101 to 125 of 163 Software Engineering Jobs in the City of London

Senior Software Engineer - Banking/Payments London – Hybrid (1 day per week onsite) Are you a senior, hands-on Engineer who thrives in event-driven, asynchronous environments? Do you enjoy building low-latency, high-throughput distributed systems where correctness, resilience, and performance really matter? This is an opportunity … secure, real-time payments at global scale. What You’ll Be Doing You’ll play a senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime. Design and implement high-throughput, low-latency systems processing millions ...

About PRODA At PRODA (www.proda.ai) we are building software to unlock the full potential of Real Estate Data no matter the asset class, language, or country of origin. Our solution leverages the latest technologies to automatically capture, standardise and quality check Real Estate data into a single, clean source … client base with an even better sales pipeline. We are looking for you to join us on our exciting journey delivering best-in-class software to the Commercial Real Estate market globally. Role We are looking for a Software Engineer to join the team at PRODA that works ...

Graduate Software Engineer - Portfolio Management £45K - £55K + Bonus + Bens A small, high-performance team at the centre of a specialist risk manager are looking for several Computer Science/Maths graduates to join them in London. You will be joining a team that builds systems and tooling ...

Senior Software Engineer Location: London (x3 days a week onsite) Salary: Up to £80k DOE Type: Perm Job Description We are looking for a passionate Senior Java Engineer in London to lead the design and development of core product features and services that power an app used by thousands ...

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 5+ years C++ experience (ideally more) and excellent knowledge of Python - ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity, FIX Protocol and some Low Latency experience. … work with the Product, Infrastructure and QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this ...

Senior Software Engineer/Team Lead (Windows C/C++, C#) London to £115k FTC Are you a skilled C++ Software Engineer with technical/team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands-on role at a global … market data provider. As a Senior Software Engineer/Team Lead you will head-up an Agile team (5 engineers) focussed on building and maintaining Exchange Connectivity software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. ...

review activities across web, API, and internal applications to validate automated findings and uncover additional weaknesses. Triage, verify, and risk-rank vulnerabilities, partnering with engineering and application teams to ensure findings are accurately understood and remediation actions are practical and prioritised. Monitor and drive remediation progress, tracking closure … vulnerabilities and supporting engineering teams with root-cause analysis to reduce repeat issues. Contribute to secure development practices, helping to maintain secure coding standards, patterns, and reusable security controls or guardrails. Operate and optimise AppSec tooling within CI/CD workflows, supporting the organisation's DevSecOps journey and enabling ...

London (Occasional Travel required) Salary: £75,000 - £95,000 An established, global technology business within the hospitality-tech industry is seeking a talented Backend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that … doing? Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer ...

Lead Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead Software Engineer with extensive knowledge of building distributed systems? Looking to join … so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Lead Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world ...

Lead Software Engineer | Major Legacy Transformation (NPPV3 & SC Required) Rate: £550 per day (Inside IR35) Location: London/Remote Hybrid Duration: 6–12 Months Clearance: Active NPPV3 and SC Clearance (Essential) The Opportunity Our client, a premier global consultancy, is seeking a Lead Software Engineer to take … Clearance . We cannot consider candidates without these active clearances due to the immediate start date. Leadership: Experience leading technical teams through the full software development lifecycle (SDLC) within a consultancy or government framework. Availability: Must be available to start within 1–2 weeks. Preferred Skills (Nice to Have ...

Software Engineer London | Full-time | Hybrid | Shoreditch/Liverpool Street Create the Future of Travel With Us Whether it's visiting the people closest to us, starting an exciting adventure, or a career-defining business trip, travel is essential. Yet we've all experienced the aches and pains … world's largest companies. Our London team is growing, and we're looking for talented people to join us on our journey. Engineering at Duffel We're building tools to simplify travel distribution, search, and booking through one seamless API. The technical challenge? Design a beautiful API, then integrate ...

Software Engineer | Energy & Climate Tech | London (Hybrid) We are hiring a Software Engineer to join a scaling Energy Tech startup that’s tackling climate change head-on. They’re backed by top-tier investors (think the people behind Meta, BeReal, and Slack) and scaling at speed. … building the software infrastructure for a decarbonised energy system—writing production Python code that controls tens of thousands of assets like EV chargers, heating systems, and home batteries. Their platform shifts energy use to times when it’s cheaper and greener, with ML models predicting demand in real time. ...

+ RSU's + Benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven … What will I be doing? Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. Design, develop, and oversee the delivery of robust, production-grade software ...

+ RSU's + Benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven … What will I be doing? Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. Design, develop, and oversee the delivery of robust, production-grade software ...

C++ Software Engineer – High-Frequency Trading A systematic trading firm of similar calibre to leading names in the space is seeking exceptional C++ Software Engineers to join its world-class engineering team. This is a hybrid position, open to candidates based in London or has the right … work in London. You will be part of a highly collaborative, low-ego engineering culture that prioritises performance, innovation, and impact. Working alongside some of the brightest minds in quantitative trading and systems engineering, you will build and optimise ultra-low latency, high-throughput systems that operate ...

Role: Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. … applications. Being part of the Online team, you will be working closely with engineers, designers and the product team. While this is primarily an engineering role, we are always looking for developers who have a keen eye for product and who can contribute to the development of features ...

Services & Risk Viewer Senior Developer to join an exciting growing GIT - CMI - Risk FX IT department with a global leading internation bank. This senior software development position requires a candidate with outstanding skills in C# and TypeScript/React, and a robust understanding of pricing models and risk analytics … both vanilla and exotic FX derivatives. The role involves close collaboration with business analysts, traders, and software engineers to ensure seamless integration into real-time trading platforms. Day-to-day of the role: Design and implement pricing and risk analytics tools for FX cash trades and options, including exotic ...

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where technology … highly scalable, ultra-low latency trading systems that compete across major global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers ...

platform changes that, by helping primary care teams identify risk earlier, intervene sooner, and deliver better outcomes , without adding operational burden to clinicians. The software already supports millions of patients and hundreds of care providers , and there just getting started. As they scale, doubling down on speed, clarity … execution, while building a world-class engineering organisation that ships fast and delivers real-world health impact. The Role We're looking for a Senior Software Engineer who cares deeply about building high-quality software and about the outcomes that software creates. You'll join ...

Software Engineer | Security Platform | London Want to work on problems that actually matter at cloud scale? This VC-backed security startup is re-architecting how enterprises secure the cloud. They’re already processing billions of events every week , doubling ARR quarter-over-quarter , and showing up on multiple “Startups … Watch” lists — and they’re just getting started. They’re now hiring Software Engineers to help evolve the core platform, scale critical systems, and push the boundaries of modern cloud security. You’ll be joining a world-class engineering team tackling genuinely hard problems: distributed systems, large-scale ...

Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack … mobile applications. In this role, you will collaborate closely with our Principal Engineer and the Mobile Apps team members. While this is primarily an engineering role, we are always looking for developers who have a keen eye for product and who can contribute to the development of features ...

Senior/Lead Software Engineer – 📍 London | Full-Time | Fintech/Crypto I'm partnered with a leading global media and data platform in the digital asset space, who are looking for Senior & Lead Software Engineers to join their London based engineering team. You’ll play … platform Collaborating with product, data and infrastructure teams to ensure seamless system integration Creating detailed internal documentation and conducting peer reviews to uphold high engineering standards Building robust test coverage including unit, integration and E2E tests What You need: Significant experience building high-throughput, scalable systems Deep expertise ...

seeking a C++ Engineer to join their equities data team , helping scale the next generation of data-processing systems within a collaborative engineering leadership team. This role ideal for someone who thrives on solving deep engineering challenges in C++. The Role Development for the firm’s equities data … orchestration, data tooling, and process automation. Experience with large-scale financial or market data , particularly equities or other exchange-traded products. Familiarity with modern engineering practices — CI/CD, source control, automated testing, and containerised deployment. Excellent communication, organisational, and problem-solving skills. Contact: For further details ...

About Euphoric Euphoric builds AI-first employee benefits administration software for the world’s largest and most prestigious employers. Born out of Peppy Health — a fast-growing, category-defining Series B startup — we spun out in May 2025 to tackle a far bigger opportunity. Global employers spend … first platform and serve as our resident expert. You won't just be tuning hyperparameters in a notebook; you will be a core software engineer architecting the complex systems that make AI useful in production. In the immediate future, your time will be split between crafting complex AI processing ...

Senior Embedded Software Engineer Salary : Up to £100,000 Location : London - 3 days a week We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users … with seamless, intelligent technology solutions. We are looking for a modern, innovative and driven Senior Embedded Software Engineer to join their growing team. They are looking for someone who has commercial experience working with C software development in an IoT, hardware or embedded solutions environment , who is interested ...