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Senior Full Stack Engineer with 10+ years of experience building high-performance React and TypeScript applications across SaaS and large-scale web platforms. Strong focus on UI quality, responsiveness, state management, and translating complex workflows into intuitive product experiences. Experienced in frontend architecture, performance optimisation, dashboards, authentication flows, and scalable component-based systems. Comfortable partnering across product, design, and engineering to prototype, iterate, and ship polished user-facing features.…Senior Full Stack Engineer with 10+ years of experience building high-performance React and TypeScript applications across SaaS and large-scale web platforms. Strong focus on UI quality, responsiveness, state management, and translating complex workflows into intuitive product experiences. Experienced in frontend architecture, performance optimisation, dashboards, authentication flows, and scalable component-based systems. Comfortable partnering across product, design, and engineering to prototype, iterate, and ship polished user-facing features.

Greg Johnson

Full Stack Developer, Web Developer, Front-End Developer, +1

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Senior Full Stack Engineer with 10+ years of experience building high-performance React and TypeScript applications across SaaS and large-scale web platforms. Strong focus on UI quality, responsiveness, state management, and translating complex workflows into intuitive product experiences. Experienced in frontend architecture, performance optimisation, dashboards, authentication flows, and scalable component-based systems. Comfortable partnering across product, design, and engineering to prototype, iterate, and ship polished user-facing features.…Senior Full Stack Engineer with 10+ years of experience building high-performance React and TypeScript applications across SaaS and large-scale web platforms. Strong focus on UI quality, responsiveness, state management, and translating complex workflows into intuitive product experiences. Experienced in frontend architecture, performance optimisation, dashboards, authentication flows, and scalable component-based systems. Comfortable partnering across product, design, and engineering to prototype, iterate, and ship polished user-facing features.

Available to hire

Senior Full Stack Engineer with 10+ years of experience building high-performance React and TypeScript applications across SaaS and large-scale web platforms.

Strong focus on UI quality, responsiveness, state management, and translating complex workflows into intuitive product experiences. Experienced in frontend architecture, performance optimisation, dashboards, authentication flows, and scalable component-based systems.

Comfortable partnering across product, design, and engineering to prototype, iterate, and ship polished user-facing features.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Full Stack Engineer at Debenhams / Boohoo.com

February 1, 2016 - February 1, 2026

Designed and built full-stack applications using React, Next.js, TypeScript, Node.js/Express, and PostgreSQL. Developed desktop-ready productivity apps with Electron. Built a contractor recruitment platform from scratch with OpenAPI integrations and guided question flows that generate customized CVs. Created a real-time multiplayer card game web app using Socket.IO. Delivered a SaaS workforce time-tracking platform with real-time dashboards and reporting. Implemented secure authentication, role-based dashboards, and multi-platform API integrations. Improved usability and performance by refining loading states and interaction flows. Collaborated with product and design to refine user journeys and responsive UI behavior; built reusable frontend patterns and component systems. Achieved significant performance gains (FCP from 8.1s to 0.9s; LCP from 10.8s to 2.3s on mobile 4G).

Lead Web Developer at The Drawing Room Creative

June 1, 2013 - February 1, 2016

Led frontend development for client projects, collaborating with design and production teams to deliver responsive, high-quality web experiences. Built and iterated on design systems and component libraries to streamline delivery and ensure consistency across platforms.

Web Developer at Ormskirk Indy Visuals

May 1, 2010 - September 1, 2012

Developed websites and web applications, built frontend interfaces, and optimized performance for diverse client projects.

Junior Web Developer at Liverpool North West Online

April 1, 2009 - September 1, 2010

Assisted in site development, styling, and feature implementation, contributing to early-stage web projects.