Backend Jobs in United Kingdom
There are 2,855 open Backend jobs in United Kingdom on freehire right now. 628 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 | 214 |
| 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 24%
- python 23%
- microservices 18%
- ci-cd 17%
How the work is done
- Hybrid 522 · 18%
- Remote 285 · 10%
- Onsite 36 · 1%
Visa sponsorship offered in 53% of the 149 postings that state a position on it.
Seniority
- Senior 1,277
- Lead 193
- Staff 135
- Middle 70
- Junior 46
- Principal 36
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
Java Backend Engineer IRC299950
Build and maintain scalable Java microservices using Spring Boot, Kafka, and REST APIs, with Gradle for builds and integration testing for reliability.
Back-End Engineer, Trading
Build backend services in Kotlin/Python for a crypto trading platform, including order management, market data, REST APIs, and WebSocket streams in a high-volume, real-time environment.
Senior Backend Engineer - Revenue
Senior Backend Engineer building pricing and revenue-optimization infrastructure for a parking/mobility marketplace using PHP/Laravel, Python, and SQL.
Backend Engineer for Acquiring Risk
Build and maintain a fraud engine for Wise’s payment platform, using Java, Kafka/RabbitMQ, and SQL to balance speed, scalability, and risk mitigation.
Senior Backend Engineer
Build and scale backend infrastructure for an AI-native workspace serving financial institutions, integrating ML models with secure, high-performance systems in Python and cloud platforms.
Senior Backend Engineer
Builds scalable backend services for Octopus Energy’s Flexibility team, using Python/Django and cloud infrastructure to support high-transaction energy systems and accelerate green energy adoption.
Senior Backend Engineer - Revenue
Build and maintain scalable backend services in PHP/Laravel that power pricing and revenue systems for a mobility platform, collaborating with Product and Pricing teams.
Senior Backend Engineer
Build and scale backend services in Python/Django and PostgreSQL on AWS to power a European lending platform for home energy improvements, integrating payments, credit bureaus, and KYC/AML.
Senior Backend Engineer
Design and scale backend services, APIs, and data pipelines for AI-powered media workflows, integrating generative models and optimizing performance.
Senior Backend Engineer
Senior Backend Engineer builds and optimizes multi-tenant data services in .NET/C# and PostgreSQL for HR pay equity and compensation analytics, using AI agents for development and review.
Lead Backend Engineer
Lead a small backend team building a climate-tech platform for energy-system modelling in Python, FastAPI/Django, PostgreSQL and cloud infra.
Backend Engineer (Visa Sponsorship Available)
Build scalable financial infrastructure in Go on Google Cloud, collaborating with cross-functional teams to design robust systems for high-value transactions and user-facing features.
Senior Backend Architect & Mentor (Azure/.NET)
Owns and modernizes backend services in Azure/.NET, mentors engineers, and drives architectural decisions balancing performance, security, and cost in a fintech platform.
Backend Engineer: Build Scalable Python APIs
Build and maintain scalable Python APIs (Django, FastAPI) for an automotive platform, working in a hybrid London setup with AWS and Kubernetes.
Senior Backend Engineer
Senior Backend Engineer builds and maintains scalable APIs, microservices, and data pipelines in Python/Node.js for a marketing intelligence platform powering global ad campaigns.
Senior Backend Engineer - .Net
Build and maintain scalable .NET microservices on AWS, using C# and PostgreSQL, while mentoring peers and improving system reliability.
Backend Developer
Build and optimize microservices, APIs, and ETL pipelines for a UK fintech startup using Laravel/PHP, MySQL, and AWS.
Senior Backend Engineer
Build and scale backend services in Python/Django to power Octopus Energy’s green energy products, handling high-transaction systems and cloud infrastructure for business customers.
Backend Engineer
Build and own an AI-first internal tech stack for a fast-growing LLM-powered investment research platform, including data pipelines, CRM integrations, and automation tools.