Senior Java EE DeveloperAbout the ProjectWe are looking for Senior Java EE Developer to join a project from logistics industry. You will become part of the team supporting customers throughout the import, export, and customs procedures and handle invoicing across more than 130 countries. Work Mode: hybrid model from Gdańsk (frequency to be agreed)Start of the project: January 2026Job ResponsibilitiesDesign and build applications using Java EEWork within an architecture grounded in Clean Architecture principles and Domain-Driven DesignExamine current systems, solutions, business workflows, and requirements in close collaboration with internal stakeholders and external partnersMigrate existing commercial applications from a procedural technology stack to a modern, cloud-based platformCreate automated tests (unit, database, and Selenium-based integration tests)Contribute to every stage of the software development lifecycle - analysis, design, testing, deployment, maintenance, and 3rd-level supportCollaborate directly with colleagues from across the globeExpectationsMin. 5 years of experienceStrong object-oriented programming and Java EE skills (including JPA, CDI, JTA, JAX-RS, Servlet, Messaging, Batch & Stream processing, Logging & Monitoring)Experience with software design and modeling tools (e.g., UML)Knowledge of relational databases and SQLUnderstanding of software development processes, with flexibility and strong customer focusExcellent spoken and written English, with strong communication skillsNice to have: Experience with agile software development methodologies (e.g., Scrum or Kanban)Interest in cloud technologies (AWS & IBM) and microservices developmentExperience with container orchestration (Docker, Kubernetes, OpenShift)Knowledge in designing distributed computing and web service architectures, building large-scale applicationsExperience in test-driven developmentFamiliarity with messaging systems (e.g., Apache Kafka)Experience or understanding of international logisticsDevOps experience (e.g., Jenkins, Artifactory, Maven, GitLab/GitHub)We offerOngoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and developmentConsultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentorsAccess to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyleSpectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres)Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clientsRelationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 yearsA complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroadAbout 7NConstantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.