Senior Java Developer

🏢 Summary: Senior FullStack Developer role focused on developing and modernizing a large-scale corporate banking platform. The position involves building and maintaining backend services and Angular frontend components, delivering new features, fixing defects, and supporting production systems within a microservices and monolithic architecture. The role includes active participation in system modernization and REST API development in an Agile environment. 🗂️ Requirements: 5+ years commercial experience with Java 7/8, Experience with Spring Framework and Spring Boot, Experience with Maven, Experience with SQL, Experience with Git, Experience with JSP, Experience with JavaScript, Experience designing and developing REST APIs, Experience in backend service design and implementation, Strong knowledge of unit testing practices, 2+ years experience with Angular, Experience with Jasmine, Experience working with legacy code, Experience working in Agile environment 📃 Skills: Java, Spring, SpringBoot, Maven, SQL, Git, JSP, JavaScript, Angular, Jasmine, REST, Microservices, Agile 🏢 Description: About the Project We are looking for an experienced Senior FullStack Developer to join an international team working on a large-scale corporate banking platform. The application enables corporate clients to manage accounts, execute payments and transfers, handle files and confirmations, and perform a variety of banking operations through a secure online portal. As part of the development team, you will be responsible for maintaining and enhancing a business-critical application, including the delivery of new features, bug fixes, production incident resolution, and implementation of regulatory and business-driven changes. The system consists of both microservices and monolithic components. The team is currently on a modernization journey, gradually transforming the existing platform into a more modern architecture. The working language is English, and the team follows SAFe Agile principles. Responsibilities Design and implement backend services based on business and technical requirements. Develop and maintain REST APIs. Contribute to frontend development using Angular. Write and maintain unit tests. Analyze, maintain, and enhance existing code, including legacy components. Collaborate with cross-functional and international teams. Participate in system modernization and architectural improvements. Support production systems and troubleshoot issues when required. Requirements Must Have 5+ years of commercial experience with: Java 7/8 Spring Framework Spring Boot Maven SQL Git JSP JavaScript Experience in designing and developing REST APIs. Experience in backend service design and implementation based on specifications. Strong understanding of unit testing practices. 2+ years of experience with: Angular Jasmine Experience working in an Agile environment. Willingness to analyze and work with legacy code. Strong communication and collaboration skills. Fluent English (spoken and written). Nice to Have Knowledge of SOLID principles. Familiarity with software design patterns. What We Offer Opportunity to work on a large-scale enterprise platform within the financial sector. Participation in system modernization and transformation initiatives. International and collaborative work environment. Long-term cooperation in a stable project. Exposure to both modern and legacy technologies. Real impact on technical solutions and product development.

🏢 Summary: Development and modernization of a corporate banking platform, transforming a legacy monolith into a microservices-based architecture. The role focuses on building and integrating REST APIs, refactoring legacy systems, and supporting migration using modern engineering practices in an Agile/SAFe environment. You will work across monolithic and microservices architectures, contributing to backend development and system integration. 🗂️ Requirements: Proficiency in Java, Experience with Spring Framework and Hibernate, Strong knowledge of SQL, Experience in REST API development, Understanding of microservices architecture, Experience with Cucumber and Jasmine, Ability to refactor legacy systems, Experience with system integration, English proficiency for technical communication 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Cucumber, Jasmine, Angular, Git, DDD, Hexagonal, WebFlux, Reactor, SAFe, Agile 🏢 Description: About the Project Join an international team responsible for the development and modernization of a key corporate banking platform. The project focuses on transforming a legacy monolithic system into a modern architecture based on microservices while building new APIs that support the platform's future growth. You will work in an Agile/SAFe environment, leveraging modern engineering practices and architectural patterns. Responsibilities Design and develop REST APIs Build and maintain backend applications using Java and Spring Framework Integrate systems and support system-to-system communication Refactor legacy applications and extract business logic into microservices Contribute to the modernization and migration of existing systems Develop solutions across both monolithic and microservices architectures Work with reactive programming technologies and frameworks Support frontend integration with Angular-based applications Create and maintain unit and BDD tests Participate in code reviews and ensure high code quality standards Collaborate with cross-functional teams and stakeholders Produce and maintain technical and API documentation Requirements Must-Have Skills Java Spring Framework / Hibernate SQL REST API development Microservices architecture Cucumber Jasmine Strong English communication skills Nice to Have Angular Technology Stack Java Spring Boot Hibernate SQL REST APIs Microservices Angular Cucumber Jasmine Git Domain-Driven Design (DDD) Hexagonal Architecture (Ports & Adapters) WebFlux / Project Reactor SAFe Agile

🏢 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 optimizing high-performance transactional and banking systems in a 100% remote environment. The position involves designing scalable backend solutions using modern Java and Spring technologies, integrating messaging systems, and ensuring system reliability through advanced monitoring and CI/CD practices. This opportunity targets experienced engineers ready to contribute to complex financial platforms in an agile setting. 🗂️ Requirements: Minimum 5 years of Java development experience, Strong experience with Java 21+, Strong experience with Spring Boot 3, Solid knowledge of PostgreSQL, Experience with CI/CD tools (GitLab, Jenkins), Experience with OpenShift deployments, Experience with RabbitMQ and Kafka, Experience with ELK stack and Dynatrace, Experience with JUnit 5, Mockito, RestAssured, Experience working in Agile (Scrum, Kanban), Good command of Polish, Communicative English proficiency, Legal right to work in the European Union 📃 Skills: Java, Spring, PostgreSQL, Redis, RabbitMQ, Kafka, ELK, Dynatrace, GitLab, Jenkins, OpenShift, JUnit, Mockito, RestAssured, SQL, R 🏢 Description: Unleash innovation in financial technology — shape the future of transactional systems with expertise and precision! 100% remote work. As a Senior Java Developer , you will be working for our client, a leading player in the financial services industry dedicated to delivering cutting-edge transactional and banking systems. You will contribute to the development of robust, scalable solutions that power high-stakes online financial operations, driving digital transformation and operational excellence. This role offers a unique chance to advance your career within an innovative environment that values technical mastery and strategic thinking. Your main responsibilities: Design, develop, and optimize complex backend systems using Java 21+ and Spring Boot 3, adhering to best practices and high-quality standards. Work with domain-driven design (DDD) to implement scalable and maintainable software solutions. Manage and optimize data solutions utilizing PostgreSQL, Redis, and integration tools like RabbitMQ and Kafka. Utilize tools such as ELK stack, Dynatrace, and CI/CD pipelines (GitLab, Jenkins, OpenShift) to ensure system performance and reliability. Conduct thorough testing and validation using JUnit 5, Mockito, and RestAssured to deliver resilient software releases. Collaborate with agile teams (Scrum, Kanban) for iterative development and continuous improvement. Contribute analytical insights and high-level problem-solving skills to support transaction systems in a fast-paced financial environment. You're ideal for this role if you have: At least 5 years of experience in Java development, with a strong background in Spring Boot 3 and Java 21+. Solid understanding of database technologies, particularly PostgreSQL. Practical experience with CI/CD tools such as GitLab, Jenkins, and deployment on OpenShift. Familiarity with message brokers like RabbitMQ and Kafka. Knowledge of monitoring and logging tools (ELK stack, Dynatrace). Experience with automated testing frameworks including JUnit 5, Mockito, and RestAssured. Strong analytical skills and experience working within agile methodologies (Scrum, Kanban). It is a strong plus if you have: Experience in the finance sector and knowledge of financial risk modeling. Certifications related to cloud, database management, or software development. Basic knowledge of R language and SQL testing. Language required for the role: Polish (good command), English (communicative proficiency). Eligibility to work in Europe: Only candidates with an existing legal right to work within the European Union will be considered for this role.

🏢 Summary: The offer is for an experienced Backend Java Developer to design, develop, and support Java applications for savings and investment products within a financial institution. The role focuses on building calculation engines compliant with international tax regulations, integrating with tax authorities, and delivering customer-facing reporting solutions. It involves full software development lifecycle participation, collaboration with analysts, and mentoring team members in a hybrid work model in Poland. 🗂️ Requirements: Strong proficiency in Java 21, Experience with Spring Boot and Hibernate, Experience with relational databases and SQL, Knowledge of PostgreSQL, Knowledge of JMS and MQ messaging protocols, Familiarity with OpenAPI and AsyncAPI, Proficiency with Git, Experience with CI/CD pipelines, Understanding of software design patterns, Understanding of object-oriented programming principles, Ability to participate in full software development lifecycle 📃 Skills: Java, Spring, Hibernate, SQL, PostgreSQL, JMS, MQ, OpenAPI, AsyncAPI, Git, CI/CD 🏢 Description: Introduction & Summary: The position requires experienced Backend Java Developers to join a prominent financial institution. The ideal candidates will possess extensive knowledge in Java development, particularly within financial services, and demonstrate strong analytical and collaboration skills. This role will involve the design, implementation, and support of Java applications that manage essential financial products. Main Responsibilities: As a Backend Java Developer, you will be responsible for creating and maintaining robust Java applications. Key responsibilities include: Designing, developing, and enhancing Java applications supporting savings and investment products. Building calculation engines ensuring compliance with tax regulations across multiple countries. Integrating with tax authorities and generating customer-facing reports. Participating in the complete software development lifecycle, including requirements analysis, design, coding, testing, and deployment. Collaborating with financial analysts to transform requirements into technical solutions. Mentoring other developers and acting as a code reviewer. Utilizing AI-assisted development to improve productivity and quality. Key Requirements: Strong proficiency in Java (version 21) and related frameworks (Spring Boot, Hibernate). Experience with relational databases and SQL (PostgreSQL). Knowledge of messaging protocols such as JMS and MQ. Familiarity with OpenAPI and AsyncAPI for data management. Proficiency in version control systems (Git) and CI/CD pipelines. Understanding of software design patterns and object-oriented programming principles. Excellent collaboration and analytical skills. Nice to Have: Experience in financial services or related domains. Keen interest in emerging technologies. Other Details: This role is based in Poland with a hybrid work model requiring three days at the office from Gdańsk/Warsaw. The engagement focuses on enhancing financial solutions in the investment sector.

🏢 Summary: Senior Fullstack Developer role focused on developing and modernizing a corporate digital banking platform. The position involves building scalable API solutions, working with microservices and monolithic architectures, and delivering high-quality software using modern engineering practices. The role requires close collaboration within Agile teams to ensure resilient and maintainable solutions. 🗂️ Requirements: Minimum 6 years of Java development experience, Approximately 2 years of Angular experience, Experience building API solutions, Working knowledge of Spring and Hibernate, Experience with reactive programming, Experience with REST and microservices, Experience with SQL, Experience with Git, Knowledge of Cucumber, Understanding of SOLID principles and design patterns, Experience working in Agile environment, Fluency in English 📃 Skills: Java, Angular, Spring, Hibernate, REST, Microservices, SQL, Git, Cucumber, Jasmine, SAFe 🏢 Description: As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Senior Fullstack Developer Responsibilities: Develop and maintain new features for a modern corporate digital banking platform Build and improve API solutions supporting key banking services such as accounts, payments, file transfer, and international/local services Contribute to the modernisation of the legacy Corporate Netbank platform Work with backend services based on microservice and monolithic architecture Design and implement resilient, scalable, and maintainable software solutions Follow Domain-Driven Design principles and port-adapter architecture Collaborate closely with developers, Product Owners, architects, analysts, and QA engineers Support maintenance, compliance, and platform improvement activities Participate in Agile ceremonies and contribute to team planning and delivery Ensure high quality of delivered software through clean code, testing, and best engineering practices Requirements: At least 6 years of hands-on experience in Java development Around 2 years of experience with Angular Strong experience in building API solutions Working knowledge of Spring and Hibernate Experience with reactive programming Experience with REST, microservices, SQL, and Git Knowledge of Cucumber framework Good understanding of SOLID principles and design patterns High level of software development skills and engineering mindset Experience working in an Agile environment, preferably SAFe Strong collaboration skills and focus on quality and timely delivery Fluency in English Nice to have: Working knowledge of unit testing in Jasmine Experience working in banking or financial services projects Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Senior Java Developer role focused on designing and building high-performance, scalable backend systems in a distributed microservices environment for the financial sector. The position involves developing REST APIs, processing large data volumes, and contributing to architecture and CI/CD in cloud-based environments. The role requires strong expertise in Java, Spring, distributed systems, and Kubernetes. 🗂️ Requirements: Minimum 10 years of software development experience, Very good knowledge of Java and Spring, Strong understanding of REST APIs, HTTPS, microservices, and message queues, Ability to design high-availability, scalable, high-performance systems, Very good knowledge of relational databases and SQL, Knowledge of distributed systems and data processing, Hands-on experience with Kubernetes and cloud platforms (GCP preferred), Familiarity with CI/CD pipelines, Experience working in Agile methodologies, Fluent Polish and English, Residence in Poland 📃 Skills: Java, Spring, REST, HTTPS, Microservices, MQ, SQL, Kubernetes, GCP, CI/CD, Agile, DistributedSystems, DataProcessing 🏢 Description: We are looking for an experienced Senior Java Developer to join a team responsible for building and developing modern backend systems in a distributed environment. The projects involve high-performance and scalable solutions used in the financial sector, with a focus on processing large volumes of data and microservices architecture. Your tasks Designing and developing backend systems based on Java Creating and evolving a microservices architecture Building and maintaining REST APIs and system integrations Designing solutions that meet high availability and performance requirements Working with systems that process large volumes of data Collaborating with the team using Agile methodologies Participating in architecture design and technical decision-making Implementing and optimizing CI/CD processes and ensuring system security Requirements Minimum 10 years in software development Very good knowledge of Java (backend) and Spring Strong understanding of REST APIs, HTTPS, microservices, and message queues (MQ) Ability to design high-availability, scalable, and high-performance systems Very good knowledge of relational databases (SQL) Familiarity with CI/CD pipelines and Agile ways of working Knowledge of distributed systems and data processing Hands-on work with Kubernetes and cloud platforms (GCP preferred) Fluent Polish and English required Residing in Poland required Nice-to-have requirements Knowledge of Go, Rust, or similar system-level languages Experience with NoSQL and analytical databases, e.g., ClickHouse Frontend development experience Familiarity with the banking sector (trade lifecycle, FX, post-trade processing) Banking experience / FX experience (forex) Working from the office in Krakow 6 times per month What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 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 Java Developer role in the banking industry focused on designing and modernising backend integration solutions for Safekeeping and Corporate Actions platforms. The position involves developing Java microservices, supporting production environments, and collaborating across Scrum teams in large-scale enterprise systems. The offer includes private medical care, sports card co-financing, and an employee referral program. 🗂️ Requirements: 5+ years of Java backend experience, Experience in large-scale enterprise environments, Spring Boot, Spring Integration, SQL, Relational databases, REST services, Microservices, Integration patterns, Maven, Git, CI/CD pipelines, JUnit, Testcontainers, Messaging systems, Event-driven integration, Ability to analyse requirements and production issues, Fluent English 📃 Skills: Java, Spring, SpringBoot, SpringIntegration, SQL, Oracle, IBMMQ, Kafka, REST, Microservices, Maven, Git, CI/CD, JUnit, Testcontainers, JIRA 🏢 Description: Senior Java Developer Industry: Banking Responsibilities: - Design backend integration solutions for Safekeeping and Corporate Actions platform - Develop Java-based microservices and integration components - Test, deploy and support backend services in production - Modernise and rearchitect existing codebase due to scope expansion - Analyse business and system flows and clarify requirements - Prepare and support test cases when needed - Document system dependencies and data flows - Support deployment planning and orchestration - Troubleshoot production issues and analyse logs and data flows - Participate in Scrum processes using JIRA - Contribute to knowledge sharing and development standards - Support growth and mentoring of other developers - Collaborate across development, analysis, QA and infrastructure teams Requirements: - Minimum 5 years of Java backend experience (Senior) or 10 years (Expert) - Strong experience in large-scale enterprise environments - Spring Boot and Spring Integration - SQL and relational databases (preferably Oracle) - Experience with messaging and event-driven integration (IBM MQ, Kafka preferred) - Experience with REST services, microservices and integration patterns - Maven, Git and CI/CD pipelines - Automated testing with JUnit and Testcontainers - Ability to analyse requirements, system flows, logs and production issues - Fluent English Nice to have: - Experience in banking or trading domain - Experience with cloud-ready application design - Experience in modernising integration in regulated domains (custody, settlement, corporate actions) - Experience with containerisation and integration with legacy systems or vendor platforms - Experience with test automation, static code analysis and AI-assisted development tools Offer: - Private medical care - Co-financing for the sports card - Constant support of dedicated consultant - Employee referral program

🏢 Summary: The offer is for a Senior Java Developer responsible for developing and modernising a Corporate Netbank application, including backend services and REST APIs. The role involves working with both microservices and monolithic architecture, implementing new features, fixing bugs, and supporting production in an Agile/SAFe environment. The position also requires analysing legacy code and contributing to ongoing system improvements. 🗂️ Requirements: Minimum 5 years of Java development experience, Strong experience with Java 7/8, Practical experience with Maven, Practical experience with Git, Practical experience with Spring Framework, Practical experience with Spring Boot, Good knowledge of SQL, Experience with JSP, Experience with JavaScript, Experience in writing REST APIs, Experience in backend services design and implementation, Experience with unit testing, Minimum 2 years of experience with Angular, Minimum 2 years of experience with Jasmine, Experience working in Agile environment, Willingness to analyse and maintain legacy code, Fluency in English 📃 Skills: Java, Maven, Git, Spring, SpringBoot, SQL, JSP, JavaScript, REST, Angular, Jasmine, Agile, Microservices 🏢 Description: Responsibilities: Developing, maintaining, and enhancing the Corporate Netbank application Implementing new features and improvements based on business and technical requirements Fixing bugs and supporting the resolution of production incidents Implementing compliance and mandatory business changes Designing and implementing backend services according to given specifications Writing and maintaining REST APIs Working with both microservice-based and monolithic architecture Implementing unit tests to ensure high-quality delivery Analysing and working with legacy code Collaborating with international teams in an Agile/SAFe environment Supporting the ongoing modernisation of the existing system Requirements: Minimum 5 years of experience with Java development Strong experience with Java 7/8 Practical experience with Maven, Git, Spring Framework, and Spring Boot Good knowledge of SQL Experience with JSP, JavaScript, and frontend-related development Experience in writing REST APIs Experience in backend services design and implementation Experience with unit testing Minimum 2 years of experience with Angular and Jasmine Experience working in an Agile environment Willingness to analyse, maintain, and improve legacy code Good communication skills Fluency in English Nice to have: Knowledge of SOLID principles Knowledge of design patterns Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program