Kotlin & Java Developer - Zagreb, Osijek

At Ericsson Nikola Tesla , we don’t just follow technology—we shape it. With nearly 3000 professionals, mostly from STEM fields, we’re a powerhouse of innovation built on over 75 years of experience. As the region’s leading R&D center and a leading exporter of software development services, we blend deep expertise with bold ideas—lighting the way toward a more connected, secure, and intelligent future. Beyond our cutting-edge ICT solutions in the telecom sector, we’re also shaping the future in healthcare, transport, public services, and multimedia. Our innovative technologies make a real difference—enhancing everyday life and delivering meaningful value to communities. We are looking for a Kotlin & Java Developer to join our team of tool developers producing automation software supporting the telco industry. The team operates internationally, using an agile way of working and the latest available technologies. We are engaged in the global Ericsson digitalization project, where each individual has the opportunity to co-create solutions supporting the emerging 5G and Cloud-Native offerings. Location : Zagreb, Osijek What you’ll be doing: Design, build, and maintain efficient, reusable, and reliable Kotlin code Ensure the best possible performance, quality, and responsiveness of the applications Identify bottlenecks and bugs, and devise solutions to these problems Help maintain code quality, organization, and automatization We are looking for: 3+ years of experience in a similar field Professional experience with Spring Boot, Kotlin, Relational or graph databases, Java 21+ JPA, Junit, IntelliJ, Containers, Kubernetes and REST Service Comfortable with Agile development, Test Driven Development, Git, Clean Code, Architecture, and design (at least basic level) Degree in electrical engineering, computing, telecommunication, mathematics, or equivalent Proficiency in speaking and writing in English Would be considered a plus: Experience in writing integration and E2E tests Basic shell scripting in GNU Linux CI/CD concepts and pipeline scripting Experience with GitLab/GitHub workflow Understanding the concept of Graph Database Familiarity with Docker/Kubernetes/Helm Familiarity with different Kotlin/Java design patterns Familiarity with any AI assistant (Copilot, Amazon Q, ...) Familiarity with different API Standards We offer: You won’t just work on cutting-edge technology—you’ll be part of a team that values your ideas, supports your growth, and makes sure you enjoy the journey along the way. Here’s what you can look forward to: Smooth start – a company laptop, and a mobile phone with great plan. Flexibility – hybrid work and flexible hours that fit your lifestyle. Career growth – level up with mentoring, scholarships, and continuous learning. Performance rewards – annual awards, performance-based bonuses, innovation incentives, and a holiday allowance. Commute covered – full reimbursement for public transportation. Beyond basic health – regular medical check-ups, supplementary and additional health insurance, and well-being programs. Family support – 2000 EUR newborn gift, kindergarten subsidy, and extra days off for family needs. Referral reward – earn a bonus for bringing great talent. Meal perks – 100 EUR monthly meal allowance and access to our on-site restaurant in Zagreb. Life beyond work – join sports, cultural, and community activities. Active lifestyle – stay active with a partially subsidized Multisport card and access to the ENT Health Hub, our on-site fitness space with exercise equipment in Zagreb. Time to recharge – enjoy compensatory time off during the Christmas holidays. And much more. Please submit your application, including your CV, written in either Croatian or English. Any personal projects (on GitHub or similar) are also welcome. Croatian citizenship or a work permit for Croatia is mandatory. Candidates will be evaluated and contacted after passing the initial screening. In our Privacy notice, you can find out more about the way your personal information is handled.