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Ben-Hur G.
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Ben-Hur G.

Senior Full-Stack JavaScript & AI Integration Developer

I help businesses and startups build modern, scalable, and high-performance web applications using cutting-edge technologies like React, Next.js, and Node.js. Beyond front-end and full-stack development, I specialize in delivering applied AI solutions — from Retrieval-Augmented Generation (RAG) systems and custom AI agents to chatbot workflows powered by LangChain, OpenAI, and vector databases. I focus on writing clean, maintainable code, implementing SEO-friendly architecture, and delivering seamless user experiences that drive measurable results. What I Offer: • Full-stack development with React, Next.js, MERN • AI/LLM integration (LangChain, Pinecone, OpenAI APIs, embeddings, context packs) • RAG pipelines and custom AI Agents (LangChain Agents, DynamicStructuredTools, prompt engineering) • API development, third-party integrations, and backend solutions • SEO & performance optimization • Responsive, mobile-first UI with Tailwind, Material UI, Shadcn Why Clients Work With Me: • Experience building end-to-end product features (from web apps to AI-powered assistants) • Hands-on with AI orchestration (agents, tool usage, memory, message flows) • Strong English communication & flexible working hours • Consistent, high-quality delivery with proactive problem-solving • Focused on business goals, not just code If you need a dedicated developer who can deliver both modern web apps and intelligent, AI-driven solutions, let’s talk.

🇵🇭Silang, Philippines$40/hr100% JSS4.94 (14)Since Dec 2010

Earnings and projects

MRR
$3.5k

Last 6 months ÷ 6

World#9,909 / 412k
🇵🇭Country#522 / 56.3k
Revenue, last 30 days
$3.6k

Last 6 months: $21k

World#9,636 / 412k
🇵🇭Country#520 / 56.3k
Total earnings
$191k

Billed in all: $201k

World#16,574 / 412k
🇵🇭Country#1,395 / 56.3k
Per project
$15k

$21k in the last 6 months

World#9,564 / 412k
🇵🇭Country#2,082 / 56.3k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇵🇭Country#14,297 / 56.3k
Projects in all
13

Across 20 contracts

30% fixed70% hourly
World#175,712 / 412k
🇵🇭Country#14,428 / 56.3k

Earnings, last 30 days

$201k+$3.6k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$196k$198k$200k$202kOct 8Oct 23Nov 7

Skill rankings: Top 2% in ExpressJS

Ranked by MRR among everyone on Upwork with the skill.

  1. #4Back-End Development Framework137 freelancers · 🇵🇭 #1Top 3%
  2. #7JSON API163 freelancers · 🇵🇭 #2Top 4%
  3. #14Object-Oriented Programming438 freelancers · 🇵🇭 #1Top 3%
  4. #25OAuth381 freelancers · 🇵🇭 #1Top 7%
  5. #106MERN Stack3,086 freelancers · 🇵🇭 #1Top 3%
  6. #135ExpressJS5,651 freelancers · 🇵🇭 #2Top 2%
  7. #157NestJS3,757 freelancers · 🇵🇭 #3Top 4%
  8. #240CSS 39,914 freelancers · 🇵🇭 #8Top 2%