Senior Go Backend Engineer: Scale Merchant Systems

Wolt; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Job summary

Wolt is seeking an experienced Software Engineer to join the Go and Kotlin initiatives within the Merchant Group. You will design, build, and scale reliable merchant experiences, collaborating across teams to deliver production-grade systems.

You’ll work with Go or Kotlin, engage in architecture choices, and mentor teammates while growing your own skills in a fast-paced, learning-driven environment. Based in Helsinki or Stockholm, some travel may be required.

Qualifications

• Proven track record building scalable, production-grade systems.
• Experience mentoring juniors and collaborating across cross-functional teams.

Responsibilities

• Design, build, and scale reliable merchant-facing services.
• Work across the full development lifecycle from business logic to cloud infrastructure.
• Collaborate on architecture decisions to keep systems simple and efficient.
• Grow skills by partnering with experienced teammates in a learning-focused environment.

Skills

Go

Kotlin

gRPC

Spring

PostgreSQL

MongoDB

Kafka

Redis

AWS

Docker

Kubernetes

GitHub Actions

Tools

Ktor

Koin

Job description

Wolt is seeking an experienced Software Engineer to join the Go and Kotlin initiatives within the Merchant Group. You will design, build, and scale reliable merchant experiences, collaborating across teams to deliver production-grade systems.

You’ll work with Go or Kotlin, engage in architecture choices, and mentor teammates while growing your own skills in a fast-paced, learning-driven environment. Based in Helsinki or Stockholm, some travel may be required.