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SONY JOHNS

@sonyjohns

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Senior Frontend Engineer specializing in React, TypeScript, performance and accessible UI development.

United Kingdom

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What I'm looking for

I seek frontend roles where I can lead React-driven UI development, improve performance and accessibility, mentor engineers, and contribute to CI/CD and scalable product delivery.

I am a Senior Frontend Engineer with 7+ years building scalable, responsive web applications using React.js, JavaScript, TypeScript, and Redux. I focus on performance optimisation, accessible UI, CI/CD pipelines, and translating Figma designs into reusable, pixel-perfect components while mentoring teams and enforcing clean architecture.

I've delivered front-end solutions across PWA, B2C and B2B ecommerce and sustainability platforms, improved developer productivity with reusable components and tooling, and contributed to Agile delivery and digital transformation initiatives backed by Azure and CI/CD practices.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Wipro

Oct 2024 - Jun 2025 (8 months)

Led React.js front-end development using functional components and Hooks, enhanced CI/CD pipelines, and delivered responsive, accessible UI components with Material UI to meet project deadlines.

React hooks Material UI CI CD Responsive Design Accessibility Code Review Mentoring

Technology Analyst

Infosys

Dec 2021 - Aug 2024 (2 years 8 months)

Developed responsive React.js applications using Hooks and Redux, integrated REST APIs and Context API to improve real-time data handling, and contributed to Agile delivery and CI/CD improvements.

React hooks Redux Context API REST APIs CI CD Agile Performance Optimization

Software Engineer

Webandcrafts

Oct 2020 - Dec 2021 (1 year 2 months)

Built a PWA storefront integrated with Magento 2 backend, developed reusable UI components to improve mobile performance and accelerate future project delivery.

PWA Magento Performance Optimization Responsive Design Javascript (ES6)

Junior Software Engineer

Rawdata Technologies

Dec 2017 - Oct 2020 (2 years 10 months)

Developed responsive front-end solutions in React.js, applied ES6+ features, and implemented ESLint and Jest to improve code quality, maintainability, and cross-browser compatibility.