Platform architecture for serious .NET teams

The .NET partner for teams that want to ship faster without accumulating technical debt.

Posseth Software designs platform architecture, strengthens existing codebases, and builds security-first web software in .NET 10 and C# 14. More than 28 years of experience in production systems that must perform under real pressure. From sharp architecture choices and refactoring to concrete, maintainable implementation without technical debt.

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Architecture Platform decisions that hold up as teams and complexity grow.

Performance Faster software through sharper choices in stack, rendering, and data flow.

Security Security-first defaults in headers, deployment, and browser behavior.

Delivery From technical analysis to production-ready implementation. No slide decks — only working code in production.

Hardening Security headers, strict nonce-driven CSP and browser policy as part of the design. A+ is the baseline, not an option.

Engineering Pragmatic choices with 28+ years of .NET experience. No consultancy theater, no over-engineering, no technical noise.

Capabilities

Where Posseth Software adds immediate technical value

Platform architecture

Architecture for .NET systems that remain understandable and maintainable as teams, features and integrations accelerate. Refactoring that reduces technical debt instead of moving it around.

Security-first web engineering

Strict defaults for headers, nonce-driven CSP, transport security and frontend discipline. Razor Pages without jQuery, no unsafe-inline, no CSP exceptions. A+ security headers as the standard.

Developer tooling

Open source libraries and building blocks that encourage reuse. SafeWebCore for security, SharpCoreDB for high-performance embedded storage. Code that helps teams ship faster and more consistently without messy abstractions.

Selected work

Featured projects that make engineering decisions visible

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Open source libraries and platform components built to the same standards as client work. Architecture, security and performance are not an afterthought.

Project

SafeWebCore

Security headers middleware for ASP.NET Core with strict A+ baseline and nonce-driven CSP.

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Project

SharpCoreDB

High-performance embedded database for .NET 10 with SQL, encryption, and file-based storage.