Senior Java Developer with Dynamics 365

Salary: 1000-1400 PLN/MD on B2B Location: Warszawa, Gdańsk, Kraków (with 1-2 days in the office weekly) Why choose this offer? End‑to‑end ownership with a modern tech stack Stability combined with continuous growth Autonomy and high‑quality collaboration Project Join a growing engineering team responsible for building and evolving critical business capabilities around customer onboarding, payments, identity verification and CRM integrations within a modern financial platform. Responsibilities You will work on backend services supporting customer lifecycle management, KYC processes, payment orchestration and integrations with cloud-based identity and CRM solutions. The role requires close collaboration with architects, product teams and other engineers to deliver scalable, reliable and secure solutions in a regulated environment. Responsibilities you'll have: Design and develop backend services using Java and Spring BootBuild integrations with Microsoft Dynamics 365 / DataverseDevelop and maintain integrations with payment providers and KYC solutionsIntegrate authentication and identity services based on AWS CognitoDesign scalable APIs and microservicesEnsure security, reliability and compliance of business-critical systemsCollaborate with product owners, architects and cross-functional engineering teamsContribute to technical design decisions and architecture discussionsMentor less experienced engineers and share engineering best practicesLeverage AI tools to improve software delivery and engineering productivity Expected Competences And Knowledge 5+ years of commercial experience in backend developmentStrong experience with Java and Spring BootExperience designing and developing microservicesHands-on experience with Microsoft Dynamics 365 and/or Dataverse integrationsExperience with AWS Cognito or similar identity management solutionsExperience integrating external payment providersUnderstanding of KYC, onboarding or customer verification processesExperience working with cloud environments (AWS preferred)Strong knowledge of REST APIs and integration patternsGood communication skills and fluent EnglishEngineering degree is highly valued Nice To Have Experience within regulated financial servicesExperience in trading platforms, brokerage or fintech environmentsKnowledge of security and compliance requirements in financial systemsExperience using AI-assisted development tools in daily engineering work Technologies you'll work with JavaSpring BootMicroserviceMicrosoft Dynamics 365DataverseAWSAWS CognitoREST APIPayments IntegrationsKYC SolutionsCI/CDGit Client – why choose this particular client from the Jit portfolio? Our client is an international financial services organization operating in the capital markets domain, focused on processing and analyzing large volumes of transactional data. The company develops modern data platforms that support trading, operational efficiency, and regulatory reporting. It operates in a fast-paced, highly regulated environment with a strong emphasis on scalability, data quality, and advanced analytics. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.