Lider Techniczny Java / Liderka Techniczna Java

🏢 Summary: Senior technical role leading the design, optimization, and delivery of core business applications within a large IT transformation program. The position focuses on Java-based microservices, cloud and DevOps adoption, and collaboration with architecture and infrastructure teams. It combines hands-on development expertise with technical leadership across strategic platforms. 🗂️ Requirements: 6+ years of experience with Java microservices, Strong experience with JEE and Spring Boot, Experience in API and REST development, Proficiency in Kubernetes, Proficiency in Python, Experience with cloud migration projects, Hands-on experience with Oracle Database and WebLogic, Experience with messaging systems such as IBM MQ or WebSphere, Knowledge of IT security standards, Understanding of functional and technical architecture principles, Fluency in English 📃 Skills: Java, JEE, SpringBoot, REST, API, Microservices, Kubernetes, Python, Oracle, WebLogic, IBMMQ, WebSphere, DevOps, Agile, CloudMigration, Architecture, Security 🏢 Description: Key Responsibilities: Technical Leadership: Provides expert technical guidelines and support to IT analysts and development teams. Application Optimization: Identifies improvement and optimization opportunities for major core business applications. Strategic Delivery: Contributes to the delivery of high-priority projects within core business platforms. Infrastructure Collaboration: Partners with Architects, Security, and Infrastructure teams to design and evolve technical solutions. IT Transformation: Drives the adoption of DevOps, Agile methodologies, and AI readiness as part of broader group transformation programs. Technical Requirements: Java Expertise: Over 6 years of experience with Java microservices, JEE, Spring Boot, and API/REST development. Cloud & DevOps: Proficiency in Kubernetes and Python, with cloud migration expertise and DevOps knowledge listed as significant advantages. Data & Middleware: Experience with Oracle components (Database, WebLogic) and messaging flows such as IBM MQ or WebSphere. Standards & Architecture: Deep awareness of IT security standards, quality metrics, and functional/technical architecture principles. Professional Skills: Fluency in English with the ability to present complex technical topics to senior stakeholders.

🏢 Summary: Oferta dotyczy rozwoju, utrzymania i integracji systemów IT opartych na Java i Spring. Obejmuje wdrożenia u klientów, testowanie, usuwanie błędów, tworzenie dokumentacji oraz wsparcie użytkowników w projektach realizowanych metodyką Agile. 🗂️ Requirements: Java, Spring, Angular, Kubernetes, PostgreSQL, testy manualne i automatyczne, praca w Agile, JIRA 📃 Skills: Java, Spring, Angular, Kubernetes, PostgreSQL, JIRA 🏢 Description: Opis Analiza, projektowanie oraz rozwój aplikacji i systemów opartych o Java i Spring. Rozwijanie, utrzymanie oraz modyfikacja istniejących systemów, a także ich integracja z innymi aplikacjami i rejestrami. Zakres obowiązków • Instalacja, konfiguracja i wdrażanie aplikacji na środowiskach klienta. • Tworzenie oraz aktualizacja dokumentacji technicznej, projektowej i powdrożeniowej. • Przygotowywanie i wykonywanie testów manualnych oraz automatycznych. • Diagnozowanie, analiza i usuwanie błędów w istniejących rozwiązaniach. • Współpraca przy projektowaniu i rozwoju architektury systemów IT. • Wsparcie użytkowników końcowych oraz obsługa zgłoszeń związanych z funkcjonowaniem systemów. • Praca w środowisku Agile z wykorzystaniem narzędzia JIRA do realizacji i raportowania zadań. Technologie i projekty Udział w projektach związanych z rozwojem oraz utrzymaniem systemów opartych o technologie Java, Spring, Angular, Kubernetes i PostgreSQL.

🏢 Summary: Backend Java Developer role focused on building scalable, high-performance server-side applications using Spring Boot. The position involves database design, API development (REST/SOAP), search optimization with ElasticSearch, and maintaining high code quality within CI/CD environments. The role requires strong experience in the Java ecosystem and collaboration with cross-functional teams. 🗂️ Requirements: Minimum 4 years of backend development experience with Java, Strong hands-on experience with Spring Boot, Practical experience with Hibernate ORM, Experience with MS SQL databases, Experience with ElasticSearch or similar search engines, Proficiency in REST and SOAP API development, Experience working with JSON and XML, Basic knowledge of HTML, CSS, JavaScript, Experience with Git version control, Understanding of CI/CD pipelines and tools like Jenkins or TeamCity, Experience with Docker 📃 Skills: Java, Spring, SpringBoot, Hibernate, MSSQL, ElasticSearch, REST, SOAP, JSON, XML, HTML, CSS, JavaScript, Git, Jenkins, TeamCity, Docker 🏢 Description: Key Responsibilities Core Backend Development: Designing and developing robust, scalable, and high-performance server-side applications using Java and the Spring Boot framework. Database Management: Designing efficient database schemas, writing optimized queries, and managing data persistence using Hibernate and MS SQL. API Design & Integration: Building, integrating, and maintaining secure RESTful and SOAP web services (WebApi, WCF) to ensure seamless communication between systems. Search Optimization: Implementing and tuning efficient search and indexing solutions utilizing ElasticSearch. Code Quality & Mentorship: Writing clean, maintainable, and well-tested code while participating in code reviews to ensure alignment with industry best practices. Requirements Experience: Minimum 4 years of professional experience in backend development with a strong focus on the Java ecosystem. Frameworks & ORM: Deep understanding and hands-on experience with Spring Boot and Hibernate. Databases & Search: Practical knowledge of MS SQL and experience with ElasticSearch or similar search engines. Web Services & Formats: Proficiency in developing APIs (REST/SOAP) and working comfortably with JSON and XML data formats. Front-End Basics: General understanding of web technologies (HTML, CSS, JavaScript) to effectively collaborate with front-end teams. Tools & Version Control: Strong command of Git and a solid understanding of CI/CD workflows (e.g., Jenkins/TeamCity, Docker).

🏢 Summary: Mid-level Java Developer role focused on building and delivering software aligned with a long-term product roadmap, ensuring high-quality, user-centric solutions. The position involves full-cycle development, task estimation, and close collaboration within a cross-functional team. The role also requires active participation in CI/CD processes and hybrid work availability. 🗂️ Requirements: Mid-level experience with Java 8/17, Experience with Spring Boot and Hibernate, Experience with Maven and functional libraries, Proficiency in Oracle PL/SQL, Experience with Swagger for API documentation, Practical knowledge of CI/CD tools, Ability to work in hybrid model at least one day per week, Fluent English communication skills 📃 Skills: Java, Spring, Hibernate, Maven, Vavr, Oracle, PLSQL, Swagger, Bitbucket, Jenkins, Sonar, Kubernetes, ELK, CI/CD 🏢 Description: Key Responsibilities: Software Development: Build and deliver software according to project requirements and a multi-year product roadmap. User-Centric Design: Collaborate with the team to shape software functionality to best meet user expectations. Quality Assurance: Maintain high-quality solutions through thorough test coverage, code reviews, and a focus on user needs. Project Management: Perform task estimation, planning, and provide proactive status reporting to the team. Team Collaboration: Foster a supportive environment by sharing knowledge and assisting other team members. Technical Requirements: Java Stack: Solid mid-level experience with Java 8/17, Spring Boot, Hibernate, Maven, and functional libraries like vavr. Data & Messaging: Proficiency in Oracle PL/SQL, and API documentation using Swagger. DevOps Ecosystem: Practical knowledge of CI/CD tools including Bitbucket, Jenkins, Sonar, Kubernetes, and ELK. Soft Skills: A collaborative "team player" attitude with the ability to communicate fluently in English. Work Model: Ability to work in a hybrid setup, including at least one day per week.

🏢 Summary: Technical leadership role responsible for the full software development lifecycle, including design, development and deployment of scalable fullstack solutions. The position combines hands-on backend development with mentoring a small team and shaping microservices architecture. Strong focus on code quality, engineering best practices and modern cloud-based environments. 🗂️ Requirements: 8+ years of experience with Java and Spring (including Spring Boot), Experience in microservices architecture and REST API integration, Experience with ORM tools, Experience with SQL and NoSQL databases, Experience with CI/CD tools, Experience with cloud environments and containerization (AWS, Docker, Kubernetes) 📃 Skills: Java, Spring, SpringBoot, Microservices, REST, Hibernate, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, Redis, ElasticSearch, Jenkins, TeamCity, AzureDevOps, CircleCI, Octopus, AWS, Docker, Kubernetes 🏢 Description: Rola obejmuje pełną odpowiedzialność za cykl życia oprogramowania, dbałość o jakość kodu oraz aktywny udział w kształtowaniu kierunku rozwoju technologicznego projektów. Zakres obowiązków Prowadzenie i mentoring zespołu (do 5 developerów) w projektach fullstackowych Projektowanie, rozwój i wdrażanie skalowalnych rozwiązań programistycznych Odpowiedzialność za pełen cykl życia oprogramowania – od koncepcji po wdrożenie Zapewnianie wysokiej jakości kodu oraz dobrych praktyk inżynierskich Współpraca z architektami, Product Ownerami oraz innymi zespołami Pełnienie roli kluczowego partnera technicznego dla interesariuszy Ustalanie celów zespołu oraz monitorowanie jego efektywności Wymagania Bardzo dobra znajomość Java oraz Spring (w tym Spring Boot) (8+y) Doświadczenie w projektowaniu architektury mikroserwisowej oraz integracji systemów (REST APIs) Znajomość narzędzi ORM (np. Hibernate, nHibernate, Entity Framework ) Doświadczenie w pracy z bazami danych SQL i NoSQL (np. PostgreSQL, MySQL, MongoDB, Redis, ElasticSearch) Doświadczenie z narzędziami CI/CD (np. Jenkins, TeamCity, Azure DevOps, CircleCI, Octopus) Znajomość środowisk chmurowych i DevOps: AWS, Docker, Kubernetes Podstawowa znajomość frameworków frontendowych (React, Angular lub Vue) – mile widziana Biegła znajomość języka polskiego i angielskiego

🏢 Summary: Senior Java Tech Lead role focused on leading backend development, defining technical architecture, mentoring engineers, and delivering scalable microservices solutions in an Agile environment. The position combines hands-on Java development with technical leadership, code quality oversight, and collaboration with stakeholders. Experience with Spring, Oracle SQL, distributed systems, and backend security is required. 🗂️ Requirements: Experience leading technical teams, Strong Java 11-25 expertise, Advanced knowledge of memory management, Advanced knowledge of concurrency, JDBC experience, Experience with Spring Boot, Experience with JPA, Experience with Hibernate, RDBMS knowledge, Oracle SQL development, Query optimization skills, Microservices architecture knowledge, Asynchronous messaging experience, REST API development, OpenAPI knowledge, API-First approach experience, Git proficiency, Maven proficiency, Backend security knowledge, Unit testing experience, Integration testing experience, Fluent English 📃 Skills: Java, JDBC, Spring, SpringBoot, JPA, Hibernate, Oracle, SQL, Microservices, REST, OpenAPI, Swagger, Git, Maven, Kubernetes, Ansible, OpenSearch, Jenkins, SonarQube 🏢 Description: Java Tech Lead We are looking for a seasoned Java Developer with natural leadership qualities. In this role, you won't just write clean, scalable code—you will champion the technical direction, unblock your engineering team, and act as a bridge between technical execution and business vision. Key Responsibilities Technical Leadership: Spearhead architectural and solutioning discussions with stakeholders to map out the best technical paths. Team Empowerment: Actively remove bottlenecks within the delivery pipeline and mentor team members to help elevate their technical skills. Quality Assurance: Guard technical standards, ensuring all deliverables align with security benchmarks, code quality metrics, and engineering best practices. Backend Development: Drive hands-on development across multiple applications, tackling both brand-new greenfield projects and the evolution of existing systems. Collaboration & Process: Drive proactive technical analysis, conduct thorough code reviews, and actively participate in Scrum ceremonies. Requirements Leadership & Soft Skills: Exceptional communication and coordination skills. Proven ability to identify the technical critical path and take decisive steps to ensure successful delivery. A strong sense of ownership, multitasking abilities, and a highly proactive, self-sufficient mindset. Technical Expertise: Strong command of Java (from version 11 up to 25) and advanced concepts, including memory management, concurrency, and JDBC. Extensive experience with the Spring ecosystem (Spring Boot 2 to 4) and JPA/Hibernate . Solid RDBMS experience, with a specific focus on Oracle SQL development and query optimization . Deep understanding of microservices architecture , asynchronous messaging systems, and web communication ( REST, OpenAPI/Swagger, and API-First approach ). Everyday proficiency with Git and Maven . Sound knowledge of backend security practices and a commitment to writing clean, high-coverage unit and integration tests. Fluency in English (both written and spoken). Nice to Have Hands-on experience with cloud-native and infrastructure tools like Kubernetes , Ansible , or OpenSearch . Familiarity with build and deployment automation ( CI/CD via Jenkins, SonarQube ). Experience implementing automated testing frameworks. Past involvement in high-level technical architecture and design. Experience working within geographically distributed, international teams.

🏢 Summary: Backend Developer (Java) role focused on building and developing a backend system based on Java technologies, with responsibility for code quality and architectural consistency. The position combines hands-on development with technical leadership and team support within a collaborative development environment. 🗂️ Requirements: Minimum 5 years of commercial experience as Backend Developer (Java), Experience in managing a development team, Experience as technical leader or team mentor, Very good knowledge of Java (min. version 8), Knowledge of Spring and Spring Boot, Knowledge of relational databases, Experience with unit testing, Knowledge of static code analysis tools (e.g., SonarQube) 📃 Skills: Java, Spring, SpringBoot, SQL, JUnit, SonarQube 🏢 Description: O projekcie Projekt dotyczy budowy systemu informatycznego w architekturze backendowej opartej o technologie Java. Prace realizowane są w środowisku zespołu developerskiego, z naciskiem na jakość kodu, wydajność oraz spójność architektoniczną rozwiązania. Twój zakres obowiązków Realizacja prac programistycznych Wsparcie zespołu w organizacji pracy Nadzór nad jakością i architekturą rozwiązania Nasze wymagania Minimum 5 lat doświadczenia komercyjnego jako Backend Developer (Java) Doświadczenie w zarządzaniu zespołem developerskim Doświadczenie w pracy w roli lidera technicznego lub mentora zespołu - wymaganie konieczne! Bardzo dobra znajomość Java (min. wersja 8) Znajomość Spring oraz Spring Boot Znajomość relacyjnych baz danych Doświadczenie w pracy z testami jednostkowymi Znajomość narzędzi do statycznej analizy kodu (np. SonarQube) Mile widziane Doświadczenie w pracy w metodykach zwinnych (Agile / Scrum) Znajomość dobrych praktyk programistycznych oraz architektury backend Umiejętność praktycznego wykorzystania wiedzy technicznej w projektach

🏢 Summary: Role for an experienced Project Tech Lead focused on leading Java and Spring Boot projects for the aviation industry. The position combines hands-on technical leadership, team coordination, microservices architecture design, and collaboration with architects and stakeholders in an Agile environment. Offers hybrid work, influence on technical decisions, and participation in complex large-scale projects. 🗂️ Requirements: Minimum 5 years of experience with Java, Minimum 5 years of experience with Spring Boot, Experience as Tech Lead or development team leader, Knowledge of microservices architecture, Experience with cloud solutions, Ability to plan, estimate, and report team work, Knowledge of software development lifecycle, Knowledge of Agile methodologies, Ability to make technical decisions, Ability to collaborate with stakeholders 📃 Skills: Java, Spring, SpringBoot, Microservices, Cloud, Agile 🏢 Description: Project Tech Lead (Java / Spring Boot) Dołącz do zespołu realizującego projekty o dużej skali i realnym wpływie dla klienta z branży lotniczej. Szukamy doświadczonego Project Tech Leada , który połączy kompetencje techniczne z umiejętnością prowadzenia zespołu. Jeśli masz doświadczenie w projektowaniu nowoczesnych rozwiązań opartych o Java i Spring Boot, potrafisz wspierać developerów oraz dbać o wysoką jakość dostarczanego oprogramowania – ta rola jest dla Ciebie. Twoje zadania Koordynowanie pracy zespołu technicznego w ramach realizowanych projektów. Planowanie prac, estymacja zadań oraz monitorowanie postępów zespołu. Zapewnianie wysokiej jakości implementacji zgodnej z wymaganiami biznesowymi i architektonicznymi. Wspieranie zespołu w rozwiązywaniu problemów technicznych oraz podejmowaniu decyzji projektowych. Współpraca z Architektem przy projektowaniu rozwiązań i wyborze technologii. Bieżąca komunikacja z Product Ownerem i interesariuszami w zakresie kwestii technicznych. Udział w code review, mentoringu oraz przygotowywaniu proof of concept. Nasze oczekiwania Minimum 5 lat doświadczenia w tworzeniu oprogramowania w technologiach Java i Spring Boot . Doświadczenie w roli Tech Leada lub lidera zespołu developerskiego. Bardzo dobra znajomość architektury mikroserwisowej oraz rozwiązań chmurowych. Umiejętność planowania, estymacji i raportowania prac zespołu. Znajomość procesu wytwarzania oprogramowania oraz metodyk Agile. Umiejętność podejmowania decyzji technicznych i skutecznej współpracy z różnymi interesariuszami. Oferujemy Stabilne zatrudnienie przy projektach o wysokim poziomie złożoności i znaczeniu. Pracę w modelu hybrydowym – 2 dni w tygodniu w biurze . Realny wpływ na rozwiązania techniczne oraz kierunek rozwoju projektu. Współpracę z doświadczonym zespołem specjalistów. Możliwości rozwoju zawodowego i udział w ambitnych przedsięwzięciach. Preferencyjne pakiety do wykupienia w programach Multisport oraz Lux Med . Przyjazną atmosferę pracy i dużą samodzielność w działaniu.

🏢 Summary: Hybrid Java Tech Lead role in Warsaw focused on leading backend development, driving architectural decisions, and delivering secure, scalable enterprise applications using Java and Spring Boot. The position combines hands-on engineering with technical leadership, mentoring, and collaboration across Agile teams. Candidates will work on mission-critical systems while improving software quality and delivery processes. 🗂️ Requirements: 7+ years of Java backend development experience, Experience as Tech Lead or technical initiative leader, Core Java expertise, Spring Framework experience, JPA and Hibernate experience, Oracle database and SQL optimization knowledge, REST API development experience, Microservices architecture knowledge, Git proficiency, Maven proficiency, Scrum experience, Backend security knowledge, Unit and integration testing experience, Fluent English 📃 Skills: Java, Spring, SpringBoot, JDBC, Hibernate, JPA, Oracle, SQL, REST, OpenAPI, Swagger, Microservices, Git, Maven, Scrum, Kubernetes, OpenSearch, Ansible, Jenkins, Sonar 🏢 Description: Empower innovative software solutions — shape the future of Java development! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week) As a Java Tech Lead within our client's software development team, you will be working for a leading industry innovator delivering mission-critical enterprise applications. You will combine hands-on backend development with technical leadership, driving architectural decisions, mentoring developers, and ensuring engineering excellence across multiple applications. Working closely with stakeholders and Agile teams, you will remove delivery blockers, define technical direction, and build secure, scalable Java solutions that support long-term business growth and operational efficiency. Your main responsibilities: Lead technical solution discussions with business and engineering stakeholders Define technical direction and critical delivery paths for development initiatives Mentor developers and support the team's technical growth Ensure high-quality, secure and maintainable software aligned with engineering best practices Develop and maintain backend applications using Java and Spring Boot Perform code reviews and drive continuous code quality improvements Participate in technical analysis, architecture discussions and solution design Remove technical blockers and support efficient delivery across the development pipeline Participate in Scrum ceremonies and collaborate closely with cross-functional teams Take ownership of technical decisions and proactively identify improvement opportunities You're ideal for this role if you have: At least 7 years of experience in Java backend development Experience acting as a Tech Lead or leading technical initiatives within development teams Strong expertise in Core Java (Java 11–25), including JDBC, concurrency and memory management Solid experience with Spring Framework (Spring Boot 2–4) Experience with JPA (Hibernate) and Oracle databases, including SQL optimization Knowledge of messaging systems, REST APIs, OpenAPI (Swagger) and API First approach Strong understanding of microservices architecture, Git, Maven and Scrum Good understanding of backend security principles and software quality practices Experience writing high-quality unit and integration tests Fluent English It is a strong plus if you have: Experience with Kubernetes Experience with OpenSearch Experience with Ansible Experience with Jenkins, Sonar or other build and deployment automation tools Experience working in geographically distributed engineering teams Experience participating in technical architecture and solution design

🏢 Summary: Java Tech Lead role focused on leading backend development and technical direction for enterprise applications in a hybrid work model. The position combines hands-on Java and Spring Boot development with architecture, mentoring, code quality, and Agile collaboration responsibilities. Candidates will work on secure, scalable microservices solutions while supporting engineering excellence and delivery efficiency. 🗂️ Requirements: 7+ years of Java backend development experience, Experience as Tech Lead or technical initiative lead, Core Java expertise, Spring Framework and Spring Boot experience, JPA and Hibernate knowledge, Oracle and SQL optimization experience, REST API development experience, OpenAPI knowledge, Microservices architecture knowledge, Git proficiency, Maven proficiency, Scrum experience, Backend security knowledge, Unit and integration testing experience, Fluent English 📃 Skills: Java, Spring, SpringBoot, JDBC, JPA, Hibernate, Oracle, SQL, REST, OpenAPI, Swagger, Microservices, Git, Maven, Scrum, Kubernetes, OpenSearch, Ansible, Jenkins, Sonar 🏢 Description: Empower innovative software solutions — shape the future of Java development! Warszawa-based opportunity with hybrid work model (up to 4 remote days per week) As a Java Tech Lead within our client's software development team, you will be working for a leading industry innovator delivering mission-critical enterprise applications. You will combine hands-on backend development with technical leadership, driving architectural decisions, mentoring developers, and ensuring engineering excellence across multiple applications. Working closely with stakeholders and Agile teams, you will remove delivery blockers, define technical direction, and build secure, scalable Java solutions that support long-term business growth and operational efficiency. Your main responsibilities: Lead technical solution discussions with business and engineering stakeholders Define technical direction and critical delivery paths for development initiatives Mentor developers and support the team's technical growth Ensure high-quality, secure and maintainable software aligned with engineering best practices Develop and maintain backend applications using Java and Spring Boot Perform code reviews and drive continuous code quality improvements Participate in technical analysis, architecture discussions and solution design Remove technical blockers and support efficient delivery across the development pipeline Participate in Scrum ceremonies and collaborate closely with cross-functional teams Take ownership of technical decisions and proactively identify improvement opportunities You're ideal for this role if you have: At least 7 years of experience in Java backend development Experience acting as a Tech Lead or leading technical initiatives within development teams Strong expertise in Core Java (Java 11–25), including JDBC, concurrency and memory management Solid experience with Spring Framework (Spring Boot 2–4) Experience with JPA (Hibernate) and Oracle databases, including SQL optimization Knowledge of messaging systems, REST APIs, OpenAPI (Swagger) and API First approach Strong understanding of microservices architecture, Git, Maven and Scrum Good understanding of backend security principles and software quality practices Experience writing high-quality unit and integration tests Fluent English It is a strong plus if you have: Experience with Kubernetes Experience with OpenSearch Experience with Ansible Experience with Jenkins, Sonar or other build and deployment automation tools Experience working in geographically distributed engineering teams Experience participating in technical architecture and solution design