Senior Java Developer

🏢 Summary: Senior Java Developer role focused on building and maintaining core banking systems using modern Java and event-driven microservices architecture. The position involves developing scalable services, evolving legacy systems, and contributing to a complex microservices ecosystem within a CI/CD environment. Remote work model with strong emphasis on high-quality, domain-driven design in the financial sector. 🗂️ Requirements: 7+ years of Java development experience, Experience in banking or financial services, Deep knowledge of Java 21/25, Strong knowledge of Spring Boot, Experience with MongoDB, Strong experience with Apache Kafka, Experience with event-driven architecture, Proficiency in REST APIs, Proficiency with Git, Proficiency with Maven, Experience with CI/CD tools, Experience with microservices architecture, Understanding of Domain-Driven Design (DDD), Ability to work with legacy systems, Communicative Polish, Legal right to work in the EU 📃 Skills: Java, Spring, SpringBoot, MongoDB, Kafka, REST, Git, Maven, Jenkins, OpenShift, JaCoCo, SonarQube, CQRS, DDD, Hexagonal, Microservices, CI/CD 🏢 Description: Empower scalable financial systems — drive innovation in banking technology! Warsaw-based opportunity with remote work model (up to 5 days remote per week). As a Senior Java Developer , you will be working for our client, a leader in the banking industry, dedicated to building and maintaining core domain systems that serve internal clients. Join us in creating robust, event-driven microservices that shape the future of banking infrastructure, fostering seamless digital experiences and technological excellence. Your main responsibilities: Develop and maintain core banking services using Java 21/25, Spring Boot 4.0, and MongoDB. Design and implement event-driven architectures utilizing Apache Kafka and Schema Registry. Collaborate on microservices ecosystem, ensuring high quality and scalability. Work with legacy code and contribute to system evolution within a complex environment. Ensure code quality through tools like JaCoCo and SonarQube, following best practices. Participate in CI/CD pipelines using OpenShift, Jenkins, and Maven. Apply Domain-Driven Design (DDD), CQRS, and Hexagonal architecture principles. Work independently within a mono-repo approach, managing multiple repositories and shared libraries. You're ideal for this role if you have: 7+ years of experience in Java development, ideally within banking or financial services. Deep knowledge of Java (21/25), Spring Boot, and MongoDB. Strong experience with Kafka and event-driven architecture. Proficiency with REST APIs, Git, Maven, and CI/CD tools. Ability to work with legacy systems and develop scalable solutions. Solid understanding of microservices architecture and domain modeling. It is a strong plus if you have: (optional) Certifications or experience in OpenShift, Jenkins, or related cloud technologies. Language Required for the role: Communicative Polish. Eligibility for the role: Only candidates with an existing legal right to work in the European Union 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 Fullstack Developer role focused on modernizing a banking Corporate Netbank Administration system through REST API development and microservices extraction. The position involves refactoring legacy applications and enhancing integrations to improve customer experience. Work is delivered in hybrid model with strong emphasis on Java and modern frameworks. 🗂️ Requirements: Minimum 6 years of hands-on Java development experience, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST APIs, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) The Senior Fullstack Developer role is focused on modernizing the Corporate Netbank Administration (CNA) system, improving the customer experience through API development, and ensuring seamless integration across various services. The position requires strong expertise in Java development and solid experience with modern frameworks. RESPONSIBILITIES: Building REST API solutions and integrations with other applications. Refactoring legacy applications by extracting business logic into microservices. Collaborating with other developers, teams, and stakeholders to deliver optimal solutions. Participating in the development and continuous improvement of services in both microservice and monolith architectures. REQUIREMENTS: Hands-on experience in Java development (preferably at least 6 years). Familiarity with reactive programming . Working knowledge of Spring and Hibernate frameworks. Experience with SQL , REST , Microservices , and Git . At least 2 years of experience with Angular . NICE TO HAVE: Familiarity with the DDD (Domain-Driven Design) approach. Experience with the Cucumber framework. Previous experience working in an international team with English as the common language. Exposure to SAFe Agile methodologies.

🏢 Summary: Hybrid Senior Fullstack Developer role focused on building and maintaining large-scale, event-driven microservices systems using modern Java and Spring Boot alongside Angular-based SPAs. The position involves end-to-end development, security implementation, and active participation in CI/CD and Agile processes. Requires strong hands-on experience across backend and frontend technologies in distributed environments. 🗂️ Requirements: Minimum 6 years professional software development experience, Senior-level hands-on experience with large-scale applications, Strong fullstack experience (backend and frontend), Java 17+ (Java 21 preferred), Spring Boot 3.x and microservices architecture, Experience with Kafka and event-driven systems, Experience with Node.js and TypeScript, Proven experience building SPAs with Angular, Strong SQL skills with Oracle, Experience with OAuth2 and OIDC, Understanding of OWASP web security principles, Experience with Git version control, Experience with GitLab CI, Ability to work in Agile (Scrum/Kanban) environments, Professional English proficiency 📃 Skills: Java, Spring, SpringBoot, Microservices, Kafka, Node.js, TypeScript, Angular, SQL, Oracle, OAuth2, OIDC, OWASP, Git, GitLab, CI/CD, DDD, Redis, Docker, Kubernetes, Jenkins, Maven, Webpack, Python, Jira, Confluence 🏢 Description: Senior Fullstack Developer . This is a hybrid position based in Warsaw , (50% on-site presence). Responsibilities Design, implement and maintain backend services using modern Java (versions 17–21) and Spring Boot 3.x within microservices architectures. Develop and maintain frontend components and Single Page Applications using Node.js, TypeScript and Angular, ensuring maintainability and sound frontend architecture. Architect and implement event-driven and messaging solutions using Kafka; integrate with relational databases (Oracle) and in-memory stores (Redis). Apply Domain-Driven Design principles to model complex business domains and deliver modular, testable solutions. Contribute to security design and implementation of web applications, including OAuth2/OIDC integration and adherence to OWASP principles. Participate in CI/CD pipelines (GitLab CI required), version control workflows (Git), and use developer tools such as IntelliJ and VS Code. Collaborate with distributed, international teams using Agile methodologies (Scrum/Kanban), Jira and Confluence; perform code reviews and provide practical technical guidance to peers. Qualifications Minimum 6 years of professional software development experience, with senior-level, hands-on delivery on large-scale applications. Strong fullstack background; backend-only candidates will not be considered. Excellent written and spoken English. Required technical skills: Java 17 or newer (Java 21 experience preferred) Spring Boot (3.x) and microservices Kafka (event-driven / messaging systems) Domain-Driven Design (DDD) Node.js and TypeScript Proven experience building SPAs with Angular Strong SQL skills, particularly with Oracle Security and tooling: Practical experience with OAuth2 and OIDC; strong understanding of web application security and OWASP principles Version control with Git and CI/CD with GitLab CI (required) Familiarity with Kafka in both backend and operational contexts Working knowledge of Jira and Confluence Desirable (nice to have): Experience with Redis Familiarity with Docker and Kubernetes Experience with Jenkins, Maven and Webpack Python and familiarity with AI-based code generation tools Experience working in distributed, international teams and a DevOps mindset. Benefits Hybrid working arrangement: Warsaw, Poland — approximately 50% on-site presence. Opportunity to work on large-scale systems using modern Java, microservices and event-driven architectures. Collaboration within distributed, international teams and exposure to established Agile and DevOps practices. Use of contemporary developer tooling and platforms (IntelliJ, VS Code, GitLab CI, Kafka, Spring Boot). Scope to apply and deepen expertise in security, DDD and end-to-end fullstack development. Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere. Agile approach and no bureaucracy. Outstanding integration trips to various places in Europe for all employees. Activities to support your well-being and health. Luxmed Gold Extended medical care and Multisport Plus benefit. If you meet the stated qualifications and are interested in this opportunity, we encourage you to apply via the application form.

🏢 Summary: Senior/Expert Java Integration Developer role for a long-term banking transformation project focused on backend integrations, Java microservices, and modernization of Safekeeping and Corporate Actions platforms. The position involves building and enhancing integrations using Spring Boot, REST APIs, Kafka, and IBM MQ within an international Scrum environment. Hybrid B2B cooperation in Warsaw or Gdańsk with potential project extension. 🗂️ Requirements: 5+ years of commercial Java backend development experience, Strong Java knowledge, Experience with Spring Boot, Experience with Spring Integration, Experience with REST APIs, Experience with microservices, Strong SQL skills, Experience with relational databases, Experience with Oracle, Experience with Kafka and/or IBM MQ, Knowledge of Maven, Knowledge of Git, Experience with CI/CD pipelines, Experience with JUnit, Experience with Testcontainers, Experience analyzing production issues and integrations, Professional English 📃 Skills: Java, Spring, SpringBoot, SpringIntegration, REST, Microservices, SQL, Oracle, Kafka, IBMMQ, Maven, Git, CI/CD, JUnit, Testcontainers, Scrum 🏢 Description: Senior / Expert Java Integration Developer (Banking) 📍 Location: Warsaw or Gdańsk (hybrid – 2–3 days per week in the office) 💼 Contract: B2B 💰 Rate: up to 165 PLN/h 📅 Project duration: August 2026 – January 2027 (with possible extension) 🗣 Language: English (Professional) 👥 Open positions: 2 About the Project For our international client from the banking sector , we are looking for an experienced Senior / Expert Java Integration Developer to join a growing engineering team responsible for developing and modernising backend integration components supporting Safekeeping and Corporate Actions platforms. The project is undergoing significant expansion as part of a long-term strategic transformation, including migration of business processes and increased transaction volumes. You will participate in redesigning existing integrations, building modern Java microservices, and integrating critical banking systems. You'll join an experienced Scrum team working in a collaborative international environment with architects, analysts, QA engineers, and infrastructure specialists. Your Responsibilities Design, develop and maintain Java-based backend applications and integration services Develop modern microservices using Spring Boot Build and enhance integrations between banking systems using REST APIs, Kafka and IBM MQ Participate in application architecture improvements and legacy modernization Analyze business requirements, technical documentation and system dependencies Support deployment planning and production issue investigation Develop automated unit and integration tests Participate in code reviews and promote engineering best practices Collaborate with international Agile/Scrum teams Must Have 5+ years of commercial experience in Java backend development (10+ years for Expert level) Strong knowledge of Java and Spring Boot Experience with Spring Integration Practical experience with REST APIs and microservices Strong SQL skills and experience with relational databases (Oracle preferred) Experience with Kafka and/or IBM MQ Maven, Git and CI/CD pipelines JUnit and Testcontainers Experience analyzing production issues, logs, integrations and system flows Professional level English Nice to Have Banking or capital markets experience Experience with custody, settlement or corporate actions platforms Kubernetes and containerized applications Cloud-native application design Test automation and static code analysis Experience with AI-assisted development tools Experience building applications integrated with Kafka What We Offer International banking project Modern technology stack and large-scale enterprise systems Opportunity to influence architecture and modernization initiatives International Scrum environment Competitive B2B rate Stable cooperation with the possibility of project extension Hybrid work model (Warsaw or Gdańsk)

🏢 Summary: Senior Java Developer role focused on building and maintaining Java-based microservices, APIs, and data integration solutions in a hybrid B2B setup. The position involves ETL processes, database operations, and collaboration in a DevOps-driven environment. Experience with Java, Spring Boot, Kafka, PostgreSQL, and cloud-native tools is required. 🗂️ Requirements: 8+ years of software development experience, Java, Spring Boot, Microservices architecture, API development, Kafka, PostgreSQL, SQL, DataStage, Kubernetes, Jenkins, Bitbucket, DevOps experience, Fluent English 📃 Skills: Java, Spring, Kafka, PostgreSQL, SQL, DataStage, Kubernetes, Jenkins, Bitbucket, Microservices, APIs, ETL, DevOps 🏢 Description: Senior Java Developer Location: Hybrid (2 days/week from Warsaw, Gdańsk, Gdynia, or Łódź) Contract: B2B via Experis Start Date: ASAP / up to 30 days notice period Responsibilities Develop and maintain data integration solutions and data flow processes Build and enhance Java-based microservices and APIs Support ETL processes and database operations Collaborate in a DevOps-driven environment Requirements 8+ years of experience in software development Strong experience with Java and Spring Boot Experience with microservices architecture and APIs Knowledge of Kafka Experience with PostgreSQL and SQL Knowledge of DataStage (ETL) Familiarity with Kubernetes, Jenkins, and Bitbucket DevOps mindset Strong communication and teamwork skills Fluent English Nice to Have Experience in the banking or financial industry Benefits Medicover healthcare Multisport card Group life insurance Access to e-learning platform

🏢 Summary: Full-stack Developer role in the banking industry focused on developing and maintaining microservices and integrating applications with a Cards platform. The position involves building scalable full-stack solutions using Java, Angular, REST APIs, Kafka, and cloud-native technologies in a hybrid work model. Candidates should have strong backend and frontend experience, knowledge of microservices architecture, and familiarity with DevOps and Agile practices. 🗂️ Requirements: Minimum 2 years of front-end experience, At least 5 years of Java development experience, Experience with microservices architecture, Knowledge of event sourcing architecture patterns, Hands-on experience with Angular, Hands-on experience with Spring Framework, Hands-on experience with Docker, Hands-on experience with Kubernetes, Hands-on experience with REST APIs, Hands-on experience with Kafka, Hands-on experience with MQ, Hands-on experience with SQL, Familiarity with Jenkins, Familiarity with ArgoCD, Understanding of XML, Understanding of JSON, Understanding of Avro, Experience with Git, English proficiency at B2 level, Experience working in Agile/Scrum environments 📃 Skills: Java, Angular, Spring, Docker, Kubernetes, REST, Kafka, MQ, SQL, Jenkins, ArgoCD, XML, JSON, Avro, Git 🏢 Description: Industry: banking Location: Hybrid - 3 days per week form office in Gdańsk, Gdynia, Warsaw or Łódź Rate: up to 165 pln/h on b2b Overview We are seeking a Full-stack Developer who will be instrumental in the development and maintenance of microservices. The role requires a combination of technical skills and collaboration with various stakeholders to achieve optimal solutions. Main Responsibilities Design and develop a full-stack application. Integrate existing applications with the Cards target platform. Implement translation/routing mechanisms from old to new systems. Develop microservices using Angular, REST APIs, and integrate with KAFKA/MQ/Oracle DB. Ensure application quality and responsiveness. Collaborate with internal and external stakeholders. Key Requirements Minimum 2 years of front-end experience. At least 5 years of Java Software Development experience. Practical knowledge of event sourcing architecture patterns and microservices architecture. Hands-on experience with Angular, Spring Framework, Docker, Kubernetes, REST, Kafka, MQ, SQL. Familiarity with DevOps tools such as Jenkins and Argo CD. Understanding of data standards, including XML, JSON, Avro. Experience with Kafka streaming platform. Version control tools like GIT. Proficiency in English (minimum B2 level). Experience with Agile/Scrum methodologies. Nice to Have Building distributed, highly scalable and high throughput applications.

🏢 Summary: Full-stack Developer role focused on building and maintaining microservices and integrating applications within a banking environment. The position involves developing full-stack solutions using Java and Angular, working with event-driven architectures, and collaborating with stakeholders in a hybrid work model. The offer includes B2B cooperation with a rate up to 165 PLN/h. 🗂️ Requirements: Minimum 2 years of front-end experience, At least 5 years of Java development experience, Experience with event sourcing and microservices architecture, Hands-on experience with Angular, Hands-on experience with Spring Framework, Hands-on experience with Docker, Hands-on experience with Kubernetes, Hands-on experience with REST APIs, Hands-on experience with Kafka, Hands-on experience with MQ, Hands-on experience with SQL, Familiarity with Jenkins, Familiarity with ArgoCD, Understanding of XML, Understanding of JSON, Understanding of Avro, Experience with Git, English proficiency at B2 level or higher, Experience with Agile/Scrum 📃 Skills: Java, Angular, Spring, Docker, Kubernetes, REST, Kafka, MQ, Oracle, SQL, Jenkins, ArgoCD, XML, JSON, Avro, Git 🏢 Description: Industry: banking Location: Hybrid - 3 days per week form office in Gdańsk, Gdynia, Warsaw or Łódź Rate: up to 165 pln/h on b2b Overview We are seeking a Full-stack Developer who will be instrumental in the development and maintenance of microservices. The role requires a combination of technical skills and collaboration with various stakeholders to achieve optimal solutions. Main Responsibilities Design and develop a full-stack application. Integrate existing applications with the Cards target platform. Implement translation/routing mechanisms from old to new systems. Develop microservices using Angular, REST APIs, and integrate with KAFKA/MQ/Oracle DB. Ensure application quality and responsiveness. Collaborate with internal and external stakeholders. Key Requirements Minimum 2 years of front-end experience. At least 5 years of Java Software Development experience. Practical knowledge of event sourcing architecture patterns and microservices architecture. Hands-on experience with Angular, Spring Framework, Docker, Kubernetes, REST, Kafka, MQ, SQL. Familiarity with DevOps tools such as Jenkins and Argo CD. Understanding of data standards, including XML, JSON, Avro. Experience with Kafka streaming platform. Version control tools like GIT. Proficiency in English (minimum B2 level). Experience with Agile/Scrum methodologies. Nice to Have Building distributed, highly scalable and high throughput applications.

🏢 Summary: Full-stack Java developer role in the financial sector focused on building scalable microservices and modern frontend applications in an Agile environment. The position involves backend and frontend development using Java, Angular, cloud-native technologies, and distributed systems integrations. Hybrid work model with a long-term international project and competitive B2B rate. 🗂️ Requirements: 5+ years of commercial Java development experience, 2+ years of Angular experience, Knowledge of Spring Framework, Experience with microservices architecture, Experience with Docker, Experience with Kubernetes, Experience with Kafka and distributed systems, Knowledge of REST APIs, Knowledge of SQL, Experience with Oracle databases, Experience with Git, Understanding of Clean Code principles, Understanding of Continuous Integration, Experience integrating REST and SOAP services, Knowledge of XML, Knowledge of JSON, Knowledge of Avro, English level B2 or higher 📃 Skills: Java, Angular, React, Spring, Docker, Kubernetes, Kafka, REST, SQL, Oracle, Git, SOAP, XML, JSON, Avro, Jenkins, ArgoCD 🏢 Description: Senior Java Full-stack Developer 📍 Location: Warsaw, Gdańsk or Gdynia 🏢 Work model: Hybrid (3 days per week in the office) 📅 Project duration: August 2026 – January 2027 💰 B2B rate: up to 157 PLN/h ⏰ Full-time (40h/week) About the project Join an international financial institution and become part of a team responsible for building modern, scalable solutions supporting one of the company's key business domains. You will work in an Agile environment, developing cloud-ready microservices and integrating modern applications with existing enterprise platforms. This role combines backend and frontend development while giving you the opportunity to work with modern technologies, distributed systems, and high-performance applications. Your responsibilities Design, develop and maintain full-stack applications. Build and enhance Java-based microservices. Develop modern frontend solutions using Angular. Integrate applications using REST APIs, Kafka, MQ and Oracle databases. Participate in migration and transformation of existing systems. Ensure application quality, scalability and performance. Collaborate with architects, analysts, QA engineers and business stakeholders. Contribute to code reviews and technical improvements. We are looking for someone who has Minimum 5 years of commercial experience with Java development. At least 2 years of experience with Angular (React is also valued). Strong knowledge of Spring Framework . Experience building microservices architectures . Practical experience with Docker and Kubernetes . Experience working with Kafka and distributed systems. Knowledge of REST APIs , SQL and Oracle databases. Experience with Git . Understanding of Clean Code , Continuous Integration and software engineering best practices. Experience integrating REST and SOAP services. Good understanding of XML, JSON and Avro . Good command of English (B2 or higher) . Nice to have Jenkins Argo CD Event Sourcing Schema Registry DevOps practices What we offer Competitive B2B rate of up to 157 PLN/hour . Long-term international project. Opportunity to work with modern cloud-native technologies. Challenging projects within the financial sector. Professional, collaborative and Agile environment. Work with experienced engineers on large-scale enterprise solutions.

🏢 Summary: Long-term hybrid Java Engineer role on a project for a major international Swiss investment bank, focused on building and maintaining microservices and data streaming solutions in a modern cloud environment. The position requires deep expertise in Java and related enterprise technologies, with work in AI-assisted development and secure, scalable architectures. Opportunity to work with modern technologies in an international setting with strong growth potential. 🗂️ Requirements: 15+ years of experience in Java development, Extensive experience with Flowable, Strong knowledge of Spring Boot, Experience with ORM frameworks (JPA, iBatis), Knowledge of security standards (Azure AD, OAuth), Experience with Kafka, Experience with CosmosDB, Experience with PostgreSQL, Experience with Redis, Experience in building REST services, Experience with Azure cloud, Experience with Docker, Experience with Kubernetes, Experience with Maven, Experience with Gradle, Experience with microservices architecture, Experience with data streaming architectures, Experience with AI-assisted software development 📃 Skills: Java, Flowable, SpringBoot, JPA, iBatis, AzureAD, OAuth, Kafka, CosmosDB, PostgreSQL, Redis, REST, Azure, Docker, Kubernetes, Maven, Gradle, Microservices, DataStreaming, AI 🏢 Description: We are currently looking for talented and experienced Java Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Wroclaw or Krakow 🏢 Hybrid model: 3 days per week from the office Java Engineer with extensive knowledge (15+ years) of Java Flowable, Spring Boot, ORM frameworks (JPA, iBatis) Security (Azure AD, OAuth), Kafka, CosmosDB PostgresSQL, Redis, REST, Azure, Docker, Kubernetes, Maven Gradle, microservices and data streaming architectures and AI‑assisted software development. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Long-term hybrid opportunity for a senior Java Engineer to join a major international Swiss investment bank, working on modern microservices and data streaming architectures. The role focuses on backend development using Java and related enterprise technologies within a complex financial environment. It offers stable cooperation and involvement in impactful, large-scale projects. 🗂️ Requirements: 15+ years of experience with Java, Strong experience with Flowable, Strong experience with Spring Boot, Experience with ORM frameworks (JPA, iBatis), Experience with Azure AD and OAuth security, Experience with Kafka, Experience with CosmosDB, Experience with PostgreSQL, Experience with Redis, Experience with REST APIs, Experience with Azure, Experience with Docker, Experience with Kubernetes, Experience with Maven, Experience with Gradle, Experience with microservices architecture, Experience with data streaming architectures, Experience with AI-assisted software development 📃 Skills: Java, Flowable, SpringBoot, JPA, iBatis, AzureAD, OAuth, Kafka, CosmosDB, PostgreSQL, Redis, REST, Azure, Docker, Kubernetes, Maven, Gradle, Microservices, DataStreaming, AI 🏢 Description: We are currently looking for talented and experienced Java Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Wroclaw or Krakow 🏢 Hybrid model: 3 days per week from the office Java Engineer with extensive knowledge (15+ years) of Java Flowable, Spring Boot, ORM frameworks (JPA, iBatis) Security (Azure AD, OAuth), Kafka, CosmosDB PostgresSQL, Redis, REST, Azure, Docker, Kubernetes, Maven Gradle, microservices and data streaming architectures and AI‑assisted software development. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk