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Daniel Ayeni

Full-Stack Engineer & AI SaaS Builder

I'm a full-stack engineer and AI SaaS builder based in Nigeria, working with engineering teams and founders globally.

I've shipped 5+ production software products across personal and professional work. My most recent personal project is RunPitch — an AI proposal generator powered by GPT-4 and Claude, live with paying users. The rest came through professional engineering work — including Help Writing Resumes — where I've built and maintained real products end-to-end.

I don't hand things off at the hard parts. I take a product from idea to deployed: database, API, frontend, AI integration, billing, CI/CD, and monitoring. If it needs to be production-ready, I treat it like production from day one.

Stack:

  • Frontend — React, Next.js, TypeScript, Tailwind CSS
  • Backend — Node.js, NestJS, Express, Bun, Hono
  • Databases — PostgreSQL, MongoDB, Supabase, MySQL
  • AI — OpenAI API (GPT-4), Claude API (Anthropic), prompt engineering, RAG pipelines
  • Payments — Stripe (subscriptions, one-time, free tiers)
  • Cloud & DevOps — AWS (EC2, S3, IAM), Docker, GitHub Actions, Vercel

I'm currently open to both full-time engineering roles and independent project work. If you're building something and need someone who's shipped before — let's talk.

Available for hire

What I build for clients

AI Integration Audit

Review your product, identify the highest-ROI AI opportunity, deliver a technical roadmap.

$500–$1,500

AI SaaS MVP Build

Full-stack AI product from architecture to deployment — Next.js, NestJS, OpenAI/Claude, Stripe, AWS.

$3,000–$10,000

Monthly Retainer

Ongoing engineering support for live AI products. New features, model upgrades, bug fixes.

$1,000–$3,000/mo