Lead Software Engineer .NET

We are looking for a highly capable Senior C# / .NET Engineer to work directly with the company's Founders on high-impact client projects across multiple industries.

In this hands-on, individual contributor role, you will design scalable architectures, build clean APIs and cloud infrastructure , and take complete ownership of production systems. As a senior technical voice, you will also elevate engineering standards and mentor growing team members.

You will be joining a growing business, building technology that makes operational businesses more effective. Current work spans workforce management in aviation and engineering maintenance in transport. These are fascinating and complex domains where software meets physical operations. The primary platform is on Microsoft Azure , but working across a range of enterprise technologies depending on client needs.

Responsibilities:

· Mentor and coach other developers: set the bar for code quality and engineering practice, help them grow into harder problems, and take the technical lead where it makes sense

· Own technical direction and architecture across client projects: domain modelling, service boundaries, data flow design

· Design, build, and maintain REST APIs and backend services in C# on .NET (this is still a hands-on role)

· Build integrations with external systems: HR platforms, asset management tools, data warehouses, messaging systems

· Write and optimise SQL queries, design database schemas, and maintain data integrity

· Establish and uphold engineering standards: code review, testing, CI/CD, conventions

· Work with Azure services day-to-day: Functions, App Service, Service Bus, Blob Storage, Key Vault

· Contribute to hiring, onboarding, and the technical growth of the team

· Support production systems and own their reliability

Tech Stack Skills:

· Language: C# on .NET (primary, and what you’ll write every day)

· Frameworks: ASP.NET Core (Web API), Azure Functions (isolated worker)

· Database: SQL Server, accessed via Entity Framework Core and/or Dapper (you’ll write queries, design schemas, and optimise performance)

· Cloud: Microsoft Azure (Functions, App Service, Servic...