Constantin O.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Expert React Developer

I am a Web Frontend Developer with experience in game development, online betting, financial and child care apps. I strive for perfection by having great attention to details and passion for what I do.

🇷🇴Cluj-Napoca, Romania$100/hr30% JSS5.00 (2)Since Feb 2014

Earnings and projects

MRR (estimate)

≈ $0≈$0

An estimate from an earlier read

#206,772 / 412,022 / 412k

🇷🇴#1,223 / 2,286 / 2,286

Revenue, last 30 days

$0$0

Total earnings

$8,828$8.8k

Billed in all: $9,808$9.8k

#206,772 / 412,022 / 412k

🇷🇴#1,223 / 2,286 / 2,286

Per project

$8,828$8.8k

Projects, last 6 months

#209,850 / 412,022 / 412k

🇷🇴#1,013 / 2,286 / 2,286

Projects in all

Across 2 contracts

0% fixed100% hourly

#360,671 / 412,022 / 412k

🇷🇴#2,089 / 2,286 / 2,286

$9.8kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch

No data since Nov 5, 2026.

Skills

AngularJS CSS 3 HTML5 JavaScript React Bootstrap React Native Adobe Flash Adobe Flex

Constantin O.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Earnings and projects

Earnings, last 30 days

Skills