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Yevhen Z.
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Yevhen Z.

Full-stack Software Engineer | Node.js, React, AWS

I'm a backend-focused full-stack engineer with 10 years in IT, with TypeScript and Node.js as my primary tool and the central tech focus of my career. For the past 5 years, I’ve served as a Lead Node.js Engineer at a US-based healthcare company that builds discharge management software, specializing in healthcare interoperability, EHR/EMR integrations, and backend systems. I co-led the platform's complete redesign and rebuild, expanding its functionality and migrating it to a cloud-native Node.js architecture; consider this experience my magnum opus because of the scale of the effort, its architectural complexity, the stringent security and maintainability standards typical of healthcare software, and the fact that it’s actively used in production by enterprise-level organizations. I’m well-equipped to help healthcare technology companies deliver HIPAA-compliant, production-grade software with complex healthcare workflows, seamless Epic & Cerner integrations, payer platform integrations, CMS- and other-origin medical data collection, HL7 & FHIR data interoperability, and more. It’s a niche area of engineering with many nuances to be aware of and a high cost of mistakes. I’m proud to be proficient in this domain and ready to take on those challenges. If you're building a healthcare platform or need help connecting healthcare systems, I'd be happy to discuss your project.

🇺🇦Kyiv, Ukraine$60/hr100% JSS5.00 (11)Since Jul 2019

Earnings and projects

MRR
$1.2k

Last 6 months ÷ 6

World#41,037 / 412k
🇺🇦Country#1,897 / 14.3k
Revenue, last 30 days
$0

Last 6 months: $7.1k

Total earnings
$101k

Billed in all: $103k

World#38,943 / 412k
🇺🇦Country#2,607 / 14.3k
Per project
$9.1k

$7.1k in the last 6 months

World#17,804 / 412k
🇺🇦Country#1,241 / 14.3k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇺🇦Country#4,718 / 14.3k
Projects in all
11

Across 12 contracts

33% fixed67% hourly
World#192,417 / 412k
🇺🇦Country#7,811 / 14.3k

Earnings, last 30 days

$103kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$100k$102k$104k$106kOct 8Oct 23Nov 7

Skill rankings: Top 11% in JavaScript

Ranked by MRR among everyone on Upwork with the skill.

  1. #18Healthcare Interoperability99 freelancers · 🇺🇦 #1Top 18%
  2. #26Epic Systems Medical Software156 freelancers · 🇺🇦 #2Top 17%
  3. #51FHIR182 freelancers · 🇺🇦 #5Top 28%
  4. #89Healthcare Software394 freelancers · 🇺🇦 #8Top 23%
  5. #431NestJS3,757 freelancers · 🇺🇦 #62Top 11%
  6. #555Back-End Development4,183 freelancers · 🇺🇦 #57Top 13%
  7. #908API Development6,848 freelancers · 🇺🇦 #55Top 13%
  8. #955AI App Development4,708 freelancers · 🇺🇦 #56Top 20%