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Oleksandr S.
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Oleksandr S.

Full-Stack Developer (Frontend-Focused) | React, React Native, NestJS

I am a Full-Stack Developer with over 4 years of experience in building production web and mobile applications, primarily in startup environments. My expertise lies in React and React Native, enabling me to create seamless cross-platform solutions. I thrive on turning concepts into functional products, guiding projects from MVP to full production. My skill set includes robust backend knowledge with Node.js and Express, alongside experience with REST APIs and GraphQL. I am proficient in integrating OpenAI APIs, OCR processing, and developing AI-assisted scoring systems. With familiarity in CI/CD pipelines and cloud technologies, I ensure efficient deployment and scalability. I am eager to collaborate on projects that challenge my abilities and push the boundaries of innovation. If you're looking for a developer capable of delivering high-quality results with a focus on user experience, let's connect and explore how I can contribute to your success.

🇺🇦Lviv, Ukraine$30/hr90% JSSSince Mar 2026

Earnings and projects

MRR
$4k

Last 6 months ÷ 6

World#7,971 / 412k
🇺🇦Country#536 / 14.3k
Revenue, last 30 days
$4.8k

Last 6 months: $24k

World#6,029 / 412k
🇺🇦Country#408 / 14.3k
Total earnings
$31k

Billed in all: $31k

World#108,184 / 412k
🇺🇦Country#5,709 / 14.3k
Per project
$31k

$24k in the last 6 months

World#2,691 / 412k
🇺🇦Country#249 / 14.3k
Projects, last 6 months
1
100% fixed0% hourly
World#128,092 / 412k
🇺🇦Country#4,718 / 14.3k
Projects in all
1
100% fixed0% hourly
World#360,671 / 412k
🇺🇦Country#13,083 / 14.3k

Earnings, last 30 days

$31k+$4.8k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$25.0k$27.5k$30.0k$32.5kOct 8Oct 23Nov 7

Skill rankings: Top 3% in Web Development

Ranked by MRR among everyone on Upwork with the skill.

  1. #4Native App125 freelancers · 🇺🇦 #1Top 3%
  2. #9NestJS Development248 freelancers · 🇺🇦 #2Top 4%
  3. #33Native App Development833 freelancers · 🇺🇦 #7Top 4%
  4. #105App Development2,592 freelancers · 🇺🇦 #17Top 4%
  5. #125NestJS3,757 freelancers · 🇺🇦 #22Top 3%
  6. #127Mobile App3,535 freelancers · 🇺🇦 #22Top 4%
  7. #221Android App Development6,395 freelancers · 🇺🇦 #26Top 3%
  8. #324Web Application9,341 freelancers · 🇺🇦 #48Top 3%