Backend jobs in London - Page 3Create job alerts

Our client, a world leading hedge fund is seeking a highly skilled UI/Full-Stack Developer to join their elite technology team supporting front office trading systems in their London office. Collaborate closely with traders, quants, and backend engineers to deliver intuitive and responsive UIs th...

C++ Developer / Backend Software Engineer (Windows C / C++, C#) London to £70k FTC Are you a skilled C++ Developer? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a C++ Developer / Backend Software...

CONTRACT INSURANCE SOLUTIONS ARCHITECT - Applications & Integrations focus 6-12m contract, inside IR35 Focus on Applications & Integrations INSURANCE EXPERIENCE ESSENTIAL Legacy to Cloud program of work Insurance experience essential Migration and Integration from Oracle backend to Azure fro

Backend Developer £500/pd outside IR35 (1 month contract) Start date: ASAP Contract Length: 1 month Location: Remote My client is seeking a skilled Back-End Developer with a strong background in Node. Key Responsibilities: Design and maintain back-end services using Node.

Senior Software Engineer – Java Backend London (5 days onsite, with some ad-hoc flexibility) £85,000 – £120,000 (Permanent) TechHeads is currently seeking a Senior Software Engineer with strong Java backend experience, DevOps awareness, and proven technical leadership capabilities to join our

This is a hybrid role in London (3 times per week) and are looking for people that have come from an AI Background , also with the following experience: 5 years of experience in backend/infrastructure development Proficiency in at least one backend programming language such as Python Strong knowl...

You will design and build backend systems/models in scalable code to be implemented into a cutting-edge modelling and data analytics infrastructure to accurately track and capitalize on the live supply and demand for European Power and Natural Gas.

Requirements:5+ years of experience as a Solution Architect in cloud-native environments. Proven experience with backend systems, microservices, and cross-functional technical projects. Strong knowledge of Google Cloud Platform (or similar), messaging sys

If you are passionate about building delightful experiences across the front and backend and want to grow your career on a cutting edge tech stack, we want to meet you! How You’ll Contribute as a Full Stack Engineer : Develop fast, secure, and scalable full stack applications using Web Components...

Youll: Design and build ML models from scratch using Python TensorFlow/PyTorch Ship features across both frontend and backend (FastAPI for now) Work on NLP, CV, generative AI (GANs/LLMs), and time-series models Own end-to-end ML capabilities: from idea to deployment Learn fast and contribute fast...

What You’ll Do Design and develop highly scalable backend systems to support real-time, distributed networking Build and optimize software for cloud, on-prem, and hybrid deployments Work with Kubernetes, Docker, and cloud technologies (AWS, GCP, or Azure) Implement and optimize algorithms for net...

Team: Backend Location: London (Liverpool Street) Employment Type: Full-time and Permanent Remuneration (London; On-site): £90–120k Base Salary Discretionary Bonus Equity We are a stealth-mode AI laboratory researching and developing Machine Learning models.

Backend Developer – Python £650/day – 6 months – Inside IR35 – 3 days onsite (London) Python – Kafka – AWS – TypeScript – Commodities Trading Youll be working for a leading energy trading business, building out a modern post-trade platform thats genuinely pushing boundaries – live

Staff Software Engineer | Full Stack | 8 years of experience £120 - £145k depending on experience Serverless AWS, Typescript (for backend), Next. Theyre highly ambitious, scaling quickly and youll have the opportunity to work directly with enterprise customers, and have a huge impact as well as

We believe in better. And we make it happen. Better content. Better products. And better careers. Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innova...

As a Senior Ruby Developer, you will play a crucial role in developing and maintaining our Ruby-based backend applications while driving initiatives across DevOps, database architecture, and team leadership. Your experience will help guide the development process and the growth of junior develope...

Senior Software Engineer – VC-backed Digital Health – Over 1 million users globally 🚀. We’re currently partnered with a rapidly growing AI venture backend start-up who are looking for a Senior Software Engineer to join their growing team. As they prepare to raise Series A, they are looking

Full Stack Senior Developer - SC Clearance, Java, AWS, Docker React £550 per day Inside IR35 12-month contract Hybrid Working (London) I am currently recruiting for a leading Consultancy who are actively looking for an SC Cleared Fullstack Developer to work on a business critical project. M...

NodeJS Developer - NodeJS Engineer -TypeScript - Data - TDD - AWS - 6 Months - Paying up to £650 (Inside IR35) - Hybrid You will be an integral part of the backend engineering team, building and developing the tooling and pipelines that form their data ingestion and modelling machine. Paying ...

IDEXX is looking for a Senior Data Engineer to join the Veterinary Software team in London! This is an exciting opportunity for a a data engineer looking to expand their technical leadership skills and make an impact in a meaningful industry. This role will be hybrid 2 days onsite in our Wim...

Summer Internship at WhatInMyWater Company Description WhatInMyWater aggregates UK water data into a powerful, enterprise-grade dataset and user-friendly service. Our platform empowers individuals with personalised water-quality reports based on their postcode, backed by collaborations with...

Our client, a world-leading trading firm is currently seeking a Senior Full-Stack Developer specialising in Java with some Python and React, to join their Commodities Trading Desk in London. This is a fantastic opportunity to work in a low-frequency trading team focused on building high-performan...

Senior Full Stack Engineer - Ruby on Rails / React Remote-first (must be UK-based) £70,000 - £80,000 About the Role A fast-growing sports tech company is looking for a Senior Full Stack Engineer with strong Ruby on Rails experience and solid React skills to help shape the future of their prod...

About Us Equity research runs on powerful but siloed Excel workflows — making it difficult to connect with modern tools and AI. Stellar Fusion is building the infrastructure that unlocks the full potential of the sell-side workflow, where the success of AI depends on structured, high-quality dat...

Software Engineer - Backend Data Reporting | Leading Fintech Unicorn Our client, a top-tier unicorn in the fin-tech space, is looking for a Software Engineer to join their team and take ownership of designing and developing critical reporting systems for their back-end data platform. This is a h...

Senior Frontend Engineer - React, TypeScript - Permanent, London - Hybrid Senior Frontend Engineer required! A Senior Frontend Engineer with expertise in React and TypeScript is needed to join an ever-expanding IT team of a leading specialist (re)insurer. As a Senior Front-end Engineer, you wi...

A rapidly growing Series-A tech start-up founded by two of Revolut's earliest hires are looking to hire several Senior Backend Engineers across the TS and Node stack.

Location: 3 days p/week in London.Developer - would you like the opportunity to work for a FinTech Start-up who are looking to change how insurance payments flow? This is an exciting opportunity for a Senior Node.Developer to join an organisation, where you will work directly with their highly ex...

Senior Full-stack Engineers - Vue + Node (if you have React, that's fine). A rapidly growing Series-A tech start-up founded by two of Revolut's earliest hires are looking to hire several Senior Backend Leaning Fullstack Engineers across the TS, Vue and Node stack.

I am working with a new scaleup client in the exciting healthtech space that has helped over 1 million patients to date, with applications in subscription, fitness and tracking, across a number of conditions.They are on an exciting scale-up journey following growth and investment rounds.They are ...

Whether you prefer backend or full-stack development, you’ll take ownership of features from development through testing to deployment. Senior Java Developer | £70k–£80k | Java, React, GCP | 100% Remote. As a Senior Java Developer, you’ll be part of a small, agile team where your voice truly

I am supporting a very exciting scale-up Start-Up based in the City of London with their search for a Frontend Developer!. You'll work alongside a team of Frontend & Backend Engineers (Python) and work on their two core AI Driven Products.

I'm on the lookout for a talented ruby developer who is not only proficient in backend development but also has hands-on experience with AI tools and technologies. You'll work closely with our product and AI teams to build scalable, intelligent applications that serve thousands of users. Collabor...

Champion agile engineering practices across cross-functional squads. Manage engineering capacity, prioritization, sprint planning, and release cycles in collaboration with product and design. Grow, mentor, and lead a world-class engineering team across frontend, backend, DevOps, QA, and AI/ML fun...

Lead Backend Engineer | Python | On-site | 90k - 110k Dependent On Experience.Our client is a Fintech Data Analytics Company and they are looking for a Tech Lead who will join a team with ambitious plans.Reporting to the Head of Engineering, you will work closely with the CTO, Data Engineering an...

Solution Architect – SaaS | Lead Architecture Across a Modern Fintech Platform. Skilled in architectural best practices such as domain-driven design, CQRS, and distributed systems thinking. Familiarity with frontend architecture (Angular or similar) and its integration with backend services.

About the Role We’re looking for experienced engineers to help design and build global-scale libraries, modules, and platforms using modern, cloud-native technologies. You'll work on systems that are secure, well-tested, and designed for internal use across the organization. This role focuses on...

🚀 Staff Software Engineer |Lead Engineer | Principal Engineer | £120K | Hybrid - London Staff Software Engineer - .NET | London (Hybrid) We're working with a high-growth, tech-driven company undergoing a major platform modernisation and are looking for a Staff Software Engineer to join the...

Senior Go Developer London, UK 6 Month Contract An incredible opportunity for an experienced Senior Go Developer with strong backend engineering skills to join a prestigious tech client on a contract basis. Known for its high bar for engineering quality, this isn't your typical banking or fint...

Cure Talent is thrilled to partner with a rapidly growing medical technology company behind an award-winning medical device and transformative telehealth platform. We are seeking an experienced DevOps Engineer to join their talented team (hybrid working). The successful DevOps Engineer will p...

Senior Backend Engineer (Node.js) - FinTech Salary: £90,000 - £105,000 Location: 3 days p/week in London Senior Node.js Developer - would you like the opportunity to work for a FinTech Start-up who are looking to change how insurance payments flow? This is an exciting opportunity for ...

NodeJS Developer - NodeJS Engineer - Data - TDD - AWS - 6 Months - Paying up to £650 (Inside IR35) - Hybrid You will be an integral part of the backend engineering team, building and developing the tooling and pipelines that form their data ingestion and modelling machine. Paying up to...

🧩 Mid-Level Full Stack Engineer (Contract) 📍 Liverpool Street, London (Hybrid – 2 days onsite) 💼 Outside IR35 | £400/day 🗓️ Start: Mid-to-late June 🚀 Join a high-impact feature team modernising platforms and services as part of a major transformation programme. 🔧 What Y...

numi are incredibly proud to have this new partnership with not just another tech company; they're on a mission to fundamentally change how organisations understand the world around them. They're tackling the "understanding gap" head-on, using cutting-edge AI to deliver insights that truly ...

Company My client are a fast-growing startup revolutionising the hospitality industry by connecting businesses with a flexible, student-powered workforce. The platform enables partners—from local pubs to multinational chains—to optimise staffing in real-time, enhancing efficiency and profitabil...

We’re hiring a Software Engineer to support the transformation of the UK’s Suspicious Activity Reporting Service (SARS) — a national platform at the centre of how financial intelligence is used to combat serious and organised crime. This is a long-term engagement within a secure environment,...

At Beam, you get to do work that matters. We’re solving the world’s toughest social problems. And we’re growing fast 🚀 It’s not easy. Nothing worth doing ever is. But we take care of everyone who works here with everything from coaching to personal budgets and pay highly competitively. ...

🚀 Contract Full-Stack Product Engineer 📍 Location: Hybrid (London) 📅 Contract Length: 6 months Join Natcap – A Startup on a Mission to Scale Securely At Natcap, we’re building the infrastructure that empowers sustainability decisions at scale. As we rapidly grow to meet enterprise d...