About Sinnard Technologies

I’m Justin Sinnard, an indie developer who builds real, production-ready apps from the ground up. I’ve shipped cross-platform apps, designed .NET backends, and handled everything from auth and data sync to in-app purchases and analytics.

What I Bring

• Mobile: iOS with SwiftUI, Android with Jetpack Compose
• Backend: .NET / C#, Entity Framework, SQL, Azure
• Architecture: token-based auth, multi-environment setups, error logging
• Product mindset: I’m also a product owner (PumpPal), not just a coder

Whether you need a small internal tool, a full public app, or help rescuing an existing project, I can step in as a hands-on builder and partner.