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Jonathan Martinez

@jonathanmartinez1

Senior .NET Software Engineer

Senior Software Engineer with 10+ years of experience in delivering full stack development and leading backend engineering. Highly specialized in C#/.NET technologies with focus on ASP.NET Core and JavaScript SPA frameworks (React, Angular). Proven track record in enhancing performance through microservices architecture and database optimization. Hands-on experience in developing and integrating robust ETL/EDI systems in healthcare projects. Passionate about cloud native solutions and AI implementations utilizing Microsoft Azure and AWS. Demonstrates expertise in DevOps best practices through CI/CD pipelines. Committed to effective communication and cross-functional collaboration, with a sharp focus on problem-solving.

Experience

Work history, roles, and key accomplishments

Lead Software Engineer

Catapult Systems

May 2022 - Apr 2025 (2 years 11 months)

Led a cross-functional team in delivering a full-stack application utilizing React/Next.js for frontend and ASP.NET Core MVC backend, leveraging Entity Framework Core and Azure SQL Database for data persistence.

Senior .NET Engineer

Corewell Health

Sep 2020 - Apr 2022 (1 year 7 months)

Developed a critical healthcare application using ASP.NET Core and Blazor Server, implementing HL7 FHIR standards for interoperability with Epic EHR system.
Built responsive patient portal interfaces using Angular 12 with TypeScript, integrating with RESTful Web APIs and ensuring compliance with HIPAA privacy regulations and healthcare data security standards.

Full Stack Engineer

Steelcase

Sep 2017 - Aug 2020 (2 years 11 months)

Developed enterprise furniture configuration applications using ASP.NET MVC 5 and jQuery, integrating with SAP ERP systems for real-time inventory management and order processing.
Built a responsive e-commerce platform using Angular 8 and ASP.NET Web API 2, implementing payment gateway integrations with Stripe and PayPal for B2B transactions.

Frontend Developer

MEC

Mar 2017 - Aug 2017 (5 months)

Led migration of legacy ASP.NET Web Forms system to modern ASP.NET MVC architecture.
Developed cross-platform desktop applications using WPF and Windows Forms with C#.
Optimized application performance through implementation of ASP.NET output caching, CSS/JavaScript bundling, and database query optimization.

ASP.NET Developer

MediSure Canada

Jun 2016 - Feb 2017 (8 months)

Developed healthcare insurance management systems using ASP.NET Web Forms and C#.
Created database-driven applications using ADO.NET and MS SQL Server 2014.
Built automated reporting systems using SQL Server Reporting Services (SSRS).

Junior Web Developer

NantHealth

Sep 2014 - Jun 2016 (1 year 9 months)

Developed healthcare data visualization applications using ASP.NET MVC 4 and JavaScript.
Implemented responsive web interfaces using Bootstrap 3 and jQuery.