Harrington Starr - IT - Software Development, On-site work

Join a leading global alternative investment manager as a **Software Engineer** in **London**, building mission-critical systems for trading, risk, and pricing. You’ll leverage **C#**, **.NET**, and **SQL** to design scalable solutions in a collaborative, technology-driven environment. This role ...

Join a leading quantitative trading firm in London as a Quantitative Researcher. You will develop systematic trading and market-making strategies, leveraging Python and statistical modelling on large datasets. Ideal for candidates with an advanced degree in a quantitative field and experience in ...

Principal C++ Engineer sought for a front-office options desk in London, building a brand-new trading stack. You will leverage deep C++ and Linux expertise, including multi-threaded programming, to design and implement bespoke automated trading software. This role demands strong engineering princ...

Join a London-based Digital Currency Investment Platform as a **Software Engineer** specializing in **NodeJS** and **TypeScript**. You'll build cutting-edge web systems for global digital markets, leveraging **AWS** and **Terraform**. Ideal for engineers with a Computer Science degree and experie...

Senior Quant Analyst sought by a leading competitive gaming firm in Milton Keynes, UK. You will develop and maintain advanced sports betting pricing models and algorithms for esports, leveraging Python, R, or Java. Requires 5+ years of quant experience in sports betting and expertise in machine l...

Senior C# Engineer sought by a London-based proprietary trading firm to drive greenfield projects using cutting-edge .NET technology. You will architect high-performance trading applications, collaborating with top engineers in a non-corporate culture. Requires deep C# expertise, SQL Server knowl...

Seeking a Security Engineer in Sydney to join a specialist APAC team within a global organisation. You will safeguard cloud and on-prem environments, leveraging expertise in Microsoft 365, Entra ID, and automation via Python/PowerShell. Ideal candidates bring 5+ years in information security, pro...

Join a London-based Digital Currency Investment Platform as a **Software Engineer** specializing in **NodeJS** and **TypeScript**. You'll develop cutting-edge global web systems, playing a pivotal role in the full SDLC. Key requirements include expertise in **JavaScript**, **TypeScript**, **AWS**...

Network Engineer sought by a market-leading betting firm in Gibraltar. You will manage complex network infrastructure, requiring expertise in Cisco, Arista, Palo Alto, OSPF, and BGP. Automation skills with Terraform, Ansible, and Python are essential. This role offers a relocation package for the...

Lead product development for a global mobile investing app in London. Own key features, define requirements, and deliver rapid MVPs with international engineering teams. Ideal candidates have mobile app PM experience, a commercial mindset, and a background in Crypto, Trading, or FinTech.

Join a global fintech leader in Poplar, London, as a Cyber Security Engineer. You will focus on AWS security, designing controls and managing tools like GuardDuty and Security Hub. This role offers cutting-edge projects within a major cybersecurity investment program. Strong AWS, IAM, and CSPM ex...

Join a top-tier DeFi team in London building advanced onchain trading infrastructure. We seek a quant-minded Rust Engineer with a strong academic background and 2+ years of Rust/Solidity experience. You will design low-latency systems, optimize execution engines, and shape real-time DeFi strategi...