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Hau V.
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Hau V.

AI Solution Consultant | Fractional CTO

Help startups and indie hackers build secure, reliable, and scalable software, allowing founders to focus on business growth without worrying about technical limitations or system failures. Some of my past projects: - Invygo: a car subscription platform operating in the UAE and Saudi Arabia, serving over 20,000 long-term paying subscribers (from 1 yr), more than 100,000 total subscribers, and managing over 5,000 vehicles. - Ayyeka: a global IoT platform for critical data management, processing more than 3 million data points per hour across the US, Europe, MENA, and Asia. How can I help: - Design or improve scalable and reliable software architectures. - Do improvements for security and compliance requirements. - Build production-ready MVPs. - Build reliable and measurable AI solutions using LLMs, RAG, and agents. Also much experience for fixing hallucinations in AI systems. - Lead cross-functional teams and technical projects to achieve business goals. - Mentor junior engineers. I offer a free 15-minute consultation. Feel free to schedule a call to discuss your product or technical challenges. Keywords: - Backend: Node, Python, NestJS, Hono, Go, GraphQL, REST, tRPC, WebSocket, SSE, WebRTC, etc - Frontend: React, Next, Angular, Vue, TypeScript, Tailwind. - Mobile: React Native, Expo, iOS, Android, BLE. - Data: PostgreSQL, MongoDB, Redis, Supabase, Prisma, Drizzle. - Cloud: AWS, GCP, Cloudflare, Docker, Kubernetes, Terraform, CI/CD. - AI: Generative AI, Agentic AI, Automation, RAG, LangGraph / LangChain, Mastra, Vercel AI SDK, Composio, Embeddings, Vector DBs. - Payments: Stripe, PayPal, RevenueCat, Paddle, Polar, Checkout.

🇻🇳Ho Chi Minh, Vietnam$60/hr100% JSS5.00 (32)Since Jun 2012
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Earnings and projects

MRR
$511

Last 6 months ÷ 6

World#77,071 / 412k
🇻🇳Country#683 / 3,463
Revenue, last 30 days
$2.1k

Last 6 months: $3.1k

World#20,323 / 412k
🇻🇳Country#179 / 3,463
Total earnings
$558k

Billed in all: $565k

World#2,188 / 412k
🇻🇳Country#23 / 3,463
Per project
$16k

$1.5k in the last 6 months

World#8,117 / 412k
🇻🇳Country#61 / 3,463
Projects, last 6 months
2
50% fixed50% hourly
World#88,918 / 412k
🇻🇳Country#941 / 3,463
Projects in all
34

Across 40 contracts

15% fixed85% hourly
World#87,477 / 412k
🇻🇳Country#715 / 3,463

Earnings, last 30 days

$565k+$2.1k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$562k$564k$566kOct 8Oct 23Nov 7

Skill rankings: Top 15% in Angular

Ranked by MRR among everyone on Upwork with the skill.

  1. #240AI Platform816 freelancers · 🇻🇳 #4Top 29%
  2. #315Software Architecture & Design1,465 freelancers · 🇻🇳 #2Top 22%
  3. #386AI Bot1,765 freelancers · 🇻🇳 #1Top 22%
  4. #618Software Development2,923 freelancers · 🇻🇳 #6Top 21%
  5. #679NestJS3,757 freelancers · 🇻🇳 #14Top 18%
  6. #1,041Angular6,816 freelancers · 🇻🇳 #12Top 15%
  7. #1,670Mobile App Development8,511 freelancers · 🇻🇳 #16Top 20%
  8. #1,909React Native10,486 freelancers · 🇻🇳 #31Top 18%