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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

We are looking for a Senior Backend Engineer to join our new Quantitative Sports team. 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-

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

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.

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

We are looking for an exceptional Software Engineer, to join our Backend Engineering squad.

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

An established technology firm is seeking a talented Senior Software Engineer in London.You will develop and maintain high-performance applications while mentoring junior engineers.The ideal candidate has 6–11 years of Python experience, is well-versed in Django or Flask, and has strong skills in

Strong proficiency in backend programming languages like Java, Python or Go.

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

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

Solid understanding of computer science fundamentals (data structures, algorithms, networking) and a proven ability to apply them in creating high-quality, scalable backend systems. Experience with security best practices for backend development. We’re seeking a seasoned Backend Developer with a p

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

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

Senior Backend Software Engineer. User-first engineering: Maintain a "user-first" mindset, understanding that your backend architecture directly impacts the daily lives of employers and employees.

A fast-growing SaaS business is seeking a Software Engineer to develop secure and scalable backend systems.

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

A leading AI company in Greater London is seeking a Senior Software Engineer to lead backend and edge/IoT engineering in their Defence business unit.

London, England, United Kingdom.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 feat

A leading vacation rental management platform seeks a highly motivated Staff Backend Engineer to join their Core team. In this fully remote role, you'll work on critical integrations with major booking platforms, leveraging expertise in SaaS development and backend languages, particularly PHP and Go

A leading multimedia company in Greater London seeks an experienced software engineer to design and implement scalable APIs and backend services.

A global leader in specialist media is seeking a Senior Software Developer to develop and maintain the backend infrastructure for their mobile application.

A leading technology company in DeFi is seeking a Backend Developer to integrate Hyperliquid functionalities into their API platform. This remote role is focused on enhancing the company's API stack while collaborating with cross-functional teams to ensure robust backend code. Ideal candidates will

In this role, you will build high-quality backend services and cloud-native solutions using Java, Spring, and Golang.

A global analytics leader is seeking a Senior Software Engineer to design and maintain scalable backend services.

A technology-driven company in Greater London is seeking a Senior Backend Engineer to join their dynamic team.

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

Our mission is to enable everyone to build wealth.We reinvent how trading and investing work by creating exceptional products people love.Fostering a culture of excellence and high velocity is the key to our success.Today, we serve over 5 million clients, with more than €30 billion in assets under

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-

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.

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

At Elliptic, we're not just connecting systems - we're building the backend services, integrations, and internal applications that enable our revenue teams to operate at scale. You'll be the engineer behind our commercial technology stack, building the backend systems that pull together product usag

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

Our backend engineers have a variety of different backgrounds. We're usually always hiring for Backend Engineers, so there's no closing date for this job. As a backend engineer you’ll work in a squad alongside other disciplines like product managers, marketers, user researchers, designers, mobile

A global manufacturing technology firm seeks a hands-on leader to manage backend and data engineering.

The ideal candidate will have over 5 years of experience in building high-performance backend services, preferably using Kotlin.

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

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

A growing proptech company is seeking a Senior Backend Engineer to join their high-performing team in London. The ideal candidate has over 5 years of backend experience with expert-level skills in SQL optimization and microservices architecture.

A tech company in Greater London is looking for a talented Backend Engineer to join their AI Platform team. 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 engineer

Backend focus: Solid backend engineering background, especially with EVM and integration patterns; front‑end or modal design work is not expected. Bonus: Familiarity with Solana, Bitcoin, or mobile backend development. They are looking for a Backend Developer with a dedicated focus on integrating

A leading global financial institution is looking for a Senior Java Backend Developer on a contract basis in London. The role involves designing, developing, and enhancing backend services for data processing.

A leading financial technology company in the UK is seeking a Senior Staff Engineer to guide technical direction across multiple squads.This role involves hands-on involvement in coding and architecture, mentoring engineers, and driving improvements in quality and scalability.Candidates should be sk

Developing robust APIs and services - create performant, reliable backend services that power our platform. 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