Software Engineer, Scaling, SaaS, .Net, C#.

Software Engineer, C#, .NET, Scaling, SaaS

My client, a fast‑growing SaaS business transforming digital identity and workforce access for frontline organisations, is expanding their engineering team. They are building the next generation of Connect, a platform that simplifies onboarding, provisioning, and secure access at scale.

This is an opportunity to play a key role in shaping the engine behind a product used by thousands of frontline employees. If you enjoy building secure, scalable backend systems and collaborating in a high‑trust engineering culture, this is an excellent fit.

The Role

As a Software Engineer, you'll join a multidisciplinary squad spanning engineering, product, and architecture. You'll take ownership across design, development, delivery, and continuous improvement.

You will:

• Develop and maintain backend services, APIs, and integrations powering the Connect platform
• Write clean, robust, and testable C# code that performs at scale
• Contribute to architectural design alongside senior engineers and architects
• Work closely with front‑end devs, QA, and product teams to deliver end‑to‑end features
• Build with performance, security, and reliability at the core
• Create and maintain automated unit and integration tests within CI/CD pipelines
• Participate in technical planning, estimation, and documentation
• Champion continuous improvement of engineering standards and processes

What You'll Bring

• Strong commercial experience with C# and the .NET ecosystem
• Proven experience building scalable, secure systems in Azure (Service Fabric, Cosmos DB, Azure Functions, etc.)
• Solid understanding of modern backend architecture: microservices, APIs, messaging patterns
• Familiarity with CI/CD, automated testing, and DevOps practices
• Experience troubleshooting production issues in live environments
• Excellent communication and a collaborative mindset
• Bonus: experience with identity systems (Microsoft Entra ID/Azure AD), SSO, or HRIS integrations

Tech Stack

• Frontend: React, JavaScript
• Backend: C#, .NET, Azure Service Fabric, Kubernetes
• Infrastructure: Azure, Service Fabric, Cosmos DB

Why Join My Client?

• Be part of a product transforming how the frontline workforce connects
• Influence the technical foundations of a high‑growth SaaS platform
• Work with a talented, frowing team backed by strong investment
• Hybrid working: London office + flexibility to work from home
• 29 days holiday (including birthday off) + bank holidays
• Office shutdown over Christmas
• Generous private medical through Vitality
• Enhanced Maternity, Paternity, Adoption & Parental leave

We Are Aspire Ltd are a Disability Confident Committed employer