Backend Tech Lead (Java/Kotlin) at supercharge

Our vision is simple yet powerful: we want to create a place where engineers thrive, taking on exciting projects and using the latest technologies, free from the shackles of legacy solutions. Thanks to the diverse range of industries we work with, our days are never boring: from world-class apps to AR solutions or even programming robots, we’ve got it all covered. We don’t just write code for our screens; rather, we develop impactful products used by millions every day: let them be large-scale public transport applications, leading fintech platforms, or storage solutions contributing to a greener future. We are a team of 100+ engineers (Java, JavaScript, Android, iOS, NodeJS and dotnet platforms) and QA engineers with our coding fingers at the ready working on the next big thing. We value openness, modesty, hard work, and simple yet great solutions. We are looking for a Backend Tech Lead to join our team and spearhead the design, development, and evolution of our software applications. In this role, you will play a pivotal part in setting technical direction, guiding our Kotlin backend developers, and collaborating closely with architects to build scalable, secure, and high-performance systems. If you are a clean code enthusiast who loves mentoring and staying ahead of the Java/Kotlin curve, we'd love to hear from you. Your day to day will include: • Guiding the Kotlin backend developers in designing, developing, and maintaining software applications, while setting technical direction and upholding code quality standards • Collaborating with the software architect to define and evolve system architecture for enhanced scalability, performance, and security • Actively engaging in coding, code review, and the enforcement of best practices • Collaborate closely with our Customer Support (L1), Infrastructure Support (L2), and Application Support (L3) teams to efficiently manage escalations- helping identify, troubleshoot, and resolve operational issues that keep our clients running smoothly • Participate in a rotating on-call schedule to ensure reliable 24/7 client support paired with appropriate compensation for your time and expertise • Mentoring and coaching team members to promote continuous learning and growth • Efficiently managing tasks and providing technical insights to ensure on-time and on-scope project delivery • Maintaining consistent communication with the Project Manager to ensure alignment and shared objectives • Staying up-to-date with the latest Java, Kotlin, backend technologies, frameworks, and tools, and introducing relevant technologies to enhance development processes What makes you thrive here: • Proficiency in Java ecosystem, familiarity with Java 17, 21 • Kotlin is our choice of language on the JDK, so experience with it is a huge plus • Familiarity with back-end frameworks such as Spring, Micronaut, or similar technologies • Experience with AI-powered coding tools/agents • A strong OOP mindset and a commitment to upholding SOLID principles • Hands-on experience with SQL or NoSQL databases • A genuine interest in staying up-to-date with the latest industry trends • A passion for writing clean code; if you're an Uncle Bob fan, you're more than welcome • Expertise in Containerization and Kubernetes (that would be a significant advantage) • Familiarity with at least one public cloud provider - our focus is on AWS, but we are also using GCP and Azure if these fit better to our needs • A mindset that encourages innovation, inspiring team members to bring forth fresh ideas and adapt to changing industry landscapes • A keen eye for the latest and greatest trends in the world of backend development • The ability to provide constructive feedback to team members, creating a space for personal and professional growth • A commitment to always having your project mates' backs and offering a helping hand when they need it • At least an intermediate level of English language skills since our team operates internationally Why join Supercharge? • To unleash your full potential, we’re here to help you grow every step of the way with exciting international projects, access to inspiring conferences, in-house soft skill trainings, and online courses. We’ll even support your English classes, and with our skill matrix, you’ll always have a clear path to learn. • To feel your best, your wellbeing truly matters to us. That’s why we offer health coverage with Medicare, Life1 gym access to keep you moving, and extra sick days for those moments you just need a little rest. We celebrate milestones with a fully paid month off after five years, offer extra paternity leave for growing families, and provide support through our Employee Assistance Program. • To have a blast, you’ll join a friendly team of 200+ people, all passionate about building amazing digital products. Whether it’s our Summercharge festival, a football match, quiz night, or just grabbing a drink with teammates, there’s always something to look forward to. And with our buddy system, you’ll feel part of the team from day one. • To brighten your day, our dog-friendly office in the heart of Budapest is filled with good vibes, great coffee, tasty snacks (yes, including Túró Rudi!), and cozy corners to relax, connect, or have a little fun when you need a break. You’ll also have a yearly personal budget and a company library to keep your curiosity growing. About our Budapest office Budapest is where it all started for Supercharge - this is our headquarters and the beating heart of our company. We have local offices in several countries, but this is where the real magic happens. A buzzing, vibrant space filled with talented individuals dreaming up and delivering amazing products for our clients. This Office of the Year award-winning space is home to our legendary after-work events, and as located in the heart of the city, putting us just steps away from some of the best restaurants, cafes, and bars around.