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Sergei B.
Expert-Vetted

Sergei B.

Ruby on Rails Architect / Full-Stack Developer

Transforming your exciting ideas into perfect software. I take software architecture and design as art. Over 11 years in web-dev, I’ve known tons of how to and how not to. Please check out my Highlights, Priorities, and the topmost Completed Job’s card before going on searching. I’m looking for a new long-term job in a few months. If you have an exciting product or idea that I could help implement, let’s talk about it. My Highlights: - Wide expertise in eCommerce (from inventory to fulfilment), Billing systems (from payments to intelligence), GIS - Architected and led development of projects with total of 100M+ USD lifetime turnover and no money loss incidents - Hired and led a team of 4 talented Rails developers for 2 years - 10+ years of consistent commercial development on Rails and Javascript - Lead developer on 10+ Rails/JS projects lived up to production usage - Integrated Rails projects with total of 30+ programs and platforms you have used or heard of and 100+ you haven’t - Mastered 50+ RubyGems that you’d likely include in your Rails applications My Priorities: - Making greatest possible value for the project, not just getting paid - Taking the most out of collaboration with product owners and teammates - Learning new skills and tools to keep up with modern development practices - Delivering reasonably perfect code following best practices

🇹🇭Ko Samui, Thailand$200/hr100% JSS5.00 (36)Since Dec 2014

Earnings and projects

MRR
$20k

Last 6 months ÷ 6

World#208 / 412k
🇹🇭Country#1 / 1,118
Revenue, last 30 days
$25k

Last 6 months: $122k

World#150 / 412k
🇹🇭Country#1 / 1,118
Total earnings
$1.10M

Billed in all: $1.12M

World#443 / 412k
🇹🇭Country#1 / 1,118
Per project
$27k

$122k in the last 6 months

World#3,577 / 412k
🇹🇭Country#18 / 1,118
Projects, last 6 months
1
0% fixed100% hourly
World#128,095 / 412k
🇹🇭Country#341 / 1,118
Projects in all
41

Across 45 contracts

47% fixed53% hourly
World#74,021 / 412k
🇹🇭Country#204 / 1,118

Earnings, last 30 days

$1.12M+$24.8k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1.08M$1.10M$1.12M$1.14MOct 8Oct 23Nov 7

Skill rankings: #1 in 2 skills of 10

Rarest: top 0.06% in Docker, of 8,761. Ranked by MRR among everyone on Upwork with the skill.

  1. 1RabbitMQ552 freelancers · 🇹🇭 #1Top 0.18%
  2. 1PostGIS225 freelancers · 🇹🇭 #1Top 0.44%
  3. 2Ruby on Rails1,811 freelancers · 🇹🇭 #1Top 0.11%
  4. 3AngularJS3,100 freelancers · 🇹🇭 #1Top 0.10%
  5. #4Software Architecture & Design1,465 freelancers · 🇹🇭 #1Top 0.27%
  6. #5Docker8,761 freelancers · 🇹🇭 #1Top 0.06%
  7. #5Data Modeling1,203 freelancers · 🇹🇭 #1Top 0.42%
  8. #8Vue.js8,267 freelancers · 🇹🇭 #1Top 0.10%