Backend Developer Jobs in England, United Kingdom

Backend Engineer on a fintech platform at a FTSE 250 global company. Builds and deploys Java/Spring Boot services, designs MongoDB schemas, and implements real‑time Kafka pipelines.

Obsidian Security, founded 2017, builds a SaaS security platform protecting Microsoft 365, Salesforce, and other cloud apps. As a Backend Engineer, you will develop scalable, reliable backend systems powering the core product, build APIs, and collaborate with product managers, designers, and senior engineers.

Telematics team at Radius builds a multi‑environment SaaS platform that powers connected vehicle solutions worldwide. As a Backend Developer you design, build, and maintain secure microservices in NodeJS/Typescript, collaborate with cross‑functional teams, and drive CI/CD pipelines on AWS. The role is based in Crewe, UK, with a hybrid work model (remote and onsite).

We are seeking a Backend Developer to join our team and contribute to building robust backend services for our platform. In this role, you will work with Senior Backend Developers, Lead Architect, and other team members to implement reliable and efficient backend functionality that powers our applications.

Data, Technology and Analytics team at WPP Media builds the fastest, most connected data platform to bridge marketing strategy to scaled activation. As a Backend Engineer you’ll design and build APIs and services using C#, .NET Core, TypeScript and React, deploy to Azure with Terraform, and collaborate with product, UX and DevOps to deliver secure, performant solutions.

Engineering team at heycar builds scalable backend services to support Volkswagen Group UK retailers and deliver superior automotive experiences. The role designs, implements, and maintains Python‑based microservices, collaborates with Product, Design, and Sales, and drives continuous improvement of Agile processes.

Lush Digital drives the company's global digital strategy, building and supporting the tools that power online, retail and manufacturing operations. As a Backend Developer you will design and implement REST APIs, GraphQL subgraphs and integrate third‑party solutions, ensuring high‑performance services for the global business.

Marketplace team at Mercor builds the core systems that match talent with opportunities, driving fill rate, hiring speed, and revenue. The role designs and operates high‑throughput backend services, APIs, and workflow infrastructure that power candidate‑job matching, routing, and real‑time decisioning.

Growth Studio (Engineering) at Proton builds the marketing technology stack that powers user acquisition and engagement. The Backend Engineer designs and implements key components of the MarTech platform using Python and PHP, collaborates with cross‑functional stakeholders, and ensures security and scalability.

Pelago Engineering builds scalable, AI-augmented backend systems for Pelago's virtual clinic. The Backend Engineer designs robust APIs, maintains serverless AWS infrastructure, and evolves event-driven architectures while collaborating cross‑functionally to deliver secure, high‑performance services.

Pelago Engineering builds the backend systems that power Pelago’s virtual clinic for substance use management. The Backend Engineer designs and implements robust APIs, maintains serverless AWS infrastructure, and scales event‑driven architectures to support secure, high‑performance member care.

Platform Engineering team builds the technology that enables Spotify to learn quickly and scale easily. The Backend Engineer – Release joins the Release squad within Client Platform Studio, building tools, systems, and workflows that allow Spotify engineers to release software safely, quickly, and with confidence.

Backend Engineering team at xAI builds the API that serves AI models to developers worldwide. The role designs and maintains a highly scalable, low‑latency inference system handling billions of tokens per minute, including model serving, request routing, SDK development, rate limiting, observability, and efficient scaling.

Motorway’s Dealer Core team builds the most powerful vehicle transaction platform, delivering features that help dealers find the best vehicles for their market. As a Backend Engineer you’ll develop and maintain micro‑services in Typescript/Node.js on AWS, collaborate with product and design to create excellent user experiences, and use AI tools like Kiro to accelerate delivery.

Core Infrastructure at Spotify builds the foundational systems that power the global music streaming platform. The team focuses on CDN and internal platform services, enabling engineers to deliver reliable, scalable experiences to millions of listeners.

Air Apps’ Backend Engineering team builds the AI‑powered Personal & Entrepreneurial Resource Planner, delivering scalable APIs and cloud services that power the app’s core planning features. As a Backend Engineer, you’ll design REST/GraphQL services in Node.js/TypeScript, model data in Supabase/PostgreSQL, and deploy serverless workloads on GCP, ensuring security, reliability, and performance.

Backend Engineer in Spotify’s Data Processing Product Area building scalable data platforms. Design and operate infrastructure for reliable, efficient data pipelines, improve developer productivity, and drive cost‑efficiency.

Backend Engineer (Monitoring) at Apollo Research focuses on building scalable, real‑time systems to process AI agent logs, design secure APIs, and integrate with SIEM tools. The role requires strong Python expertise, cloud and containerization skills, and experience with large‑scale data pipelines.

xAI seeks a Backend Engineer to build and maintain scalable production systems for grok.com and its API. The role focuses on designing reliable distributed services, ensuring observability, and managing databases like PostgreSQL, Clickhouse, and MongoDB. Candidates should have deep expertise in Rust or C++, and experience with distributed systems, observability, and container orchestration.

Depop seeks an experienced Backend Engineer to join a cross‑functional team in London, working with mobile, web, and machine learning/data science teams to design and deliver high‑quality, scalable services for 1M+ daily users. The role emphasizes agile practices, continuous improvement, ownership of code lifecycles, and collaboration across product, design, and engineering.