Junior Java Developer

🏢 Summary: Hybrid Java development role focused on building and maintaining systems that process high volumes of real-time data. The role includes delivering new functionality, database work, testing, performance validation, code reviews, and deployment preparation, with only 1–2 office days per month in Warsaw. 🗂️ Requirements: Commercial Java development experience, Experience with high-volume real-time data processing systems, Hands-on Apache Kafka experience, Unit and integration testing experience, Knowledge of relational databases, Understanding of software development best practices and quality standards 📃 Skills: Java, Kafka, Databases, Testing, Performance 🏢 Description: We are looking for a Java Developer to join a project focused on the development and maintenance of systems that process large volumes of real-time data. Responsibilities • Preparing and configuring development environments. • Developing and implementing new functionalities. • Creating and modifying database structures. • Designing and executing unit and integration tests. • Developing and performing performance tests. • Ensuring that implemented changes comply with system architecture and quality standards. • Participating in code reviews and quality assurance activities. • Preparing solutions for deployment, including code repository management, configuration updates, and deployment documentation. Requirements • Commercial experience in Java development. • Experience working with systems that process large volumes of real-time data. • Hands-on experience with Apache Kafka. • Experience creating and executing unit and integration tests. • Knowledge of relational databases. • Understanding of software development best practices and quality standards. Nice to Have • Knowledge of the Java Swing library. • Experience developing and maintaining desktop applications based on Java Swing. What We Offer • Hybrid work model with only 1–2 days per month in the Warsaw office. • Opportunity to work on modern, real-time data processing systems. • Long-term cooperation in a stable project environment. • Collaboration with experienced professionals and opportunities for professional growth.

🏢 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: Develop and maintain high-performance Java solutions for trading data, trade booking, and control systems in a hybrid Warsaw role. The position focuses on platform scalability, dashboards, system integrations, performance optimization, AI-enabled development, and AWS cloud migration. 🗂️ Requirements: 5+ years of commercial Java experience, Java 21 experience, C++ or Python familiarity, Kafka experience, GitLab experience, Monitoring tools experience, Prometheus and SRE principles knowledge, Hazelcast, MongoDB, SingleStore, or Spanner database experience, Java framework experience, Strong written and verbal communication skills 📃 Skills: Java, C++, Python, Kafka, GitLab, Prometheus, Hazelcast, MongoDB, SingleStore, Spanner, Boltweb, Spring, AWS 🏢 Description: You will: - Develop and maintain scalable, high-performance solutions for a trading data platform and trade booking/control systems. - Scale the platform and build dashboards to increase platform usage. - Collaborate with stakeholders, integrate systems, and optimize performance. - Work with AI-driven development tools and AI agents. - Contribute to the platform's move to the cloud (AWS). You bring: - 5+ years of commercial Java experience (Java 21, moving to Java 25). - Familiarity with other languages such as C++ and Python. - Experience with Kafka, GitLab, and monitoring tools (Prometheus/SRE principles). - Database experience with Hazelcast, MongoDB, SingleStore, and Spanner. - Experience with Java frameworks (in-house Boltweb; Spring experience beneficial). - Strong verbal and written communication skills.

🏢 Summary: Java Developer role focused on designing and maintaining scalable microservices-based backend systems using Spring technologies. The position involves building high-performance RESTful services, improving existing systems, and collaborating closely with cross-functional teams in a hybrid work model. 🗂️ Requirements: Minimum 2 years of experience with Java, Hands-on experience with microservices architecture, Experience with Spring and Spring Boot, Knowledge of REST APIs and integration patterns, Ability to work onsite in Warsaw 2 days per week 📃 Skills: Java, Microservices, Spring, SpringBoot, REST, Kubernetes, AWS, Azure, GCP, Kafka, RabbitMQ 🏢 Description: We’re looking for a Java Developers with solid experience in microservices architecture to join our growing team in Łódź. If you enjoy building scalable backend systems and like collaborating face-to-face a couple of days a week, this role is for you. Responsibilities Design, develop, and maintain Java-based microservices Build scalable, high-performance backend solutions Collaborate with product owners, architects, and other developers Write clean, testable, and well-documented code Participate in code reviews and technical discussions Support and improve existing systems Requirements Experience with Java minimum 2 years + Hands-on experience with microservices architecture Experience with Spring / Spring Boot Knowledge of REST APIs and integration patterns Ability to work onsite in Warsaw 2 days per week Nice to Have Experience with Kubernetes Cloud experience (AWS, Azure, or GCP) Knowledge of messaging systems (Kafka, RabbitMQ) Experience working in Agile/Scrum teams What We Offer Hybrid work model (2 days onsite in Warsaw) Competitive salary and benefits Modern tech stack and real impact on products Friendly, collaborative team culture Opportunities for learning and professional growth

🏢 Summary: Long-term B2B contract for a senior Java Developer to design and optimize scalable Java-based systems in an Agile environment. The role focuses on architecture design, microservices, API management, and performance optimization within a modern technology stack. Hybrid work model with 3 days onsite in Krakow. 🗂️ Requirements: 8–10 years of experience in Java development, Advanced knowledge of Java and JVM concepts, Experience with microservices architecture, Experience with API management, Experience with database technologies, Experience designing scalable system architectures, Ability to perform performance and scalability testing, Experience with application integration, Experience working in Agile environment 📃 Skills: Java, JVM, Microservices, API, Databases, SQL, Architecture, Scalability, Performance, Integration, 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 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Hybrid Java Backend Developer role focused on designing and delivering scalable, production-grade backend services using microservices and cloud-native architectures. The position involves full lifecycle ownership, from requirements and development to deployment and production support, with strong emphasis on system quality, security, and reliability. Work is primarily backend engineering in a hybrid model (3 days onsite in Wrocław). 🗂️ Requirements: 5+ years Java backend development experience, Strong experience with Spring framework, Experience with microservices architecture, Experience with cloud-native architectures, Knowledge of REST APIs and integration patterns, Understanding of system design principles, Experience working in UNIX environments, Scripting skills, Fluent English 📃 Skills: Java, Spring, Microservices, Azure, AKS, REST, UNIX, Scripting 🏢 Description: Java Backend Developer (Hybrid – Wrocław) We’re looking for a Java Backend Developer who enjoys building solid, scalable systems and wants to work on real, production-grade challenges, not just maintenance, but meaningful engineering. This is a hybrid role: 3 days in our Wrocław office, 2 days remote. What you’ll be doing: You’ll be designing and developing backend services that power digital products used by clients and internal teams. Expect real ownership across the full lifecycle - from shaping requirements, through development, testing, deployment, and keeping things running smoothly in production. You’ll work on improving system quality, security, and reliability, making sure our platforms are not just functional but robust and observable. That means helping to spot issues early, digging into root causes, and fixing problems properly - not just patching them. You’ll also contribute beyond code: sharing knowledge, supporting colleagues, and helping us grow a strong engineering culture. What we’re looking for: 5+ years of experience in Java/Spring backend development (ideally in financial services) Strong experience with microservices and cloud-native architectures (Azure AKS is a plus) Solid understanding of REST APIs, integration patterns, and system design Comfortable working in UNIX environments and with scripting Strong communication skills and fluent English Curiosity for new technologies and a mindset focused on long-term, sustainable solutions If you like solving complex problems, taking ownership, and building systems that actually matter in production - we’d like to hear from you.

🏢 Summary: The offer is for an experienced Java Developer to design, develop, and maintain scalable backend systems and microservices in an international, hybrid work environment. The role focuses on building high-performance, secure enterprise applications, contributing to architecture decisions, and supporting CI/CD and DevOps practices. It is suited for engineers experienced in modern Java ecosystems and distributed systems. 🗂️ Requirements: Commercial experience in Java software development, Strong knowledge of Java and Spring Boot, Experience building RESTful APIs and microservices, Knowledge of Spring Framework, Hibernate, and JPA, Experience with relational databases (Oracle or PostgreSQL), Understanding of software design principles and application architecture, Experience with Git, Familiarity with Docker and CI/CD tools, Experience working in Agile (Scrum/Kanban) environments 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, REST, Microservices, Oracle, PostgreSQL, Git, Docker, CICD, Agile, Scrum, Kanban 🏢 Description: 📍 Location: Kraków (Hybrid – 6–8 days per month in the office) 📄 Contract Type: B2B / Employment Contract 🌍 International Environment About the Role We are looking for an experienced Java Developer to join a dynamic team delivering scalable, enterprise-grade solutions. You will be involved in designing, developing, and maintaining modern backend systems, contributing to architecture decisions, and building robust applications that support critical business processes. This is an excellent opportunity for engineers who enjoy working with modern technologies, microservices, cloud-ready solutions, and high-performance distributed systems. Responsibilities Design, develop, and maintain scalable backend applications and microservices using Java technologies. Build and enhance secure, reliable, and high-performing APIs. Participate in system architecture and technical design discussions. Develop high-quality, maintainable, and well-tested code. Collaborate with cross-functional teams to deliver business-critical solutions. Troubleshoot, analyze, and resolve application and production issues. Perform code reviews and contribute to engineering best practices. Support application performance, scalability, and reliability initiatives. Participate in Agile ceremonies, including sprint planning, refinement, and retrospectives. Contribute to CI/CD processes and DevOps practices. Requirements Commercial experience in software development using Java. Strong knowledge of Java and Spring Boot. Experience building RESTful APIs and microservice-based applications. Good understanding of Spring Framework, Hibernate, and JPA. Experience working with relational databases such as Oracle or PostgreSQL. Familiarity with NoSQL databases is a plus. Understanding of software design principles and application architecture. Experience with Git and modern software development practices. Familiarity with Docker and CI/CD tools. Experience working in Agile environments (Scrum/Kanban). Strong analytical and problem-solving skills. Good communication skills and ability to work collaboratively within a team. Nice to Have Experience with cloud platforms such as AWS, Azure, or GCP. Knowledge of Kubernetes and container orchestration. Exposure to frontend technologies such as React, Angular, or JavaScript. Experience with event-driven architectures and messaging systems. Understanding of security best practices in software development. What We Offer Opportunity to work on modern, large-scale enterprise solutions. Long-term projects in an international environment. Flexible hybrid working model. Exposure to modern technologies, cloud solutions, and microservices architecture. Professional growth opportunities and access to technical challenges. Collaborative culture focused on quality, innovation, and continuous improvement. Employment contract or B2B cooperation model.

🏢 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: Hybrid Java Developer role focused on building and maintaining enterprise applications supporting critical business operations and next-generation management platforms. The position involves developing streaming applications, collaborating in Agile Scrum teams, applying BDD and CI/CD practices, and supporting global IT operations. Candidates will work with Java, Spring technologies, and Apache Kafka in a fast-paced international environment. 🗂️ Requirements: 2+ years of Java programming experience, Knowledge of Spring Framework, Knowledge of Spring Boot, Knowledge of Apache Kafka, Experience with Agile methodologies, Understanding of Scrum, Awareness of TDD, Awareness of BDD, Familiarity with CI/CD practices, Ability to refactor and improve legacy code, English proficiency at B2 level 📃 Skills: Java, Spring, SpringBoot, Kafka, Flink, Maven, Gradle, SQL, Unix, Scrum, CI/CD, BDD, TDD 🏢 Description: We are looking for a passionate Java Developer to join a global team that develops and maintains a suite of enterprise applications. The system supports critical business operations and serves as the foundation for a next-generation management platform. Team members work closely with operations teams and business analysts to provide global solutions for varied business requirements, with a strong focus on software craftsmanship, quality, and automation. This role offers a hybrid model, with 3 days per week working from the client's office in Krakow. Responsibilities Develop new features and maintain the existing codebase Build streaming applications with Apache Flink Write unit, integration, and behavior tests Cooperate within a successful scrum development team built on mutual respect Collaborate to refine user requirements through behavior-driven development (BDD) Partner with other global IT teams Provide level 3 support, assisting the production operations team in the rollout and support-related matters Requirements 2+ years of experience in Java programming Background in the Spring stack (Spring Framework, Spring Boot) Knowledge of Apache Kafka Showcase of clean coding and refactoring skills with great problem-solving ability Hands-on experience with Agile methodologies, especially Scrum Awareness of test- and behavior-driven development Familiarity with CI/CD practices Capability to improve older code bases, as well as apply modern best practices to new projects Proactive mindset, comfortable working in dynamic environments with fast-paced deliveries and changing requirements Strong written and verbal communication skills in English (B2 level), and the desire to work as part of a global team Nice to have Expertise in Apache Flink Proficiency in build tools (Apache Maven, Gradle) Skills in SQL databases Hands-on experience with Unix 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: Java Developer role focused on building and enhancing enterprise-grade server-side systems and microservices within Scrum teams. The position involves defining technical architecture, improving system scalability and maintainability, and collaborating with global stakeholders. Hybrid work with 3 days per week in the office is required. 🗂️ Requirements: 2+ years of professional software development experience, Strong expertise in Java, Experience with Spring Boot, Experience designing and implementing Microservices, Knowledge of Kafka, Experience building distributed systems, Strong Oracle SQL skills, Experience with unit and integration testing, English proficiency at B2 level or higher 📃 Skills: Java, Spring, SpringBoot, Microservices, Kafka, Oracle, SQL, JUnit, Mockito, Azure 🏢 Description: We are seeking a Java Developer to join our team of software delivery experts and contribute to the evolution and enhancement of one of our key components. Working within the Scrum framework, you will become an integral part of one of our component teams, where you will help to define the component's architecture and bring your deep expertise in cutting-edge technologies to significantly enhance both performance and usability. You will collaborate closely with delivery teams based in Krakow as well as business stakeholders across the globe. A presence of 3 days per week in our office is required. Responsibilities Participate actively as a full member of a Scrum team, attending all ceremonies and supporting ongoing enhancements to team workflows Generate tangible business outcomes by designing and implementing reliable, scalable core Java server-side systems Define and shape high-level technical architecture for epics, making sure each solution supports long-term system objectives Write clean, well-tested code with strong automation coverage, serving as a role model and establishing quality standards across the team Evaluate design proposals submitted by colleagues and verify that delivered code meets the required quality benchmarks Drive continuous refactoring efforts on the existing codebase to preserve clarity, maintainability, and technical health Perform thorough code reviews, offering valuable feedback and guiding less experienced developers in their professional growth Requirements Minimum of 2 years of professional, hands-on experience in software development Deep expertise in Java for the creation of enterprise-level server-side applications Substantial practical knowledge of Spring Boot for crafting contemporary, production-ready microservices Demonstrated background in designing and implementing Microservices solutions, including the use of Kafka for event streaming and the construction of distributed systems with an emphasis on scalability and resiliency Solid command of Oracle SQL, with the capability to author advanced queries, stored procedures, views, and joins Strong background in software testing methodologies, including the creation of dependable unit and integration tests Outstanding verbal and written communication abilities in English (B2+ level or above) Nice to have Familiarity with the Trade lifecycle domain and a general understanding of how financial market processes operate Practical exposure to MS Azure cloud services, including Azure Web Apps and Azure Functions, for the deployment and operation of cloud-hosted applications Working experience with JUnit and Mockito, combined with knowledge of test automation strategies and robust unit testing techniques 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.