Backend jobs in London
Backend Developer
<em>Backend</em> Developer. Location: London or Edinburgh - Hybrid – 2 days per week onsite. Start Date: ASAP. Contract Rate: £460 to £540 per day inside IR35. Duration: 6 months initially. Role Overv...
Backend Engineer
<em>Backend</em> Engineer. Salary: Up to £75k (DoE) * Hybrid: 1 day/week in London * No sponsorship offered. I'm recruiting on behalf of a fast‑growing accounting‑tech startup that builds automation a...
Lead C# Backend Developer - Perm - London
Lead C# <em>Backend</em> Developer. Location: Central London (Onsite) Salary: £75,000 - £85,000 Type: Permanent Sponsorship: Not available (must be UK-based. Overview. We are working with an establish...
Ruby on Rails Backend Engineer
You will act as a trusted <em>backend</em> partner for Product and Platform teams, stabilising third-party integrations, improving background job efficiency, and utilising architectural documentation ...
Junior Software Developer
This is a frontend-focused role with some <em>backend</em> requirements. You will join a small, agile team and work directly with the company's co-founders, playing a fundamental role in the evolution...
Python Developer
We are looking for an experienced Python <em>Backend</em> Developer with strong cloud expertise and hands-on experience building or supporting enterprise-grade platforms. This role is ideal for someon...
Python Developer
This role combines strong <em>backend</em> engineering with data integration, with a clear focus on Python development in Linux environments. You will work closely with stakeholders across engineering...
Senior Ruby Developer
Developing and maintaining <em>backend</em> services using Ruby / Ruby on Rails. Building scalable, maintainable components within a cloud-native architecture. Collaborating with product, cloud, and D...
Full Stack NextJS Developer
Working across the full stack – frontend, <em>backend</em>, and cloud. Owning features end-to-end (design → build → deploy. Contributing to architecture and best practices. Collaborating closely with ...
Senior Software Engineer / Data Platform Engineer
You'll help modernise core systems, improve performance and reliability, and build scalable <em>backend</em> and data services. This role suits engineers who are comfortable working across legacy and ...
Java Developer - Java Frameworks, SC Cleared
The role will involve <em>backend</em> development, API delivery, and contributing to greenfield microservices-based solutions. Hybrid working is required, with on-site presence in Croydon. Key Skills...
Salesforce Engineer | £400 – £450 | Outside IR35 | 6 Months | Remote First
This position will play a key role in leading Salesforce refactoring, modernising <em>backend</em> systems, and driving modern engineering practices across our clients platform. Offering £400 - £450 p...
Senior Amazon Brand Manager
Optimise <em>backend</em> operations: fees, inventory, margins, and COGS. Own brand P&L and profitability. Collaborate remotely with a fast-moving global team. Who You Are. Proven Amazon FBA experienc...
Node, TypeScript, React Developer
Contribute to <em>backend</em> services and APIs (Python or Laravel-based. Help re-platform and migrate to a modern stack. Collaborate cross-functionally with UX, Product, and DevOps. What We Offer. A...
Java Full Stack Developer
Essential. 10+ years' <em>backend</em> engineering experience. Strong Java, Python, microservices, REST APIs, distributed systems. RDBMS (Oracle/SQL Server/Postgres), CI/CD, Docker, Kubernetes. JVM tu...
Back End Software Engineer - SC Cleared
Node.js - async programming and API/<em>backend</em> services. Azure - designing and managing scalable cloud infrastructure. Terraform - infrastructure as code and environment automation. Jenkins - CI...
2x Senior Data Engineer (Financial Services)
You will take a leading role in modernising core components, improving platform performance and resilience, and building scalable <em>backend</em> and data services as the platform evolves. This role ...
Senior Golang Developer
Proven experience building <em>backend</em> or network-facing services using Go. Strong Python skills, ideally within machine learning or computer vision environments. Familiarity with frameworks such...
Senior Software Engineer
You'll work onsite in London, helping shape robust <em>backend</em> services and responsive user experiences using React, NextJS and NodeJS. What You'll Do. Build and maintain scalable, secure applica...
Java Software Engineer
What We're Looking For. 6+ years' <em>backend</em> engineering experience (Java. Proven experience modernising production systems at scale. Hands-on use of AI development tools (e.g. Claude Code, GitH...
Python Developer
Build robust, scalable <em>backend</em> services using advanced Python programming practices. Integrate solutions with Azure-hosted and on‑prem systems, including applications running on Dash Enterpri...
Full Stack PHP/Python Developer
You'll be working across the full stack, bridging the gap between robust <em>backend</em> logic and intuitive frontend interfaces. While the role is 100% remote, the team enjoys getting together for o...
Java Developer, Contract, Inside IR35
As a Java Developer, you will be responsible for designing, building, and maintaining high-quality <em>backend</em> services within a complex, distributed system. You will work closely with product, a...
Full Stack Typescript Engineer
I'm working with an established fintech organisation that provide essential <em>backend</em> services for thousands of daily transactions - the work they do is crucial to finance in the 21st century. ...
Senior Data Engineer
While primarily a <em>backend</em> engineering role, you will also support reporting via SSRS/Microsoft Power BI, with an increasing focus on AI-driven capabilities over time. As the Senior Data Engin...