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Senior Frontend Engineer with 7+ years of experience delivering fast, accessible, and fully responsive web applications using modern mobile-first practices. Expert in React.js, Next.js. Proficient with Tailwind CSS, Sass/SCSS, and React Native for iOS. Proven ability to build high-performance, pixel-perfect UIs for desktop and mobile while maintaining clean, scalable code in fast-paced agile teams. Throughout my career, I have worked on leveraging cloud platforms like AWS, Microsoft Azure, and GCP, with a focus on AWS services.…Senior Frontend Engineer with 7+ years of experience delivering fast, accessible, and fully responsive web applications using modern mobile-first practices. Expert in React.js, Next.js. Proficient with Tailwind CSS, Sass/SCSS, and React Native for iOS. Proven ability to build high-performance, pixel-perfect UIs for desktop and mobile while maintaining clean, scalable code in fast-paced agile teams. Throughout my career, I have worked on leveraging cloud platforms like AWS, Microsoft Azure, and GCP, with a focus on AWS services.

Terry Stone

Front-End Developer, Web Developer, Full Stack Developer, +2

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Senior Frontend Engineer with 7+ years of experience delivering fast, accessible, and fully responsive web applications using modern mobile-first practices. Expert in React.js, Next.js. Proficient with Tailwind CSS, Sass/SCSS, and React Native for iOS. Proven ability to build high-performance, pixel-perfect UIs for desktop and mobile while maintaining clean, scalable code in fast-paced agile teams. Throughout my career, I have worked on leveraging cloud platforms like AWS, Microsoft Azure, and GCP, with a focus on AWS services.…Senior Frontend Engineer with 7+ years of experience delivering fast, accessible, and fully responsive web applications using modern mobile-first practices. Expert in React.js, Next.js. Proficient with Tailwind CSS, Sass/SCSS, and React Native for iOS. Proven ability to build high-performance, pixel-perfect UIs for desktop and mobile while maintaining clean, scalable code in fast-paced agile teams. Throughout my career, I have worked on leveraging cloud platforms like AWS, Microsoft Azure, and GCP, with a focus on AWS services.

Available to hire

Senior Frontend Engineer with 7+ years of experience delivering fast, accessible, and fully responsive web applications using modern mobile-first practices. Expert in React.js, Next.js. Proficient with Tailwind CSS, Sass/SCSS, and React Native for iOS.

Proven ability to build high-performance, pixel-perfect UIs for desktop and mobile while maintaining clean, scalable code in fast-paced agile teams. Throughout my career, I have worked on leveraging cloud platforms like AWS, Microsoft Azure, and GCP, with a focus on AWS services.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Software Engineer at Jelvix

January 1, 2023 - January 1, 2025

Architected and owned scalable full-stack platform using React, Next.js, TypeScript, Node.js, and cutting-edge AI integrations (OpenAI, Groq, Deepgram) delivering real-time call analysis and gamified sales training. Led frontend infrastructure with React, Next.js (App Router), TypeScript, Tailwind CSS, and Shadcn/UI for a high-growth AI startup. Drove end-to-end feature development of AI-powered real-time sales intelligence, including live transcription, analysis, coaching insights, training agents, and dashboards. Built low-latency back-end systems and APIs with Node.js, Express.js, Next.js API Routes & Server Components, PostgreSQL (via Supabase) and Firebase, supporting real-time WebSocket connections. Integrated AI and speech technologies (OpenAI API, Groq, Deepgram, Claude) to deliver real-time transcription, sentiment analysis, objection handling, and personalized sales coaching — directly driving a 30% revenue increase for clients. Owned all UI/UX decisions and established a d

Frontend / Mobile Developer at Collatree

January 1, 2022 - January 1, 2023

Migrated and delivered high-performance real-time web and cross-platform mobile casino/gaming applications using React, Redux, React Native and AWS; led front-end modernization, performance optimizations, and team best practices in an Agile environment. Developed real-time applications with seamless data updates and cross-platform experiences. Implemented code-splitting and lazy loading to boost performance, collaborated with designers to create intuitive UIs, and provided technical guidance and code reviews to junior teammates.

Frontend Developer at IT offer

January 1, 2019 - January 1, 2021

Migrated legacy HTML/JavaScript codebase to modern ReactJS component architecture with modular Sass (CSS Modules / BEM). Built cross-browser, mobile-first interfaces supporting all modern browsers and devices, achieving 100% responsiveness across breakpoints. Implemented advanced responsiveness techniques, SEO improvements, and performance optimizations; collaborated with designers on UI/UX assets and conducted user-focused research and A/B testing. Worked in a 10-person team using Git and Bitbucket for version control and project management.

Frontend Developer Intern at Website Development EU

January 1, 2018 - January 1, 2019

Assisted in designing and developing responsive, pixel-perfect front-end solutions using HTML5, CSS3, Sass, JavaScript and React.js. Supported UI mockups and prototypes in Photoshop, converted designs into production-ready code, and implemented basic animations. Optimized site performance via Cloudflare, contributed to on-page SEO improvements, and collaborated with a 10-person team using Git for version control.