58 Back End Engineer jobs in London

Thought Machine is solving one of the biggest problems in banking – modernising core systems. Since launching in 2014, our mission has been to liberate banks from outdated, legacy technology which stifles their ability to innovate. Thought Machine's product, Vault, is a cloud native, core banking engine built to run any type of bank – from established Tier 1 banks to new challenger banks. To move closer to achieving our mission, we are looking for highly talented individuals to join the fast growing team. With a founding team drawn from Google, we have a deep culture of engineering excellence and we believe our product focus and pursuit of excellence will engender a seismic shift in the banking industry. Thought Machine was ranked as the most desirable London fintech to work at by Sifted when comparing employee reviews on Glassdoor. AltFi also named us one of the best European Fintechs to work in 2021. We have been awarded the Fintech 50 award by FintechCity and recently named in...

Description About Xe Xe is a cross-border payments platform. We help SMEs and consumers in the US, UK, Canada, Australia, and New Zealand collect, convert, hold, and send money across markets. Each year, over 300 million people use Xe for currency information and over 350,000 use us to send money overseas. Today, we're rebuilding the platform layer behind cross-border payments for corporate and consumer clients. We're small enough that your code ships fast and your decisions matter, and Euronet Worldwide (Nasdaq: EEFT) backs us so the problems stay real-scale. About This Role We're hiring a senior back-end engineer who owns real problems end-to-end and shapes how the team builds, from API design and data modeling through to service implementation, production reliability, and launch. You already use AI as part of how you think, build, test, and ship. You'll write code that moves money in production, design and modernize the backend services the platform runs on, and lead...

Thought Machine's mission is bold – to properly and permanently rid the world's banks of legacy technology. To achieve this, we have developed the foundations of modern banking through core and payments technology which run natively in the cloud. What we are attempting is hard and means we need great people working together to build great technology. We have grown rapidly in the past few years – growing our team to more than 550 individuals across offices in London, New York, Singapore, Sydney and our newly established Engineering Hub in Lisbon. We have raised more than £500m in funding and our investors include Molten Ventures, Eurazeo, Intesa Sanpaolo, Temasek, Nyca Partners, JPMorgan Chase Strategic Investments, Standard Chartered Ventures, and more. We have created a culture that enables our team to produce the best work in the industry while ensuring we have fun along the way. We're regularly cited as having a fantastic workplace culture and have been recognised by Sifted...

Description About Xe Xe is a cross-border payments platform. We help SMEs and consumers in the US, UK, Canada, Australia, and New Zealand collect, convert, hold, and send money across markets. Each year, over 300 million people use Xe for currency information and over 350,000 use us to send money overseas. Today, we're rebuilding the platform layer behind cross-border payments for corporate and consumer clients. We're small enough that your code ships fast and your decisions matter, and Euronet Worldwide (Nasdaq: EEFT) backs us so the problems stay real-scale. About This Role We're hiring a mid-level back-end engineer who likes owning real problems end-to-end, from API design and data modeling through to service implementation, production reliability, and launch. You already use AI as part of how you think, build, test, and ship. You'll write code that moves money in production, build and modernize the backend services the platform runs on, and ship new capability as Xe...

Our LINQ platform is the software that plans, schedules, and drives life-science labs. Our clients run labs for cancer diagnostics, drug discovery, cell manufacturing, synthetic biology and more. This role owns the interface to the lab — not just the UI, but every surface someone builds on or acts through: the app a scientist touches, the APIs and SDK an integrator builds on, the CLI an engineer scripts with, the agent surface a model acts through. Most product interfaces are forms over a database. Ours front a physical world that changes by itself — robots act, schedules change, instruments fail — and every one of those surfaces has to keep its user genuinely in control. We're building the next generation of our interfaces — AI-native from the ground up: personalised to role and behaviour, UI generated on the fly where it earns its place, and agents working in the product alongside the people using it. This is a role for someone user-obsessed — the platform underneath is...

Our Story Hello there. We’re Zopa. We started our journey back in 2005, building the first ever peer-to-peer lending company. Fast forward to 2020 and we launched Zopa Bank. A bank that listens to what our customers don’t like about finance and does the opposite. We’re redefining what it feels like to work in finance. Our vision for a new era of banking puts people front and centre — we’ve built a business that empowers everyone to aim high, every day, to move finance forward. Find out more about our fantastic offerings at Zopa.com ! We’re incredibly proud of our achievements and none of it would be possible without the amazing team here. It’s not just industry awards we’re winning, we’ve also been named in the top three UK’s Most Loved Workplaces. If you embrace unconventional challenges, are unafraid to think differently and are driven to make an outsized impact, you’ll thrive here at Zopa, so join us, and make it count. Want to see us in action? Follow us on Instagram...

Ready to take your career global? Make your mark at one of the biggest names in payments. We’re looking for a DevOps Engineer to join our ever‑evolving CI/CD Platform Team at Global Payments and help shape the future of global commerce. What You’ll Own Maintain and automate AWS infrastructure using Terraform and infrastructure‑as‑code best practices. Design, build, and operate containerized platforms using Docker and Amazon EKS. Design, build, and manage CI/CD platforms and tooling, including GitHub Enterprise Runners, CloudBees Jenkins, and Harness. Administer and govern the GitHub Enterprise Cloud platform to ensure scalability, security, and reliability. Host and operate enterprise GitHub runners for organization‑wide consumption by development teams. Provide technical guidance, enablement, and consultation to development teams consuming the central CI/CD platform. Act as a GitHub and GitHub Copilot SME, promoting best practices for AI‑assisted software...

Elliptic has helped trace and disrupt over $21.8 billion in illicit crypto laundered across blockchains, from sanctioned nation states to organized crime networks hiding funds through token swaps and unregulated exchanges. It’s how compliance and investigations teams fight back, tracking and screening transactions with 99% market coverage. The infrastructure behind all of this needs to be as resilient and sharp as the intelligence it delivers. We're looking for a Lead DevOps Engineer to own and evolve our DevOps practices. This is a role for someone who combines deep technical ability with a genuine passion for growing the team. You'll lead a team of DevOps engineers while staying close to the technical work, setting direction on infrastructure, automation, and reliability. The Impact You Will Have As a Lead DevOps Engineer at Elliptic, you will have a deep impact across the company by championing DevOps, security, and reliability principles. You’ll help build a culture of...

Role Overview The Director of Engineering – UK Payments will provide senior technology leadership for ClearBank’s UK-focused payments capabilities, owning the technical strategy, delivery oversight, and evolution of this domain, providing a highly utilised and relied upon set of capabilities for clients. This role will lead an established set of teams as they evolve payments capabilities to scale and meet developing client needs. The Director will collaborate closely with Product partners to shape the long‑term roadmap, ensure robust technical foundations, and guide ClearBank’s progression in this vital domain. Key Responsibilities Strategic Leadership Own the technology strategy for UK Payments, ensuring alignment with ClearBank’s wider platform and technology strategy. Partner with the Head of Product for UK to define and evolve a clear, credible roadmap covering near‑term delivery and longer‑term technical direction. Provide domain leadership and technical...

About Us We do things differently around here. We built ClearBank on the belief that banking infrastructure would no longer slow down progress. Instead, it would be a catalyst that unlocks the potential to innovate. It would adapt to different needs so a new era in financial services could begin. We’re here to challenge the status quo in banking, are you? We all know that transforming banking forever is not an easy mission, but we’re more than ready to rise to that challenge. We all do it every day; navigating new, unexpected and sometimes even daunting challenges. But we believe in ourselves and trust we can do it. Want to innovate? Go for it. Push for a better way? You Can. If you think you have it in you, this is Where You Can. What You Can Expect ClearBank is a place where you can do things differently and challenge the status quo. We will give you a high level of autonomy and transparency, and we trust you to make the right decisions for the bank. About If that...

Ready to Take on a New Challenge in Enterprise Sales? Are you a driven, energetic sales professional looking for your next big adventure? Do you thrive on taking ownership, unlocking strategic accounts, and closing complex, high-value deals? Are you excited by cutting-edge technology in a dynamic industry, and motivated by the opportunity to make a measurable impact—not just on your career, but on the world? If so, we want to hear from you. Where You’ll Make An Impact As an Enterprise Sales Executive, you’ll join our high-performing EMEA sales team, reporting to the Head of Sales, EMEA. You'll take full ownership of your territory and become a trusted advisor to stakeholders across the Crypto and Financial Services landscape. You’re not just here to sell, you’re here to transform how leading enterprises combat crypto crime with Elliptic’s industry-leading compliance and investigation solutions. You’ll gain deep product expertise and apply your understanding of evolving...

Our Story Hello there. We’re Zopa. We started our journey back in 2005, building the first ever peer-to-peer lending company. Fast forward to 2020 and we launched Zopa Bank. A bank that listens to what our customers don’t like about finance and does the opposite. We’re redefining what it feels like to work in finance. Our vision for a new era of banking puts people front and centre — we’ve built a business that empowers everyone to aim high, every day, to move finance forward. Find out more about our fantastic offerings at Zopa.com ! We’re incredibly proud of our achievements and none of it would be possible without the amazing team here. It’s not just industry awards we’re winning, we’ve also been named in the top three UK’s Most Loved Workplaces. If you embrace unconventional challenges, are unafraid to think differently and are driven to make an outsized impact, you’ll thrive here at Zopa, so join us, and make it count. Want to see us in action? Follow us on Instagram...

Our Story Hello there. We’re Zopa. We started our journey back in 2005, building the first ever peer-to-peer lending company. Fast forward to 2020 and we launched Zopa Bank. A bank that listens to what our customers don’t like about finance and does the opposite. We’re redefining what it feels like to work in finance. Our vision for a new era of banking puts people front and centre — we’ve built a business that empowers everyone to aim high, every day, to move finance forward. Find out more about our fantastic offerings at Zopa.com ! We’re incredibly proud of our achievements and none of it would be possible without the amazing team here. It’s not just industry awards we’re winning, we’ve also been named in the top three UK’s Most Loved Workplaces. If you embrace unconventional challenges, are unafraid to think differently and are driven to make an outsized impact, you’ll thrive here at Zopa, so join us, and make it count. Want to see us in action? Follow us on Instagram...

Trust unlocks our greatest potential. For decades, the clearing of payments remained unchanged and unchallenged. We asked, what if there was a better way? What if we could make banking infrastructure faster, safer, more reliable, and easier to access for all? Here is where you can think radically and responsibly to find the best solution. What happens when you know you’re inherently trusted? Trust creates safety. Safety encourages you to be brave, to challenge, to fail, to try new things and to execute. At ClearBank everything revolves around trust. We’re not expected to earn it, but we are expected not to break it. We’re trusted to own it. To solve issues in the moment. To know a good risk when we see one, and the judgement to know that ‘can’ doesn’t always mean you ‘should’. What You Can Expect ClearBank is a place where you can do things differently and challenge the status quo. We will give you a high level of autonomy and...

We’re on a mission to back the UK’s small businesses like no one else ? Small businesses are the backbone of the economy, and we’re here to help them win. We’ve built a platform that uses clever data to get them the funding they need in minutes, not weeks. At Funding Circle, we have the restless energy of a fintech start-up with the stability of a public company. It’s a unique mix that gives Circlers the autonomy to take ownership and the scale to make an impact that truly counts. We’re a high-performing team that chooses to lift each other up. We challenge, we champion, and we have each other’s backs - because we know that when we stand together, we move faster and build better. The impact is real: Last year alone, the businesses on our platform generated £7.2bn for the UK economy ? Come and join a mission that matters! [Read our Impact Report] | [See our Trustpilot] The role ⚡ ? London (Hybrid) | ? 2 days in the office | ? Competitive Salary + Benefits What We’re...

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Payment Partnerships Manager Adyen is looking for a Payment Partnerships Manager who will advance Adyen’s strategy and agenda with key payment methods in EMEA including card networks, local and alternative payment methods, and financial institutions. In this role you will drive high-impact partnerships for Adyen and use your influence and...

The world of digital assets is accelerating in speed, magnitude, and complexity, opening the door to new ways for leveraging the blockchain. Fireblocks’ platform and network provide the simplest and most secure way for companies to work with digital assets and it trusted by some of the largest financial institutions, banks, globally-recognized brands, and Web3 companies in the world, including BNY Mellon, BNP Paribas, ANZ Bank, Revolut, and thousands more. Welcome to Fireblocks , the industry-leading digital asset infrastructure technology company responsible for 15% of all crypto transactions! Here’s The Bit About Us Fireblocks is an enterprise-grade platform delivering a secure infrastructure for moving, storing, and issuing digital assets & cryptocurrencies. At Fireblocks, we enable businesses to securely build, run and scale digital asset operations through the Fireblocks Network and MPC-based Wallet Infrastructure. Our next-generation multi-layer technology...

Do you want to build the AI systems that compliance teams rely on to investigate real financial crime? Are you excited about taking agentic workflows from prototype to production at scale? Do you want your work to directly help catch bad actors moving money across blockchains? Elliptic is hiring a Senior AI Engineer to join our AI team. It is the team behind Elliptic's copilot, the AI product that helps compliance investigators trace fund flows, surface patterns, and respond to risk in real time. This role sits at the centre of that work, designing the agentic systems, LLM integrations, and backend services that turn complex blockchain data into useful answers. You'll join a focused team that cares about the quality of what it builds and gives you the space to do your best work. There's real ownership here, breadth across AI and backend systems, and the freedom to turn good ideas into shipped products. The problems are technically challenging, and the work is visible. The...

About Us At Fenergo, we're not just building software—we're transforming how the world's leading financial institutions fight financial crime. Headquartered in Dublin and trusted by over 100 of the world's top financial institutions, we're on a mission to change the game.  We're more than a global leader in AI-powered client lifecycle management—we're reimagining how financial institutions tackle compliance. From Know Your Customer (KYC) and Anti-Money Laundering (AML) to rapidly evolving regulations, we turn complexity into clarity. Our FinCrime Operating System, powered by agentic AI and intelligent automation, helps financial institutions move faster, act smarter, and stay safer across 120+ countries.  But we don't stop there.  At Fenergo, we believe in a world where financial institutions aren't just compliant—they're confident. Where technology doesn't just meet regulations—it stays ahead of them. Our mission is to empower financial institutions to stop financial crime...

Grow with the challenge At the time of inception, cloud-based systems and API fluency were new. But that didn't scare us. We waved goodbye to legacy systems and embraced modern technology – where our true innovation began and didn't stop. No hierarchy, no egos. Just a spirit of collaboration that flows right throughout our organisation – it’s woven into our DNA. We genuinely want to know about each other’s learnings and expertise, especially where it can help us achieve bigger things. At ClearBank, we make things happen. We solve problems together because we know that many heads are always better than one. Valuing different perspectives is what sets our culture apart. And being able to disagree and commit is key to our progress. Above all we’re a team because when we win together, it feels so much better than doing it alone. What You Can Expect ClearBank is a place where you can do things differently and challenge the status quo. We will give...