Java Technical Lead

The RoleWe are looking for a Java Technical Lead / Senior Backend Developer to join our backend engineering group and contribute to the design, development, and improvement of large-scale, high-performance backend systems. You will work within a cross-functional Agile team and help drive the implementation of technical solutions aligned with architectural guidelines and business objectives.In this role, you will collaborate with product owners, architects, DevOps engineers, and other developers to build reliable, scalable services and integrations. Depending on project needs, you may be assigned to one of our strategic backend initiatives, contributing either to new product development or the enhancement of existing platforms.This position is ideal for someone who enjoys taking ownership, guiding teams technically, and delivering high-quality solutions in a collaborative environment.What you will doLead the design and implementation of backend services, RESTful APIs, GraphQL endpoints, and server-side logic.Ensure backend solutions align with architectural direction, performance expectations, and long-term business goals.Guide the development of clean, scalable, and maintainable code following industry standards and best practices.Design, optimize, and maintain relational and NoSQL database schemas.Develop efficient data access layers, complex queries, and stored procedures.Work with data systems such as MSSQL, Redis, and cloud-based storage options.Integrate with third-party APIs, external services, and enterprise systems.Work with messaging platforms such as JMS, Artemis, AMQ, Azure Service Bus, or Kafka (depending on project).Support event-driven and real-time processing architectures where required.Implement unit, integration, and API tests to ensure reliability.Drive a culture of quality through code reviews, mentoring, and enforcing best practices.Contribute to continuous improvement of coding standards, processes, and tooling.Collaborate with DevOps engineers on CI/CD pipelines, deployments, and system observability.Ensure smooth delivery to test and production environments.Contribute to performance tuning, scalability improvements, and system stability.Collaborate with frontend engineers, QA, DevOps, PMs, BAs, and architects.Participate in Agile ceremonies (stand-ups, sprint planning, grooming, retrospectives).Proactively contribute to task analysis, refinement, and breaking down complex work. RequirementsStrong experience with Java (17+)Spring Framework, Spring Boot, ReactiveJ, WebFluxMaven, including multi-module setupsREST and GraphQL API developmentUnderstanding of OpenAPI principlesDatabase experience with MSSQL, Redis, and other relational/NoSQL storage technologiesExperience working with cloud platforms (Azure, AWS, or similar), including cloud-based storage and serverless or managed compute servicesFamiliarity with containerization and orchestration (Docker, Kubernetes)Experience with CI/CD pipelines (Azure Pipelines, GitHub Actions, or similar)Experience with messaging systems: JMS, Artemis, AMQ, Azure Service Bus; Kafka is a plusTesting experience with JUnit, MockitoExposure to test automation practices is a plusKnowledge of OAuth 2.0, OpenID ConnectExperience with WebSockets What we offerHybrid/flexible working model and flexible working hoursPrivate Medical and/or Health Insurance (location dependent)Length of Service AwardsReferral programmeThe option of a cafeteria package, meal tickets, or team lunches (location dependent)A culture of continuous growth, supported by our People Lead system and various training resources for your personal developmentAgile mindset, simplified processes, and a great atmosphere where commitment and autonomy are celebratedA community-first mindset, working with talented people across technology products and consultingCharity events and programsAdditional benefits based on location:HungaryExtensive cafeteria package tailored to your needs (including SZÉP card)RomaniaBookster library subscription, and the opportunity to work from abroad (max. 60 days per annum)(*) As we hire permanent employees for this role, we offer remote opportunities only in Romania and Hungary.About UsZenitech is a leading technology solutions provider dedicated to reshaping the global digital landscape. Headquartered in the UK, Zenitech operates internationally, with offices in Lithuania, Romania, and Hungary.We use a bespoke approach depending upon where the client is on their digital journey, comprising a combination of access to dedicated R&D labs, technology implementation advice, and specialist nearshore development talent. As an international community of individuals who are open to learn from each other, we collectively define and input into the digital future of the clients’ businesses.Why Zenitech?Impactful Projects: Drive meaningful change through digital transformation projects and have an opportunity to make an impact on many different industries.Collaborative Culture: Be part of a diverse, inclusive team committed to growth, innovation, and continuous learning.Professional Growth: Zenitech supports continuous learning and development through the People Lead system, helping you advance your skills and career.Diversity and InclusionZenitech celebrates diversity in all its forms. We aim to create an inclusive environment where everyone feels valued for their unique contributions and perspectives. If you require any adjustments during the application process, please let us know—we’re here to help. Our commitment to diversity, equity, inclusion, and belonging can be found here.