Freelance Backend Kotlin Engineer

Quick Facts Role: Backend Kotlin Engineer (Freelance) Engagement: Full-time Work model: 100% remote Work hours: CET Duration: Minimum 6 months (start around mid-July 2026) Rate: From 70 PLN/h (regular) Description You will work on backend development using Kotlin as part of a long-term, remote freelance engagement. The work includes event-driven systems with Kafka , Kubernetes deployment, and CI/CD for mobile and backend applications with strong DevOps collaboration. You’ll join an experienced team and contribute to development processes like code review and continuous delivery. Responsibilities Develop backend services in Kotlin Build and maintain event-driven systems using Kafka Work with Kubernetes-based deployments Support CI/CD workflows for mobile and backend applications Collaborate with DevOps practices and processes Participate in code reviews and quality-focused development routines Requirements Good command of written and spoken English Located in the European Union Kotlin proficiency Kubernetes experience Event-driven systems experience with Kafka CI/CD experience for mobile and backend applications DevOps collaboration experience Understanding of certification and compliance processes Benefits 100% remote, flexible work Work with an experienced development team and continuous growth of hard and soft skills Dev-friendly processes: Continuous Integration, Continuous Delivery, Code Review, bug bashes Long-term collaboration on challenging products (FinTech, B2B software, E-commerce, and more) Recruitment Process Introductory call with a recruiter Online interviews with the client if there is a fit Apply as soon as possible