June 23, 2026

Backend Engineer

Mid • On-site

Stockholm, Sweden

What we're looking for

• Hands-on experience with production Java/Scala services

• Familiarity with the Play Framework internals

• Spark experience for pipeline-heavy work

• Comfortable with OAuth-based authentication patterns

• React/TypeScript familiarity is a plus

• For DevOps-leaning candidates: experience with build systems

(Gradle), scripting, and CI/CD pipelines

Example of work tasks

• Modernise backend services and pipelines: upgrade to latest JDK,

Scala 3.x, and Play Framework 3.x

• Apply GenAI tooling throughout to automate code transformations,

dependency resolution, and compatibility fixes — producing reusable

tools, prompts, and a documented runbook

• Migrate authentication across a large number of backend services from

a legacy API to an OAuth-based solution.

• Replace per-unit data stores with a single versioned table: build Spark/

Java batch pipelines for backfill/migration and extend Scala/Play

backends

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