backend engineer jobs in Greater London

Backend Software Engineer / Developer (Linux SQL C++17) London / WFH to £110k Global-leading FinTech is seeking a senior Backend Software Engineer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities and derivatives post-trade processing technology, and have...

Kulipa is a financial services platform built on the infrastructure of tomorrow: Stablecoins. Stablecoins are dollars (and other fiat currencies) tokenized on a blockchain. They are gaining massive adoption throughout the industry, replacing inefficient financial payment rails. We bring the higher efficiency and richer opportunities of stablecoin economies to companies and individuals,...

Backend Engineer (Node.js / TypeScript) | London A high-growth, compassionate financial services startup, focused on a global marketplace, is hiring for a foundational Backend Engineer. This is a mission-driven company, backed by top-tier investors, that is building a platform to provide essential and secure financial services to underserved communities. The Role: This is a critical,...

About Sequence Backed by a16z and Salesforce Ventures, Sequence is reinventing the accounts receivable category, building a flexible toolkit to help B2B finance teams to scale their revenue collection infrastructure.The team behind Sequence has decades of experience building and operating category-defining marketplace, machine learning, fintech, and enterprise software companies. We are no...

Overview GSK is a science-led global healthcare company with a special purpose: to help people do more, feel better, live longer. We are on an audacious journey to impact the health of 2.5 billion people over the next decade. Our R&D division is at the forefront of this mission, dedicated to the discovery and development of groundbreaking vaccines and medicines. We are transforming the landscape...

Senior Backend Engineer – Python & DevOps Hybrid (London | 3 days per week) £70,000 – £130,000 + Equity + Benefits Digitech are exclusively partnered with a high-growth AI SaaS start-up operating globally. The company has launched a state-of-the-art AI-driven platform and is entering a significant expansion phase, having scaled rapidly over the past 18 months across engineering, sales, and...

Backend Engineer | Contract (Outside IR35) | Up to £425p/d | Python, Django, REST APIs To be considered for an interview, please make sure your application is full in line with the job specs as found below. We have several urgent Python contract roles (outside IR35) available to work for an award-winning FinTech Scale up, they operate out of the automotive industry working as a digital payments...

Backend Software Engineer / Developer (Windows C / C++, C#) London to £70k FTC Are you a skilled Backend Software Engineer with strong C++ skills? 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 Backend Software Engineer you will join an Agile team focussed on building and maintaining Exchange...

Backend Engineer | Contract (Outside IR35) | Up to £425p/d | Python, Django, REST APIs We have several urgent Python contract roles (outside IR35) available to work for an award-winning FinTech Scale up, they operate out of the automotive industry working as a digital payments and insight platform across the UK and Europe. They have just raised over £75 million in series B...

Senior Backend Engineer Golang Apply (by clicking the relevant button) after checking through all the related job information below. Overview We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice...

Join to apply for the Senior Product Engineer [Backend] role at AttioJoin to apply for the Senior Product Engineer [Backend] role at AttioThis range is provided by Attio. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range Direct message the job poster from AttioAttio is on a mission to redefine CRM for the AI era.We’re...

Backend Engineer (Kotlin) – Hybrid (London) – Up to £80k Join a rapidly growing cleantech company as a Mid Backend Kotlin Engineer, helping to accelerate the global move toward clean and affordable energy. The team is building an integrated hardware and software smart-grid platform that powers residential EV charging, using data, AI, and strong partnerships to connect vehicles, chargers, people,...

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.

Want to put your job search on autopilot? Join our platform, complete a 6-minute AI screening interview, and get auto-applied to 100s of high-paying roles. Sign up now at https://app.calyptus.co/auth/candidate/sign-up and let the opportunities come to you. ____________________________________________________________ Responsibilities - Design and implement scalable backend services using...

Senior Backend Software Engineer – Node.JS Hit Apply below to send your application for consideration Ensure that your CV is up to date, and that you have read the job specs first. About the Opportunity An innovative, fast-growing technology company is searching for a Senior Backend Software Engineer to join its core engineering team. This organisation is building next-generation automation...

Senior Backend Engineer – Join a profitable FinTech Scale-Up 🚀 💰Up to £100,000 🏡Remote working – once a month onsite in London 💻Python, PostgreSQL FastAPI, Django We’re partnered with a leading FinTech scale-up who are transforming how small businesses access finance to grow and scale. The business is backed by a strong track record and with an ambitious mission, they’ve successfully provided...

Senior Backend Engineer Ensure you read the information regarding this opportunity thoroughly before making an application. We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. This is not...

Senior Backend Engineer - £400pd Outside IR35 Skills, Experience, Qualifications, If you have the right match for this opportunity, then make sure to apply today. We're partnered with a scale-up business who have recently raised ~£80m in funding and are looking for Backend Engineers to join an initial 3 month project with extensions very likely. - 2 days per week onsite in Hammersmith (you...

Backend Engineer - Python, Rust Paying £90k-£140K + Equity 5 days a week onsite in Central London Oliver Bernard have partnered with a stealth AI company, founded by world-class engineers with backgrounds from top-tier Silicon Valley firms, is looking to grow its core engineering team in London. This is a rare opportunity to join a well-funded, product-focused startup that's tackling one of...

Senior Backend Engineer We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. This is not a standard backend role. We are seeking a foundational engineer to own our single greatest strategic...