring Boot Doświadczenie z ORM: Hibernate, MyBatis Praca z relacyjnymi i/lub NoSQL bazami danych Doświadczenie w pracy z chmurą (minimum jedna z): AWS / Google Cloud / Azure / OpenShift Mile widziane (Nice to have) Frontend: ReactJS / Redux, React Native, Angular Konteneryzacja: Docker Wyszukiwarki i silniki indeksujące: ElasticSearch, SOLR Systemy kolejkowe i message brokers Migracje i wersjonowanie schematów DB: Flyway, Liquibase

🏢 Summary: Senior Java Cloud Engineer role focused on building scalable cloud solutions across AWS, Azure, or Google Cloud using Java and DevOps practices. The position involves end-to-end ownership of cloud services, collaboration with distributed Agile teams, and maintaining CI/CD and automated testing workflows. Hybrid work with 3 days per week in the office is required. 🗂️ Requirements: 3+ years of hands-on Java experience, Experience with AWS, Azure, or Google Cloud, Experience working in distributed environments, Knowledge of Java and .NET frameworks, Understanding of cloud VM, cloud compute, and containerization, Experience with GitLab and GitLab pipelines, Strong SQL skills, Knowledge of Oracle, Knowledge of MS SQL Server, Experience working in Agile teams, Experience with automated testing and continuous integration, English proficiency level B2 or higher, Availability to work from the office 3 days per week 📃 Skills: Java, AWS, Azure, GoogleCloud, GitLab, SQL, Oracle, MSSQL, Docker, .NET, CI/CD, Agile 🏢 Description: We are looking for a Senior Java Cloud Engineer to deliver scalable cloud solutions using Java, cloud platforms, and modern DevOps practices. You will build reusable, efficient services across AWS, Azure, or Google Cloud while collaborating with distributed Agile teams and owning delivery end-to-end—apply now. A presence of 3 days per week in our office is required. Responsibilities Build and ship cloud-based solutions across AWS, Azure, or Google Cloud Operate effectively in distributed environments to enable fast-paced deliveries Collaborate with Agile teams to boost efficiency and adapt to changing requirements Maintain automated testing and continuous integration workflows Leverage new technologies to deliver modern, reusable solutions Support teammates with a focus on improving overall efficiency Own solutions and drive them through completion Communicate clearly and proactively across global teams Requirements Hands-on 3+ years of Java experience with a primary focus on build and delivery rather than pure coding Solid background in cloud-based solutions such as AWS, Azure, or Google Proven experience working effectively in distributed environments Working knowledge of Java and .NET frameworks Good understanding of Cloud based VM, Cloud compute, and Containerization Practical familiarity with GitLab and GitLab pipelines Strong SQL skills including Oracle and MS SQL Server Demonstrated ability to collaborate in Agile teams Proven expertise in automated testing and continuous integration English proficiency at B2 (Upper-Intermediate) level or higher Nice to have Knowledge of Rates and Credit bonds and derivatives Familiarity with Microsoft Azure EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Experienced Java Developer role focused on building, testing, deploying, and maintaining scalable enterprise backend applications. The position involves developing Java/Spring Boot microservices and REST APIs, working with databases, CI/CD practices, performance optimization, and secure, reliable delivery. 🗂️ Requirements: 7+ years of Java application development experience, Core Java expertise (Java 8, 11, or 17), Spring Boot and Spring MVC expertise, Microservices architecture experience, RESTful web services experience, Hibernate/JPA experience, Relational database experience, Git version control proficiency, Maven or Gradle experience, JUnit and Mockito unit-testing experience, Understanding of design patterns and object-oriented programming principles 📃 Skills: Java, Spring, SpringBoot, SpringMVC, Microservices, REST, Hibernate, JPA, SQLServer, Oracle, MySQL, PostgreSQL, Git, Maven, Gradle, JUnit, Mockito, CI/CD, DevOps 🏢 Description: We are seeking an experienced Java Developer with strong expertise in designing, developing, and maintaining enterprise-grade applications. The ideal candidate should have hands-on experience in Core Java, Spring Boot, Microservices, REST APIs, and database technologies , along with a solid understanding of software development best practices. Key Responsibilities Design, develop, test, and deploy scalable Java-based applications. Build and maintain RESTful APIs and Microservices. Develop backend services using Java, Spring Boot, and related frameworks. Collaborate with business analysts, architects, and development teams to understand requirements. Write clean, maintainable, and efficient code following coding standards. Troubleshoot, debug, and optimize application performance. Participate in code reviews and ensure high-quality deliverables. Work with CI/CD pipelines and DevOps practices for application deployment. Ensure application security, reliability, and scalability. Required Skills 7+ years of experience in Java application development. Strong expertise in: Core Java (Java 8/11/17) Spring Boot Spring MVC Microservices Architecture RESTful Web Services Hibernate/JPA Experience with relational databases such as SQL-Server, Oracle, MySQL, or PostgreSQL. Proficiency in Git and version control systems. Knowledge of Maven/Gradle build tools. Experience with unit testing frameworks like JUnit and Mockito. Understanding of Design patterns and object-oriented programming principles.

🏢 Summary: Senior Java Developer role focused on designing and implementing enterprise-grade backend solutions using modern architecture principles. The position emphasizes high code quality, performance, security, and collaboration within a distributed team. The role involves working with Java 17+, Spring ecosystem, databases, and event-driven systems. 🗂️ Requirements: Minimum 5 years of commercial software development experience, Very good knowledge of Java 17+, Strong understanding of object-oriented design patterns, Experience with Spring MVC and Spring Data, Experience with Apache Kafka, Ability to design relational and non-relational databases (MS SQL, Oracle, Elasticsearch, Redis), Knowledge of software engineering best practices, English proficiency for technical documentation, Ability to work effectively in a distributed team 📃 Skills: Java, Spring, SpringMVC, SpringData, Kafka, MSSQL, Oracle, Elasticsearch, Redis, OOP, UML, Docker, Kubernetes, Azure, JavaScript, React, Python 🏢 Description: We are looking for an experienced Senior Java Developer with at least 5 years of commercial experience to join a team working on enterprise-grade backend solutions. The role focuses on designing and implementing software in a modern architecture, with a strong emphasis on code quality, performance, security, and effective collaboration within a distributed team. Responsibilities Design and implement software using hexagonal architecture. Develop backend solutions using Java 17+ and the Spring ecosystem. Ensure high code quality and compliance with agreed development standards. Analyse system performance, security, and stability, and propose improvements. Design and optimise data structures for relational and non-relational databases. Collaborate with a distributed team, participate in technical analysis, code reviews, and solution design. Identify technical challenges and propose improvements to architecture and implementation. Requirements Minimum 5 years of commercial software development experience. Very good knowledge of Java 17+. Strong understanding of object-oriented design patterns and software engineering best practices. Experience with the Spring stack, especially Spring MVC and Spring Data. Knowledge of Apache Kafka. Ability to design databases: relational: MS SQL, Oracle, non-relational: Elasticsearch, Redis. English skills sufficient to work with technical documentation. Strong analytical and creative problem-solving skills. Excellent communication skills and ability to work effectively in a distributed team. Nice to have Knowledge of scripting/frontend technologies such as JavaScript, React, Python. Experience working in an Azure cloud environment. Familiarity with Kubernetes and Docker. Ability to design system architecture and prepare High-Level Design (HLD) documentation. Knowledge of UML and flow diagrams.

🏢 Summary: Senior Java Developer role focused on building and maintaining scalable microservices and cloud-based digital products in the OTT/ECommerce industry within an Agile environment. The position involves backend development, architectural contributions, CI/CD support, and collaboration with cross-functional teams using modern Java and cloud technologies. Hybrid or remote work model based in Warszawa. 🗂️ Requirements: 4+ years of Java development experience, Java 8-25, Multithreading, Immutability, Design patterns, Spring Boot, Spring MVC, WebFlux, MyBatis, TestContainers, SQL, NoSQL databases, Oracle, PostgreSQL, MongoDB, Redis, Kafka, Microservices architecture, RESTful APIs, Kubernetes, Docker, AWS, JUnit, Mockito, Spock, Jenkins, GitLab, Unix/Linux scripting, Polish language proficiency, Communicative English, Legal right to work in the EU 📃 Skills: Java, Spring, WebFlux, MyBatis, TestContainers, SQL, Oracle, PostgreSQL, MongoDB, Redis, Kafka, REST, Kubernetes, Docker, AWS, JUnit, Mockito, Spock, Jenkins, GitLab, Unix, Linux, SCRUM, Confluence, Git 🏢 Description: Empower digital transformation — craft scalable solutions with Java and cloud innovation! Warszawa-based opportunity with hybrid/ remote work model. As a Senior Java Developer , you will be working for our client, a leading player in the OTT/ECommerce industry, focused on delivering cutting-edge digital products within a dynamic and collaborative environment. Be part of a team that drives innovation, shapes future-ready architectures, and elevates user experiences through advanced microservices and cloud technologies. Your main responsibilities: Develop and maintain robust microservices using Java 8-25, ensuring high-quality code and optimal performance. Collaborate with cross-functional teams including Frontend Developers and Test Engineers within an Agile Nexus SCRUM framework. Conduct code reviews, contribute to architectural decisions, and mentor junior team members. Design, implement, and optimize RESTful architecture, utilizing tools like Kubernetes, Docker, and SOA principles. Support CI/CD pipelines and manage version control with Git, Jenkins, and related tools. Write comprehensive technical documentation in Confluence and contribute to knowledge sharing. Participate in technical consultations, problem-solving, and continuous improvement initiatives. Ensure application security following OWASP standards and best practices. You're ideal for this role if you have: At least 4 years of professional experience in Java development. Strong expertise in Java 8-25, multithreading, immutability, and design patterns. Experience with Spring Boot, Spring MVC, WebFlux, MyBatis, and TestContainers. Solid knowledge of SQL and NoSQL databases such as Oracle, PostgreSQL, MongoDB, Redis, and messaging systems like Kafka. Familiarity with microservices architecture, RESTful APIs, Kubernetes, Docker, and cloud services (AWS). Practical understanding of testing frameworks like JUnit, Mockito, and Spock. Experience with version control, CI/CD tools (Jenkins, GitLab), and scripting in Unix/Linux environments. Good command of the Polish language and communicative English skills. Ability to work independently with strong analytical and problem-solving skills. It is a strong plus if you have: Front-end skills (HTML, CSS, JavaScript, Angular/React/Vue.js). Certifications in AWS or other cloud platforms. Knowledge of DevOps practices and automation tools. Eligibility to work in the European Union: Only candidates with an existing legal right to work in the EU will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior Java Developer contract for a Life & Pension client, running onsite from September to December 2026 with potential extension. The role focuses on building and operating scalable, cloud-native Java backend services on Azure, with strong automation, infrastructure, and CI/CD practices. 🗂️ Requirements: 5+ years of enterprise Java application development, Spring Boot backend services and APIs, REST integration design and implementation, Microsoft Azure and cloud-native architecture, Infrastructure as Code experience, Cloud application development, deployment and operations, Docker containerization, Git, Maven and CI/CD practices, Microsoft SQL Server and relational databases, Flyway migration scripts, Azure security, monitoring and operational practices, Analytical problem-solving and business-to-technical translation, Agile team collaboration, Written and spoken English 📃 Skills: Java, SpringBoot, REST, Azure, IaC, Docker, Git, Maven, CI/CD, SQLServer, Flyway, Terraform, SOAP 🏢 Description: Our client in the Life & Pension industry is looking for a Senior Java Developer to join them onsite September - December 2026 with the possibility of extension. The ideal candidate combines strong software engineering skills with cloud expertise and a passion for automation, platform engineering, and modern development practices. Key requirements Minimum 5 years of hands-on experience developing enterprise applications in Java Strong experience with Spring Boot and building scalable backend services and APIs Proven experience designing and implementing REST-based integrations; experience with SOAP services is an advantage Solid experience working with Microsoft Azure and cloud-native architectures Strong experience with Infrastructure as Code (IaC); Terraform experience is highly desirable Experience developing, deploying, and operating applications in cloud environments Experience with Docker and containerized applications Proficiency with Git, Maven, and modern CI/CD practices Experience working with Microsoft SQL Server and relational databases Experience creating and maintaining Flyway migration scripts Good understanding of Azure services, cloud security, monitoring, and operational best practices Strong analytical and problem-solving skills with the ability to translate business requirements into technical solutions Experience working in Agile development teams and collaborating with architects, developers, business stakeholders, and suppliers Strong communication skills in English, both written and spoken. Nice-to-have Experience from pension, insurance, banking, or other regulated financial sectors Experience with event-driven architectures and integration platforms Experience mentoring other developers and driving technical improvements Experience working in large enterprise environments with high availability, security, and compliance requirements. Start date: 01.09.2026 End date: 31.12.2026 with possibility of extension Location: Copenhagen Workload: 100%

🏢 Summary: The role involves designing, developing, testing, and maintaining complex Java-based systems with a focus on building new functionalities and supporting existing components. You will work with modern cloud and container technologies, contribute to architectural decisions, and ensure high code quality in an event-driven environment. The position includes active participation in Agile processes and close collaboration with architects and cross-functional teams. 🗂️ Requirements: Proficient in Java 17+, Experience with Spring Framework, Experience with Hibernate, Knowledge of SQL, Experience with Oracle databases, Experience with JUnit or similar testing frameworks, Experience with Docker, Experience with OpenShift, Experience with AWS or Azure, Experience with event-driven systems, Practical experience with Kafka 📃 Skills: Java, Spring, Hibernate, SQL, Oracle, JUnit, Docker, OpenShift, AWS, Azure, Kafka 🏢 Description: Jako Senior Java Developer będziesz odpowiedzialny/a za: Projektowanie, rozwój, testowanie i debugowanie nowych funkcjonalności w złożonym systemie Rozwijanie oraz utrzymanie istniejących komponentów Wsparcie architektów w budowaniu długoterminowej wizji technologicznej Tworzenie dokumentacji technicznej i prototypów Analizę problemów w środowiskach developerskich i produkcyjnych Przekładanie wymagań biznesowych na rozwiązania techniczne Dbanie o jakość kodu i standardy programistyczne Udział w ceremoniach Agile (planowanie, demo) Wymagania (must-have) Bardzo dobra znajomość Java (min. 17) Doświadczenie z Spring Framework, Hibernate Znajomość SQL / Oracle Doświadczenie z testami ( JUnit lub podobne ) Znajomość konteneryzacji ( Docker, OpenShift ) Doświadczenie z chmurą ( AWS lub Azure ) Praca z systemami event-driven ( Kafka mile widziana jako must praktyczny ) Bardzo dobra znajomość języka angielskiego (B2+) Umiejętność analitycznego myślenia i rozwiązywania problemów Dobra organizacja pracy i zarządzanie czasem Wysokie kompetencje interpersonalne Mile widziane Znajomość ElasticSearch / Solr Doświadczenie z architekturą mikroserwisów Praca z systemami rozproszonymi Migracje monolit → mikroserwisy Doświadczenie w metodykach Agile Co oferujemy Pracę nad zaawansowanym produktem o realnym wpływie na bezpieczeństwo lotów Międzynarodowe środowisko i współpracę z ekspertami Dużą autonomię i wpływ na rozwój systemu Hybrydowy model pracy (Kraków) Możliwość rozwoju w kierunku architektury i systemów rozproszonych