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Senior .NET Backend Engineer — Global, Scalable Impact

TransPerfect Connect is looking for a Software Engineer to join their team in Greater London. This position involves engaging in all phases of application development, focusing on coding and debugging in alignment with security standards. The ideal candidate will have over 4 years of experience in software devel ...

Founding Backend Engineer — AI Powered Production Pipelines

Tracer is seeking a Founding Senior Backend Engineer in London to own and build core systems for alert investigation within production data pipelines. This role involves architecting and implementing reliable systems, focusing on high-value alerts. Candidates should have a strong background in software engineeri ...

Trading Data Platform Engineer AWS, SQL & Backend

Harrington Starr is seeking a skilled data engineer in the London Area to support the evolution of a large-scale financial data platform. The ideal candidate will have extensive SQL Server expertise and backend development skills in Python or C#. You’ll play a crucial role in modernising legacy systems and impro ...

Senior Backend Engineer: Python, AWS, Hybrid + Equity

Taktile is looking for a Senior Backend Engineer to join the team in London. This role involves designing and operating backend services in Python on AWS, tackling scalability and reliability challenges. Candidates should have at least 5 years of experience, strong system design skills, and the ability to lead c ...

Go Backend Architect for Scalable Distributed Systems

Ripple is seeking a talented engineer to own and design their digital asset custody platform. The role requires a proven track record in building backend systems and hands-on experience with large-scale distributed systems. Candidates should be familiar with Golang, Kubernetes, and cloud infrastructure, thriving ...

Product Tech Lead: Hybrid Python Backend Architect

A technology consulting company in London seeks a Product Technical Lead to drive the development of a complex software product. The role involves leading backend development using advanced Python skills and collaborating with product and design teams. Ideal candidates have a strong software engineering backgrou ...

Lead Go Backend Architect — Fintech, Hybrid London

A fintech startup is seeking a highly experienced Lead Go Lang Engineer in London for a hybrid role. You will be pivotal in developing and scaling backend systems that handle millions of transactions. The ideal candidate will have at least 7 years of backend engineering experience, proficiency in GoLang and Post ...

Staff Backend Engineer Fintech Scale Up (London)

A leading fintech startup in London is looking for a Senior Backend Engineer to join their team. In this hybrid role, you will guide architectural decisions, solve complex technical problems, and mentor junior engineers. The ideal candidate will have over 7 years in backend engineering, strong skills in GoLang, ...

Backend Engineer, RiskOS — Real Time Identity Security

Socure in Greater London is seeking a highly skilled Software Engineer to join their dynamic engineering team. The role involves leading the design, development, and deployment of advanced software solutions, collaborating closely with cross-functional teams, and mentoring junior engineers. Candidates should hav ...

Senior Backend Engineer — AI Powered Microservices & LLMs

Weekday AI is seeking a Senior Backend Engineer to build and scale intelligent backend systems for AI-driven applications in London. You'll design robust APIs, create scalable microservices, and integrate advanced AI capabilities like Large Language Models. Collaborating with cross-functional teams, you'll focus ...

Senior Backend Tech Lead Scalable Microservices, Growth

Marshmallow is seeking a Technical Lead – Backend to lead a cross-functional team in building scalable customer flows and improving existing solutions. Candidates should have 8+ years of software engineering experience, including 2+ years in a lead role, strong expertise in microservices, and a commitment to men ...

Senior Backend Engineer AI/LLM Frameworks (Remote)

Acclaim AI in Greater London is seeking skilled backend developers with 6+ years of experience in Python. In this role, you will maintain the internal LLM agent framework, ensure system reliability, and collaborate with ML/NLP teams. Ideal candidates should have hands-on experience with async Python, enjoy worki ...

Backend Python Engineer — High Impact FinTech (Hybrid)

Glocomms is seeking a Backend Software Engineer in London to design and maintain secure, scalable backend systems critical to financial offerings. This hybrid role demands 4-5 years of software engineering experience, proficiency in Python/Django or Go, and a strong understanding of relational databases. The pos ...

Python Backend Engineer for AI Platform (Contract)

Mercor is seeking a Software Engineer in the Greater London area to develop MCP servers and integrate applications into the RL Studio platform. Candidates should exhibit strong Python skills, an understanding of Docker and Linux environments, and experience with APIs. The role involves local testing and debuggin ...

Senior Backend Product Engineer, AI Platform (Remote)

Cavendish Professionals is seeking a Senior or Staff Backend Product Engineer to join a London-based AI startup. The ideal candidate will possess strong backend engineering experience, particularly in TypeScript and Node.js, and have a proven track record in building scalable systems. This dynamic role involves ...

Principle and Senior Backend Software Engineer (.NET)

Principle and Senior Backend Software Engineer (.NET) Location: North London/HertfordshireType: Permanent | Strong Salary + Bonus + EquityRight to Work: UK work eligibility required (no sponsorship) What We’re Looking For We’re searching f ...

Principal .NET Backend Engineer | IoT Systems + Equity

A leading IoT technology firm is seeking a highly skilled Principle and Senior Backend Engineer (.NET) to design and develop critical backend services for IoT products. The role involves building scalable systems, ensuring high automated test coverage, and collaborating with various teams to create secure soluti ...

Senior Backend Engineer – Fintech APIs & Cloud (Hybrid)

SGI is seeking a Senior Backend Software Engineer for a hybrid role in London. The ideal candidate will have over 8 years of experience in software engineering, particularly in building public-facing APIs and cloud infrastructure. The position provides opportunities to work on high-scale backend systems and cont ...

Senior Backend Engineer Node & React Native | Equity

LegalAndGeneral is seeking a Senior Backend Engineer in London. This role involves delivering high-quality software features, contributing to team processes, and mentoring junior engineers. The ideal candidate has at least 3 years of experience in backend development, particularly with React Native, and a strong ...

Backend Engineer (C# / Python / AWS) – Hybrid London

Client Server is seeking a Backend Software Engineer in Greater London on a 12-month Fixed Term Contract. The role offers a salary of up to £180,000 per annum plus benefits. The ideal candidate will have strong experience with C#, .NET, Python, SQL, and AWS, along with a background in investment management or fi ...

Backend Engineer II — IT Management (Cloud Microservices)

A leading cybersecurity company based in Greater London seeks a Junior Back-End Engineer to join their IT Management Product Group. This role involves collaborating with experienced developers to build, deploy, and monitor a cloud-based microservice architecture. Candidates should have over 3 years of backend de ...

Market Data Backend Engineer (C# & Python) – Hybrid

Client Server is looking for a Backend Software Engineer in London, offering a salary of £100k - £150k plus bonus and benefits. You'll design and build data platform components using C# and Python, develop ETL pipelines, and improve CI/CD practices. The role requires strong backend development, knowledge of data ...

Senior Backend Engineer, Latency‑Focused Trading Systems

TP ICAP is looking for a Senior Back-End Engineer to design, develop, and maintain high-performance server-side applications in London. The candidate should have significant experience in low-latency trading systems, strong skills in .NET and cloud-native architectures, and a deep understanding of database desig ...

Mid Level Backend Engineer (Node.js) Office: London

Mid Level Backend Engineer (Node.js) Office: London Apply for this role About the company Emma is the app to manage all things money. Our mission is to empower millions of people to live a better and more fulfilling financial life. Emma was founded by engineers, ...

Backend Engineer (Node.js) – Scale FinTech in London

Wayfindi is looking for a Mid Level Backend Engineer (Node.js) in London to work closely with the CTO and tackle backend infrastructure challenges. The ideal candidate will have at least 2 years of experience, be passionate about building innovative financial solutions, and thrive in a high-performance team. Res ...

Backend Software Engineer (Shield) – Go Microservices Expert

Infosum is seeking a Backend Software Engineer in Basingstoke to develop and maintain backend systems. Responsibilities include collaborating on system design, backend development using Go, and optimizing database performance. Ideal candidates will have over 3 years of experience, proficiency in Go, and familiar ...

Senior Python Backend Engineer | Hybrid, APIs & Growth

A dynamic tech scale-up in England is looking for Mid and Senior Python Developers to join its back-end team. You will implement scalable solutions, design REST APIs, and ensure code quality in a collaborative setting. This full-time role offers a competitive salary of £60,000 - £80,000, hybrid working options, ...

Senior Backend Engineer — Casino UX (Remote, UK)

A gaming technology company is seeking a Senior Backend Engineer to join their Casino UX team. This remote role involves building and maintaining backend systems, developing APIs, and ensuring high engineering standards. Candidates need 5+ years of experience, strong Python skills, and the ability to work in a f ...

Senior AI Platform Engineer Backend (TS/Node)

Contentful is seeking a Senior AI Software Engineer to innovate with AI Integrations. You will collaborate with product managers and designers to build AI-enabled features, design scalable AI platform features, and implement cutting-edge AI technologies. Ideal candidates will have a strong background in API desi ...

Senior TypeScript/Node.js Backend Engineer — AWS & GraphQL

Houseful is seeking a passionate Software Engineer to join their team in London. The role involves developing critical backend services using TypeScript, Node.js, and Apollo GraphQL. Ideal candidates should have a strong background in modern API development, experience in distributed systems, and a solid underst ...

Senior Python Backend Engineer Remote iGaming APIs

Burns Sheehan is seeking a Senior Software Engineer to join a rapidly scaling iGaming platform as a technical anchor for the backend team. This remote-first position requires strong backend engineering experience, particularly in Python, along with a proven ability in building production-grade APIs. The role inv ...

Senior Backend Engineer (Kotlin/JVM) — Hybrid London

Formula. is seeking a Senior Backend Engineer in London to optimize their high-performance systems. This hybrid role requires expertise in Kotlin and JVM technologies, with responsibilities that include shaping backend infrastructure, developing microservices, and collaborating closely with Product and Engineeri ...

Senior TypeScript/Node.js Backend Engineer – Hybrid, AWS

Houseful Limited is seeking a passionate Software Engineer to join their team. This role offers the opportunity to develop critical backend services using TypeScript, Node.js, and Apollo GraphQL. Working in a hybrid model, you will take ownership of your projects and collaborate closely with product and design t ...

AI First Backend Engineer Data Platform & Automation

Mentor Talent Acquisition is seeking an engineer dedicated to developing an AI-native internal tech stack in Greater London. This foundational role includes designing and implementing operational systems to enhance efficiency for Sales, Finance, Ops, and Customer Success teams. The ideal candidate should have st ...

AI Driven Backend Engineer (Python/Django) FinTech

Corgi Insurance in London is looking for a Software Engineer to build and maintain their AI-powered business insurance platform. Candidates should have at least 2 years of experience, strong Python and Django skills, and be comfortable with SQL and REST APIs. The role involves integrating various systems and imp ...

Senior Backend Engineer Real Time Energy Infra

Join a forward-thinking company dedicated to revolutionizing the energy sector. In this role, you will engineer cutting-edge backend infrastructure for a next-generation energy platform. Your expertise will contribute to constructing real-time digital twins and developing messaging interfaces with third-party pr ...

Lead Software Engineer Cloud Scale Backend Systems

A leading tech company in Greater London is seeking a hands-on Manager, Software Engineering to lead impactful backend systems development and foster engineering talent. The role emphasizes architectural design, cross-team collaboration, and mentoring while contributing to coding in a cloud-native environment su ...

Tech Lead Backend & Data Systems (Hybrid + Equity)

A technology company in Hackney, London, is seeking a Tech Lead to drive backend and data engineering. In this technical-first role, you'll architect, build, and mentor a team while directly influencing product direction. Ideal candidates have strong expertise in Laravel and Python, thrive in fast-paced environm ...

Senior Backend Engineer: Cloud Native APIs & Scale

A fast-growing database company based in London is looking for a Senior Backend Engineer to join their dynamic team. The role involves leading the design of scalable backend services, developing cloud infrastructure, and optimizing database performance. Candidates should have experience with cloud platforms like ...

Senior Backend Engineer – On Chain Payments (Remote)

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. You will collaborate ...

Senior Backend Engineer, AI CRM (TypeScript/Node.js)

An innovative tech company in Greater London is seeking a Senior Product Engineer to push boundaries in AI-native CRM development. The role requires strong expertise in TypeScript and Node.js, with responsibilities including leading projects, designing scalable systems, and influencing stakeholders. The ideal ca ...

Senior Backend Engineer — Python APIs, Data, Hybrid

A technology-driven financial services firm in Greater London is seeking a Senior Backend Engineer to enhance their market-leading CLO product. The role involves leading projects, collaborating in cross-functional teams, and improving backend services. Ideal candidates will have substantial Python experience, es ...

Staff Backend Engineer (PHP/Go) Remote Europe

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. The ideal c ...

Senior Backend Engineer — AI Driven Cybersecurity Platform

A cybersecurity company in Greater London is seeking a Senior Backend Engineer to tackle complex engineering challenges. You will design and evolve architectures for an integration platform connecting over 150 security tools and build backend services to support AI capabilities. Candidates should have deep C#/.N ...

Senior Python Backend Engineer: APIs, Cloud & Data

A technology consulting firm is looking for a Senior Python developer to enhance applications for investor portfolio management. You will collaborate with business analysts and developers, focusing on designing production APIs, improving system efficiency, and employing cloud-native solutions. The ideal candidat ...

Senior Backend Tech Lead Scalable Microservices, Growth

Marshmallow is seeking a Technical Lead – Backend to lead a cross-functional team in building scalable customer flows and improving existing solutions. Candidates should have 8+ years of software engineering experience, including 2+ years in a lead role, strong expertise in microservices, and a commitment to men ...

Senior AI Platform Engineer Backend (TS/Node)

Contentful is seeking a Senior AI Software Engineer to innovate with AI Integrations. You will collaborate with product managers and designers to build AI-enabled features, design scalable AI platform features, and implement cutting-edge AI technologies. Ideal candidates will have a strong background in API desi ...

Senior Python Backend Engineer | Hybrid, APIs & Growth

A dynamic tech scale-up in England is looking for Mid and Senior Python Developers to join its back-end team. You will implement scalable solutions, design REST APIs, and ensure code quality in a collaborative setting. This full-time role offers a competitive salary of £60,000 - £80,000, hybrid working options, ...

Senior Backend Engineer — Casino UX (Remote, UK)

A gaming technology company is seeking a Senior Backend Engineer to join their Casino UX team. This remote role involves building and maintaining backend systems, developing APIs, and ensuring high engineering standards. Candidates need 5+ years of experience, strong Python skills, and the ability to work in a f ...

Senior Python Backend Engineer Remote iGaming APIs

Burns Sheehan is seeking a Senior Software Engineer to join a rapidly scaling iGaming platform as a technical anchor for the backend team. This remote-first position requires strong backend engineering experience, particularly in Python, along with a proven ability in building production-grade APIs. The role inv ...

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