Backend Jobs in United Kingdom
There are 2,832 open Backend jobs in United Kingdom on freehire right now. 602 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 | 215 |
| 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 28%
- ai 27%
- aws 24%
- python 23%
- microservices 18%
- ci-cd 17%
How the work is done
- Hybrid 516 · 18%
- Remote 285 · 10%
- Onsite 36 · 1%
Visa sponsorship offered in 53% of the 149 postings that state a position on it.
Seniority
- Senior 1,266
- Lead 190
- Staff 135
- Middle 70
- Junior 46
- Principal 37
Who is hiring
- 1000+ employees 234
- 501-1000 employees 139
- 51-200 employees 125
- 11-50 employees 74
- 201-500 employees 20
- 1-10 employees 8
Backend Engineer for AI Health Platform
The Backend Engineer will build and ship new healthcare products using React, Python, and LLM pipelines. The role involves taking projects from proof-of-concept to production while collaborating with clinicians.
Backend Engineer, AI Care Platform for Clinicians
Builds AI-powered clinician tools by designing full-stack solutions (React + Python) and LLM pipelines, iterating rapidly based on clinic feedback to deliver scalable, trustworthy features.
Remote Backend Engineer (Django) for Green Energy
Build and own medium-sized Django backend features serving multiple countries on the Kraken platform for a green energy company, integrating billing, CRM, and device control services.
Senior Backend Engineer - Java/NodeJS/AWS, Remote
xdesign is looking for a Senior Backend Engineer to develop scalable, secure systems using Java, NodeJS, and AWS. The role involves hands-on coding, architectural leadership, mentoring team members, and integrating automation and AI into client projects.
Senior Backend Engineer - Identity & Access (C#/.NET)
Owns and builds identity features for internal/external users, designing secure auth systems in C#/.NET and collaborating on global-scale solutions.
Staff Backend Engineer: Go, AI-Driven Architecture
Lead backend architecture and AI-driven practices at a London-based AI company, building scalable systems and mentoring engineers.
Senior Backend Engineer — Growth & Acquisition
The Senior Backend Engineer will focus on optimizing signup funnels, referrals, and landing pages using Ruby on Rails, PostgreSQL, and GraphQL. This role involves close collaboration with product and growth teams to improve tracking infrastructure and server-side data collection.
Expert Backend Engineer
Backend Engineer building large-scale distributed components for Wiz's cloud and AI security platform, using Java, C#, or Golang on cloud infrastructure (AWS/GCP/Azure) with microservices and containerized deployments.
Senior Backend Engineer (Foundation)
Senior Backend Engineer on Proton's Foundation team, designing and building shared libraries, framework layers, and internal services in PHP and Rust that underpin all Proton products (Mail, VPN, Drive, Pass, Calendar).
Senior Python Backend Engineer - Hybrid & Cloud Infra
Senior Python Engineer building FastAPI backend services, managing AWS infrastructure, and improving CI/CD pipelines and observability for Certara IQ, a quantitative systems pharmacology platform.
Senior Backend Engineer — Build Private-by-Default Platforms
Senior backend engineer designing and building shared libraries and internal services across Proton products, owning architecture in a large monorepo and working with PHP and Rust.
Cloud-Native .NET Backend Engineer (AWS) — Hybrid London
Design and implement cloud-native microservices using .NET Core, C#, and AWS alongside Terraform, Kubernetes, and CI/CD pipelines on a 6-month hybrid contract in London.
Expert Backend Engineer
This role involves developing and maintaining large-scale distributed backend components for a cloud security platform. The engineer will work with a tech stack including Golang, GraphQL, PostgreSQL, and Kubernetes to secure cloud and AI applications.
On-Site .NET Backend Engineer | APIs, Cloud & SQL
On-site .NET Backend Engineer building enterprise-grade applications, focusing on backend services with C#, RESTful APIs, SQL, and cloud integrations within an Agile team.
Senior Backend Engineer - Java/C# Microservices & Mentoring
The Senior Backend Engineer will design and build scalable backend services and APIs using Java/Spring Boot and .NET. The role involves mentoring team members, contributing to architectural decisions, and working within an agile Scrum environment.
Senior Backend Engineer – Blockchain Orchestration (Equity)
Senior Backend Engineer building offchain infrastructure for the Omni Account blockchain wallet, designing scalable concurrency-heavy backend services that coordinate with Solidity smart contracts.