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Emmanuel Nwaelom

@emmanuelnwaelom

Senior Full-Stack Developer at Freelance, building React and Next.js platforms, including a GPT-4 SaaS that cut inference costs by 30%.

Nigeria

Message

At Freelance, I led frontend architecture for production SaaS and fintech platforms, reducing average page load times from about four seconds to under 1.8 seconds. I also created a reusable design system used across client projects.

I designed and shipped an AI SaaS platform with GPT-4 streaming and a prompt and token-budget layer that reduced inference costs by 30%. Its streaming interface delivered sub-800ms perceived response latency.

Earlier, I shipped web applications for fintech and e-commerce clients, including dashboards for live financial transactions and a React Native app for iOS and Android. I hold a B.Eng in Mechatronic Engineering from University of Nigeria.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Developer

Current

Freelance

Jan 2023 - Present (3 years 9 months)

Led frontend architecture for 5+ production SaaS and fintech platforms using React and Next.js with TypeScript, reducing page load times and improving Core Web Vitals. Engineered a 60+ component design system and integrated REST/GraphQL APIs with WebSockets, maintaining 99%+ uptime for 3,000+ monthly active users.

React Next.js TypeScript Tailwind Framer Motion REST APIs GraphQL WebSockets Jest React Testing Library Cypress GPT 4 Prompt Engineering Token Budgeting CI CD Agile Scrum

Full-Stack Developer

Freelance

Jun 2022 - Dec 2022 (6 months)

Designed and shipped 3 end-to-end web applications for fintech and e-commerce clients using React, Node.js, Express.js, and MongoDB. Implemented secure JWT-based authentication and RBAC, built RESTful APIs, and established CI/CD pipelines on Vercel and Render.

React NodeJS ExpressJS MongoDB JWT RBAC REST APIs CI CD Vercel Render Health Checks

Frontend Developer

Contract

Jan 2021 - May 2022 (1 year 4 months)

Shipped 6+ mobile-first frontends across retail, logistics, and hospitality, achieving average Lighthouse scores of 85+. Migrated legacy jQuery codebases to React, implemented state management with Redux and React Query, and built WCAG AA-compliant UIs.