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Mark L.

Mark L.

C# .NET Developer

Hi, my name is Mark Luffred. I’m a native English-speaking, C# .NET software developer based in Fayetteville, NY. I have 20+ years of experience building enterprise and healthcare software, with deep expertise in clinical workflow automation, healthcare platform engineering, systems integration, legacy application modernization, and iOS application development. I help clients design, build, improve, and maintain secure, scalable web and mobile applications that reduce manual work, improve operational efficiency, and support long-term growth. My background includes full-stack .NET development, enterprise web application architecture, iOS app development, role-based access, auditability, data flow design, third-party integrations, and modernization of existing platforms for better performance and maintainability. I have provided software development and advanced technical support for organizations including Thomson Reuters, Sunovion Pharmaceuticals, Berkshire Hathaway, Dover Corporation, and more. I am fully equipped to develop enterprise-grade applications with professional tools including Visual Studio Enterprise, Xcode, and Telerik DevCraft controls. My office hours are 7am - 4pm ET Monday - Friday. --Mark Luffred

🇺🇸Fayetteville, United States$79/hr100% JSS5.00 (3)Since Jul 2015

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#8,186 / 412k
🇺🇸Country#2,243 / 62.1k
Revenue, last 30 days
—

Read daily since Oct 31, under 30 days

Total earnings
$291k
World#8,186 / 412k
🇺🇸Country#2,243 / 62.1k
Per project
$32k
Projects, last 6 months
0
World#209,850 / 412k
🇺🇸Country#27,405 / 62.1k
Projects in all
9
0% fixed100% hourly
World#212,268 / 412k
🇺🇸Country#30,262 / 62.1k

Earnings, last 30 days

$291kNothing earned since Oct 31Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$285k$290k$295k$300kOct 31Nov 4Nov 7

Tracked from Oct 31, 2026.

Skills