Resume

• Stabilized and enhanced a legacy Classic ASP / VBScript Quality Control web application supporting manufacturing operations, fixing defects in serial-number generation logic, admin access control, and data-import tooling critical to QC throughput.
• Diagnosed and resolved production issues across the full stack — stored procedures, IIS configuration, database connectivity, and SQL Server restores — improving reliability of manufacturing and QC workflows.
• Authored migration assessments and risk analyses for modernizing the legacy Classic ASP codebase to ASP.NET Core 10, identifying technical debt, dependencies, and phased migration paths; published findings and approach at zakrevskyi.dev/blog/classic-asp-to-aspnet-core.
• Re-wrote the Classic ASP quality-control application as a production-ready ASP.NET Core 10 MVC system in two weeks, covering database redesign, a Tailwind CSS design system, Windows SSO, time-zone and localization handling, and an offline-capable PWA (see Projects).
• Accelerated delivery with AI-assisted development (Claude Code, OpenAI Codex), codifying architecture, SQL, and UI conventions as agent skills for code generation, testing, and reviews; wrote about it in From Months to Two Weeks.

• Analyzed requirements with BAs/PMs, designed solutions, and participated in Agile/Scrum activities.
• Developed front- and back-end functionality for enterprise web applications using C#/ASP.NET Core (Razor/MVC), JavaScript/React, integrated EF Core/Dapper data layers on SQL Server, implemented Identity and JWT for secure REST APIs.
• Worked in Enodia, a large multi-tenant ASP.NET Core MVC logistics SaaS platform spanning 35+ functional areas, with tenant isolation, per-client configuration, and SAML2/JWT authentication.
• Worked daily with SQL Server databases of 500+ tables and 2,000+ stored procedures; designed and tuned stored procedures, paged/filtered queries, and schema changes consumed through a Dapper repository layer.
• Delivered client-specific features, integrations, and production support for enterprise customers including Sony, Panasonic, Hawk-Eye, Estée Lauder, and Kubota.
• Upgraded client applications from .NET 5/7 to .NET 9/10 across a large layered enterprise solution.
• Led migration of legacy ASP.NET applications to ASP.NET Core (.NET Framework to .NET Core).
• Implemented background jobs with Hosted Services and Quartz.NET; automated SFTP, SAP IDoc, and EDI 214 file-processing workflows.
• Optimized SQL Server performance via query tuning, indexing, Dapper, and stored procedures.
• Applied IoC/DI, async patterns, interfaces, and clean architecture to improve maintainability and testability.
• Delivered via CI/CD (Azure DevOps, GitHub Actions); created branches, opened PRs, and resolved merge conflicts.
• Followed coding standards, conducted code reviews, and wrote unit/integration tests (xUnit/NUnit).
• Communicated status and risks to senior developers/PMs, and provided production support.

Relevant coursework: Web Development, Cloud Computing, Database Systems, Software Architecture, Agile Methodologies.