Software Engineer

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 their financial processes. Handling billions in transactions each year, they continue to expand their 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. You’ll be instrumental in developing and enhancing the company’s core trading and treasury systems, building new features, improving performance, and driving integration across their technology stack. Key Responsibilities Develop and maintain software across the full stack Contribute to architecture and design decisions Support, optimise, and maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ years’ experience working with C#/.NET Experience developing front and middle office systems Strong SQL skills Experience with cloud-native solutions (Azure or AWS) Knowledge of event-driven, microservices architectures Full SDLC experience — from design through delivery and support Key Benefits Join a fast-scaling fintech building next-generation financial technology Work on complex, high-impact systems handling large-scale transactions Collaborative, innovative, and growth-oriented team culture Hybrid working model with flexibility and autonomy Please apply via the link provided or reach out to me directly to book in a confidential phone call - [email protected]