backend engineer jobs in London

Job Description Affinity Labs: Founding Engineer (Backend) Location: London Area, United Kingdom · On-site Company Description At Affinity Labs, we’re building the future of company creation, a full-stack AI venture studio that partners with content creators to co-found authentic, scalable software businesses. By combining AI-native development with creator-led distribution, we're pioneering...

You will work on a diverse range of challenges, from model-serving APIs and data pipelines to infrastructure for intelligent agents and automation frameworks.

You will collaborate closely with the CTO and engineering team to design, build, and scale production systems that integrate AI into real-world applications.

Job Description Role: Senior Backend Engineer Salary range: 80-90k Location: x2 days pw in Central/East London Tech stack includes: Typescript, NodeJS, SQL, AWS, Terraform, Current team size: overall circa 20 (each team dedicated EM, FE, BE, iOS/Android etc) We're working with a Series C funded, healthtech startup company - their mission? helping people with addictions! They're hiring for...

Job Description Benefits - 9% pension contribution - Stock Options - Health Insurance etc This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company - $120m VC-backed Scale-Up - One of the fastest-growing companies in the...

Job Description Backend Engineer: Distributed Systems Specialist Location: New York or London (Hybrid) Salary: $300,000 – $350,000 USD About Us We’re a stealth-mode infrastructure venture building next-gen primitives for decentralized execution. Our mission: rethink how distributed systems scale, sync, and self-heal — with a focus on performance, modularity, and cryptographic integrity. Our...

Job Description We're working with a rapidly growing Series A startup backed by top-tier VCs who are seeking highly skilled Software Engineer / Backend Engineer with deep expertise in backend development. This company is revolutionising how software is built and deployed and is at the forefront of AI-powered automation - they're creating innovative solutions that fundamentally change the...

Backend Engineer: Distributed Systems Specialist Location: New York or London (Hybrid) Salary: $300,000 – $350,000 USD About Us We’re a stealth-mode infrastructure venture building next-gen primitives for decentralized execution. Our mission: rethink how distributed systems scale, sync, and self-heal — with a focus on performance, modularity, and cryptographic integrity. Our team includes...

You will be working closely with the Machine Learning team; however, you are not required or expected to have background in Machine Learning. This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. In this role, you will:

Senior Backend Engineer (Platform & Cloud) If you are considering sending an application, make sure to hit the apply button below after reading through the entire description.Location: London (Hybrid)Contract: 612 monthsRate: Negotiable (DOE)Were working with a global enterprise organisation that is expanding a centralised engineering function supporting multiple product teams across an...

You will work on a diverse range of challenges, from model-serving APIs and data pipelines to infrastructure for intelligent agents and automation frameworks.

You will collaborate closely with the CTO and engineering team to design, build, and scale production systems that integrate AI into real-world applications.

Senior Backend Engineer / Developer (TypeScript Node API) London / WFH to £100k Are you a senior technologist looking for an opportunity to progress your career in a hands-on role where you can make an impact? You could be joining a scaling tech company that has developed a digital distribution platform transforming electronic trading in the institutional FX xwwtmva options market via a central...

You will work closely with frontend engineers, product managers, and the CTO to design and evolve a highly scalable, asynchronous, cloud-native platform. This is a hands-on senior engineering role with real technical ownership, influence over architecture, and scope to mentor others.

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

Affinity Labs: Founding Engineer (Backend) Location: London Area, United Kingdom · On-site Company Description At Affinity Labs, we’re building the future of company creation, a full-stack AI venture studio that partners with content creators to co-found authentic, scalable software businesses. By combining AI-native development with creator-led distribution, we're pioneering a new model of...

Senior Backend Engineer Salary: Up to £90,000 + Bonus and Benefits Hybrid: 2 days a week onsite (London) Permanent, Full Time We are partnered with an innovative start-up transforming the way people see and experience the world's best locations and experiences, financially facilitating people to explore the world with incredible savings. They are currently looking for a Senior Backend...

Backend Engineer (Rust / Python – DeFi Trading) London or Remote (Europe) A DeFi-native trading platform is building high-performance, user-focused trading tools and is looking for a backend engineer to help shape the core platform. The team strongly believes DeFi is the future of finance and is focused on making fast, reliable on-chain trading accessible to everyone. You’ll work hands-on with...

Benefits - 9% pension contribution - Stock Options - Health Insurance etc This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company - $120m VC-backed Scale-Up - One of the fastest-growing companies in the world - 'Fast...

Job Description Our vision From blockbuster films and AAA games to immersive experiences, the demand for photo-real 3D content has never been higher - but creating photorealistic assets is slow, expensive, and manual with no current scalable solution available. At M-XR, our mission is to democratise the creation of high-quality 3D assets and empower brands, studios, and creators to build...

Job Description Role: Senior Backend Engineer Salary range: 80-90k Location: x2 days pw in Central/East London Tech stack includes: Typescript, NodeJS, SQL, AWS, Terraform, Current team size: overall circa 20 (each team dedicated EM, FE, BE, iOS/Android etc) We're working with a Series C funded, healthtech startup company - their mission? helping people with addictions! They're hiring for...

Job Description Backend Engineer: Distributed Systems Specialist Location: New York or London (Hybrid) Salary: $300,000 – $350,000 USD About Us We’re a stealth-mode infrastructure venture building next-gen primitives for decentralized execution. Our mission: rethink how distributed systems scale, sync, and self-heal — with a focus on performance, modularity, and cryptographic integrity. Our...