UK-based Senior Scala Backend Engineer - API & OpenSearch

QAD, Inc.; Birmingham; On-site; GBP 110,000 - 115,000; Full time

Job summary

QAD Inc. is hiring a Backend Engineer in the UK to develop and maintain the Redzone API backend (Scala) and the MCP server for AI integrations. You’ll improve OpenSearch usage and deliver capable, testable code for frontline manufacturing teams.

You will work with Scala and Java, leverage modern tooling, and contribute to a responsive, scalable backend in a fast-paced, collaborative environment. UK-based, full-time role.

Qualifications

• 5+ years of relevant professional experience as a Backend Engineer.
• Required languages: Scala (5+ years) and Java.
• Generating Tapir endpoints and models from OAS.
• Knowledgeable of maintaining versioned API contracts.
• Transforming objects with Chimney.
• Async programming with Cats Effect.
• Publishing and consuming Avro formatted Kafka messages.
• Relational table design with PostgreSQL.
• Transactional database access with Slick or Doobie.
• Knowledgeable of database migration patterns, such as, expand and contract.
• Writing observable and testable code using libraries such as Specs2 and ScalaMock.
• Comfortable refactoring and building in large legacy code bases.
• Modularized programming mentality.
• Trunk Based Development.
• Launch Darkly Feature Flagging.
• CI/CD GitHub Actions.
• AWS Cloud.
• Docker.

Responsibilities

• To develop and maintain the QAD Redzone API Backend (Scala), ensuring a seamless and efficient user experience for manufacturing front-line teams.
• Develop and maintain the MCP server to support AI integrations, enhancing our internal tooling capabilities.
• Improve the use of OpenSearch within the backend application.
• Complete delivery work committed during the sprint to achieve business goals.
• Help the business maintain a competitive edge by leveraging the latest Scala and Web technologies.
• Participate in forums to explore interests outside of the sprint work and contribute ideas to continuously improve the system.
• Commit to the team to help the team and the wider business achieve our goals.
• Write testable and maintainable code.

Skills

Scala

Java

Kafka

PostgreSQL

CI/CD

AWS

Docker

OpenSearch

Specs2

ScalaMock

Tools

Tapir

Slick

Doobie

GitHub Actions

Job description

QAD Inc. is hiring a Backend Engineer in the UK to develop and maintain the Redzone API backend (Scala) and the MCP server for AI integrations. You’ll improve OpenSearch usage and deliver capable, testable code for frontline manufacturing teams.

You will work with Scala and Java, leverage modern tooling, and contribute to a responsive, scalable backend in a fast-paced, collaborative environment. UK-based, full-time role.