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Nelson C.
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Nelson C.

FullStack Developer | AI Agents | FastAPI | AWS | DevOps

Building intelligent, scalable web applications is my specialty. As a Full Stack Developer, I bridge the gap between robust backends and dynamic frontends, along with having experience on integrating AI Agents into modern software architectures. Whether you need a complex SaaS platform, an AI-powered automation/scraper tool, or a high-performance API, I deliver clean, efficient, and maintainable code. My Core Tech Stack 🤖 AI & Backend: Python, FastAPI, AI Agents (LLM integration, LangChain, etc.), Node.js 🖥️ Frontend: React.js, JavaScript/TypeScript, HTML5, CSS3, TailwindCSS 🚀 Cloud & DevOps: AWS (EC2, Lambda, S3), Docker, Git/Github, DigitalOcean, Redis 🔌 Others: Stripe Integration, Vercel, API limits and security measures. 🍒 The Cherry on Top: Full Support after Delivery. That's right, no additional cost. If anything breaks or you need minor changes, I will do it for free, ASAP.

🇧🇷Curitiba, Brazil$13/hr100% JSS5.00 (4)Since Nov 2025

Earnings and projects

MRR
$292

Last 6 months ÷ 6

World#99,423 / 412k
🇧🇷Country#1,188 / 4,647
Revenue, last 30 days
$0

Last 6 months: $1.7k

Total earnings
$3.3k

Billed in all: $3.5k

World#289,394 / 412k
🇧🇷Country#3,168 / 4,647
Per project
$476

$583 in the last 6 months

World#187,283 / 412k
🇧🇷Country#2,042 / 4,647
Projects, last 6 months
3
0% fixed100% hourly
World#66,479 / 412k
🇧🇷Country#654 / 4,647
Projects in all
7

Across 8 contracts

38% fixed62% hourly
World#236,188 / 412k
🇧🇷Country#2,164 / 4,647

Earnings, last 30 days

$3.5kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$3,450$3,500$3,550$3,600Oct 8Oct 23Nov 7

Skill rankings: Top 20% in SQL

Ranked by MRR among everyone on Upwork with the skill.

  1. #899Large Language Model2,726 freelancers · 🇧🇷 #6Top 33%
  2. #964DevOps4,403 freelancers · 🇧🇷 #20Top 22%
  3. #1,425Tailwind CSS6,978 freelancers · 🇧🇷 #12Top 20%
  4. #1,432FastAPI4,337 freelancers · 🇧🇷 #12Top 33%
  5. #1,780Amazon Web Services7,488 freelancers · 🇧🇷 #27Top 24%
  6. #1,844Docker8,761 freelancers · 🇧🇷 #29Top 21%
  7. #2,173AI Chatbot6,841 freelancers · 🇧🇷 #12Top 32%
  8. #2,625SQL12,903 freelancers · 🇧🇷 #58Top 20%