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Backend Engineer

Primusglobal — United Kingdom · Posted ~4 hours ago

Mid Full-time

Skills

Backend development Kotlin REST APIs GraphQL Asynchronous programming Unit testing CI/CD API integration Performance optimization REST Gradle

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Summary ✨ AI‑Generated

A backend engineering role focused on designing and maintaining scalable server-side services that support widely used digital applications. The position involves API development, system integration, performance improvements, and collaboration with product and engineering teams.

Highlights

Opportunity to build scalable backend services for high-traffic mobile experiences while collaborating with cross-functional engineering teams and working on modern API technologies.

Description

We are looking for a Backend Engineer to build and enhance the Mobile Service Layer (Backend for Frontend) powering mobile applications used by millions of cardholders globally. You’ll work closely with engineers, product teams, designers and QA to build scalable API services and interactive mobile experiences. Must-Have Skills • Backend / Server-Side Application Development • Kotlin • REST APIs • GraphQL (GQL) • Asynchronous Programming • Unit Testing • Performance Analysis & Optimisation • CI / Continuous Integration • Code Refactoring & Legacy Code • Bug Fixing & Troubleshooting • API / Backend Service Integration • Solution Design for Open-Ended Problems Relevant Technologies • Kotlin • Gradle • REST • GraphQL / GQL • RAML • CI/CD & Build Tools Key Responsibilities • Develop and maintain the Mobile Service Layer / Backend for Frontend (BFF). • Build scalable server-side applications and APIs. • Develop integrations with backend services and APIs. • Write clean, maintainable and high-quality code. • Refactor and modernise legacy code where required. • Implement asynchronous services and optimise application performance. • Develop and maintain unit tests. • Troubleshoot and resolve software defects. • Collaborate with engineering, product, design and QA teams. • Design solutions for complex and open-ended technical problems.