Harrington Starr - IT - Software Development

Senior C# Developer needed to lead transformation of client onboarding platforms for a top global financial firm in New York. Leverage 10+ years of C#/.NET expertise, AWS microservices, Docker, and CI/CD to build scalable, cloud-native solutions. Enjoy a competitive base salary plus performance b...

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 ...

Senior Software Engineer sought to design and scale critical payment infrastructure for a leading global fintech. You will build high-volume, multi-currency transaction systems using distributed systems and APIs. This role demands deep backend expertise in fintech or banking, with a focus on clea...

Backend Python Developer needed for a London-based energy trading firm to build and enhance a modern, AWS-powered post-trade platform. This contract role focuses on backend development for live intraday trading, position management, and P&L reporting. You will design scalable services, build APIs...

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 ...

Senior Software Engineer sought by a fast-scaling London fintech transforming FX and treasury operations. You will build high-impact, cloud-native trading systems using C#/.NET, SQL, and microservices. Ideal for engineers with 5+ years’ experience in financial technology. Join a collaborative tea...

Customer Success Manager sought for a Financial Services SaaS platform in London/Hybrid. This new role builds a CS function, driving platform adoption and value for fund managers. You will own senior client relationships, identify upsell opportunities, and shape best practices. Offering £75k-£100...

Seeking a skilled **Software Engineer** with expertise in **NodeJS** and **TypeScript** for a London-based role. You will build robust trading systems within a Front Office environment, leveraging **AWS Cloud** and **Terraform**. Requires a 2:1 in Computer Science and experience with **React** an...