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Stas B.
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Stas B.

MVP Architect & Lead Developer | React, Native, Node & Firebase

I help founders turn concepts into funded, scalable products. Most recently, I architected and built a B2B startup from scratch and scaled to 300+ restaurant locations (30k+ users). How I work: I am a technical partner, not just a freelancer. On that B2B project, I personally wrote over 50% of the functionality while simultaneously managing a remote team of up to 7 developers. I know how to balance writing clean, scalable code with the leadership needed to move a project forward. Why MVP-stage founders hire me: Zero-to-One Specialist: I have successfully built 3 MVPs from the ground up. Firebase Architecture: With 40+ Firebase projects delivered, I specialize in serverless backends. I am an expert in complex Cloud Functions, Realtime Database, and securing your app with robust Auth & Rules. Product Mindset: I don't just execute tickets; I look for potential issues in your user flow and architecture before they become expensive problems. My Tech Stack: Frontend: React.js, React Native (iOS/Android), Modern State Management (Context/Hooks). Backend: Node.js, Firebase (Realtime DB, Cloud Functions, Hosting). Strategy: System Architecture, MVP Roadmap, Agile Leadership. Availability: I am currently open to new opportunities. Whether you need a Lead Developer to build your MVP from scratch or an Architect to scale your existing product, I am ready to jump in.

🇺🇦Lviv, Ukraine$90/hr100% JSS4.72 (29)Since Jan 2016

Earnings and projects

MRR
$6.3k

Last 6 months ÷ 6

World#3,491 / 412k
🇺🇦Country#226 / 14.3k
Revenue, last 30 days
$5.8k

Last 6 months: $38k

World#4,287 / 412k
🇺🇦Country#290 / 14.3k
Total earnings
$114k

Billed in all: $115k

World#33,772 / 412k
🇺🇦Country#2,337 / 14.3k
Per project
$3k

$19k in the last 6 months

World#55,744 / 412k
🇺🇦Country#3,019 / 14.3k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇺🇦Country#3,419 / 14.3k
Projects in all
38

Across 44 contracts

57% fixed43% hourly
World#79,289 / 412k
🇺🇦Country#3,516 / 14.3k

Earnings, last 30 days

$115k+$5.8k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$105k$110k$115k$120kOct 8Oct 23Nov 7

Skill rankings: Top 1% in Redux

Ranked by MRR among everyone on Upwork with the skill.

  1. #6webpack250 freelancers · 🇺🇦 #5Top 2%
  2. #13Bot Development927 freelancers · 🇺🇦 #2Top 1%
  3. #18Twilio API710 freelancers · 🇺🇦 #2Top 3%
  4. #44Redux3,245 freelancers · 🇺🇦 #18Top 1%
  5. #72Stripe3,151 freelancers · 🇺🇦 #3Top 2%
  6. #95Firebase6,978 freelancers · 🇺🇦 #10Top 1%
  7. #200React Native10,486 freelancers · 🇺🇦 #30Top 2%
  8. #474Node.js25,795 freelancers · 🇺🇦 #62Top 2%