Freelance Senior Software Engineer (Java / Kotlin)
Location : Netherlands (Hybrid)
Type : Freelance
Start : ASAP
For our client, a market leader in e-Commerce, we are urgently looking for hands-on Senior Backend Engineers to deliver scalable, high-performance solutions in a cloud-native microservices environment. This is a plug & play freelance role requiring deep technical expertise and autonomy from day one.
Key Responsibilities :
- Build and optimize scalable, resilient microservices in a distributed system
- Write clean, testable, and production-ready Java / Kotlin code
- Collaborate across engineering, product, and design to refine technical solutions
- Embrace a DevOps culture : own what you build, monitor and improve services
Tech Stack :
Languages : Java, KotlinArchitecture : Microservices, event-drivenCloud : AWS / GCP / Azure (flexible), Kubernetes, DockerCI / CD : GitHub, Jenkins, Terraform, etc.Testing : JUnit, TestContainers, MockKIdeal Background :
5+ years backend engineering experience in complex systemsStrong knowledge of system design, clean code, and testing best practicesPrior work in financial services, fintech, or high-availability platforms is highly valuedReady to jump in? We look forward to your CV and motivation and will get in touch shortly!