Senior Java Developer

🏢 Summary: Long-term B2B Senior Java Developer contract for building secure, high-performance backend data-processing solutions in a microservices architecture. The role involves Java and Kafka development, CI/CD delivery, database integration, testing, monitoring, and security implementation in a hybrid work model. 🗂️ Requirements: 10+ years of Java development experience, Strong Kafka expertise, Experience with Confluent Kafka, Experience with KStreams, Experience with MongoDB Atlas, Experience with PostgreSQL 📃 Skills: Java, Kafka, Confluent, KStreams, MongoDB, PostgreSQL, Microservices, CICD 🏢 Description: Contract : B2B, long term Rate : 180-200 PLN/h Mode : Hybrid, 2-3 days per week at the office Location : Warsaw Summary: The Senior Java Developer is primarily responsible for designing and developing backend applications while ensuring adherence to high standards of security, performance, and quality. This role focuses on leveraging extensive experience in Java and Kafka to build robust data processing solutions within a microservices architecture. Main Responsibilities: Building, testing, and deploying software using CI/CD pipelines. Creating microservices for data processing, database interactions, and data exposure. Implementing relevant architectural patterns for data handling and web services. Ensuring accurate logging and alert configurations for operational efficiency. Conducting comprehensive testing of software for various performance criteria. Integrating security features, including authentication and authorization controls. Participating in a developer guild to share best practices and technical knowledge. Key Requirements: 10+ years of relevant experience in Java development. Strong expertise in Kafka, particularly with Confluent Kafka and KStreams. Experience with MongoDB Atlas and PostgreSQL as database technologies. Nice to Have: Familiarity with authentication protocols such as OIDC, OAuth2, and SAML. Experience with containerization technologies like Docker. Knowledge of Kubernetes for container orchestration. Experience with the ELK stack for logging, monitoring, and alerting.

🏢 Summary: Senior Java Developer contract for a logistics project, focused on building secure, high-performance backend data-processing services in a microservices architecture. The role uses Java, Confluent Kafka/KStreams, MongoDB Atlas and PostgreSQL, with hybrid work from the Warsaw office 2–3 days per week. 🗂️ Requirements: 10+ years of Java development experience, Strong Confluent Kafka expertise, Strong KStreams expertise, MongoDB Atlas experience, PostgreSQL experience, English proficiency, Polish proficiency 📃 Skills: Java, Kafka, Confluent, KStreams, MongoDB, PostgreSQL, CI/CD, Microservices 🏢 Description: 🌍Work model: 2-3 days a week from the Warsaw office. 💰Rate: B2B - up to 190 zl/h. ⏰Start: ASAP/ 1 month. ⏳Project length: > 12 months + extensions. 📕Project language: English + Polish. 💼 Industry: Logistics. ⚙️Recruitment process: 2 interviews with the client. 🔍Workload: fulltime. Summary: The Senior Java Developer is primarily responsible for designing and developing backend applications while ensuring adherence to high standards of security, performance, and quality. This role focuses on leveraging extensive experience in Java and Kafka to build robust data processing solutions within a microservices architecture. Main Responsibilities: Building, testing, and deploying software using CI/CD pipelines. Creating microservices for data processing, database interactions, and data exposure. Implementing relevant architectural patterns for data handling and web services. Ensuring accurate logging and alert configurations for operational efficiency. Conducting comprehensive testing of software for various performance criteria. Integrating security features, including authentication and authorization controls. Participating in a developer guild to share best practices and technical knowledge. Key Requirements: 10+ years of relevant experience in Java development. Strong expertise in Kafka, particularly with Confluent Kafka and KStreams. Experience with MongoDB Atlas and PostgreSQL as database technologies. Nice to Have: Familiarity with authentication protocols such as OIDC, OAuth2, and SAML. Experience with containerization technologies like Docker. Knowledge of Kubernetes for container orchestration. Experience with the ELK stack for logging, monitoring, and alerting.

🏢 Summary: Oferta B2B dla doświadczonego Lidera Technicznego Java / Starszego Programisty Backend przy rozwoju i utrzymaniu kluczowych systemów ochrony zdrowia. Rola łączy projektowanie i rozwój backendu Java z technicznym prowadzeniem zespołu, dbaniem o architekturę, jakość kodu i wydajność aplikacji. Stawka wynosi do 170 PLN netto + VAT za godzinę. 🗂️ Requirements: Minimum 5 lat doświadczenia jako Backend Developer Java, Doświadczenie w zarządzaniu lub technicznym prowadzeniu zespołu programistów, Bardzo dobra znajomość Java 8 lub nowszej, Praktyczna znajomość Spring i Spring Boot, Doświadczenie z relacyjnymi bazami danych, Znajomość testów jednostkowych, Doświadczenie z narzędziami statycznej analizy kodu, Znajomość dobrych praktyk projektowania aplikacji backendowych 📃 Skills: Java, Spring, SpringBoot, PostgreSQL, Oracle, MSSQL, JUnit, Mockito, SonarQube, Agile, Scrum 🏢 Description: 📍 Lokalizacja: 100% zdalnie 💼 Forma współpracy: B2B 💰 Stawka: do 170 PLN/h netto + VAT Dołącz do projektu realizowanego dla sektora publicznego, którego celem jest rozwój i utrzymanie kluczowych systemów wspierających ochronę zdrowia w Polsce. Poszukujemy doświadczonego Lidera Technicznego Java / Starszego Programisty Backend, który poza rozwijaniem oprogramowania będzie wspierał zespół programistów, podejmował decyzje techniczne oraz dbał o jakość i architekturę tworzonych rozwiązań. Wymagania: Minimum 5 lat doświadczenia jako Backend Developer (Java). Doświadczenie w zarządzaniu lub technicznym prowadzeniu zespołu programistów. Bardzo dobra znajomość Java 8 lub nowszej. Praktyczna znajomość Spring oraz Spring Boot. Doświadczenie w pracy z relacyjnymi bazami danych (PostgreSQL, Oracle lub MS SQL). Znajomość testów jednostkowych z wykorzystaniem JUnit, Mockito lub podobnych narzędzi. Doświadczenie z narzędziami statycznej analizy kodu (np. SonarQube). Znajomość dobrych praktyk projektowania i tworzenia aplikacji backendowych. Obowiązki: Projektowanie, rozwój i utrzymanie aplikacji backendowych w technologii Java. Pełnienie roli lidera technicznego dla zespołu programistów. Współpraca z analitykami, architektami oraz interesariuszami biznesowymi. Dbanie o wysoką jakość kodu oraz stosowanie dobrych praktyk programistycznych. Udział w przeglądach kodu (Code Review) oraz mentoring członków zespołu. Współpraca z zespołem w metodyce Agile/Scrum. Projektowanie i rozwój architektury backendowej. Rozwiązywanie problemów technicznych oraz optymalizacja wydajności aplikacji. Oferujemy: Stawkę do 170 netto + VAT/h Przelew w dogodnej formie Krótki 14-dniowy termin płatności faktury Bogaty pakiet usług prywatnej opieki medycznej Dostęp do platformy kafeteryjnej MyBenefit (umożliwiającej zamawianie kart Multisport, kart przedpłaconych do Ikea, Zalando, Notino i wielu innych)

🏢 Summary: Oferta B2B dla Senior Java Developera obejmuje rozwój rozwiązań bankowości elektronicznej dla klientów korporacyjnych. Rola łączy tworzenie i projektowanie oprogramowania Java z testowaniem, integracjami, pracą z bazami danych oraz wsparciem zespołu; wymaga wizyt w biurze raz w tygodniu. 🗂️ Requirements: Minimum 5 lat doświadczenia jako Java Developer, Wykształcenie wyższe: informatyka, matematyka lub kierunek pokrewny, Doświadczenie w tworzeniu aplikacji Java, Dobra lub bardzo dobra znajomość relacyjnych baz danych i SQL, Znajomość projektowania baz danych, transakcji i blokad, Znajomość REST, JSON, SOAP, XML i XSD, Doświadczenie w Code Review, Doświadczenie w refaktoryzacji kodu, Znajomość wzorców projektowych i architektonicznych, Znajomość aplikacji rozproszonych i mikroserwisów, Doświadczenie w pracy z Jira i Confluence 📃 Skills: Java, SQL, REST, JSON, SOAP, XML, XSD, Microservices, Jira, Confluence 🏢 Description: Informacje o projekcie: Branża: bankowość Stawka: do ok. 160 zł/h netto + VAT, B2B Lokalizacja: wizyty raz w tygodniu w biurze w jednym z biur (Warszawa, Łódź, Gdańsk, Bydgoszcz, Katowice, Lublin, Wrocław, Szczecin) Poszukujemy Senior Java Developera do zespołu odpowiedzialnego za rozwój rozwiązań wspierających bankowość elektroniczną dla klientów korporacyjnych. Zakres obowiązków Tworzenie wysokiej jakości kodu. Projektowanie i dokumentowanie rozwiązań technicznych. Przeprowadzanie testów jednostkowych. Współpraca z Analitykami Biznesowymi, Architektami IT oraz innymi członkami zespołu projektowego. Współpraca z klientem biznesowym. Udział w przeglądach kodu (Code Review). Refaktoryzacja istniejących rozwiązań. Wsparcie techniczne mniej doświadczonych programistów oraz dzielenie się wiedzą w zespole. Udział w projektowaniu nowych rozwiązań systemowych. Wymagane kompetencje Minimum 5 lat doświadczenia zawodowego na stanowisku Java Developera. Wykształcenie wyższe kierunkowe (informatyka, matematyka lub kierunki pokrewne). Doświadczenie w tworzeniu aplikacji w technologii Java. Dobra lub bardzo dobra znajomość relacyjnych baz danych, w szczególności: pisania zapytań SQL, projektowania baz danych, tworzenia struktur danych (tabele, indeksy itp.), zagadnień związanych z transakcjami i blokadami bazodanowymi. Znajomość zagadnień integracyjnych opartych o: REST, JSON, SOAP Web Services, XML, XSD. Doświadczenie w przeglądach kodu (Code Review). Doświadczenie w refaktoryzacji kodu. Znajomość wzorców projektowych. Znajomość wzorców architektonicznych. Znajomość zagadnień związanych z aplikacjami rozproszonymi (Microservices). Doświadczenie w pracy z Jira i Confluence. Mile widziane Doświadczenie z Apache Kafka. Doświadczenie w projektowaniu rozwiązań z wykorzystaniem UML. Doświadczenie w pracy z Enterprise Architect.

🏢 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: Hybrid Senior Java Developer role focused on building scalable RESTful microservices and basic Angular front-end features for secure, high-performance web applications. The position uses Java 17, Spring, Angular, Oracle, and Jenkins within Agile and DevOps delivery workflows. 🗂️ Requirements: 6–8 years of Java development experience, Java 11+ / JDK 8+ experience, Angular 8+ experience, TypeScript and modern front-end development experience, Spring Framework experience: Boot, Batch, Security, 2–3 years of RESTful microservices experience, Hibernate and JUnit knowledge, SQL, PL/SQL, and Oracle database experience, Fluent English, Existing legal right to work in the European Union 📃 Skills: Java, JDK, Angular, TypeScript, JavaScript, HTML, CSS, Spring, SpringBoot, SpringBatch, SpringSecurity, REST, Microservices, JSON, XML, Hibernate, JUnit, SQL, PLSQL, Oracle, Jenkins, CI/CD, DevOps, Agile 🏢 Description: Work in a Warsaw/Kraków-based hybrid model, with up to 4 remote days per week. As a Senior Java Developer (basic Angular), you will support modern web applications and back-end services in a technology-focused environment. You will design, develop, and evolve microservices and front-end components that power reliable, secure, and high-performance solutions, using Java (currently Java 17), Angular, and RESTful architectures. - Develop and maintain back-end services using Java 11+ / Java 17 and Spring Framework, including Spring Boot, Batch, and Security. - Build and improve RESTful microservices and support microservices architecture from API design through implementation. - Implement front-end features with Angular 8+ (preferably Angular 14) using TypeScript, JavaScript, HTML, and CSS. - Work with JSON and XML data formats and contracts to ensure seamless system integration. - Create and maintain persistence layers using Hibernate and develop reliable unit tests with JUnit. - Develop and optimize database interactions using SQL and PL/SQL with Oracle databases. - Collaborate within Agile teams to deliver features efficiently and iteratively. - Apply DevOps principles in daily development workflows, including CI/CD pipelines with Jenkins. - 6–8 years of experience as a Java Developer. - Basic experience with Angular 8+; Angular 14 preferred, plus practical TypeScript and modern web front-end development. - Strong background in Java 11+; the project currently runs on Java 17, and JDK 8+. - Experience with Spring Framework, including Spring Boot, Batch, and Security. - Proven RESTful microservices experience of at least 2–3 years. - Working knowledge of Hibernate and JUnit. - Experience with SQL, PL/SQL, and Oracle databases. - Fluent English communication skills and a collaborative mindset with strong soft skills. - Existing legal right to work in the European Union. - Banking or financial industry experience and domain knowledge.

🏢 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).