Ayodele John Oluwaseyi

Frontend Engineer (React • Next.js • TypeScript • Tailwind)

GitHub | LinkedIn

About

Results-driven Frontend Engineer with 2+ years of experience specializing in developing high-performance, scalable, and accessible web applications using Next.js, React, and TypeScript. Proven ability to translate complex requirements into intuitive user interfaces, optimize application speed, and integrate robust authentication and API solutions, consistently delivering production-ready features for diverse platforms including healthcare and non-profit sectors.

Work Experience

Frontend Engineer

Humble Vessel Foundation (NGO Platform)

May 2025 - Nov 2025

Kampala, Central Region, Uganda

Led the development of a multilingual NGO platform interface, focusing on user accessibility and efficient payment integrations to expand global reach.

  • Led the development of a multilingual NGO platform interface using Next.js and Tailwind CSS, achieving full desktop and mobile responsiveness to expand global reach.
  • Created and standardized a library of reusable UI components for critical features such as donation forms, volunteer registration modules, and dynamic content sections, streamlining development.
  • Successfully integrated diverse payment gateways, including Yo!Payments and SWIFT donation flows, into the user interface, enabling secure and efficient financial transactions.
  • Managed end-to-end deployment processes, including DNS configuration, SSL certification, and automated preview environments on Vercel, ensuring continuous delivery and reliability.
  • Enhanced user experience and platform accessibility through targeted fixes and optimized page load speed by compressing images and scripts, improving overall site performance.

Frontend Engineer

WellaPath (AltHub/AltSchool)

Jun 2024 - May 2025

Kampala, Central Region, UG

Built and maintained core UI pages for a healthcare platform, implementing secure authentication flows and enhancing performance through optimized API usage.

  • Spearheaded the development and maintenance of critical UI pages for a healthcare platform using Next.js, React, and TypeScript, ensuring high responsiveness and scalability.
  • Engineered and integrated secure authentication flows utilizing AWS Cognito, comprehensive token handling, and efficient user state management, safeguarding sensitive patient data.
  • Designed and built key user interface components, including a symptom checker, clinic locator, and personalized profile dashboard, enhancing user engagement and platform utility.
  • Optimized frontend performance by implementing React Query caching, debouncing mechanisms, and streamlined API usage, resulting in faster load times and improved user experience.
  • Collaborated cross-functionally with backend teams to define and align API contracts, facilitating seamless data integration and robust application functionality.

Frontend Engineer

Axelus × Boratu Registration System

Nov 2023 - Jun 2024

Kampala, Central Region, UG

Developed multi-step registration flows and designed intuitive form interfaces, integrating with secure backend APIs to improve user experience and reduce drop-off rates.

  • Developed comprehensive multi-step registration flows, incorporating robust validation, intuitive progress tracking, and seamless transitions to enhance user onboarding.
  • Designed and implemented clean, user-centric form interfaces and interactive dashboards using React, TypeScript, and Tailwind CSS, improving data input efficiency.
  • Seamlessly integrated the frontend with secure backend APIs via Next.js API routes, ensuring reliable data exchange and system integrity.
  • Contributed critical UI logic for core functionalities including user authentication, email confirmation processes, and event-driven workflows, ensuring system reliability.
  • Significantly improved user experience (UX) and reduced registration drop-off rates by simplifying complex forms and integrating real-time inline feedback mechanisms.

Education

Networking & Cybersecurity

ISBAT University

Jan 2023 - Dec 2026

Kampala, Central Region, UG

Cybersecurity

AltSchool Africa

Jan 2024 - Dec 2025

Kampala, Central Region, UG

Projects

Supabase Practice Modules (Auth + Storage + Real-time Concepts)

Explored and implemented Supabase functionalities for authentication, row-level security, and real-time UI updates through practical test UIs.

Cloud Security Labs (Frontend + Cloud Skills)

Jan 2024 - Dec 2025

Configured secure user interfaces integrated with AWS services and practiced secure frontend-to-cloud workflows.

Skills

Cloud & APIs

  • Supabase (Auth, Storage, Real-time Concepts)
  • AWS Cognito
  • REST APIs

State Management & Data Fetching

  • React Query
  • SWR
  • Context API
  • Redux Toolkit

Backend for Frontend (BFF)

  • Node.js
  • Express.js
  • API Integration

Frontend Development

  • Next.js
  • React.js
  • TypeScript
  • JavaScript ES6+
  • Tailwind CSS
  • PrimeReact
  • Radix UI
  • Framer Motion

Performance Optimization

  • Code Splitting
  • Memoization
  • Virtualization
  • Caching
  • Debounced Search

Development Tools & DevOps

  • Git
  • GitHub
  • Postman
  • Figma
  • Vercel
  • Hostinger
  • CI/CD (GitHub Actions)