About me

Mark
Application Developer

I have been privileged to work with fortune 500 companies developing unique sites and custom applications which include Hasbro, Virgin Mobile, Verizon Wireless, T-mobile and Mining Industry Companies. Working with great clients has enabled me to strengthen my talents and skills as well as my technical and creative expertise. I love what I do and in the end, I hope my work shows that.

My history

2019 - 2025 Application Developer - United Coal Company
  • Developed Custom Web Applications in C#, .NET CORE & .NET to streamline business processes.
  • Managed version control and collaboration using Git ensuring efficient teamwork and code integrity across projects
  • Developed APIs and libraries with Entity Framework Core, optimizing data access and improving response times.
  • Maintained large to small scale applications, ensuring consistent performance and reliability across environments.
  • Conducted comprehensive debugging, testing, and quality assurance, reducing software errors and ensuring high-quality delivery.
  • Supported and implemented features based on user requests, enhancing functionality and user satisfaction.
  • Followed full-stack development best practices, contributing to the complete software lifecycle, from design to deployment.
  • Designed branding materials and graphics to enchance company identity.
2005 - 2019 Application Developer - Exemplum
  • Built Web Applications with ASP.NET/C# on the Azure Platform maintaining speed and reliability.
  • Built Android applications using Java, Kotlin and Android Studio creating a mobile presence for clients.
  • Developed and managed SQL Server tables and stored procedures for a robust backend.
  • Designed client branding and graphics enhancing company image and marketing efforts.
  • Created eye catching and functional digital design concepts to strengthen company brand and identity.
  • Developed interactive applications for clients using Adobe Flash, HTML, and CSS. (Clients included Hasbro, Alienware, Verizon, AT&T, Virgin Mobile).
  • Utilized Adobe Photoshop for image editing and correction.

My Skills


  • C#
  • SQL
  • Java
  • Kotlin
  • JavaScript
  • SQL
  • PHP
  • Jquery
  • Angular
  • Bootstrap
  • NET
  • JSON