William Z.

I'm a results-driven senior software engineer with 15+ years of experience delivering enterprise-grade full stack applications using C# / .NET Core and cloud technologies. I architect, build, and optimize backend systems, APIs, and microservices while ensuring frontends are fast, user-friendly, and scalable using Angular, React, or Next.js.

I’ve worked on large-scale, secure systems in healthcare, fintech, and logistics — including IL4 and HIPAA-compliant environments — and bring a proven track record of delivering business-critical solutions that scale. Clients trust me to translate complex needs into clean, maintainable architecture.
Core Strengths:

✔Backend & API: ASP.NET, .NET Core, .NET Framework Web API, Entity Framework, REST, GraphQL, WCF, Django, Laravel

✔Frontend: Angular, React, Next.js, Vue, TypeScript, Bootstrap, Tailwind CSS, jQuery

✔Architecture: Microservices, Event-Driven Systems, Clean Code, SOLID, DDD, CQRS, TDD

✔Cloud: Azure (Functions, App Services, Event Hub, API Management, Cosmos DB, Key Vault), AWS (EC2, RDS, Lambda, S3)

✔DevOps: Azure DevOps, GitHub Actions, Docker, Bicep, CI/CD, IaC, Pipelines

✔Security: OAuth2, Azure AD B2C, FusionAuth, OpenID Connect, TLS, SSO

✔Databases: SQL Server, Azure SQL, Snowflake, Cosmos DB, MongoDB, Oracle, PostgreSQL

✔Tools: Visual Studio, VS Code, Postman, Swagger, Application Insights, Dynatrace

Let’s build a system that doesn’t just work — it works beautifully, securely, and at scale.