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The Role As a Backend Engineer, you will play a key role in developing and scaling backend services that power a next-generation risk modelling platform. Backend Engineer (Python, FastAPI/Flask/DjangoGPU/CUDA) 📍 Bristol (Hybrid) 💰 £55,000 - £70,000 + Benefits 📝 P

Design, develop, test, and maintain secure, high-performance backend services using modern programming languages.

The role involves the design and development of backend services and infrastructure for Machine Learning workloads.

Our backend tech stack is Spring Boot with Java/Kotlin/Groovy, MySQL and Opensearch, hosted on AWS. Our frontend is React with Typescript, and you will be expected to contribute small features to the frontend (though the role is at least 95% backend). You're an experienced engineer with multiple ye

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. They've completed Series A funding, raising $29 million across three funding rounds, and are now seeking a Senior Backend Engineer. You will be in charge of building scalable backend services and awesome messaging que

Software Architect Java - BackEnd, Back End Google Cloud (GCP)Contract: Until December 2026 - RenewableLocation: Essex Offices (located between Brentwood and Basildon) 4 days a weekRate: £600 per Day Inside IR35The finance and banking division of this engineering company and household name is se

Develop custom APIs and backend services to enable seamless integration with customer environments. Contribute to continuous improvement of backend architecture and services, incorporating customer feedback and industry trends. Python-based backend development.

A forward-thinking transportation company is seeking a skilled Backend Engineer in London to join dynamic technical teams. The ideal candidate has at least 4 years of backend development experience and is proficient in multiple programming languages such as Go, Ruby, and Python.

A leading open source software company is looking for a talented software developer to create new features and improve the Landscape codebase.The role involves remote collaboration with a global team, committing to high-quality code and automated testing, and requires strong proficiency in Python an

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board.Our product suite can adapt to the needs of diverse industries and use cases within one powerful platform, empowering ~245,000 customers worldwide to reimagine how work gets done, drive greater efficienc

A tech consultancy is seeking a hands-on Python Developer for a contract role in Dacorum.You will be involved in building and maintaining Python-based back-end services, developing web applications with frameworks like Flask or Django, and supporting legacy system modernization.A proactive problem s

A financial technology company in Greater London seeks a generalist developer to contribute to various projects.The role involves building and maintaining client libraries for APIs across multiple languages like PHP and Ruby, working on identity-checking systems, and developing internal services for

We’re on a mission to make money work for everyone.We’re waving goodbye to the complicated and confusing ways of traditional banking.With our hot coral cards and get-paid-early feature, combined with financial education on social media and our award winning customer service, we have a long histo

A fintech startup in London seeks a Backend Developer to create AI-powered product capabilities and scalable backend architecture. Ideal candidates will have 3–4 years of experience in backend development, particularly with Java and Spring Boot.

Has 5+ years of professional backend experience with strong computer science fundamentals in data structures, algorithms, and software design patterns.

Backend : Typescript,EVM and integration patterns. They are looking for a Senior Backend Developer who will own the infrastructure powering data pipelines, APIs, real-time delivery, and the databases underneath. Own architecture decisions for the company's backend systems.

A cutting-edge technology firm is seeking a hands-on leader for backend and data engineering in London.

We are looking for a generalist developer to join our team to help build out systems & handle user growth.You’ll have the opportunity to contribute to different areas of the code-base and choose which projects interest you.Our service is built on Ruby on Rails, but particular experience is not a p

Create robust APIs and data service: Design and optimise APIs and backend services that power Vega’s frontend applications and enable complex data workflows across the platform. Build AI‑powered product capabilities: Design and develop backend systems powering Vega’s AI‑enabled platform, inc

You will act as a trusted backend partner for Product and Platform teams, stabilising third‑party integrations, improving background job efficiency, and utilising architectural documentation like C4 models to ensure long‑term scalability. You will have the autonomy to own multiple backend system

A high-growth B2B SaaS company in the United Kingdom seeks a Software Development Manager to lead a team of about 8 engineers.In this non-coding but highly technical position, you will drive engineering best practices, improve team performance, and support critical technical decisions.The ideal cand

In this role, you will design and build high-performance backend services, leveraging your skills in Rust and PostgreSQL to contribute to critical financial infrastructure.

A leading financial technology company based in the UK is seeking a backend engineer to join its newly-formed Acquiring Platform team. Ideal candidates will have strong backend programming skills, a knack for designing APIs, and the ability to work collaboratively in a dynamic environment.

The ideal candidate will have experience in backend service development, familiarity with machine learning frameworks like PyTorch, and containerization skills using Docker and Kubernetes.

The ideal candidate will have 6-11 years of experience, strong skills in backend systems and APIs, and a passion for continuous improvement.

A tech-focused proptech platform in London is seeking a Senior Backend Engineer to design and maintain high-performance APIs and microservices. The ideal candidate has over 5 years of backend experience and a passion for scalable architectures and clean code.

A dynamic technology company in London is seeking a Senior Software Engineer to build and maintain backend services for their football fan platform.

A leading AI solutions provider in Greater London is seeking a Lead Software Engineer to spearhead backend and edge/IoT engineering for high-stakes defence projects.

A cybersecurity leader is seeking a Senior Software Engineer for backend services and APIs in London.

As a Senior Backend Engineer at Monzo, you'll take technical ownership of key product areas in one of Europe's leading challenger banks.

Ideal candidates have 5+ years in backend systems, strong Python and Django skills, and experience in cloud environments.

A leading tech company in Greater London seeks a Lead Software Development Engineer in Test (SDET) to oversee a small team, drive automation strategies, and enhance testing processes.Candidates must have a minimum of 8 years of experience in test development, strong Java proficiency, and a backgroun

A leading renewable energy company in the UK seeks passionate individuals for its internship program focused on backend development. Interns will work with the Electroverse Backend team, contributing to features for the public EV charging network.

A leading tech firm in Greater London is seeking a skilled Backend Developer to join their technology team. This role involves designing and developing scalable backend systems using Java 9+ and Spring Framework, contributing to microservices architectures, and collaborating within Agile teams.

This role focuses on backend engineering and data integration in Linux environments.

A blockchain technology company is looking for a Blockchain Backend Expert to design and develop efficient blockchain technologies for their distributed ledger system.

A prominent financial services firm in Greater London is seeking a Backend Software Engineer to build payment processing infrastructure. You'll develop backend services that support high-volume, secure transactions, ensuring reliability and compliance. This role requires strong skills in backend eng

As a Backend Engineer at Monzo, you'll help build one of the UK's fastest-growing digital banks, serving 9M+ customers.

The successful candidate will bridge the gap between backend engineering and infrastructure security, implementing robust controls across a complex cloud and blockchain ecosystem. Candidates must be prepared for a live coding exercise focused on backend and systems logic. Engineering Proficiency: Mu

You'll be the engineer behind our commercial technology stack, building the backend systems that pull together product usage, contracts, subscriptions, and customer data — powering everything from billing accuracy to renewal forecasting to customer health scoring. You'll define how we structure, s

A fast-growing HealthTech company in London is seeking a Backend Software Engineer to join its Agile engineering team. Ideal candidates will have a solid understanding of backend system design, strong communication skills, and experience with technologies like Spring and JPA.

A leading gaming company in Greater London is seeking a Lead Engineer for Mobile Games.This role requires over 10 years of experience with commercial game engines, a strong proficiency in both Unity and C#, and a proven record in delivering game-as-a-service architectures.The successful candidate wi

A mission-driven tech scale-up is seeking a Senior Backend Engineer to design, build, and scale their core software platform. This hands-on role involves creating backend services in Python and improving system performance while collaborating with a high-performing team.

A scaling Fintech is seeking a TypeScript Developer / Backend Software Engineer to enhance their energy trading platform. You'll engage in backend development using TypeScript, Node, and AWS while contributing to technical discussions.

You’ll be UK or EU based and you’ll be working in a team of backend engineers across MPG. We deliver, deploy and help integrate backend services alongside external co-dev clients as part of industry leading game projects, and collaborate to define solutions and implement features on time and to

Senior Software Engineer, Backend Services & APIs. Senior Software Engineer, Backend Services & APIs. Familiarity with computer science fundamentals and backend development concepts.

A leading blockchain infrastructure company is seeking a Senior Backend Engineer to join their WalletConnect Pay team. In this fully remote position, you will be responsible for designing and maintaining backend services across the payment platform, including payment orchestration and APIs. Ideal ca

A specialist consultancy in the education sector is seeking a Senior Back End/Data Engineer.The role involves building ETL pipelines, designing SQL schemas, and ensuring secure data handling in a modern Azure environment.Ideal candidates will have excellent SQL skills and experience in creating data