Senior .NET Engineer | £90-110K | Hybrid 3 days in London | Fintech Client
A leading FinTech business based in Central London is looking to hire multiple Senior .NET Engineers to join a major transformation programme focused on modernising one of its core technology platforms.
You will join as one of the first senior engineers in a growing development team, helping to shape the technical direction of a new platform from an early stage. The role will involve modernising and migrating an existing system onto a new greenfield solution, with plenty of opportunity to influence architecture, engineering standards and development practices.
This is a hands‑on senior engineering position, with a core technology stack including C#, .NET, Azure and Event-Driven Architecture .
Salary & Location:
- Salary up to £110,000 + bonus + benefits
- Based in Central London
- Hybrid working with 3 days per week in the office
Key Responsibilities:
- Design and develop high-performance backend and integration services using C# and .NET , supporting systems processing very large volumes of data at terabyte scale .
- Build scalable, resilient and highly performant applications capable of operating within demanding, data-intensive environments.
- Develop and maintain APIs, event-driven services and distributed applications connecting internal platforms and services across the wider technology estate.
- Work with event-driven and messaging architectures to process and distribute high volumes of data efficiently and reliably.
- Design solutions with a strong focus on performance, throughput and latency , making appropriate architectural and engineering trade-offs for performance-sensitive systems.
- Develop applications within a distributed private-cloud environment , where infrastructure is hosted across geographically distributed, internally managed machines rather than a traditional public-cloud model.
- Build and deploy containerised services , working within an environment where lightweight container orchestration and performance are prioritised over traditional Kubernetes-based deployments.
- Apply strong software engineering principles around multithreading, concurrency, scalability, resilience and distributed systems where appropriate.
- Follow established practices around automated testing, CI/CD, Git-based development and observability to deliver reliable production software.
- Collaborate closely with Architects and Engineers to help define the architecture and technical direction of the new platform.
- Produce and maintain clear technical, service and process documentation .
- Mentor and support other engineers, promoting strong development practices across .NET, distributed systems and event-driven architecture .
- Ensure solutions meet required security, governance, compliance and supportability standards .
Experience working within high-volume data environments, distributed systems, private cloud infrastructure or performance-sensitive platforms would be particularly advantageous.
Senior .NET Engineer | £90-110K | Hybrid 3 days in London | Fintech employer: Auro Recruitment Group
Join a leading Fintech client in Central London, where innovation meets opportunity. As a Senior Software Engineer, you'll be at the forefront of transforming core systems, working in a collaborative and dynamic environment that values your expertise and encourages professional growth. With a competitive salary, hybrid working model, and a culture that fosters mentorship and knowledge sharing, this is an exceptional place to advance your career while making a meaningful impact.
