Kotlin Backend Engineer
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Wolt
Summary
Join Wolt's Merchant Group as an experienced Software Engineer and contribute to building scalable, production-grade systems. You will design, build, and scale reliable systems powering merchant experiences, working across the full development lifecycle. Collaboration and autonomy are key aspects of the role, with opportunities to grow your skills alongside experienced teammates. The position offers flexible work arrangements (home, office, or hybrid) in Helsinki, Stockholm, or Tallinn. Compensation includes a negotiable monthly salary and DoorDash RSUs. Wolt values diversity and inclusion, creating a welcoming environment for individuals from all backgrounds.
Requirements
- Experienced Software Engineers with a strong background in building scalable microservices
- Experience with Kotlin (primary language), or Java, Scala, or other JVM backend languages
- Ownership, collaboration, and a mindset for growth
- Ability to tackle complex challenges, question conventions, and work closely with teammates to build reliable, scalable systems
Responsibilities
- Design, build, and scale reliable systems that power merchant experiences
- Work across the full development lifecycle β from business logic and testing to cloud infrastructure and data streaming
- Collaborate on architecture and technology choices that keep our systems simple, scalable, and efficient
- Grow your skills and knowledge by working alongside experienced teammates in an environment that values learning and experimentation
Preferred Qualifications
Experience with Kotlin (Ktor, Koin, Spring, gRPC), PostgreSQL, MongoDB, Kafka, Redis, GitHub Actions, AWS, Docker, and Kubernetes
Benefits
- Flexible work arrangements (home, office, or hybrid) in Helsinki, Stockholm, or Tallinn
- Negotiable monthly pay and DoorDash RSUs