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Mercy I.

Mercy I.

Full-Stack Developer | AI Agents, SaaS MVPs & CRM Automation

Need a developer who can build your SaaS and the AI agents that run inside it? I build both, end to end, and you own the code. AI AGENTS AND AUTOMATION I build AI agents that take over a business job: they qualify and answer leads, book appointments, update your CRM and hand off to a person when needed. I also build chatbots for WhatsApp or your website that answer from your own documents (RAG), and workflow automation with n8n connected to your CRM, calendar, email and APIs. FULL-STACK DEVELOPMENT As a full-stack developer I work in Next.js, React and Node.js with Supabase, from login and payments to deployment and handover. I build SaaS MVPs, web apps, dashboards and customer portals, and I fix and finish apps that stalled before launch. WHAT I CAN HELP WITH * Build your SaaS, MVP or web app * Build an AI agent for lead qualification and CRM automation * Build an AI chatbot or RAG assistant for support * Connect your tools: CRM, calendar, email, WhatsApp and APIs * Review, fix and launch an existing app or prototype * Add an AI feature to a product you already have HOW I WORK You send your idea, links and deadline. I reply with questions and a clear scope, and you see working progress every week. You get clean, secure, production-ready code, testing, documentation and support after launch. Not sure where to start? Message me what you want to automate or build, and I will tell you what is realistic and what to do first.

🇳🇬Benin City, Nigeria$25/hr100% JSS1.00 (1)Since Apr 2026
GlobeUpwork

Earnings and projects

MRR
$301

Last 6 months ÷ 4.7 months active (since Jun 2026)

World#98,134 / 412k
🇳🇬Country#3,179 / 13.8k
Revenue, last 30 days
$0

Last 6 months: $1.4k

Total earnings
$1.4k

Billed in all: $1.5k

World#362,486 / 412k
🇳🇬Country#11,144 / 13.8k
Per project
$481

$713 in the last 6 months

World#186,341 / 412k
🇳🇬Country#4,201 / 13.8k
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇳🇬Country#5,057 / 13.8k
Projects in all
3
0% fixed100% hourly
World#304,140 / 412k
🇳🇬Country#11,408 / 13.8k

Earnings, last 30 days

$1.5kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,520$1,540$1,560$1,580Oct 8Oct 23Nov 7

Skill rankings: Top 22% in React

Ranked by MRR among everyone on Upwork with the skill.

  1. #707LLM Prompt Engineering2,457 freelancers · 🇳🇬 #16Top 29%
  2. #875Chatbot Development3,106 freelancers · 🇳🇬 #36Top 28%
  3. #1,074Stripe3,151 freelancers · 🇳🇬 #25Top 34%
  4. #1,230LangChain3,821 freelancers · 🇳🇬 #13Top 32%
  5. #1,507Supabase4,116 freelancers · 🇳🇬 #35Top 37%
  6. #1,830SaaS Development5,201 freelancers · 🇳🇬 #33Top 35%
  7. #2,113Claude5,112 freelancers · 🇳🇬 #89Top 41%
  8. #2,148AI Chatbot6,841 freelancers · 🇳🇬 #86Top 31%