Freelance Kotlin Developer (Fulltime)

Must-haves:

• Work permit for Poland
• 5+ years of professional backend development in Java and/or Kotlin
• Solid understanding of distributed systems design, microservice patterns, and event-driven architecture
• Hands-on production experience with AWS (ECS, Lambda, S3, RDS or DynamoDB)
• Experience with relational databases (PostgreSQL) and NoSQL (DynamoDB or similar)
• Strong command of Docker and containerized deployments
• Experience with CI/CD pipelines – we use GitHub Actions
• Clean code as a practice, not a talking point – you write code that your colleagues can confidently extend
• Genuine ability to self-direct: you can take a loosely defined problem, break it down, make decisions, and deliver
  
  
  
  Strong plus:
• Kotlin specifically (greenfield services are Kotlin-first)
• Experience with message brokers (RabbitMQ, SQS/SNS)
• Fami...