Senior Java Developer

🏢 Summary: Senior Java Developer role focused on building and modernizing a global enterprise data integration platform. The position delivers scalable microservices, event-driven data processing, and system integrations, with Apache Kafka production expertise as a core requirement. 🗂️ Requirements: 10+ years of commercial software development experience, Senior-level Java backend expertise, Production experience with Apache Kafka, Experience designing microservices and scalable backend services, Experience with event-driven architectures, Experience with distributed systems and enterprise integrations, Experience with data-processing solutions, Ability to contribute independently to technical design and architecture discussions, Very good English communication skills, Residence in Poland, Valid Confluent Certified Developer for Apache Kafka (CCDAK) certification 📃 Skills: Java, SpringBoot, ApacheKafka, Microservices, EventDriven, DistributedSystems, APIs, Messaging, DDD, CCDAK 🏢 Description: We are looking for an experienced Senior Java Developer to join a team building a modern enterprise data integration and processing platform that supports key logistics and transportation processes on a global scale. This role focuses on developing scalable backend services, microservices, and event-driven integrations within a complex enterprise environment. You will contribute to the design and implementation of solutions that enable efficient data processing and communication across business systems. An important part of the role involves modernizing legacy applications and delivering solutions aligned with Domain-Driven Design principles. We are looking for a self-driven professional who can actively participate in architecture discussions and make sound technical decisions. Strong hands-on production experience with Apache Kafka is essential for success in this role. Your tasks Designing, developing, and maintaining scalable backend services and microservices using Java and Spring Boot Implementing event-driven architectures and data-processing solutions based on Apache Kafka Building enterprise integrations between internal and external systems using APIs, messaging platforms, and asynchronous communication mechanisms Participating in technical design and solution architecture discussions, providing expertise in distributed systems and integration patterns Supporting the modernization and transformation of legacy applications into scalable, maintainable, and cloud-ready solutions Monitoring, troubleshooting, and optimizing application performance, reliability, and scalability across distributed environments Collaborating closely with developers, architects, and business stakeholders to deliver strategic data integration and digital transformation initiatives Requirements Minimum 10 years of commercial software development experience, including strong senior-level expertise in Java backend development Strong hands-on production experience with Apache Kafka Proven experience designing and building microservices, scalable backend services, and event-driven architectures Practical experience working with distributed systems, enterprise integrations, and data processing solutions Ability to contribute independently to technical design and solution architecture discussions Very good English communication skills, enabling effective collaboration in an international environment Residence in Poland Valid Confluent Certified Developer for Apache Kafka (CCDAK) certification Nice-to-have requirements Production experience with Kafka Streams and Kafka Connect Experience with cloud-native and containerized environments, including Azure, Kubernetes, OpenShift, Docker, or Podman

🏢 Summary: Senior Java Developer role leading the delivery of resilient, highly available, event-driven microservices for a high-stakes financial environment. The position owns complex backend features end to end, from data models and APIs through deployment, monitoring, testing, and CI/CD quality practices. 🗂️ Requirements: 7+ years of commercial backend development, Proven experience building complex, distributed, scalable systems, Java 21+, Spring Boot, PostgreSQL, Kafka, OpenAPI, Vault, Kubernetes, Docker, Terraform, GitLab CI or Jenkins, Maven, Microservices architecture, Event-driven design, RESTful APIs, SCRUM, Strong collaboration skills, Fluent English 📃 Skills: Java, SpringBoot, PostgreSQL, Kafka, OpenAPI, Vault, Kubernetes, Docker, Terraform, GitLab, Jenkins, Maven, Microservices, REST, SCRUM 🏢 Description: Senior Java Developer We are looking for a Senior Java Developer (7+ years of experience) to lead the development of resilient, highly available systems and event-driven microservices in a high-stakes financial environment. Requirements: Experience: 7+ years of commercial backend development with a proven track record of building complex, distributed, and scalable systems. Tech Stack: Backend: Java 21+, Spring Boot, PostgreSQL, Kafka, OpenAPI, Vault DevOps & Cloud: Kubernetes , Docker, Terraform, GitLab CI/Jenkins, Maven Core Skills: Microservices architecture, event-driven design, RESTful APIs, SCRUM, strong collaboration skills, and fluent English. Nice to Have: Financial services/FinTech background, experience in distributed global teams, and exposure to AI/LLM integrations. Responsibilities: Architecture & Infrastructure: Lead the development of scalable, event-driven microservices engineered for high throughput and maximum uptime. Data & Security: Design robust data models while ensuring strict data consistency and security in a financial ecosystem. End-to-End Feature Ownership: Own complex backend features across their full lifecycle—from schema and API definition to deployment and production monitoring. Cross-Functional Collaboration: Partner with global stakeholders and frontend engineers to translate complex financial workflows into high-performance technical specs. Engineering Excellence: Elevate code quality through code reviews, modern CI/CD automation, and comprehensive testing (Unit, Integration, and Contract testing).

🏢 Summary: Senior Java Developer role focused on building and modernizing secure, scalable backend platforms and microservices for investment management products. The position offers hands-on architectural ownership, production support responsibilities, and collaboration across Agile engineering and business teams in a hybrid Krakow model. 🗂️ Requirements: 6+ years of commercial Java enterprise application development, Java 17+ proficiency, Advanced Spring and Spring Boot experience, REST API and backend service development experience, Microservices architecture knowledge, Object-oriented design, clean code, and design patterns, SQL query analysis and optimization, Docker and Kubernetes production experience, Kafka or event-streaming platform familiarity, CI/CD and DevOps practices experience, Secure coding and application security knowledge, Security scanning or vulnerability detection tools experience, Logging, monitoring, metrics, and distributed tracing familiarity, Business-critical production support and troubleshooting experience, Cross-functional collaboration with architects, QA, DevOps, and business teams, Very good English communication skills 📃 Skills: Java, Spring, SpringBoot, REST, SQL, Docker, Kubernetes, Kafka, CI/CD, DevOps, Microservices, Agile 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. As a Senior Java Developer , you will design and develop core backend platforms and scalable microservices. You will contribute to new product development and modernization initiatives, influence architectural decisions, and work closely with engineering and business stakeholders throughout the software development lifecycle. This is a senior, hands-on engineering role with strong ownership expectations. You will help shape technical solutions, improve engineering practices, and ensure that business-critical systems remain secure, reliable, maintainable, and ready to scale. Key takeaways: Stack: Java 17+, Spring, Spring Boot, REST APIs, SQL, Docker, Kubernetes, Kafka, CI/CD Salary: 27 000 - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office (2 days per week for parents of children up to 4 years old) Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter (30 min) Technical interview with the Manager (1h) Technical interview with the Team (1h) Responsibilities: Backend Development Design, develop, and maintain enterprise-grade applications using Java 17+, Spring, and Spring Boot. Build scalable microservices and REST APIs supporting investment management products. Apply object-oriented design, clean code principles, and established software design patterns. Develop solutions that meet demanding performance, reliability, security, and maintainability standards. Architecture and Technical Excellence Contribute to architectural decisions and translate business requirements into effective technical solutions. Drive technical improvements across existing platforms and modernization initiatives. Participate in code reviews and promote consistent engineering standards across the team. Ensure solutions follow secure coding principles and software development lifecycle best practices. Cross-Functional Collaboration Partner with architects, QA engineers, DevOps specialists, and business stakeholders throughout the development lifecycle. Work within a cross-functional Agile team delivering web, backend, and mobile platform capabilities. Communicate technical decisions, risks, and dependencies clearly to technical and non-technical stakeholders. Support knowledge sharing and mentor other engineers where required. Delivery and Production Ownership Troubleshoot and resolve complex technical and production issues. Improve logging, monitoring, metrics, and distributed tracing across services. Enhance CI/CD pipelines to streamline software delivery and deployment. Drive continuous improvements in development processes, engineering tooling, and operational reliability. Requirements: Technical Expertise At least 6 years of hands-on commercial experience developing enterprise applications in Java. Strong practical knowledge of Java 17 or newer. Advanced experience with Spring, Spring Boot, REST APIs, and backend service development. Strong understanding of microservices architecture, object-oriented design, clean code, and software design patterns. Solid SQL skills, including practical experience with query analysis and optimization. Production experience with Docker and Kubernetes. Familiarity with messaging or event-streaming platforms such as Kafka. Experience working with CI/CD pipelines and modern DevOps practices. Security and Production Engineering Understanding of secure coding principles and common application security risks. Experience using security scanning or vulnerability detection tools. Familiarity with application logging, metrics, monitoring, and distributed tracing. Experience troubleshooting and supporting business-critical production systems. Collaboration and Mindset Proven ability to take ownership of technical solutions from design through production support. Strong problem-solving skills and the ability to resolve complex engineering challenges. Ability to collaborate effectively with architects, QA, DevOps, and business teams. Very good English communication skills. What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Join a senior engineering team building secure and scalable platforms for the investment management industry. Please apply via our careers page and submit your CV in English.

🏢 Summary: Long-term, fully remote B2B opportunity for a Senior Java Developer based in the EU. The role focuses on building and deploying high-quality, event-driven backend microservices using Java and Confluent Kafka, with responsibility for testing, security, observability, and scalable data processing. 🗂️ Requirements: 10+ years of relevant experience, Java backend development expertise, Confluent Kafka expertise, Kafka Streams expertise, MongoDB Atlas knowledge, PostgreSQL knowledge, Kafka certification 📃 Skills: Java, Kafka, Confluent, KStreams, MongoDB, PostgreSQL, CICD, Microservices, OIDC, OAuth2, SAML, Docker, Kubernetes, ELK 🏢 Description: Project details B2B - Long term Full Remote (EU) Summary: The Senior Java Developer role is focused on enhancing the software development processes within the organization, specifically targeting candidates who have substantial practical experience. The primary objective is to develop and deploy high-quality backend applications leveraging advanced technologies, particularly Kafka. Responsibilities: Building, testing, and deploying software using standard CI/CD pipelines. Developing microservices for data processing, database interaction, and application data exposure. Applying architectural patterns suitable for event-based data streaming and web services. Ensuring logs are created, easily understandable, integrated with the logging platform, and setting up necessary alerts. Testing software focusing on functionality, quality, fault tolerance, performance, and scalability. Integrating security features like federated authentication and role-based access control. Participating in a guild for backend developers to exchange knowledge and best practices across teams. Key Requirements: 10+ years of relevant experience Expertise in Kafka, specifically Confluent Kafka (KStreams etc.) Strong knowledge of Java for backend applications Familiarity with MongoDB Atlas and PostgreSQL Kafka Certification Nice to Have: Experience with OIDC, OAuth2, SAML for authentication Knowledge of Docker for containerization Familiarity with Kubernetes for container orchestration Experience with the ELK stack for logging, monitoring, and alerting

🏢 Summary: Long-term Java Developer / Architect opportunity to modernize a large-scale financial platform through new backend features, microservices, integrations, and legacy refactoring. The role covers architecture, development, testing, production troubleshooting, releases, and code reviews in an international Scrum environment, with mentoring responsibilities for Expert-level candidates. 🗂️ Requirements: 5+ years of experience for Senior level or 10+ years for Expert level, Java, Spring Boot, Spring Integration, Oracle / SQL, Kafka / IBM MQ, REST API, Jenkins, Maven, Git, JUnit, Testcontainers, Microservices architecture, Enterprise-scale systems 📃 Skills: Java, Spring, Boot, Integration, Oracle, SQL, Kafka, IBM, MQ, REST, Jenkins, Maven, Git, JUnit, Testcontainers, Microservices, AWS, Docker, Kubernetes, Selenium, JIRA, Scrum 🏢 Description: We are looking for an experienced Java Developer / Architect to join a long-term project within the financial systems domain. The project focuses on a major platform modernization, including the development of new functionalities, architectural transformation, legacy code refactoring, and the development of modern integration microservices. Location & Work Model Warsaw or Gdańsk Hybrid work – 2 days per week from the office International working environment English as the working language We are looking for both Senior (5+ years of experience) and Expert (10+ years of experience) profiles MUST-HAVE Java Spring Boot Spring Integration Oracle / SQL Kafka / IBM MQ REST API Jenkins Maven Git JUnit Testcontainers Experience with microservices architecture and enterprise-scale systems NICE-TO-HAVE Experience in the banking or financial sector AWS Docker / Kubernetes Experience working with legacy code Selenium Responsibilities Designing and developing backend integration components in Java Developing microservices based on Spring Boot Integrating systems using REST API, Kafka, and IBM MQ Modernizing existing solutions and refactoring legacy code Analyzing business and technical requirements Analyzing logs and data flows and troubleshooting production environments Developing and maintaining automated tests using JUnit and Testcontainers Participating in deployments and supporting releases Performing code reviews and promoting software development best practices For Expert-level candidates: mentoring less experienced developers About the Project This is a long-term initiative focused on modernizing a large-scale financial platform. The upcoming years will involve the migration of business processes and volumes, combining the development of new solutions with significant architectural modernization and legacy code refactoring. The team is expanding significantly. The number of developers is expected to grow from approximately 8 to 15, while the broader area will include more than 35 specialists across Development, QA, Business Analysis, and Infrastructure Engineering. The team works in Scrum and uses JIRA. What Makes This Project Attractive? Long-term, strategic project Modern backend stack based on Java, Spring Boot, and Kafka Hands-on work with microservices architecture Real influence on the architecture of the system Strong focus on designing and building new solutions rather than maintenance only Opportunity to work at an expert level and mentor other developers Large-scale systems and a stable working environment International collaboration in English Opportunity to develop expertise in enterprise integrations and financial systems

🏢 Summary: Oferta dla Backend Developera Java obejmuje rozwój i utrzymanie aplikacji backendowych, tworzenie funkcjonalności w Spring oraz projektowanie usług REST API. Rola obejmuje integracje z systemami zewnętrznymi, pracę z relacyjnymi bazami danych, testy jednostkowe, optymalizację i usuwanie błędów. 🗂️ Requirements: Minimum 3 lata doświadczenia w tworzeniu aplikacji Java, Bardzo dobra znajomość Spring, Dobra znajomość Java, Doświadczenie w tworzeniu REST API, Znajomość Spring Boot, Znajomość Spring Data i JPA, Znajomość Hibernate, Znajomość SQL i relacyjnych baz danych, Znajomość Git, Doświadczenie w tworzeniu testów jednostkowych, Znajomość dobrych praktyk programistycznych i OOP 📃 Skills: Java, Spring, REST, JPA, Hibernate, SQL, Git, OOP 🏢 Description: Opis projektu Poszukujemy Specjalisty Backend Developer Java odpowiedzialnego za rozwój i utrzymanie aplikacji backendowych w technologii Java oraz Spring . Rola obejmuje implementację nowych funkcjonalności, rozwój usług backendowych oraz integrację z innymi systemami i usługami. Zakres współpracy rozwój i utrzymanie aplikacji backendowych w Java implementacja nowych funkcjonalności z wykorzystaniem Spring projektowanie i rozwój usług REST API integracja aplikacji z zewnętrznymi systemami i usługami praca z relacyjnymi bazami danych tworzenie oraz utrzymywanie testów jednostkowych diagnozowanie i usuwanie błędów optymalizacja istniejących rozwiązań dbanie o jakość, czytelność i utrzymywalność kodu współpraca z pozostałymi członkami zespołu projektowego Wymagania obligatoryjne minimum 3 lata doświadczenia w tworzeniu aplikacji w technologii Java bardzo dobra znajomość Spring dobra znajomość Java doświadczenie w tworzeniu REST API znajomość Spring Boot znajomość Spring Data / JPA znajomość Hibernate znajomość SQL i relacyjnych baz danych znajomość systemu kontroli wersji Git doświadczenie w tworzeniu testów jednostkowych znajomość dobrych praktyk programistycznych i programowania obiektowego ( OOP )

🏢 Summary: Oferta dla Senior Fullstack Developera do rozwoju skalowalnej platformy analitycznej dla globalnych organizacji, w proporcji ok. 60% Angular i 40% Java. Rola obejmuje rozwój systemów przetwarzających duże wolumeny danych, rozwiązywanie problemów produkcyjnych oraz wpływ na architekturę produktu. Praca hybrydowa w Warszawie, 2–3 dni tygodniowo z biura. 🗂️ Requirements: Minimum 7 lat komercyjnego doświadczenia w Fullstack Development lub rozwoju aplikacji frontendowych i backendowych, Bardzo dobra znajomość Angular 19+ i TypeScript, Komercyjne doświadczenie backendowe w Java, Doświadczenie z architekturą Nx monorepo i SCSS, Znajomość systemów rozproszonych lub środowisk chmurowych, Umiejętność samodzielnego rozwiązywania złożonych problemów technicznych i pracy z systemami produkcyjnymi, Doświadczenie w zespołach agile’owych, Bardzo dobra komunikacja techniczna, Znajomość języka polskiego i angielskiego na poziomie minimum C1, Dostępność od zaraz lub maksymalnie w ciągu miesiąca, Gotowość do pracy hybrydowej w Warszawie 2–3 dni w tygodniu 📃 Skills: Angular, TypeScript, Java, Nx, SCSS 🏢 Description: Nasz Klient to międzynarodowa firma produktowa rozwijająca zaawansowane rozwiązania technologiczne wspierające analizę danych, monitorowanie procesów oraz podejmowanie decyzji biznesowych w środowisku o dużej skali. Projekt dotyczy rozwoju nowoczesnej platformy wykorzystywanej przez organizacje działające na wielu rynkach. Tworzone rozwiązanie przetwarza duże wolumeny danych i wspiera użytkowników w analizie informacji oraz identyfikowaniu potencjalnych ryzyk biznesowych. Do realizacji projektu zapraszamy osoby posiadające doświadczenie jako Senior Fullstack Developer (Angular + Java), które chcą pracować nad rozwijanym produktem, mieć wpływ na decyzje techniczne oraz uczestniczyć w budowie systemów działających produkcyjnie na dużą skalę. 📍 Tryb Współpracy: Warszawa – model hybrydowy (2–3 dni w tygodniu z biura) ⏱️ Dostępność: Poszukujemy osób dostępnych od zaraz lub z maksymalnie 1-miesięczną dostępnością 🧑‍💻 CZYM BĘDZIESZ SIĘ ZAJMOWAĆ? Projektowaniem i rozwijaniem funkcjonalności fullstack z wykorzystaniem Angular i Java (ok. 60% frontend / 40% backend) w ramach platformy wykorzystywanej przez globalne organizacje Tworzeniem skalowalnych komponentów frontendowych w architekturze Nx monorepo oraz dbaniem o jakość, wydajność i utrzymywalność kodu Rozwiązywaniem problemów produkcyjnych, analizowaniem przyczyn źródłowych oraz wdrażaniem długoterminowych usprawnień systemowych Pracą z systemami rozproszonymi i dużymi wolumenami danych w środowisku chmurowym Współpracą z międzynarodowymi zespołami projektowymi w języku angielskim Udziałem w podejmowaniu decyzji technicznych i realnym wpływem na rozwój architektury produktu 🔍 CZEGO OD CIEBIE OCZEKUJEMY? Must have: Minimum 7 lat doświadczenia komercyjnego w obszarze Fullstack Development lub rozwoju aplikacji frontendowych i backendowych Bardzo dobra znajomość Angular (preferowana wersja 19+) oraz TypeScript Komercyjne doświadczenie w developmentcie backendowym z wykorzystaniem Java Doświadczenie w pracy z architekturą Nx monorepo oraz nowoczesnym stylingiem frontendowym (np. SCSS ) Znajomość systemów rozproszonych lub środowisk chmurowych Umiejętność samodzielnego rozwiązywania złożonych problemów technicznych i pracy z systemami produkcyjnymi Doświadczenie w pracy w zespołach agile’owych oraz bardzo dobra komunikacja techniczna Znajomość języka angielskiego i polskiego na poziomie minimum C1 (codzienna współpraca w środowisku międzynarodowym) Nice to have: Znajomość Spring Boot , Python , Kafka , Elasticsearch lub innych technologii związanych z przetwarzaniem danych Doświadczenie z konteneryzacją i orkiestracją, np. Docker oraz Kubernetes Praktyczna znajomość rozwiązań chmurowych, szczególnie Google Cloud Platform (GCP) lub Terraform Znajomość baz danych SQL oraz narzędzi monitoringowych, np. Grafana Doświadczenie w branży fintech, banking lub financial crime prevention 🤝 DLACZEGO WARTO? Udział w projekcie związanym z rozwojem produktu wykorzystywanego przez organizacje działające na wielu rynkach Udział w budowie systemów przetwarzających duże wolumeny danych i wspierających zaawansowane procesy biznesowe Międzynarodowe środowisko współpracy oraz codzienny kontakt z zespołami z różnych krajów Duża autonomia działania i realny wpływ na decyzje technologiczne oraz rozwój produktu 📍 Dziękujemy za wszystkie zgłoszenia! Skontaktujemy się z wybranymi osobami. TQLO Sp. z o.o. – Agencja Zatrudnienia (nr KRAZ 33580)