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Jose Rafael R.

Jose Rafael R.

Full Stack Developer

I am a Full Stack & AI Engineer with over 20 years of experience building resilient, enterprise-scale software and solving complex architectural challenges. My expertise spans the entire lifecycle of software development, from managing high-stakes legacy migrations to engineering modern production-grade Artificial Intelligence (AI) and Machine Learning (ML) systems. I specialize in designing and deploying intelligent automation frameworks, utilizing advanced LLM-based Agents for autonomous decision-making and orchestrating workflows via the Model Context Protocol (MCP) to seamlessly bridge the gap between AI models and secure data sources. I prioritize sound technical decisions that balance cutting-edge performance with long-term maintainability, remaining highly adaptable when integrating emerging technologies or pivoting to meet shifting business requirements. A proven track record of delivering measurable results, I have consistently driven significant operational savings and achieved zero-downtime deployments in high-availability environments.

🇨🇴Medellin, Colombia$60/hr80% JSSSince Jul 2024

Earnings and projects

MRR
$8.1k

Last 6 months ÷ 5.6 months active (since May 2026)

World#2,024 / 412k
🇨🇴Country#12 / 4,578
Revenue, last 30 days
$11k

Last 6 months: $46k

World#1,197 / 412k
🇨🇴Country#9 / 4,578
Total earnings
$46k

Billed in all: $49k

World#80,909 / 412k
🇨🇴Country#693 / 4,578
Per project
$23k

$46k in the last 6 months

World#4,686 / 412k
🇨🇴Country#52 / 4,578
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇨🇴Country#1,261 / 4,578
Projects in all
2
50% fixed50% hourly
World#328,886 / 412k
🇨🇴Country#2,673 / 4,578

Earnings, last 30 days

$48.7k+$10.9k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$30k$40k$50kOct 8Oct 23Nov 7

Skill rankings: Top 0.54% in Bootstrap

Top 1% in 5 of 6 skills, ranked by MRR among everyone on Upwork with the skill.

  1. #37Bootstrap6,899 freelancers · 🇨🇴 #1Top 0.54%
  2. #51jQuery8,973 freelancers · 🇨🇴 #2Top 0.57%
  3. #99MySQL14,471 freelancers · 🇨🇴 #1Top 0.68%
  4. #173PHP24,835 freelancers · 🇨🇴 #2Top 0.70%
  5. #284Node.js25,795 freelancers · 🇨🇴 #1Top 1%
  6. #322React33,075 freelancers · 🇨🇴 #1Top 0.97%