27 senior software developer jobs in London

About the Role: LMAX is renowned for its high-performance, ultra-low latency (we measure in microseconds) exchange written in core Java. We constantly push technology further than most, especially in our greenfield projects, driving the financial industry in new directions. Developers are encouraged to constantly develop and learn new skills. Pair programming supports continual growth of knowledge and sharing of expertise, alongside regular team rotations ensuring everyone gains first-hand knowledge on all areas of our codebase. Friday afternoons are set aside as personal development time where you can explore a different coding language, research bleeding edge technologies, or play around with one of our environments. There is also regularly scheduled time to improve developer experience and reduce technical debt - directed by developers. Our continuous integration and testing culture allows us to have confidence in our builds and develop quickly. We have over 30,000...

LMAX is renowned for its high-performance, ultra-low latency (we measure in microseconds) exchange written in core Java. We constantly push technology further than most, especially in our greenfield projects. Together, we will be driving the financial industry in new directions. Finance is going to be tokenised through the use of blockchain technologies. We want to be at the forefront of that wave, working with the institutions to build efficient, regulated and fair markets. We have gone from one developer to a small team over the last year and have already built a brand new trading solution, taking the best of centralised liquidity and decentralised security. It is live on public blockchains, we're not just prototyping. Our vision is a lot more than just this, so we need to grow into multiple teams as we shape the future of the financial landscape. Our roadmap is heavily developer driven, with CEO buy in, meaning you can substantially influence the direction of the project....

LMAX is renowned for its high-performance, ultra-low latency (we measure in microseconds) exchange written in core Java. We constantly push technology further than most, especially in our greenfield projects. Together, we will be driving the financial industry in new directions. Finance is going to be tokenised through the use of blockchain technologies. We want to be at the forefront of that wave, working with the institutions to build efficient, regulated and fair markets. We have gone from one developer to a small team over the last year and have already built a brand new trading solution, taking the best of centralised liquidity and decentralised security. It is live on public blockchains, we're not just prototyping. Our vision is a lot more than just this, so we need to grow into multiple teams as we shape the future of the financial landscape. Our roadmap is heavily developer driven, with CEO buy in, meaning you can substantially influence the direction of the project....

About Us We are a global FinTech & RegTech success story growing rapidly across North America, Europe, and Asia. We are customer-centric and passionate about our clients. We have an amazing market fit and are operating in the right market with the right solutions. Our clients are facing evolving risks, massive cost increases, and a crowded competitive landscape, compromising their growth trajectory and overall profitability.  Fenergo is leading the market transformation of Client Lifecycle Management, designed to drive automation and scale, improve our clients-clients user experience, and accelerate the adoption of Cloud Services within our industry.  As such, we are a category-killer in our segment.  Our brand exemplifies credibility and thought leadership, garnering numerous awards for our digital customer journeys, solutions, and services.  Today, we are on track to eclipse 2B USD in valuation and will accelerate towards 3-4B USD within :3 years. If you are hard-working,...

CMC Markets has a great new opening for a Senior Full Stack Developer to join our team in London. A excellent opportunity for someone with hands on experience coding in AWS Serverless, Python, TypeScript and ideally Flutter, This role will be part of Opto, an exciting internal start-up wholly owned by CMC. Launched in the USA just six months ago, Opto stands out with its unique offering: 'Folios'—self-directed funds with automated rebalancing. These funds are designed to help investors stay disciplined and diversified, aligning with our mission of empowering individuals to invest successfully. If you're passionate about making a meaningful impact in the investment world and contributing to a fast-growing, innovative venture, Opto is the place for you. ROLE AND RESPONSIBILITIES Lead the development of new features for our core product and AI offering, working across both frontend and backend, and collaborating closely with a product manager to deliver impactful solutions....

Join CMC Markets' Pricing and Risk team, where you’ll work on our low latency, high-frequency trading platform. You will use cutting-edge Java programming techniques so experience in this area is essential. As a Senior Developer, you’ll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the team, driving innovation in a fast-paced, high-stakes environment. If you’re ready to make a real impact on global markets, we’d love to hear from you! What You’ll Do Expert Level Java Development: You will apply your in-depth knowledge of the Java programming language (8->21) to implement world class trading and pricing systems. Collaborative Development: Design and develop innovative pricing and risk components for our market-making operations, impacting a wide array of asset classes. Cross-Functional: Partner with financial engineering, quant teams, and other key business groups to ensure seamless product...

Join CMC Markets Pricing and Risk team, where you’ll work on our low latency, high-frequency trading platform. You will use cutting-edge Java programming techniques so experience in this area is essential. As a Senior Developer, you’ll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the team, driving innovation in a fast-paced, high-stakes environment. If you’re ready to make a real impact on global markets, we’d love to hear from you! What You’ll Do Expert Level Java Development: You will apply your in-depth knowledge of the Java programming language (8->21) to implement world class trading and pricing systems. Collaborative Development: Design and develop innovative pricing and risk components for our market-making operations, impacting a wide array of asset classes. Cross-Functional: Partner with financial engineering, quant teams, and other key business groups to ensure seamless product...

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...

CMC Markets is hiring!! We are looking for a Senior Java Low Latency Engineer to develop and enhance the technology underpinning our rapidly growing Institutional business. As part of the Institutional Core Services team, you will work alongside experienced engineers building and maintaining mission critical FIX APIs, which provide connectivity to CMCs global multi-asset trading platform. What you’ll be working on: You’ll be designing, implementing, maintaining, and supporting ultra-low latency FIX APIs Handling distribution of real-time market data to customers Handling order instructions across a variety of asset classes including CFD, FX, cash equity, and a wide variety of order types including algorithmic and advanced order strategies Utilising Java with specialised low latency programming and optimisation techniques Providing on-call technical support outside UK office hours Who are we looking for? Excellent knowledge of Java Understanding of low latency...

Join CMC Markets' Pricing and Risk team, where you’ll work on our low latency, high-frequency trading platform. You will use cutting-edge Java programming techniques so experience in this area is essential. As a Senior Developer, you’ll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the team, driving innovation in a fast-paced, high-stakes environment. If you’re ready to make a real impact on global markets, we’d love to hear from you! What You’ll Do Expert Level Java Development: You will apply your in-depth knowledge of the Java programming language (8->21) to implement world class trading and pricing systems. Collaborative Development: Design and develop innovative pricing and risk components for our market-making operations, impacting a wide array of asset classes. Cross-Functional: Partner with financial engineering, quant teams, and other key business groups to ensure seamless product...

LMAX is renowned for its high-performance, ultra-low latency (we measure in microseconds) exchange written in core Java. We constantly push technology further than most, especially in our greenfield projects, driving the financial industry in new directions. Developers are encouraged to constantly develop and learn new skills. Pair programming supports continual growth of knowledge and sharing of expertise, alongside regular team rotations ensuring everyone gains first-hand knowledge on all areas of our codebase. Friday afternoons are set aside as personal development time where you can explore a different coding language, research bleeding edge technologies, or play around with one of our environments. There is also regularly scheduled time to improve developer experience and reduce technical debt - directed by developers. Our continuous integration and testing culture allows us to have confidence in our builds and develop quickly. We have over 30,000 acceptance tests running...

We are looking for a Senior Fullstack Engineer to join our CMC Wealth engineering team. The ideal candidate will be someone who wants to take on a leading role in driving technical direction, mentoring engineers, and ensuring we build robust, scalable, and high-quality solutions. We need a Senior Fullstack Engineer who is comfortable working across all aspects of our technology stack to help us deliver an exceptional customer experience. To be successful in this role you will need to be passionate about solving technical challenges, building best-in-class systems, and continually improving. If you are excited by the prospect of working in a collaborative environment where innovation is encouraged and creativity is rewarded, then this is the opportunity for you. *** Please note that we operate onsite working and would require you to come into the office 5 days per week. *** Why join our engineering team? We have big ambitions and a comprehensive backlog of ideas to make our...

Joining Capco means joining an organisation that is committed to an inclusive working environment where you’re encouraged to #BeYourselfAtWork. We celebrate individuality and recognise that diversity and inclusion, in all forms, is critical to success. It’s important to us that we recruit and develop as diverse a range of talent as we can. We believe that everyone brings something different to the table- so we’d love to know what makes you different. About Capco Capco is a global technology and business consultancy, focused on the financial services sector. We are passionate about helping our clients succeed in an ever-changing industry. We Are/have Experts in banking and payments, capital markets and wealth and asset management Deep knowledge in financial services offering, including e.g. Finance, Risk and Compliance,Financial Crime, Core Banking etc. Committed to growing our business and hiring the best talent to help us get there Focus on maintaining our nimble,...

Job Description 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...

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...

We are a leading trading platform that is ambitiously expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talent team. Capital.com is a global trading platform offering clients to invest in Gold, Oil, Apple, Tesla and 6,500+ other world-renowned markets. We are enhancing our Backend Team and looking for great Engineers with an interest in trading to join our Team! Our Engineering Management team plays a pivotal role in ensuring the robustness, speed, and security of our Product and delivery of the new initiatives. Dedicated to enhancing performance, providing a best-in-class user experience, ensuring compliance, and safeguarding data, the team's efforts directly impact our ability to offer clients a seamless and secure trading journey. We are seeking a skilled...

Join CMC Markets' Pricing and Risk team, where you’ll work on our low latency, high-frequency trading platform. You will use cutting-edge Java programming techniques so experience in this area is essential. As a developer, you’ll not only code but also take on key design responsibilities, shaping impactful projects. If you’re ready to make a real impact on global markets, we’d love to hear from you! What You’ll Do Level Java Developmen t: You will apply your in-depth knowledge of the Java programming language (8->21) to implement world class trading and pricing systems Collaborative Developmen t: Design and develop innovative pricing and risk components for our market-making operations, impacting a wide array of asset classes Cross-Functiona l: Partner with financial engineering, quant teams, and other key business groups to ensure seamless product delivery and support. Hands-On Problem Solvin g: Work closely with Front Office users and Business Operations to...

Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a Senior Front-End Engineer with experience in crypto and Web3 technologies to join our engineering team and build the next-generation Blockchain apps. This is an opportunity to develop one of the most popular and visited websites in the crypto ecosystem. In this role, you will be responsible for delivering user interfaces that power future wallets, block explorers, financial and market data products, as well as innovative visualizations. Our engineering teams are involved in all aspects of the product life cycle, from idea generation, design, prototyping, planning, execution and shipping. WHAT YOU WILL DO You will be a part of Web Front-End team which oversees all Web UIs for...

IG’s UK Division is seeking an exceptional technology lead for exciting new projects that will enable and deliver faster end-to-end products to better serve customers and drive growth. As the successful candidate, you will be dissatisfied with the status quo, and determined to build better, safer, and faster. You will have hands-on experience in building financial systems in the enterprise and embedding modern engineering practices. You will have proven experience in effective coaching, coordinating complex projects, envisioning and evangelising enterprise architecture, and influencing decisions across technology teams and the business. Who are we: Hello, we’re IG Group. No, not Instagram – though we're a pretty big deal ourselves. We’re a global, FTSE 250-listed company made up of a collection of progressive fintech brands in the world of online trading and investing. The best part? We’ve snapped up many awards for our top-class platforms,...

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...