> Markdown version of [/jobs/ext/2241695-software-engineer](https://www.wearedevelopers.com/jobs/ext/2241695-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Software Engineer

- **Company:** Harrington Starr
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Amazon Web Services, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Systems Development Life Cycle, Working Model 2D, Production Code, Service Stack, Microservices
- **Published:** August 26, 2026
- **Apply:** https://www.collegerecruiter.com/job/2815189630-software-engineer

## About the Role

* 5+ years' experience working with C#/.NET
 * Experience developing front and middle office systems
 * Experience with cloud-native solutions (Azure or AWS)
 * Knowledge of event-driven, microservices architectures
 * Full SDLC experience - from design through delivery and support
 * 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

## Description

Overview

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
 * Experience with cloud-native solutions (Azure or AWS)
 * Knowledge of event-driven, microservices architectures
 * Full SDLC experience - from design through delivery and support
 * 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


## Related Videos

- [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment)
- [Introducing a Digital Service Catalog for speed and scale](https://www.wearedevelopers.com/videos/763-introducing-a-digital-service-catalog-for-speed-and-scale)
- [Microservices: how to get started with Spring Boot and Kubernetes](https://www.wearedevelopers.com/videos/242-microservices-how-to-get-started-with-spring-boot-and-kubernetes)
- [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net)
- [Building high performance and scalable architectures for enterprises](https://www.wearedevelopers.com/videos/19-building-high-performance-and-scalable-architectures-for-enterprises)
- [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company)

## Related Articles

- [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)
- [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025)
- [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)
- [Software Engineer Salary in The UK](https://www.wearedevelopers.com/magazine/231-software-engineer-salary-in-the-uk)