Programmer Jobs in Old Street

GenAI Python DeveloperLocation: Hybrid / 2 days in LondonSalary: £60,000 - £75,000 + BenefitsNotice Period: Immediate to 2 Weeks PreferredWe're looking for an experienced GenAI Python Developer to join a high-profile programme delivering an enterprise-scale GenAI Virtual Agent capability for a global organisation.This is an opportunity to work at t...

ALGO / SMART ORDER ROUTING DEVELOPERLondon – Hybrid Java, Low Latency, SOR, EMS/OMS, Linux, AWSThe Company This is an unmissable opportunity for an experienced Algo Developer to join one of the leading institutional digital asset firms in the market. With a global footprint and a platform spanning trading, asset management, custody and tokenisation...

Python Developer | Front Office | Greenfield Energy Trading | London, Hybrid | £650/Day Inside IR35A Python Developer with strong core engineering skills is required by a leading Trading House institution to support the front office teams in the business. This Python Desk Developer will be working directly on the trading desk, embedded with traders...

Role: Senior Python EngineerClient: Financial SystemsSalary: Up To £130,000 P/A + CompsA high-performing global team is looking for an experienced Python Engineer to help build and enhance critical backend platforms supporting complex trading, risk and data workflows. This is a hands-on role focused on scalable engineering, large datasets and deliv...

We're currently partnering with a top-tier quantitative trading firm seeking exceptional C++ engineers to join a highly specialised low-latency team.This is an opportunity to work on systems where performance is measured in nanoseconds, not seconds.You'll be responsible for designing and optimising mission-critical trading infrastructure, building ...

🚀 Senior Backend Engineer – FinTechWe’re partnered with a fast-growing B2B FinTech building modern billing infrastructure for scaling companies.This is a small, high-calibre engineering team where backend engineers have genuine ownership across product, architecture, and platform decisions.What You’ll Be Working On 👇• Building end-to-end product ...

Start date: ASAP (Urgent!!)Location: London, UKOn site Requirement: 3 times per weekContract Inside IR35Software Development EngineerAbout the roleOurs is a globally distributed, full stack java tech team and our building blocks consist of a set of Microservice components, backend APIs, Rich UI, robust Eventing Platform and Data layer components ut...

We’re looking for a talented Azure Java & Python Engineer with 6-7+ years of experience to join our innovative team. You will be at the forefront of building scalable, resilient, and secure asset management solutions on Azure Cloud, working with the latest tools and practices.What you’ll do:Design, develop, and maintain client-facing applications &...

We’re partnering with a top-tier quantitative trading firm to hire an experienced C++ Software Engineer to work on performance-critical trading and market data systems.This is a role for engineers who care deeply about latency, determinism, and correctness, and who want to build systems where microseconds and design decisions genuinely matter.The R...

We’re partnering with a high-performance quantitative trading firm to hire a Front-End Engineer with deep React experience to work on the firm’s internal trading, research, and risk platforms.This is a front-end role for engineers who care about architecture, performance, and correctness, and who want to build interfaces used by traders and quantit...