Programmer Jobs in Middlesex

Software Engineer – Execution / Trading SystemsLondon | Office-Based | PermanentA high-performing market maker is looking to hire a Software Engineer to join its core engineering team building the systems that power live trading across global electronic markets.This is a strong opportunity for an engineer who enjoys performance-critical systems, cl...

We are a small London startup with the ambition to change education with ML-powered tutoring. Our flagship product is a mobile application for teaching English to intermediate and advanced learners.We’re on the verge of solving one of the biggest challenges in education – making high-quality, personalised learning accessible to everyone. What was o...

Contract Senior Software Engineer (Java or Python) | Inside IR35Contract length: 6 months (with potential to extend)Location: LondonWorking Environment: On-siteYou will be joining a private equity firm as a senior software engineer, to work across the following responsibilities:Develop and support P&L, accounting, and returns-calculation applicatio...

🌍 Lead Python Developer – Climate Tech👥 Non-Profit | Major Philanthropic Backing | Real Engineering Problems📍 London (Hybrid, 2/3 days per week)🔧 Python, FastAPI, PostgreSQL, GCP, DockerI'm working with a fast-growing climate-tech non-profit tackling one of the most important infrastructure challenges in the energy transition. Backed by some of...

We are partnering with one of London’s most selective and highest-performing quantitative investment funds to appoint a Senior Quant Software Developer to their core systematic trading group. This is a confidential mandate for a team renowned for world-class engineering standards, scientific rigour, and a culture built around high impact and low eg...

Role type: 6 Months ContractRole Overview:We are looking for an experienced Senior AIS (Azure Integration Services) Developer to join a fast-paced enterprise technology environment supporting a modern SaaS-based ERP ecosystem.You will play a key role in designing, developing, and leading enterprise integrations across SAP Finance and multiple third...

We are supporting one of our client on a major Payments modernisation programme and we are looking to hire Lead Java Engineers to help design and build a new real-time event-driven platform.Note this role is a 12 months fixed term contract.Role OverviewYou will be part of a newly formed team modernising a legacy, on‑prem Payments application and mi...

About ARQARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challen...

Senior Java DeveloperLondon / HybridCapital Markets TechnologyA growing capital markets technology business is looking to hire a Senior Java Developer to play a key role in building and evolving a cloud-native post-trade platform used across client reporting, APIs, workflow management, and trading operations.This is a hands-on engineering role with...

Hybrid – London | Global FinTech InnovatorOur client is an established yet fast-growing FinTech specialising in high-performance market data analytics. Their platform ingests and processes terabytes of global trading data daily, powering decision-making for leading investment firms, exchanges, and research institutions.They’re now seeking a Market ...