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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

Backend Software Engineer / SRE (Java JVM) London / WFH to £110k. Are you a Backend Software Engineer / SRE with a strong knowledge of Java and JVM internals?. As a Backend Software Engineer / SRE you will collaborate with development teams, as a trusted technical advisor to influence system design

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

Senior Backend Engineer | Python, FastAPI & Scaling | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS.

As a Senior Engineer you will play a critical role in the development and maintenance of the backend aspects of the pricing system for our sportsbook and work alongside our quantitative analysts to deliver our in-house pricing solution. This position will be able to come in and have a lot of ownersh

Compensation: Competitive, based on location and experience .Location: UK or Turkey (Hybrid – Office & Remote).Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale.Keepnet runs

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

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 leading fintech company in Greater London is looking for experienced Kotlin engineers to enhance its product platform.As a key player, you will be responsible for developing high-quality services and collaborating on new features.The role emphasizes high-performance, scalable systems and a culture

Our vision is to give everyone the belief they can make their move.We aim to make moving simpler, by giving everyone the best place to turn to and return to for access to the tools, expertise, trust and belief to make it happen.We’re home to the UK’s largest choice of properties and are the go-t

A leading fintech company is looking for a Senior Backend Developer to own the infrastructure for data pipelines, APIs, and databases. The role requires 5+ years of backend experience, particularly in TypeScript, and familiarity with real-time systems such as WebSockets.

A leading finance technology company in the UK is seeking a Back End Engineer to enhance payment systems and financial data infrastructure.This hybrid role offers flexibility to work remotely and aims to empower small businesses through innovative technology solutions.Ideal candidates should have a

This hybrid role requires expertise in Java and microservices architecture, with responsibilities including developing new features and maintaining backend services.

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting. Strong proficiency in backend programming languages like Java, Python or Go.

A leading sportswear company is seeking a Backend Software Engineer to develop and maintain cloud-native applications using TypeScript and microservice architectures. Candidates should have at least 3 years of backend experience and a strong collaborative mindset.

A leading game development firm in the United Kingdom is seeking a Principal Backend Engineer to lead the delivery and deployment of backend services for game projects.

A leading global investment firm is seeking a Senior Java Developer to design and develop scalable applications that support trading operations.This role involves collaboration with multi-functional teams, optimizing high-performance APIs, and mentoring junior engineers.The ideal candidate will have

A cutting-edge AI company in Greater London seeks a Lead Software Engineer to spearhead backend and edge/IoT engineering for Defence projects.

We're a startup in the automated decisioning space - and the backend is where the hard problems live. We're looking for a Senior Backend Engineer to join our engineering teams. Build and operate backend services in Python on AWS - Lambda functions, DynamoDB, Aurora, and event-driven pipelines that h

A prominent tech company is seeking skilled engineers in Greater London to join their Core Tooling team.The role involves contributing to tooling for efficient development, focusing on Go, Kubernetes, and AWS.Candidates should demonstrate strong software-related security experience and a collaborati

Backend Engineer with 5+ years of experience specialising in Java and Spring Boot-based microservices. Designed and developed scalable backend services using Java and Spring Boot, supporting a high-availability microservices architecture. Backend Development: Java, Spring Boot, Microservices Archite

A capital markets technology company in Greater London seeks a backend engineer to build scalable services for a SaaS platform.

A leading tech company in Greater London is looking for a Backend Engineer to build and maintain the platform foundations for their services used by over 600M users globally.

A growing AI startup in London seeks a Staff/Senior Backend Engineer to build robust systems for their AI platform.

As a Backend Engineer on Spotify's Core Infrastructure team, you'll build and maintain the platform foundations that power Spotify for 600M+ users globally.

A leading identity verification firm in Greater London is searching for a Manager, Software Engineering to lead the design of scalable, high-performance backend systems.

A leading infrastructure company in Greater London is seeking a Software Engineer to architect and develop its cloud platform.The ideal candidate will have extensive experience with Go and Kubernetes, and a strong focus on security and performance.This role offers the opportunity to collaborate with

Design, develop, and maintain backend services that support model training, inference, and experimentation.

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

Ensure reliability and continuous evolution of your focus area, whether frontend, backend, or infrastructure. Note: if you are more specialized in one over the other (backend vs infrastructure), please still apply!. We’re hiring a Member of Technical Staff (Backend/Infra) at Ona.

As a Security & Backend Engineer, you will own core pieces of our Scala + Python backend while raising the bar on how we protect data, systems, and customers. You will design and build backend services, shape secure‑by‑default patterns, and lead practical security work across authentication, aut

A leading secondhand fashion company in London is seeking a Senior Backend Engineer to join their product engineering team focused on digitizing the supply chain. You will design and build backend systems for their marketplace, integrating AI for seamless inventory workflows.

A leading technology firm in Greater London is seeking a Security & Backend Engineer to enhance its core data solutions. The ideal candidate will own backend services and ensure data and system security, balancing feature delivery with long-term hardening. You should have over 5 years of experience

This role involves developing and maintaining high-performance backend systems, integrating RESTful microservices, and leveraging big data tools like Spark and Kafka.

A leading online gaming company is seeking a skilled developer for backend programming in Go as part of a hybrid role.

This remote position focuses on backend and API testing, ensuring quality across their services.

We are looking for a Backend Engineer who will help build our Receive platform. Strong proficiency in backend programming languages like Java, Python or Go.

A leading software company based in Greater London is seeking a passionate Backend Software Engineer to architect, develop, and maintain high-performance backend systems.

A recruitment agency is seeking a Senior Technical Lead to guide the delivery of scalable backend systems. This position balances leadership, architecture, and hands-on coding, with a focus on delivering impactful backend solutions.

Backend Development: 4+ years of experience in backend development, ideally with expertise in both PHP (Symfony) and JavaScript (Node. Technology Evaluation and Enhancement: Conduct thorough assessments of our current PHP (Symfony) & NodeJS based backend applications and infrastructure to pinpoint i

A leading decision-making software company is seeking a Senior Backend Engineer to build and operate backend services using Python on AWS. The role involves tackling complex backend challenges and making key architectural decisions.

As a Backend Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. Backend Software Engineer / Developer (Python FastAPI SQL IaC) London to £95k. Are you a da

A full-service product and engineering agency is seeking a Mid/Senior Software Engineer in London with a backend development focus.

You’ll dive into Electroverse Backend, the logic that drives the Electric Vehicle (EV) charging experience at Octopus Energy, and work toward deploying backend features to our global user base. You will learn the key skills and architectural patterns (Git, Python, CI/CD and network interfaces) req

A leading technology firm in the UK seeks a Principal Backend Engineer to provide technical leadership and define architectural strategies for scalable backend systems.

A leading insurance brokerage in London seeks a skilled Server Side Developer for their hybrid working team.Responsibilities include designing and maintaining server-side applications, optimizing performance, and implementing security measures.Candidates should have extensive.NET (C#) and SQL experi