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Daniel Ayeni

Full-Stack Software Engineer|

Building scalable web applications, AI-powered platforms, and modern SaaS solutions with cutting-edge technologies that solve peculiar business challenges.

Featured Projects

A selection of my recent work building scalable applications and innovative solutions

RunPitch
Featured
Live

RunPitch

Built an AI-powered proposal generator that helps Upwork freelancers win more clients. The platform analyzes job postings and crafts personalized, high-converting proposals in seconds. Features include multiple AI models (GPT-4, Claude), profile optimization, tone customization, and a tiered subscription system. Delivered a production-ready SaaS with free tier, payment integration, and growing user adoption from freelancers worldwide.

Next.jsReactTypeScriptOpenAI APIClaude APIStripeTailwind CSS
Visit Project
Help Writing Resumes
Live

Help Writing Resumes

Led a team of developers to build a full-stack AI-powered platform that helps users generate tailored, ATS-optimized resumes and cover letters. Spearheaded development across both frontend and backend—integrating OpenAI for AI content generation, Google OAuth for authentication, and Stripe for subscription billing. Delivered PDF export, dynamic user dashboards, and maintain code review and deployment. Resulted in a production-ready, tier-based SaaS with a growing user base and positive feedback from job seekers.

ReactNode.jsExpress+5
Upshores
Case Study

Upshores

Built a full-stack, multi-tenant job platform connecting companies with global talent across regions. Worked across both frontend and backend, translating pixel-perfect Figma designs into responsive interfaces and building scalable APIs and role-based access controls. Integrated multilingual support, secure file uploads with Cloudinary, and optimized UX for job seekers and recruiters. Delivered a production-ready, performant SaaS solution designed for growth and international reach.

ReactNode.jsMongoDB+5
AI Email Chrome Extension
Live

AI Email Chrome Extension

Collaborated with developers to build a Chrome extension that enhances email productivity directly within Gmail. Worked across both frontend and backend components, ensuring seamless integration with Gmail's UI. Focused on delivering a clean, intuitive user experience with real-time analysis and seamless authentication flow. Implemented persistent storage, extension lifecycle management, and performance optimizations for a smooth user flow. Resulted in a lightweight, reliable productivity tool adopted by many.

JavaScriptChrome Extension APIOpenAI API+1

Tech Stack

Technologies I use to build scalable, maintainable applications

React
Next.js
TypeScript
Tailwind CSS
JavaScript
HTML/CSS
Node.js
NestJS
Express
Go
REST APIs
PostgreSQL
MongoDB
MySQL
TypeORM
AWS
Docker
GitHub Actions
Vercel
Git
OpenAI API
Stripe
Figma

Recent Posts

Thoughts, tutorials, and insights on software development and technology

Let's Build Something Amazing

Have a project in mind? I'm always open to discussing new opportunities, creative ideas, or ways to bring your vision to life.