Senior Fullstack Developer (Java/Kotlin)

We are looking for a Senior Fullstack Developer (Java/Kotlin) to join a product team that builds and runs business-critical applications used by customers and partners internationally. The team owns its services end-to-end, from development to production. You will work across back end, front end, and cloud, developing microservices and micro frontends in an event-driven architecture deployed on Kubernetes. Beyond hands-on development, you will help shape technical direction, make sound deployment decisions, and mentor less experienced developers. Requirements Requirements - Senior-level experience as a full-stack developer with Java and Kotlin in production environments - Strong understanding of event-driven architecture - Experience designing and building microservices and deploying them in cloud-based environments (AWS preferred) - Hands-on experience with modern front-end development, preferably React - Experience in a tech lead role or mentoring and guiding other developers - Ability to work independently and collaboratively in a hybrid setup - Full professional proficiency in English Nice to Have - Experience with Kubernetes and GitLab CI - Experience with Kafka for service-to-service communication - Experience with micro frontend architecture - Experience with continuous deployment practices - Familiarity with Agile methodologies Benefits - Take technical ownership in a team that builds and runs its own applications, used by customers and partners internationally - Work with a modern stack spanning Java, Kotlin, React, Kafka, AWS, and Kubernetes - Join inventYOU, an IT staffing and consulting company with a strong presence across Stockholm and Athens, offering long-term engagements and close support throughout your assignment