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Joshua J.
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Joshua J.

Senior AI Engineer | Web3

Hi, I'm Josh, a Senior AI Engineer focused on agent systems, MCP servers, and blockchain. Over four years I've shipped production work contributing to $6M+ in client revenue across DeFi, fintech, and agent infrastructure. My expertise includes: AI Agent Development: Proficient in LangChain, LangGraph, MCP, Anthropic Claude API, and OpenAI API, with experience in building multi-agent systems and evaluation pipelines. MCP Server Development: Experienced in building custom MCP servers with Python and FastAPI, supporting OAuth flows and multiple transport options. Blockchain Development: Proficient in Solidity, Hardhat, Foundry, and The Graph Protocol, with experience in smart contract development, decentralized exchanges, and full Layer 1 implementations. Full-Stack Development: Skilled in React, Next.js, Node.js, TypeScript, and AWS, building production interfaces and backend services for AI-native and Web3 applications. If you've got an AI agent, MCP server, or smart contract project in mind, message me with what you're trying to build.

🇺🇸Lakeland, United States$100/hr100% JSS5.00 (2)Since Sep 2022

Earnings and projects

MRR
$742

Last 6 months ÷ 6

World#61,165 / 412k
🇺🇸Country#9,576 / 62.1k
Revenue, last 30 days
$0

Last 6 months: $4.5k

Total earnings
$23k

Billed in all: $24k

World#130,494 / 412k
🇺🇸Country#21,881 / 62.1k
Per project
$3.8k

$4.5k in the last 6 months

World#45,092 / 412k
🇺🇸Country#7,528 / 62.1k
Projects, last 6 months
1
100% fixed0% hourly
World#128,095 / 412k
🇺🇸Country#16,472 / 62.1k
Projects in all
6
50% fixed50% hourly
World#250,292 / 412k
🇺🇸Country#35,789 / 62.1k

Earnings, last 30 days

$24.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$23,750$24,000$24,250$24,500Oct 8Oct 23Nov 7

Skill rankings: Top 8% in Solidity

Ranked by MRR among everyone on Upwork with the skill.

  1. #41Blockchain Architecture305 freelancers · 🇺🇸 #4Top 13%
  2. #41Pinecone202 freelancers · 🇺🇸 #5Top 20%
  3. #68Solidity849 freelancers · 🇺🇸 #11Top 8%
  4. #157Blockchain1,753 freelancers · 🇺🇸 #14Top 9%
  5. #457GraphQL3,403 freelancers · 🇺🇸 #26Top 13%
  6. #486Prompt Engineering2,859 freelancers · 🇺🇸 #73Top 17%
  7. #514AI Consulting2,321 freelancers · 🇺🇸 #167Top 22%
  8. #566NestJS3,757 freelancers · 🇺🇸 #23Top 15%