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Feyijimi Erinle

@feyijimierinle

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Senior Frontend Engineer building scalable SaaS apps with React, Next.js, and TypeScript.

Nigeria

Message

What I'm looking for

I’m looking for a product-focused team where I can architect scalable React/Next.js frontends, build reusable design systems, improve performance and accessibility, and partner with design and backend to ship reliable SaaS features.

I’m a Senior Frontend Engineer with 6+ years of experience building scalable SaaS applications and high-performance web platforms. I focus on reusable component systems, performance optimization, and accessible, responsive user experiences that hold up at scale.

At Datamellon (Remote), I architect and develop frontend applications with React, Next.js, TypeScript, and Tailwind CSS for AI-powered SaaS. I’ve optimized performance with code splitting, lazy loading, and bundle optimization—reducing load times by over 20%—and improved responsiveness by reducing unnecessary API requests by 30% using Redux and React Query. I also integrate REST APIs, GraphQL, and third-party platforms, and I set up CI/CD pipelines with GitHub Actions and AWS CodePipeline for automated testing and deployments.

Previously, as Founding Frontend Engineer at Shestel, I helped build and integrate a high-traffic e-commerce frontend, including real-time WebSocket-based experiences. I automated testing to reach 95% code coverage and reduced post-release defects by 40%, while also addressing performance bottlenecks and memory leaks. Earlier, as Front-End Engineer (Team Lead) at Dash Language School, I led a team to deliver mobile-first responsive web apps, cut development time by 60%, improved accessibility, and supported feature work that increased online traffic by 25%.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Datamellon

Nov 2022 - Present (3 years 9 months)

Architected and developed scalable frontend applications for AI-powered SaaS products using React, Next.js, and TypeScript. Built reusable UI component libraries, integrated REST and GraphQL services, and optimized performance to reduce load times by over 20% while improving state management and CI/CD automation.

React Next.js TypeScript UI Components REST APIs GraphQL Lazy Loading Caching Redux React Query CI CD GitHub Actions AWS CodePipeline

Founding Frontend Engineer

Shestel

Jan 2021 - Sep 2023 (2 years 8 months)

Developed frontend components for a high-traffic e-commerce platform using React and supported real-time user experiences with WebSockets. Partnered with backend teams on API integration, implemented CI/CD with Jenkins and Docker, and improved reliability through automated unit and integration testing.

React WebSockets API Integration CI CD Jenkins Docker Unit Testing Integration Testing Chrome DevTools Performance Profiling

Front-End Engineer (Team Lead)

Dash Language School

Jan 2020 - May 2022 (2 years 4 months)

Led a team to design and deploy mobile-first, responsive web applications and built reusable UI components to improve development speed and consistency. Implemented accessibility best practices, handled frontend integration via REST APIs and GraphQL, and mentored developers through code reviews and architecture decisions.

UI Components Responsive UI Accessibility REST APIs GraphQL Frontend Architecture Component Libraries Code Review Mentorship

Front-End Engineer

Side Hustle

Mar 2019 - Dec 2019 (9 months)

Modernized outdated frontend codebases to align with modern standards and improved maintainability. Built a localization framework to reduce multilingual development time and applied performance optimizations to reduce page load time and improve retention.

Localization Performance Optimization