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John Adepelumi

@johnadepelumi

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Frontend engineer specializing in React, TypeScript, Next.js and scalable AWS-backed user interfaces.

Nigeria

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What I'm looking for

I seek roles building scalable, user-focused web or mobile products with strong React/TypeScript stacks, collaborative teams, technical mentorship, and opportunities to design reliable AWS-backed systems.

I am a frontend engineer focused on building scalable, user-centric web and mobile applications using React, Next.js, React Native and TypeScript. I combine strong UI craftsmanship with backend integration experience to deliver reliable products that meet business goals.

At Evon Medics I re-engineered authentication workflows, automated data recovery that restored over 6,000 critical data points leading to a $2.8M grant, and built a remote physiological monitoring app and microservices using Node.js and TypeScript. I have led frontend migrations and provided technical leadership to improve performance and scalability.

I enjoy designing and maintaining maintainable systems on AWS, mentoring teams, and converting complex requirements into pixel-perfect interfaces that improve user experience and drive measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

Evon Medics LLC

Aug 2023 - Present (2 years 1 month)

Re-engineered authentication workflows and automated data recovery for the flagship cloud portal, restoring 6,000+ critical data points that supported a $2.8M grant; built React Native and Next.js applications and Node.js microservices on AWS to enable Stage 2 clinical trials.

React Native Next.js TypeScript Node Express AWS Microservices data recovery

Lead Frontend Developer

Broadshift Technologies

Nov 2022 - Aug 2023 (9 months)

Led migration of the admin panel from PHP to React+TypeScript, developed a shift management system that optimized staff scheduling and automated reporting, and provided frontend technical leadership and codebase refactors to improve performance.

React TypeScript Frontend Architecture Code Review Performance Optimization State Management Refactoring

Frontend Developer

Arkbridge Integrated Limited

Feb 2022 - Nov 2022 (9 months)

Built and maintained pixel-perfect UIs for web applications using React and refactored codebases to improve scalability and maintainability across projects.

React JavaScript CSS UI Development Refactoring Responsive Design

Frontend Developer

HNG

Aug 2021 - Oct 2021 (2 months)

Implemented pixel-perfect designs for plugin pages, enforced file/folder access management, and converted React plugins to Single SPA–compatible microservices to improve modularity and access control.

React Access Control JavaScript