Fermin C. Fruylan
Summary
Versatile developer with two decades of full-stack experience delivering end-to-end applications across government, healthcare, blockchain, AI, real estate, finance, and sports. I build cohesive UI-to-database solutions with .NET and React, shipping reliable, scalable products in cloud and on-premises environments that teams can maintain and extend with confidence.
Core Skills
Languages: C#, VB.NET, T-SQL, JavaScript, TypeScript, Solidity
Backend: .NET Core, ASP.NET Core Web API, ASP.NET Minimal API, Node.js, NestJS
Cloud: Azure App Service, API Management, Logic Apps, Key Vault, Azure SQL, Azure Monitor
DevOps: Azure DevOps Pipelines, Docker, Git, CI/CD
Frontend: React, Redux, ASP.NET MVC/Razor, Bootstrap, jQuery, HTML/CSS
Data: SQL Server, Azure SQL Database, CosmosDB, MongoDB
Architecture: Clean Architecture, DDD, CQRS, Slice Architecture, Dependency Injection
Experience
Software Developer — Diaspark Inc. (2022–Present)
Senior Software Developer — Geodata Solutions Inc. (2020–2022)
- Delivered HealthKard EHR end-to-end with Razor Pages/jQuery UI, ASP.NET Core REST APIs, and Entity Framework data models on Azure
- Built VacConnect dashboard and registration flows using React/Redux front end, ASP.NET Core APIs, and Dapper with SQL Server
- Implemented Azure DevOps CI/CD pipelines deploying full-stack applications to App Service, API Management, and container registry
- Connected Ethereum smart contracts to backend services via Nethereum, bridging on-chain data with API and application workflows
- Added xUnit test coverage across controllers, services, and API layers to strengthen full-stack release quality
Full Stack Software Developer — Rapid Signal Electronic (2015–2019)
- Built ERP modules across ASP.NET MVC/Bootstrap/jQuery UI, C# business logic, Entity Framework, and SQL Server
- Designed database entities and SSRS/Crystal Reports outputs integrated with MVC views and operational workflows
- Standardized TFS and Azure DevOps CI/CD for end-to-end releases from source control to cloud-hosted deployment
- Developed geospatial map-overlay features linking digitized maps, SQL data queries, and MVC front-end visualization
Senior Software Developer / Software Developer — Geodata Solutions Inc. (2006–2015)
- Led full-stack hospital system delivery with ASP.NET Web Forms/jQuery UI, VB.NET services, and MS SQL Server stored procedures
- Built code-generation tooling that scaffolded CRUD UI, DTOs, services, handlers, and SQL stored procedures as one workflow
- Implemented HL7, DICOM, PACS, and ICD-10 integrations connecting external systems to application UI and database layers
- Deployed property tax platform to 7 client sites with WinForms UI, SQL Server backend, and Crystal Reports outputs
- Refactored high-volume T-SQL stored procedures powering billing, assessment, and collection screens across the stack
Projects
HealthKard EHR — Cloud EHR with blockchain integration • .NET Core, Azure, Solidity, Nethereum
VacConnect — COVID-19 vaccination registration and scheduling platform • React, Redux, ASP.NET Core, Dapper, Docker
Rapid ERP — Multi-industry ERP platform • ASP.NET MVC, SQL Server, SSRS, Crystal Reports
Diana HIS — Hospital information system (EMR, billing, diagnostics, claims) • .NET, SQL Server, HL7, DICOM, PACS
Education
Bachelor of Science in Computer Science • Notre Dame of Marbel University • 2005