Backend Software Engineer (Java | Camunda | Cloud-Native)

🏢 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: Junior Backend Java Developer role focused on building and maintaining scalable backend systems using modern Java and Spring technologies in an international, Agile environment. The position involves developing secure, high-quality applications and collaborating within a hybrid work model. 🗂️ Requirements: Java 17+, Spring / Spring Boot / Spring Security, Maven, SQL, Git (GitHub, CI/CD basics), Experience with unit testing, English B2/C1, Around 2 years of commercial experience, Degree in Computer Science or related field 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Maven, SQL, Git, GitHub, CICD, UnitTesting 🏢 Description: Junior Backend Java Developer Location: Warsaw, Poland (hybrid – 2 days/week in the office) About the Role We’re looking for a Junior Backend Java Developer to join a team building scalable, modern backend systems for international products. You’ll work in a collaborative environment with a strong focus on learning, ownership, and quality. Responsibilities Develop and maintain backend applications using Java 17+ and Spring Boot Ensure performance, scalability, and security of solutions Work with SQL databases (e.g. PostgreSQL) Support deployments using Docker, Kubernetes, and Helm Use Bash/Shell for automation tasks Collaborate in Agile (Scrum) teams and communicate in English Requirements Java 17+, Spring / Spring Boot / Spring Security Maven, SQL, Git (GitHub, CI/CD basics) Experience with unit testing English B2/C1 Around 2 years of commercial experience Nice to Have PostgreSQL, Hibernate/JPA Kubernetes, Helm Kafka, microservices Bash/Shell or Python CI/CD tools, JIRA Monitoring tools (Grafana, Prometheus) Security basics (OWASP) Qualifications Degree in Computer Science or related field

🏢 Summary: Senior Backend Java Developer role focused on designing and building scalable, high-performance backend systems using Java and Spring Boot in a cloud-native environment. The position involves developing enterprise-grade solutions, ensuring performance and security, and supporting containerized deployments. The role requires strong experience with modern backend technologies and infrastructure tools. 🗂️ Requirements: 8+ years of backend development experience, Strong experience with Java 17+, Strong experience with Spring and Spring Boot, Experience with Spring Security, Experience with SQL databases, Experience with Maven, Experience with Git and CI/CD pipelines, Experience with testing frameworks (JUnit, AssertJ, Hamcrest), Experience with Kubernetes and Helm, Experience with Bash or Shell scripting, Experience with cloud-native applications, Experience in enterprise environments 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, SQL, Maven, Git, CICD, JUnit, AssertJ, Hamcrest, Kubernetes, Helm, Bash, Shell, Docker, PostgreSQL 🏢 Description: Senior Backend Java Developer Location: Warsaw, Poland (hybrid – 2 days/week in the office) About the Role We’re looking for a Senior Backend Java Developer to design and build scalable, high-performance backend systems for international products. You’ll work in a collaborative environment, contribute to architectural decisions, and mentor other engineers. Responsibilities Design, develop, and maintain backend systems using Java 17+ and Spring Boot Ensure scalability, performance, and security of solutions Work with SQL databases (e.g. PostgreSQL) Support deployments using Docker, Kubernetes, and Helm Use Bash/Shell for automation and integration tasks Lead technical discussions and mentor team members Collaborate in Agile (Scrum) teams and communicate in English Requirements Strong experience with Java 17+, Spring / Spring Boot / Spring Security Experience with cloud-native applications Maven, SQL, Git (GitHub, CI/CD) Testing frameworks (JUnit, AssertJ, Hamcrest) Kubernetes, Helm Bash/Shell scripting English B2/C1 Experience in enterprise environments 8+ years of backend development experience Nice to Have PostgreSQL, Hibernate/JPA Kafka, event-driven architecture Microservices architecture Python Knowledge of C or Go CI/CD tools, JIRA Monitoring tools (Grafana, Prometheus, Kibana) Security best practices (OWASP) Qualifications Degree in Computer Science or related field

🏢 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: Junior Backend Java Developer role focused on building and maintaining backend features for a large-scale, customer-facing application in a cloud-oriented environment. The position involves developing, integrating, and optimizing services, ensuring high code quality, and supporting system enhancements using modern development tools and practices. The role includes working with RESTful services, databases, and distributed systems within a collaborative engineering team. 🗂️ Requirements: Hands-on experience with Java 8, Java 11 or Kotlin, Working knowledge of SQL databases, Basic knowledge of HTML and CSS, Familiarity with JavaScript, Understanding of client-server architecture, Knowledge of HTTP and RESTful APIs, Knowledge of dependency injection, Experience with API integration, Strong understanding of object-oriented programming, Experience developing business applications with data storage and integration, Experience integrating third-party software solutions, Understanding of data modeling and system integration, Knowledge of unit testing 📃 Skills: Java, Kotlin, SQL, HTML, CSS, JavaScript, HTTP, REST, OOP, API, JUnit 🏢 Description: Are you a passionate Junior Backend Java Developer eager to make an impact? Join EPAM’s dynamic engineering team, where you’ll help create, maintain, and enhance the backend of a large-scale application for a global client in a fast-paced, collaborative environment. You’ll work with modern technologies and contribute to innovative solutions that drive business value for our client’s digital ecosystem. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Develop and maintain backend features for a customer-facing application, ensuring seamless integration with multiple service providers Design, implement, and support software patches and new features Write, review, and maintain technical documentation, including design and development artifacts Create applications using standard and cloud-based development tools Test, debug, and update programs to ensure high quality and performance Analyze, review, and modify code to improve efficiency and meet evolving requirements Investigate, document, and resolve technical issues Collaborate with internal teams to define and implement solutions that enhance the provider and customer experience Participate in code refactoring, technical debt reduction, and recommend improvements with a product mindset Maintain the highest standards of development practices, including technical design, solution development, system configuration, test documentation, and clean, modular code Requirements Hands-on experience with Java 8, Java 11, or Kotlin Working knowledge of SQL databases Basic understanding of HTML and CSS Familiarity with JavaScript, especially for debugging client-side request-response flows Experience with client-server architecture, HTTP, and RESTful APIs Knowledge of dependency injection, services, and API integration Strong technical problem-solving skills Solid foundation in object-oriented programming Experience developing business applications, including data storage and application integration Experience implementing, configuring, and integrating third-party software solutions Understanding of information management, data modeling, system integration, and development methodologies (including unit testing) Advanced written and verbal communication skills in English Quick learner with a proactive attitude Nice to have Experience with protocol buffers and gRPC Familiarity with all phases of the Software Development Life Cycle (analyze, design, build, test, implement, support) Experience working on Linux environments We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively.

🏢 Summary: Junior Backend Java Developer role focused on developing and maintaining backend features for a large-scale, customer-facing application in a cloud-oriented environment. The position involves building, integrating, and optimizing services using modern backend and cloud technologies while ensuring high code quality and performance. It offers hands-on experience with enterprise systems and collaboration in an international engineering team. 🗂️ Requirements: Hands-on experience with Java 8, Java 11, or Kotlin, Working knowledge of SQL databases, Basic understanding of HTML and CSS, Familiarity with JavaScript for debugging purposes, Knowledge of client-server architecture, HTTP, and RESTful APIs, Understanding of dependency injection and API integration, Strong object-oriented programming foundation, Experience developing business applications with data storage and integration, Experience integrating third-party software solutions, Understanding of data modeling, system integration, and unit testing, Advanced English communication skills 📃 Skills: Java, Kotlin, SQL, HTML, CSS, JavaScript, HTTP, REST, OOP, Linux 🏢 Description: Are you a passionate Junior Backend Java Developer eager to make an impact? Join EPAM’s dynamic engineering team, where you’ll help create, maintain, and enhance the backend of a large-scale application for a global client in a fast-paced, collaborative environment. You’ll work with modern technologies and contribute to innovative solutions that drive business value for our client’s digital ecosystem. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków, Poland. Ready to launch your career in cloud engineering? Apply now and join our global team! Responsibilities Develop and maintain backend features for a customer-facing application, ensuring seamless integration with multiple service providers Design, implement, and support software patches and new features Write, review, and maintain technical documentation, including design and development artifacts Create applications using standard and cloud-based development tools Test, debug, and update programs to ensure high quality and performance Analyze, review, and modify code to improve efficiency and meet evolving requirements Investigate, document, and resolve technical issues Collaborate with internal teams to define and implement solutions that enhance the provider and customer experience Participate in code refactoring, technical debt reduction, and recommend improvements with a product mindset Maintain the highest standards of development practices, including technical design, solution development, system configuration, test documentation, and clean, modular code Requirements Hands-on experience with Java 8, Java 11, or Kotlin Working knowledge of SQL databases Basic understanding of HTML and CSS Familiarity with JavaScript, especially for debugging client-side request-response flows Experience with client-server architecture, HTTP, and RESTful APIs Knowledge of dependency injection, services, and API integration Strong technical problem-solving skills Solid foundation in object-oriented programming Experience developing business applications, including data storage and application integration Experience implementing, configuring, and integrating third-party software solutions Understanding of information management, data modeling, system integration, and development methodologies (including unit testing) Advanced written and verbal communication skills in English Quick learner with a proactive attitude Nice to have Experience with protocol buffers and gRPC Familiarity with all phases of the Software Development Life Cycle (analyze, design, build, test, implement, support) Experience working on Linux environments We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively.

🏢 Summary: B2B contract for a Mid to Mid-Senior Java Backend Developer to work in a hybrid model on a high-impact financial/payments project. The role focuses on designing and developing microservices-based backend solutions using Java and Spring technologies, contributing to architecture, implementation, and continuous improvement within Agile teams. 🗂️ Requirements: 3+ years of professional experience in Java backend development, Proficiency in Java 8+ and Spring Boot, Experience building and consuming REST APIs, Experience designing and developing microservices, Knowledge of HTTPS, SFTP, REST and SOAP protocols, Experience with Git/GitHub, GitHub Actions, Maven and Jenkins, Experience with MySQL and SQL databases, Familiarity with Linux operating systems, Understanding of containerization, Knowledge of Agile methodologies 📃 Skills: Java, Spring, SpringBoot, REST, SOAP, HTTPS, SFTP, Microservices, Kafka, Git, GitHub, GitHubActions, Maven, Jenkins, Jira, MySQL, SQL, Linux, Docker, Agile 🏢 Description: Java Backend Developer We’re looking for an experienced Java Backend Developer to join a fast-paced, high-impact project in the financial / payments domain. Contract: B2B Work Mode: Hybrid 2/3 days from Warsaw office Qualifications • Minimum of 3+ years of relevant professional experience • Proficiency in JAVA 8+, building and consuming REST APIs, Spring Boot and Spring Technologies • Good knowledge in creating Microservices along with Kafka background. • Solid understanding of HTTPS, SFTP, REST API, and SOAP protocols • Familiarity with Linux operating systems • Strong grasp of microservices architecture and containerization • Knowledge of Agile frameworks and principles • Experience with Git/GitHub, GitHub Actions, Maven, Jenkins, and Jira • Competence with MySQL and SQL databases • Exceptional analytical and problem-solving abilities • Excellent written and verbal communication skills • Demonstrated ability to collaborate effectively with Product, Test, DevOps, and Agile/Scrum teams Mandatory Skills: • Java (Spring), REST APIs, Spring Boot and Spring Technologies • Solid understanding of HTTPS, SFTP, REST API, and SOAP protocols. • Strong grasp of microservices architecture and containerization • Experience with Git/GitHub, GitHub Actions, Maven, Jenkins, and Jira • Competence with MySQL and SQL databases Desired Skills: • Exceptional analytical and problem-solving abilities • Excellent written and verbal communication skills • Demonstrated ability to collaborate effectively with Product, Test, DevOps, and Agile/Scrum teams Years of exp needed: 3-4 years (Mid-Level) 5-7 Years (Mid-Senior) Roles and Responsibilities: The following items are in-scope for this Work Order. • Contribute to the technical design and engineering of applications. • Develop deep domain expertise. • Assist in analysing functional and technical requirements, including comprehensive architecture and design specifications. • Collaborate with Architecture and Business teams to deliver industry-leading solutions. • Participate daily in development, design, code review, and implementation activities. • Employ best practices and drive continuous improvement throughout the development lifecycle. The following items are out-of-scope for this Work Order: Create product requirement Work as a scrum master or product owner 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Opportunity for a Senior Java Backend Developer to build and maintain a secure, large-scale public platform based on microservices within the financial services sector. The role focuses on developing business-critical backend services, contributing to architectural decisions, and improving deployment and engineering practices. Ideal for experienced engineers who combine strong Java expertise with architectural thinking and a proactive approach to system optimization. 🗂️ Requirements: 6–10 years of professional software development experience, Strong expertise in Java backend development, Experience with microservices architecture, Understanding of distributed systems, Experience in system design and software architecture, Ability to work with secure, large-scale systems, Experience improving deployment processes and system reliability 📃 Skills: Java, Microservices, DistributedSystems, SystemDesign, SoftwareArchitecture, REST, Git, Maven, Gradle, Python, Cloud, DevOps 🏢 Description: Senior Java Backend Developer 📍 Location: Wrocław, Poland (Hybrid – 3 days onsite) 📈 Experience: 6–10 years We are currently looking for an experienced Java Backend Developer for our client operating in the financial services sector . The successful candidate will join a team responsible for developing and maintaining a secure, large-scale public platform built on a microservices architecture. This role offers the opportunity to work on business-critical systems where reliability, scalability, and security are key priorities. Beyond feature development, the team is focused on addressing challenges related to architecture, deployment practices, and engineering processes. Therefore, we are looking for someone who combines strong hands-on development skills with architectural thinking and a proactive approach to problem-solving. Key Responsibilities Design and develop new backend features and services using Java Maintain and enhance a secure, customer-facing platform Work within a modern microservices ecosystem Contribute to architectural improvements and technical decision-making Help optimize deployment processes, system reliability, and development workflows Identify technical challenges and propose scalable, long-term solutions What We're Looking For 6–10 years of professional software development experience Strong expertise in Java backend development Solid understanding of microservices architecture and distributed systems Experience with system design and software architecture Strong analytical and critical-thinking skills Ability to understand technical concepts deeply and make informed engineering decisions A proactive mindset and willingness to improve existing systems, processes, and practices Nice to Have Experience with Python Exposure to cloud environments and modern DevOps practices This opportunity is particularly suited to engineers who enjoy working on complex backend systems, influencing architectural decisions, and helping teams improve the way software is designed, built, and deployed.

🏢 Summary: Expert Java Engineer role focused on building scalable, high-performance financial systems using microservices, cloud-native technologies, and distributed architectures in a hybrid Kraków-based environment. The position involves backend development, architecture contributions, CI/CD and Kubernetes operations, and collaboration with global engineering teams. Candidates with strong Java, cloud, and distributed systems expertise, especially in banking or capital markets, are preferred. 🗂️ Requirements: 5+ years of software engineering experience, Strong Java experience, Experience with REST APIs, Experience with microservices architecture, Experience with messaging systems, Strong SQL knowledge, Hands-on Kubernetes experience, Experience with cloud platforms, Knowledge of NoSQL databases, Experience with distributed systems, Experience with CI/CD pipelines, Experience with Agile methodologies, Understanding of scalability and high-availability architectures, Experience in banking or capital markets domain 📃 Skills: Java, REST, Microservices, RabbitMQ, SQL, Kubernetes, GCP, NoSQL, CI/CD, Agile, Go, Rust, ClickHouse 🏢 Description: We are looking for an Expert Java Engineer to join a global team building and evolving mission-critical financial systems. This role is ideal for an experienced back-end engineer who enjoys designing scalable solutions, influencing architecture, and working on high-performance distributed systems. We offer: 📍 Location: Kraków, Poland (Hybrid – 6–8 office visits per month)* 💰 Rate: Up to 190 PLN/h (B2B) * Hybrid Model Based in Kraków with 6–8 office days per month . Candidates living outside Kraków are welcome to apply. If you are willing to travel to the office, we will cover your travel and accommodation costs . Responsibilities: Design and develop scalable microservices and REST APIs. Build high-performance, highly available back-end applications. Develop and operate cloud-native solutions on Kubernetes and GCP. Contribute to architecture decisions and technical roadmaps. Optimize databases, integrations, and distributed systems. Drive engineering best practices across CI/CD, security, and software quality. Collaborate closely with business stakeholders and global engineering teams. Mentor developers and support technical delivery. We are looking for: 5+ years of professional software engineering experience. Strong hands-on experience with Java. Solid experience with REST APIs and microservices architecture. Experience with messaging systems (RabbitMQ or similar). Strong SQL database knowledge. Hands-on experience with Kubernetes. Experience working with cloud platforms (preferably GCP). Knowledge of NoSQL databases and distributed systems. Experience with CI/CD pipelines and Agile methodologies. Strong understanding of scalability, performance, and high-availability architectures. Experience in the banking or capital markets domain, preferably related to trade lifecycle, post-trade processing, or FX products. Nice to Have Experience with Go or Rust. Experience with ClickHouse or other analytical databases. Front-end development experience. Knowledge of API governance. Experience with large-scale data processing environments. This role is not perfectly suited for you, but you have a friend who would fit? Recommend your friend and get up to 5000 zł! Referral Program: Talent from your network Don't hesitate and apply now! 32/6/2026/r/3612

🏢 Summary: Contract role for a Senior Java Backend Developer to design and build scalable backend systems and microservices for a large enterprise digital platform in a hybrid model in Poland. The position focuses on developing RESTful services, integrating external systems, and optimizing distributed applications. Requires strong experience in Java-based microservices architecture and modern DevOps tools. 🗂️ Requirements: 7+ years of Java development experience, Strong expertise in Java 8+, Experience with Spring and related frameworks, Hands-on microservices development, Experience with RESTful APIs and web services, Experience with Kafka or distributed messaging systems, Understanding of SOA principles, Experience with relational or NoSQL databases, Experience with containerization and orchestration, Knowledge of React or advanced JavaScript, Proficiency with Git, Maven, Jenkins, Registration in Poland as self-employed consultant 📃 Skills: Java, Spring, SpringBoot, SpringMVC, JPA, Hibernate, REST, SOAP, HTTP, JSON, XML, Kafka, SQL, NoSQL, Docker, Git, Maven, Jenkins, React, JavaScript 🏢 Description: Dear Consultant, We are seeking an experienced Senior Java Backend Developer to design and build scalable backend systems and microservices for a large enterprise digital platform. Send CV if you are interested and registered in Poland as a self-employed Consultant. (marcillina.tietjen@dcvtechnologies.co.uk) Senior Java Backend Developer – Microservices (Contract) Location: Gdansk or Warsaw, Poland Work Mode: Hybrid – 1 day onsite per week Seniority: 7+ years experience Key Responsibilities • Design and implement backend systems and microservices• Develop RESTful APIs and web services• Participate in architecture reviews and optimisation initiatives• Debug, profile, and optimise applications• Integrate external APIs and services• Write and maintain technical documentation Required Skills & Experience • Strong expertise in Java 8+ • Frameworks: Spring, Spring Boot, Spring MVC, JPA, Hibernate • Microservices development using HTTP, REST, JSON, XML • Messaging and distributed systems experience ( Kafka ) • Strong understanding of SOA principles and web services (REST & SOAP) • Experience with Relational or NoSQL databases • Exposure to containerisation & orchestration technologies • Experience with React or advanced JavaScript • Tools: Docker, Git, Maven, Jenkins