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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 years of working in startups as a backend engineer;. Our backend tech stack is Spring Boot with Java/K

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

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.

Software Architect Java - BackEnd, Back End Google Cloud (GCP).

A leading car finance company in the UK is seeking a Java Engineer to design and build backend services that drive its operations.

A leading media company in Greater London is seeking a Senior Backend Engineer to join their Emerging Tech team. The role focuses on building backend systems for a multimodal AI platform, requiring expertise in TypeScript or Python and experience with cloud platforms such as GCP.

As a Senior Backend Developer, you'll be working in an environment that is collaborative, fast-moving, and delivery-focused where engineers are trusted to own features end-to-end, contribute to technical direction, and make sensible architectural decisions as the platform evolves. Senior Backend Dev

We’re looking for a talented Backend Software Engineer to join our agile, delivery-focused, and highly motivated team. Collaborate with cross‑functional teams to design, develop, and deliver robust backend services.

A leading global financial services firm in Greater London is seeking a Java Developer to engineer advanced applications that redefine finance.You will be involved in all software lifecycle stages, from design to deployment, and will collaborate with cross-functional teams.Ideal candidates will have

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 involves building and enhancing Java backend services, while also maintaining Python ETL processes.

A leading engineering firm in the UK is looking for a skilled engineer to lead through hands-on development of backend services using C# and.

A pioneering Health Tech organization seeks an Engineering Lead (Integration) in Greater London to spearhead the development of scalable integration platforms.This hands-on leadership role demands expertise in C#,.NET, Azure, and mentorship of a team of 5+ engineers.You will set architectural standa

A fintech SaaS company is seeking a Senior Back-end Engineer to join its high-growth team in London.This role involves leading the design of scalable microservices and developing RESTful APIs using Java 21 and Spring Boot.The ideal candidate will have over 7 years of back-end development experience

A leading energy company in London is seeking a Senior Software Engineer to join their Data team.You will be tasked with building stable APIs and a presentation layer for complex energy data, working primarily in Python.Candidates should possess over 4 years of experience in software development wit

Our backend engineers mostly work with Python and Django on an increasingly more service‑oriented architecture. We’re looking for an experienced (or senior) backend engineer to join the engineering team.

A leading cybersecurity firm in Greater London is looking for a Backend Engineer to develop and maintain their platform for identifying vulnerabilities in large enterprises. Ideal candidates have 3+ years of experience in backend engineering, including technologies such as FastAPI and MySQL.

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-

A leading global consulting firm in the UK is seeking a Senior Java Developer to lead the development of scalable Java-based applications.In this role, you will collaborate with cross-functional teams, mentor junior engineers, and ensure adherence to best coding practices.Required skills include han

A leading fintech company based in London seeks a Software Engineer with over 6 years of experience.The role involves architecting scalable microservices and developing automated tests.Proficiency in Golang or Python is essential, and experience in finance is a plus.Candidates will work in a collabo

Job Title**Engineering Team Lead: C++Job DescriptionHello, we're IG Group.We are an FTSE250 FinTech company who run mobile, web and desktop platforms that help our clients trade stocks & shares, leveraged products, Futures & Options and Crypto.Over 340,000 people already use our platforms.We're

A growing technology company in the UK is seeking a hands-on Senior Software Developer to lead backend feature development.

The role involves designing and developing backend services for AI capabilities, ensuring reliability and scalability. Ideal candidates will have over 4 years of experience in backend engineering, particularly with Python or Java. A tech company in Greater London is looking for a talented Backend En

Responsibilities include collaborating across the tech stack from frontend to backend.

We are hiring Staff / Senior Backend Engineers who are comfortable building robust, scalable systems that power our AI platform. A senior backend engineer at Capsa is expected to own projects and features from conception to production, building the infrastructure and services that underpin our AI pl

The role involves designing scalable and high-performance backend systems, writing clean code in Ruby, and optimizing tournament experiences. Ideal candidates should have a strong product engineering mindset with hands-on expertise in backend services.

In this role, you will design and develop high-performance backend services and data pipelines to enhance trading activities.

This role offers a 50/50 split between new development and maintaining existing systems, with a strong emphasis on SQL and backend technologies.

Contentful’s underlying storage infrastructure and adjacent services.You will work on the very foundation of Contentful that our teams build on top of, but also have the opportunity to directly impact our customers’ experience with scalability and performance features.You’ll join a team of tho

This job is brought to you by Jobs/Redefined, the UK's leading over‑50s age inclusive jobs board.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 ski

A dynamic technology education provider in the United Kingdom is searching for a skilled developer to join their remote team.The ideal candidate will have deep expertise in multitenancy and experience with statically typed languages such as C#, Java, or Kotlin.A strong willingness to learn Python an

Design and build the backend systems powering Fleek’s core marketplace — from item discovery and search through to checkout, payment, and post-purchase. Contribute to architectural decisions across the backend. This is a Senior Backend Engineer role in Fleek’s product engineering team.

Within this mission, the Commerce Platform team builds and operates the backend systems that enable purchases, billing, invoicing, and payments globally. Design and build scalable backend systems that power Spotify’s internal commerce platform. You have 5+ years of experience building backend serv

Contentful’s underlying storage infrastructure and adjacent services.You will work on the very foundation of Contentful that our teams build on top of, but also have the opportunity to directly impact our customers’ experience with scalability and performance features.You’ll join a team of tho

Clarify is building the world’s first autonomous CRM.For decades, CRMs have offloaded work onto teams.Our customers are founders and sellers who want a CRM that feels modern, intelligent, and helpful—one that pushes deals forward instead of slowing them down.We’re a lean, ambitious team backed

A modern technology company in the UK is seeking a talented Mid to Senior-level back-end developer to enhance its payments platform based on open banking.The successful candidate will have extensive experience in Java, Spring framework, and REST APIs, and will work within a collaborative, hybrid tea

As a Senior Backend Engineer working in the Developer Experience team, you’ll take on a challenging role in collaborating with product managers, stakeholders, and fellow engineers to build and optimize a dynamic, scalable, and high-impact platform. You'll contribute to architectural decisions, and

As a product backend engineer you’ll work in a squad alongside product managers, marketers, user researchers, designers, mobile engineers, web engineers, data analysts, business analysts, writers and more!. Our backend engineers have a variety of different backgrounds. We're usually always hiring

A leading tech company in London is looking for an experienced backend engineer to join their engineering team.

Develop and maintain backend features using Java, Python, and Node. You have experience with backend development, including coding, testing, and debugging. You care about user experience and understand how backend systems impact end users.

A global technology firm based in the UK is seeking an experienced Java Developer to design and maintain high-performance backend systems.

The successful candidate will build and manage complex backend services and APIs while contributing to design discussions.

You will have experience with using a modern programming language for backend development on a daily basis during a solid stint of your professional career.

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, sto

A prestigious trading firm is looking for skilled Java Engineers to design and deliver high-performance backend services in a cloud-native environment.

You'll build and enhance backend services, manage ETL processes, and work with PostgreSQL to ensure data reliability.