Senior Software Engineer

About this role

Senior Software Engineer - .NET Core, Blazor, SQL Server |
United Kingdom
| Remote | £50,000 - £60,000
Join a highly impactful, tech-driven not-for-profit organisation tackling one of the world's most pressing health challenges. As a Senior Software Engineer, you'll evolve and scale their bespoke platform, powered by cutting-edge .NET Core, Blazor, and SQL Server technologies, making a global impact by distributing tens of millions of life-saving resources annually.


The Role

• Develop and maintain robust internal and external systems using .NET Core, Blazor, and SQL Server
• Design secure, scalable, and efficient relational databases
• Take ownership of projects from analysis to deployment, collaborating with an agile team on tech and process improvements
• Contribute to architecture, UX, and security decision-making, occasionally mentoring junior developers

What You'll Need

• 5+ years of experience with .NET Core, C#, SQL Server
• Proficiency with Blazor, Razor Pages, and EF Core
• Strong front-end skills including HTML, CSS, JavaScript/jQuery, and responsive design
• Solid understanding of web security, application architecture, database design, and Git for modern deployment workflows

What's On Offer

• Work with purpose – your code directly supports millions of people worldwide
• Join a focused, collaborative, and mission-driven remote-first team
• Fully remote (UK-based) with flexible working arrangements
• Competitive salary of £50,000 - £60,000, company pension, and 25 days holiday + bank holidays

Apply via Haystack today!