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Compensation: Competitive, based on location and experience .Location: UK (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 autonomous

We are a global network of highly skilled developers, activists and professionals all on a mission to help solve the greatest threat of humankind.

We are seeking a Backend Java Developer to design and deliver high‑quality applications using Java/JEE and modern web technologies. If you enjoy developing secure, reliable backend solutions and working closely with other technical teams, we’d love to hear from you. Design, develop, and maintain

UserTesting is hiring a backend engineer to join their Developer Experience team in the United Kingdom. In this role, you'll build and maintain backend services and internal tools that support engineering workflows, improve CI/CD systems, and help reduce friction in the development lifecycle. Ideal

At TripleTen, we’re creating innovative learning products that empower people to master IT professions like software engineering, data science, business intelligence, and QA — no matter their prior experience.Our AI-driven and thoughtfully designed platform helps students build real skills and a

IT professions like software engineering, data science, business intelligence, and QA — no matter their prior experience.Our AI-driven and thoughtfully designed platform helps students build real skills and access meaningful career opportunities.We're passionate about making education accessible,

We are seeking a Backend Java Developer to design and deliver high‑quality applications using Java/JEE and modern web technologies. Collaborate with analysts, testers, architects, and fellow developers to deliver quality outcomes. If you enjoy developing secure, reliable backend solutions and work

You will contribute to building a developer ecosystem, focusing on scalable backend services and resilient systems, while collaborating closely with cross-functional teams. A financial technology company based in Greater London is seeking a Senior Backend Engineer to join their App Store & Ecosystem

We’re seeking a seasoned Backend Developer with a proven track record in building scalable and robust architectures, and an instinctive understanding of how to deliver seamless digital experiences. You will work closely with the game team and technical leads to create and explore new and exciting

This role entails mentoring junior developers and leading project delivery in a hybrid setting, where you will work one day in the office.

Trayport is actively looking for a Software Developer to join our team for the design and development of our flagship data analytics platform where you will contribute to system architecture, aid colleagues to help coordinate our projects and review code too.

Strong commercial experience as a backend developer using Python ideally within a start-up or scale up environment. Experience designing scalable and maintainable backend architectures. You will play a key role in designing, building, and scaling specific backend applications that support complex sc

Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also passionate about improving outcomes and the user experience. Demonstrable experience working in multi-disciplinary/DevOps teams which include product owner/manager, UX designers, UX researchers, Developers

Corgi is an AI-powered insurance company designed for tech startups.The company has raised $108M and holds regulatory approval as a licensed carrier.The platform is built on Django, utilizes Stripe for payments, and features AI-driven underwriting.Corgi is currently scaling operations into the UK an

Our client is looking for experienced Senior Java Backend Engineers to join high-performing engineering squads working on modern, cloud-native platforms. They’re looking for strong backend engineers with deep technical expertise across event-driven systems, microservices, and scalable cloud archit

Senior Java Backend Developer (Level 4).

This includes: Building endpoints that call LLM APIs (OpenAI, Anthropic) and handle streaming responses Integrating with vector databases for RAG architecture (Pinecone, Weaviate, or similar) Managing context preparation and prompt engineering via backend logic You don't need to be an AI expert, but

We’re looking for an experienced Magento backend developer to help lead the delivery of high-quality e-commerce solutions and mentor a growing team. You’ll set an example for excellence in backend development and support the growth of the team. Coach and mentor less experienced developers to enh

A growing consulting business in the UK is seeking a talented Backend Python Developer to contribute to their AI-driven platform project. The ideal candidate will have strong experience in Python backend development and familiarity with cloud-native architectures.

Transport for London is seeking Senior Developers to enhance its Contactless platform.

As a Backend Developer (Kotlin/Java) at CIMAR, you will:. Build and support backend services in Kotlin to support a web UI and a set of remote gateways. Contribute to pragmatic architectural decisions and help shape backend patterns and standards.

We are now expanding our team and are looking for skilled, goal-oriented backend developers to join our teams. Design backend services using Python and modern cloud‑native architecture.

We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. The team brings together strong backend, frontend, product, and busi

If your idea of backend engineering is more than CRUD APIs and microservices boilerplate — this role is for you. Build core backend services in. Backend/platform services that sit in the.

The documentation engineering team is responsible for creating world‑class developer tools and framework‑level support for the documentation workflows on the developer website and Xcode. This will be your opportunity to join a highly motivated team of talented engineers who value collaboration a

Join BLP Digital — The #1 Solution for ERP Automation.BLP Digital is redefining ERP automation with agentic AI.Spun out of ETH Zurich and HSG, we build AI agents that automate finance, procurement, logistics, sales, and more for some of the world's largest enterprises.We solve real enterprise prob

Senior Backend Developer – United Kingdom. As a senior developer, you will contribute to the architecture, optimization, and security of critical backend infrastructure while collaborating with product, engineering, and design teams in an Agile environment. The role focuses on building and maintai

Strong commercial experience as a backend developer using Python ideally within a start‑up or scale‑up environment. We are looking for a Senior Backend Developer to join a growing product-focused engineering team. Ensure high performance, scalability, and reliability of backend systems.

A leading technology consulting firm in Greater London is seeking a Dot Net Backend Developer to build secure, scalable backend services and cloud-native applications.

Specialist II – Backend Development. Design, develop, and maintain backend applications using. Java backend/application engineering.

Our backend is a Rails monolith, Postgres, plus a few tiny services in Ruby, Node or Bun.

We are partnered with an energy trading client and are looking for a Backend Developer with strong Node.

Looking for a passionate and skilled.In this role, you will work on building secure, scalable, and high-performance financial applications that power modern digital finance solutions.You will be part of a fast-paced environment working on cutting-edge systems such as payment platforms, banking integ

Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also passionate about improving outcomes and the user experience. Demonstrable experience working in multi-disciplinary/DevOps teams which include product owner/manager, UX designers, UX researchers, Developers

The documentation engineering team is responsible for creating world‑class developer tools and framework‑level support for the documentation workflows on the developer website and Xcode. The ideal candidate is experienced in backend technologies, databases, API design and architecting of reliabl

Backend experience with either Java or Kotlin.

Collaborate with Front-end developers to integrate user-facing elements with server-side logic. Stay updated on emerging technologies and industry trends to continuously improve our backend infrastructure. Collaborate regularly in a cross-functional team made up of product managers, quality assuranc

We’re seeking Mid and Senior Python Developers to join our back‑end development team.

MrQ is seeking a Senior Java Backend Developer to join our engineering team in a hybrid role located in St Albans, UK.

Developers are a core part of this process, taking full ownership of their software throughout its lifecycle—from design and development to testing, review, and production support.

Strong backend engineering experience with Node.

This role involves designing and implementing backend services using modern Microsoft technologies in a cloud-first environment. NET Developer (Azure) based in Sheffield to join a small engineering team.

We are seeking a Backend Java Developer to design and deliver high‑quality applications using Java/JEE and modern web technologies. Collaborate with analysts, testers, architects, and fellow developers to deliver quality outcomes. If you enjoy developing secure, reliable backend solutions and work

As a senior Backend Developer, you will be a part of the team that works on the development and maintenance of the backend components of multiple services related to the platform. The Backend Development team is responsible for building all the API services and backend processes with the highest sec

Information Tech Consultants is seeking a skilled Java Developer to join their onsite team in London, United Kingdom. The ideal candidate will have strong backend development experience with modern Java technologies such as Spring Boot and Hibernate.

Senior Typescript & AI Backend Developer. Emergn you will design and build intelligent backend systems and AI orchestration solutions, integrating enterprise platforms like SAP to deliver scalable, automated end-to-end processes for our clients. Design and develop robust TypeScript backend systems t