24 of 24 Remote/Hybrid Software Engineer Jobs in the City of London

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) ***This is a hybrid role, 3 days remote and 2 days in the office*** Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions … Limited does not discriminate in regards to age, gender, national origin, religion or any other basis. An excellent opportunity has arisen for a Senior Software Engineer C++to join a friendly team my client are a well-established exchange (FinTech, Financial Technology) based in the City. My client ...

C# Software Engineer/Developer (Azure API) London/WFH to £90k Are you a backend focused C# Software Engineer with a strong knowledge of Azure? You could be progressing your career in a senior, hands-on C# Software Engineer role at a hugely … successful, global health/wellness company. As a C# Software Engineer you'll join a team acting as a tech incubator within the wider business who are enabling the business to transform from fitness through to a lifestyle and wellbeing experience, via the customer facing member engagement platform. ...

C# Software Engineer/Developer (Azure API) London/WFH to £90k Are you a backend focused C# Software Engineer with a strong knowledge of Azure? You could be progressing your career in a senior, hands-on C# Software Engineer role at a hugely … successful, global health/wellness company. As a C# Software Engineer you'll join a team acting as a tech incubator within the wider business who are enablin click apply for full job details ...

Software Engineer/Developer (Java SpringBoot AWS) London/WFH to £90k Are you a Java technologist seeking a role where you can work on ground breaking technology, continually learning and progressing your career? You could be joining a global technology consultancy. As a Software Engineer … microservices environments You have a good knowledge of REST APIs You have a good understanding of AWS You have a thorough understanding of software development and Computer Science fundamentals such as Object Oriented Programming, Data Structures and Design Patterns You are familiar with DevOps, CI/CD pipelines ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join … UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience having a direct impact from the get-go. ...

Robotics Software Engineer – Flight Software Location: Oxfordshire or London (remote first, monthly office visit) Salary: up to £55,000 + benefits I’m supporting a fast-growing UK start-up that is building cutting-edge assurance systems to make AI-enabled robotics and autonomous systems operate safely … reliably in safety‐critical environments. They are looking for a Robotics Software Engineer to join the team developing core robotics software components that underpin perception, planning, control and decision‐making in complex autonomous platforms. You will: Design, develop and implement robotics software components within a core ...

Software Engineer – UK Engineering Team A fast-growing technology company building the digital infrastructure for physical AI With offices across the US, Europe, and Asia, the UK team is based in London . About the Role As a Software Engineer on the UK Engineering team … successful candidate will help lead the design, development, and optimisation of high-performance software solutions — ensuring scalability, reliability, and maintainability. They will work closely with the US engineering team and cross-functional colleagues to translate requirements into robust technical solutions. Key Responsibilities: Leading design, development, and optimisation of high ...

Software Engineer London/Hybrid | Perm Role £60,000 - £80,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Their technology enables clients to access institutional-grade execution, automate manual workflows, and gain greater transparency across … product offering and deliver cutting-edge solutions that help clients manage risk more effectively. The Role This is an excellent opportunity for an experienced Software Engineer — ideally with a background in financial technology or FX — to join a high-performing engineering team within a scaling fintech. ...

Senior Software Engineer | Python | AI Systems | London | £120k to £160k + Equity Location: London hybrid Salary: £120k to £160k + meaningful equity Building AI systems is easy. Building AI systems that behave predictably in production is not. We are working with a well funded Series A startup tackling … environment where correctness, thoughtful design and long term system quality genuinely matter. If you enjoy solving difficult systems problems and building software that actually holds up in the real world, this is a rare opportunity. Tech stack Python (FastAPI, Django or Flask) - experience across Rust, Golang, C++ useful ...

Software Engineer/Developer (Java SpringBoot AWS) London/WFH to £90k Are you a Java technologist seeking a role where you can work on ground breaking technology, continually learning and progressing your career? You could be joining a global technology consultancy. As a Software Engineer ...

Role: C++ Software Engineer Salary: Up to £190k + Bonus Location: London (Hybrid) This firm is an elite company with high tech standards who have previously set tech world records. They are made up of some exceptionally talented individuals who above all are passionate about using the latest … Erlang), or purpose-built languages similar to OCaml • Building out low latency infrastructure and tweaking research models What else is in it for you? • Software Engineers are treated as the company's #1 asset • Low attrition rate; people working there love what they do on a daily basis! • Very ...

Java Software Engineer with around 3-6 years professional, post-graduate experience sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading … staff tenure. This hire will be part of a core Software Engineering team, responsible for the vast majority of all applications in the business from front-to-back office.This includes Order Management & Trading Execution, Risk & Finance, Straight-Through-Processing and Corporate Functions. The team deal directly with business users ...

portfolio managers. Owning projects end‐to‐end — from gathering requirements through to deployment. What you’ll need 5–6 years’ experience as a software engineer in financial services (buy‐side preferred, sell‐side also welcome). Solid background in treasury, collateral, middle‐office, or financial operations technology. Strong ...

rather than rewriting it, and being trusted to deliver without heavy supervision, this role will feel unusually well-matched. The role As Senior Fullstack Software Engineer, you will help design, build and maintain the production systems that power Outsmart’s platform. You’ll work closely with ...

environment where your work will directly shape the future of the platform and the company. About the Role We are looking for a Lead Software Engineer to take ownership of the development and evolution of the Spires platform. You will lead a small team of developers, helping … Qualifications Degree (2:1 or equivalent preferred) in Computer Science or related discipline Required Skills 5+ years experience as a Senior Full Stack or Software Developer 2+ years of proven management experience Strong experience with React and modern frontend development Backend development experience (Java preferred) Solid knowledge of JavaScript ...

Software Developer Key Technologies: C#, .NET, .NET Core, Azure, SQL London Perm Role | Hybrid Working Structure £75,000 - £95,000 Harrington Starr has partnered with a global Investment Bank who are looking to hire a seasoned Senior C# Developer with extensive experience developing Front Office trading systems. Key Responsibilities ...

Senior Product/Frontend Software Engineering Position Summary Total comp: £175k-£200k (inc. Equity) Hybrid working policy: Mandatory minimum three days a week in our Waterloo office Experience level: At least five years in commercial software engineering 🚀 About Orchestra Orchestra is an AI-native data pipelining platform building ...

/11, AWS, Pipeline, Financial domain, Spark. JD: Java Tech Lead job involves leading and mentoring a Java development team, analyzing and designing software solutions, ensuring adherence to best practices and coding standards, and collaborating with product managers and other stakeholders to deliver high-quality products for the financial … Oversee Java development projects from conception to completion, ensuring alignment with project requirements and timelines. • Technical Expertise: Design, develop, test, debug, implement, and maintain software applications using core Java technologies. • Quality Assurance: Ensure high-quality code through code reviews, adherence to coding standards, and implementation of best practices. • Collaboration ...

Senior C# Engineer | OMS Team | Elite Hedge Fund | London-Hybrid 6 month rolling FTC (Fixed Term Contract) A leading hedge fund is looking for a Senior C# Engineer to join their Order Management Systems (OMS) engineering team in London. This is a high impact, hands on individual contributor ...

Role: Lead Python Engineer (Hands-on Team Lead) 📍 Location: London – Hybrid (3 days office/2 days WFH) 💰 Salary: Up to130k base 🏦 Industry: Fintech Platform We’re working with a profitable, high-growth UK fintech building a platform used by wealth and advisory firms to manage investment accounts, portfolios … platform — both in terms of scale and functionality . As a result, they’re growing the engineering team and looking for a Lead Python Engineer to take ownership of a core part of the platform. The Role This is a hands-on technical leadership role (50-70% hands ...

Graduate Software Developer/Quantitative Developer/Quantitative Researcher 📍 Location: London (Hybrid) 💷 Compensation: Up to £200,000 + Bonus + Benefits 🏢 Client: Prestigious Buy-Side Firm 🚀 Kickstart Your Career in Technology & Quantitative Finance Just graduated and ready to launch your career at the intersection of technology, mathematics, and finance ...

• Job Title: Senior Back End Developer (Python/Go) • Salary Range: £100,000 – £120,000 + Bonus • Location: London | Hybrid (2–3 days office) This Senior Back End Developer role will shape a brand-new ...

applications that span all asset classes, underpin trading strategies, and impact hundreds of end users. They're looking for an excellent C# or Java Engineer (Codebase contains both languages), but also someone with AI, distributed systems and database exposure. Stack: C# or Java, Kubernetes, Kafka, React, LLMs The firm ...

key. There is strong end-to-end ownership and clear visibility across the full trading stack. They are looking for someone with a solid software engineering background and several years of experience (typically around 3–7). Experience with trading systems or DeFi is beneficial but not required. What ...