Senior Java Developer

The RoleWe’re seeking a Senior Java Developer to join our team and dive into the exciting world of IoT. You’ll be instrumental in building an IoT solution from scratch, working with smart metering technology and large-scale data collection systems. The system uses the MQTT protocol, a standard for IoT communication, to establish secure and reliable data exchange. The primary task is to develop the interface between water measuring devices and the MDM system using MQTT, enabling automatic polling and data collection for consumption. This is a unique opportunity to specialize in MQTT, a highly sought-after IoT protocol, and contribute to innovative projects from the ground up. The team operates in an Agile environment, fostering collaboration and continuous improvement. If you’re looking for a role where you can truly shape the future of connected devices, we want to hear from you!What you will doEstablish a cutting-edge MQTT-based interface: Connect smart water meters with the MDM system, building the foundation for a smarter future.Optimize IoT communication: Develop, configure, and fine-tune MQTT communication and data polling for peak performance.Ensure robust data flows: Guarantee secure, stable, and scalable IoT data flows that you can rely on.Drive collaborative success: Work closely with client-side engineers, Business Analysts, and Product Managers to align on requirements, enhance implementation, and foster strong team collaboration.RequirementsDeep knowledge of the MQTT protocol (brokers, publishers, subscribers, QoS levels, topics, message structure).Strong background in IoT communication systems.Solid experience with data collection systems (e.g., smart metering, sensor integration).Proactive, solution-oriented approach with an innovative mindset to identify efficient solutions.Strong programming skills (Java, C++, Python, or similar). Knowledge of distributed systems and message queuing.Ability to work onsite in Hungary 1 day per week.Solid English language skills and native Hungarian language skills are essential. 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.