Backend Jobs in United Kingdom

Backend Java Engineer - Microservices & Kafka

Open 27d UK

API CI/CD Containerization Docker Event Driven Architecture +5 skills

Backend Java developer role in Burgess Hill, UK, building microservices with Java 17+ and event-driven architecture powered by Kafka. Day-to-day work involves REST APIs, CI/CD pipelines, and containerized deployments using Docker and Kubernetes; 4+ years of Java experience required.

Protein Works

Open 27d HybridUKContractSenior

Senior Backend Developer

Agentic AI Agile AI API Authentication +39 skills

Join Protein Works as our Senior Backend Developer, and build a greenfield, cloud-native platform from the ground up using Go and modern microservices architecture. About the role The Protein Works is a UK…

Intermedia

Software Developer – Backend API Services

Open 27d UKFull-time

API Automation CI/CD Cloud Linux +8 skills

Software Developer – Backend API Services Department: Dev & Engineering Employment Type: Full Time Location: United Kingdom Description About Intermedia: Intermedia has established itself as a leading provider of…

Nubeero Limited

S Backend/API Engineer, Money as a Service (Product) Stripe via Greenhouse United Kingdom Tech View role

Open 27d UK

API AWS Cloud Docker GraphQL +2 skills

Backend engineer on Stripe's Money as a Service (Treasury) team, designing, building, and operating APIs and large-scale services that move money globally. The role is language-agnostic, requiring strong coding, production debugging, and collaboration across distributed teams; cloud tech like gRPC, GraphQL, Docker/Kubernetes, and AWS is a plus.

Oliver Bernard

Remote Lead Backend Engineer – Product-Focused

Open 27d UKFull-timeLead

API AWS Azure Cloud C++ +2 skills

Remote Lead Backend Engineer role at Oliver Bernard, advertised as product-focused and based in the United Kingdom. The listing itself provides no concrete tech stack, duties, or requirements — only the title — so the role appears to involve leading backend development on the company's own product.

Whitehall Resources

Senior Platform / Backend Engineer

Open 27d UKSenior

API Authentication GitLab GraphQL JWT +3 skills

Whitehall Resources is hiring a Senior Platform/Backend Engineer for a key client in Cambridge, UK — hybrid with 2 onsite days per week and inside IR35. Day to day the work spans authentication systems, advanced PostgreSQL design, REST/GraphQL APIs, modular architecture, and GitLab-based CI/CD.

Triwill Group

Senior Backend Engineer - Real-Time Trading (Remote)

Senior Backend Engineer owning critical backend systems for real-time trading in the Hyperliquid ecosystem — building and running data pipelines, APIs, and high-volume databases while solving latency, reliability, and data-consistency challenges. Remote role based in the UK, working on decentralized financial markets infrastructure.

Junior Java Backend Engineer — Spring Boot & Kafka

Open 28d UKJunior

Agile Java Microservices REST

Webologix is hiring a Java backend engineer in Greater London to build robust backend systems, design RESTful services, and contribute to scalable microservices using Spring Boot and Kafka, collaborating with product and QA in an Agile environment.

Depop Limited - Nova

Open 28d UKFull-timeStaff

Staff Backend Engineer

AI Distributed Systems Event Driven Architecture Express.js Gemini +2 skills

Staff Backend Engineer at Depop, a peer-to-peer secondhand fashion marketplace, acting as a cross-cutting technical lead across the Payments and Shipping domains. Day to day: partnering with senior leadership, driving cross-team architecture and projects, mentoring engineers, and hands-on work in distributed, event-driven backend systems (e.g., Kafka).

Palantir Technologies

Backend Engineer for Scalable Distributed Data Systems

Open 28d HybridUK

Palantir is hiring backend software engineers in London to build large-scale distributed data platforms powering Foundry and Gotham. The role involves contributing across the product lifecycle, designing robust APIs, and collaborating with cross-functional teams, with hybrid work options.

Mozart AI

Founding Backend Engineer

Agentic AI AI API Backbone.js CI/CD +1 skills

Founding backend engineer (in-person, London) at Mozart AI, an AI music-creation startup: own the typed API surface, AI media-generation pipeline, real-time collaboration, media storage/CDN delivery, and Stripe/RevenueCat billing, scaling the backend from hundreds of thousands of users toward millions.

Senior Backend Engineer – Cross-Border Payments Platform

API Api Design Data Modeling

Xe, Bracknell, Berkshire, is seeking a Senior Back-end Engineer to own end-to-end problems, shape API design, data modeling and service implementation. You will work on a modern stack to move money in production and…

Mozart AI

Founding Backend Engineer: Real-Time Music Collaboration

AI API Backbone.js Observability

Mozart AI, a London startup building an AI-powered music creation platform, is hiring a founding backend engineer to own APIs, design the media generation backbone, and run media at scale across audio, video, and images, including the data model for DAW sessions, social graphs, collaboration, payments, and observability.

Method Resourcing

Backend Engineer

API AWS Azure Cloud Cloud Native +7 skills

Backend Engineer building scalable, cloud-native Node.js/TypeScript microservices on AWS for a fast-growing sports/betting tech platform, owning services from design through production. Hybrid role based in West London, 3 days per week in the office.

75K – 80K £

Spectrum IT Recruitment

Senior Backend Developer

Agile AWS Cloud CSS Docker +9 skills

Senior backend engineer working in a LAMP environment (PHP, MySQL, Git) for a Fareham tech company with brands in security, data backup and cloud storage. Day to day involves greenfield product development, systems optimisation and TDD within Agile/Scrum, with Docker, Kubernetes and AWS/GCP as beneficial extras.

60K – 60K £

Vidrush Ai Studios Llp

We’re Hiring: Senior Python Backend Engineer (AI / Agents)

Agentic AI AI API Assembly AutoGen +21 skills

Senior Python backend engineer building and scaling Vidrush's agentic AI video-production pipeline: LLM-based services (tool use, RAG, structured outputs), video/image intelligence pipelines, and scalable cloud inference. High-autonomy shipping role in a small startup team.

The Hived, Pbc

We’re Hiring: Staff Backend Engineer - Routing Squad

Open 28d HybridUKStaff

AI AWS BigQuery CDK Cloud +19 skills

Staff Backend Engineer on HIVED's Routing Squad, building distributed systems for route optimisation, supply-demand matching and forecasting for an all-electric parcel delivery network in London. Day to day you design production-grade backend services (Python/Go on AWS) and integrate optimisation algorithms with data scientists and product stakeholders.

The Jack Company Bv

Hiring: Senior Backend Engineer - Casino UX at Midnite

Agile AI API AWS Cloud +7 skills

Senior Backend Engineer building high-concurrency backend systems and RESTful APIs for a Series C betting platform. Core tech includes Python, Flask, PostgreSQL, and AWS (SQS, S3) with infrastructure managed via Terraform.

Node JS / Typescript Backend Developer

API Api Design AWS Firmware MySQL +10 skills

Backend developer building real-time services in Node.js and TypeScript — WebSockets via socket.io, Redis pub/sub and caching, MySQL on AWS RDS, and message queues like SQS — deployed on AWS with solid logging, metrics and alerting practices.

Hiring: Node JS / Typescript Backend Developer

API Api Design AWS Firmware MySQL +10 skills

Backend developer building services and real-time APIs in Node.js and TypeScript for a small, fast-moving UK team. Day to day involves WebSockets/socket.io, REST API design, Redis pub/sub and caching, MySQL on AWS RDS, job queues (SQS/Bee Queue), and AWS networking with solid logging and observability.