Senior Kotlin Developer

Kotlin Developer Kotlin, Spring Boot, Kafka, GCP, Microservices, CQRS/Event Sourcing, Docker, K8s, Firebase, ArgoCD, Terraform Fintech Start-Up €100k + remote first

I'm currently looking for a Senior Software Engineer with strong JVM & Cloud-native, Event Sourcing & Terraform expertise to join my client, a fast-growing trading company building a SaaS platform for high-frequency, high-velocity traders. Their platform empowers more than 6,000 active traders in over 100 countries to monetize their trades efficiently and securely.

The backend consists out of 15 microservices built with Kotlin, Kafka as the messaging queue, and everything is hosted in GCP. This is the kind of role where you can truly take ownership. You'll help mature the real-time, high performance backend services, lead new initiatives, and have a direct impact on the platform's technical direction.

Your profile:

You are a senior Java/Kotlin developer with deep expertise in building high-performance distributed, backend services that process and analyse large volumes of data (real-time). You have a proven track record working with event sourcing and Cloud-native infrastructure, designing scalable system architectures and optimising complex codebases for speed, reliability, and maintainability.

Over the years, you've worked extensively with Java and/or Kotlin, with modern frameworks and backend technologies, consistently applying best practices for distributed systems, data processing, and performance tuning.

Furthermore:

• Minimum of 5+ years of experience in backend development
• Strong expertise in JVM, CI/CD, Terraform. Kafka = a plus
• 2 years working experience with event-driven/sourcing architecture (e.g. CQRS)
• Experience or strong affinity with distributed systems, data-intensive applications, or fintech environments.
• Experience with Cloud native development (GCP/AWS)
• You are located in the Netherlands or you are willing to relocate.

Benefits:

• Salary up to €100k annually
• Remote first role with flexible working hours
• International team with growth opportunities

Interested? Please contact Dion Zwinkels at