Backend Jobs in United Kingdom
There are 2,839 open Backend jobs in United Kingdom on freehire right now. 634 of them were posted recently. The skills employers ask for most often are api, cloud and java.
Salary
| Currency | Period | 25th | Median | 75th | Postings |
|---|---|---|---|---|---|
| GBP | year | £75,000 | £95,000 | £110,000 | 212 |
| USD | year | $130,000 | $157,500 | $201,250 | 15 |
From postings that disclose pay. Currencies are counted separately, never converted.
Most requested skills
- api 38%
- cloud 29%
- java 27%
- ai 27%
- aws 23%
- python 23%
- microservices 18%
- ci-cd 17%
How the work is done
- Hybrid 520 · 18%
- Remote 284 · 10%
- Onsite 36 · 1%
Visa sponsorship offered in 53% of the 151 postings that state a position on it.
Seniority
- Senior 1,275
- Lead 190
- Staff 134
- Middle 70
- Junior 47
- Principal 34
Who is hiring
- 1000+ employees 233
- 501-1000 employees 139
- 51-200 employees 125
- 11-50 employees 75
- 201-500 employees 20
- 1-10 employees 8
Backend Game Developer - Games Studio
Build and maintain scalable C#/.NET game engines for bingo products, extend them for B2B APIs, and support systems like chat and certification.
London-based .NET Backend Engineer – Cloud & AI
Builds backend services in .NET for device connectivity and user experiences on the PerfectDraft platform, leveraging AI-assisted tools and cloud infrastructure.
Backend Game Developer - Games Studio
Build and maintain the backend game engines and APIs that power tombola’s bingo products and B2B integrations using C#, .NET, AWS, and databases like T-SQL and DynamoDB.
Staff Backend Engineer: Scale AI Infra & Data Platforms
Design and scale distributed backend systems, optimize databases, streaming pipelines, queues, and caching for an AI startup’s infrastructure.
Backend Engineer: Scalable Payments & AI Platform (Equity)
Builds scalable microservices and APIs for a global payments network with AI-driven fraud detection and compliance in a fast-paced startup.
Senior Backend Architect: AI-Driven, Scalable Microservices
Design and build scalable microservices in Java/Spring Boot, mentor engineers on clean code and CI/CD, and integrate AI/LLMs into engineering workflows.
Senior Backend Engineer - Java for AI-Driven Wealth
Build high-performance Java APIs and microservices for an AI-driven wealth platform, owning architecture, testing, and deployment in AWS.
Senior Backend Architect for AI-Driven Fashion Marketplace
Architects the backend transaction layer for an AI-driven secondhand fashion marketplace, building scalable systems with Node.js and TypeScript to integrate AI models and support sustainable fashion.
Hybrid Backend Engineer (C++, Rust) Low-Latency Trading
Develops high-throughput, low-latency backend services in C++ and Rust for trading engines at a leading London trading firm.
Backend Engineer: AI-Powered Security Platform
Build and optimize C#/.NET backend services for an AI-powered cybersecurity platform, improving APIs and database performance in a multi-tenant AWS environment.
Senior Backend Engineer - Go/Python/Scala (6M Contract)
Mid-level backend engineer builds APIs and collaborates with teams using Go, Python, or Scala for a UK adtech-focused recruitment firm on a 6-month contract.
Java Backend Engineer (Java 17+) – FinServ, 6-Month Contract
Builds and maintains core banking systems using Java 17+ and RESTful APIs in an Agile environment for a UK-based bank.
Senior Backend Engineer - AI Data Infrastructure (London)
Architect and build backend systems to manage billions of data points and scale infrastructure for machine-learning workflows using PostgreSQL and ClickHouse.
Senior Backend Engineer - Cloud Video Security (Hybrid)
Builds cloud-based distributed systems for video security, managing cameras, access control, and sensors with a focus on scalability and security.
Senior Backend Engineer — Java Microservices Lead (Hybrid)
Leads Java microservices and RESTful APIs for a loans platform, mentors engineers, and enforces high-quality practices in an agile team.
PHP Backend Engineer (Laravel/CakePHP) – Hybrid, API & Cloud
Builds and maintains scalable PHP backend services using Laravel/CakePHP, implements APIs, and contributes to CI/CD and testing in a hybrid role.