Yogi Grantz
Valencia,USA
Summary
Senior Software Engineer with 20+ years of experience building scalable, real-time, full-stack web applications in .NET /.NET Core and JavaScript/TypeScript. Expert in modernizing legacy systems, designing maintainable architectures, and delivering end-to-end solutions—from SQL Server and APIs to Blazor/Angular frontends. Proven track record in independent development, cloud-ready deployments, and creation of reusable component libraries, including 11 published NuGet packages with more than 35,000 downloads supporting the open-source community.
Overview
30
30
years of professional experience
Work History
Principal Software Developer
Creative Circle
03.2019 - Current
- Architected and delivered a real-time Blazor Server platform using SignalR, enabling dashboards, multi-user collaboration, and internal tooling that improved cross-team visibility and code quality.
- Took ownership of a vendor-built C# WebAPI platform, stabilizing the system and delivering high-impact recruiter- and client-facing features.
- Integrated third-party services (ADP, DocuSign, Microsoft Graph, others) into business-critical applications, meeting evolving operational and compliance requirements.
- Accelerated platform adoption by building proof-of-concept applications, shared libraries, and onboarding resources that drove standardization across teams.
- Modernized legacy codebases by replacing deprecated libraries (System.Data.SqlClient, System.Net.Mail) with modern, supported alternatives (Microsoft.Data.SqlClient, MailKit, Microsoft Graph).
- Mentored engineers across experience levels, promoting modern C# practices, testing discipline, and maintainable architectural patterns.
- Contributed to Microsoft’s open-source logging provider, adding support for custom blob storage structures and integrating the enhancements into production infrastructure.
- Following a pause in internal C# development, was reassigned to a client engagement delivering priority enhancements and defect fixes on a legacy Node.js + AngularJS (1.x) enterprise platform.
Senior Software Developer
Entertainment Partners
10.2017 - 02.2019
- Joined to address a significant backlog of feature and bug-fix requests for Smart Accounting, a core WinForms product used across the entertainment industry.
- Worked within a large, mature .NET 4.7 codebase integrated with microservices and SQL Server.
- Took lead on completing the majority of outstanding requests, stabilizing the application for critical business use.
- Role concluded following company acquisition and the successful mitigation of the backlog.
Principal Software Developer
Creative Circle
02.2017 - 10.2017
- Built and maintained company-wide class libraries, enforcing SOLID and DRY principles to replace a legacy copy-paste culture.
- Developed a configuration-driven WebAPI layer that reads stored procedure key names and parameters from JSON payloads, enabling dynamic SP execution without hardcoded logic.
Lead Software Developer
ICDC College / ZipEdTech
09.2012 - 12.2016
- Designed and developed eight internal business applications and one public-facing educational portal, which remains operational and stable without ongoing maintenance.
- Delivered robust, maintainable solutions using C# .NET MVC, ASP.NET, Entity Framework, WCF / Web Service, and SQL Server.
- Worked closely with stakeholders to gather requirements, deliver features iteratively, and maintain high code quality standards.
Senior Software Consultant
RB Zack
05.2012 - 08.2012
- Mitigated backlog requests for client software - Precious Metal winform vb.net application.
- Authored code fixes and enhancements for inclusion in future code releases and patches.
Senior Programmer Analyst
San Diego County Office of Education
08.2002 - 05.2012
- Contributed to enterprise-scale Student Information and Financial Information Systems used countywide.
- Supported mission-critical applications for Accounts Receivable, Requisition Management (via County Auditor), and other fiscal modules.
- Developed solutions using a hybrid stack of COBOL, COMTI, Classic ASP, VB.NET, and C#.NET.
- Developed a code generation system to streamline the creation of new modules that interface with mainframe screen data (non-web UI), including automated generation of ADO-based data access layers.
- Played a key role in the modernization of legacy systems through .NET-based enhancements and structured data flow.
Programmer Analyst Consultant
State Of Ohio
07.1996 - 07.2002
- Developed and maintained COBOL applications supporting the Child Support Enforcement program across Ohio.
- Worked within a mainframe environment to deliver reliable, large-scale systems for case tracking, reporting.
Education
Master of Science - Industrial Engineering
Mississippi State University
Starkville, MSMaster of Science - Aerospace Engineering
Mississippi State University
Starkville, MSBachelor of Science - Aerospace Engineering
Mississippi State University
Starkville, MSSkills
- System Architecture
- Scalable Platform Development
- Clean Code Principles (SOLID, DRY)
- Mentorship / Code Standards
- Legacy Modernization
- Cross-Team Collaboration
- C#
- Net 8 / Legacy
- EF Core / Entity Framework
- ADOnet
- MudBlazor / Blazor
- SQL
- WebAPI
- MVC / Razor
- IoC Container / Dependency Injection
- JSInterop, ChartJS, TinyMCE
- AJAX / JQuery
- Angular / Typescript
- CSS / HTML
- BitBucket / Azure Devops / TFS
Timeline
Principal Software Developer
Creative Circle
03.2019 - Current
Senior Software Developer
Entertainment Partners
10.2017 - 02.2019
Principal Software Developer
Creative Circle
02.2017 - 10.2017
Lead Software Developer
ICDC College / ZipEdTech
09.2012 - 12.2016
Senior Software Consultant
RB Zack
05.2012 - 08.2012
Senior Programmer Analyst
San Diego County Office of Education
08.2002 - 05.2012
Programmer Analyst Consultant
State Of Ohio
07.1996 - 07.2002
Master of Science - Aerospace Engineering
Mississippi State University
Bachelor of Science - Aerospace Engineering
Mississippi State University
Master of Science - Industrial Engineering
Mississippi State University