> Markdown version of [/jobs/ext/4141277-scala-developer](https://www.wearedevelopers.com/jobs/ext/4141277-scala-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Scala Developer

- **Company:** Betbyterians
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Akka (Toolkit), Business Logic, Distributed Systems, RabbitMQ, Regression Testing, Web Services, WebSocket, Apache Kafka, Graphql, Data Delivery, Restful APIs, Code Restructuring, Microservices
- **Published:** October 31, 2026
- **Apply:** https://www.adzuna.es/details/5946980493

## About the Role

* Strong backend engineering experience (Senior or strong Middle+)
 * Solid knowledge of Scala and its ecosystem (Effect libraries such as Cats Effect, ZIO, Kyo)
 * Solid knowledge of streaming implementations in Scala (Reactive Streams, Akka, FS2, etc.)
 * Experience building web services (REST APIs, GraphQL, WebSockets)
 * Experience developing distributed systems and microservices (e.g. Kafka, RabbitMQ, RPC)
 * Ability to work with complex system design and non-trivial business logic

## Description

We are looking for a experienced Scala Engineer to join our Line management team at BETBY. The team is building and maintaining platform that delivers betting odds to the sportsbook. This is a high-impact role within a cross-functional environment, working closely with multiple teams and services., * Develop and maintain Scala-based sportsbook services.

 * Work on real-time sportsbook data delivery using WebSocket and GraphQL.
 * Rework the current line delivery protocol and support the migration from RabbitMQ to Kafka.
 * Improve streaming solutions to increase performance, scalability, and loading speed.
 * Optimize sportsbook configuration processing across services.
 * Work on Weblines, WebSocket/GraphQL lines, and other high-load sportsbook components.
 * Contribute to architecture and technical decisions for streaming and line delivery systems.
 * Refactor and improve existing services.
 * Add and improve functional, integration, performance, and regression testing practices.
 * Help make releases safer, faster, and more reliable.