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I'm a Senior Frontend Engineer with 10+ years of experience turning ambiguous or legacy systems into reliable, well-built platforms. My background spans agency-side consultancy and hands-on product delivery, working across React, TypeScript, Next.js, NodeJS, APIs. I've led frontend delivery on multi-million-pound programmes for major brands including Next, Screwfix, and The Gym Group — collaborating with cross-functional teams of designers, product leads, and backend engineers to de-risk delivery and ship at scale. I'm equally comfortable as an individual contributor or technical lead: setting architecture standards, mentoring engineers, and modernising legacy codebases into maintainable, well-tested systems. Recent work includes migrating a legacy PHP application to Next.js, leading full internationalisation efforts, and improving Lighthouse performance scores from 45 to 92. I care about accessibility, testing (Jest, Cypress, Playwright), and building design systems that scale across teams. Based in Newcastle Upon Tyne, available for frontend and backend.…I'm a Senior Frontend Engineer with 10+ years of experience turning ambiguous or legacy systems into reliable, well-built platforms. My background spans agency-side consultancy and hands-on product delivery, working across React, TypeScript, Next.js, NodeJS, APIs. I've led frontend delivery on multi-million-pound programmes for major brands including Next, Screwfix, and The Gym Group — collaborating with cross-functional teams of designers, product leads, and backend engineers to de-risk delivery and ship at scale. I'm equally comfortable as an individual contributor or technical lead: setting architecture standards, mentoring engineers, and modernising legacy codebases into maintainable, well-tested systems. Recent work includes migrating a legacy PHP application to Next.js, leading full internationalisation efforts, and improving Lighthouse performance scores from 45 to 92. I care about accessibility, testing (Jest, Cypress, Playwright), and building design systems that scale across teams. Based in Newcastle Upon Tyne, available for frontend and backend.

Isaac Shek

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

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I'm a Senior Frontend Engineer with 10+ years of experience turning ambiguous or legacy systems into reliable, well-built platforms. My background spans agency-side consultancy and hands-on product delivery, working across React, TypeScript, Next.js, NodeJS, APIs. I've led frontend delivery on multi-million-pound programmes for major brands including Next, Screwfix, and The Gym Group — collaborating with cross-functional teams of designers, product leads, and backend engineers to de-risk delivery and ship at scale. I'm equally comfortable as an individual contributor or technical lead: setting architecture standards, mentoring engineers, and modernising legacy codebases into maintainable, well-tested systems. Recent work includes migrating a legacy PHP application to Next.js, leading full internationalisation efforts, and improving Lighthouse performance scores from 45 to 92. I care about accessibility, testing (Jest, Cypress, Playwright), and building design systems that scale across teams. Based in Newcastle Upon Tyne, available for frontend and backend.…I'm a Senior Frontend Engineer with 10+ years of experience turning ambiguous or legacy systems into reliable, well-built platforms. My background spans agency-side consultancy and hands-on product delivery, working across React, TypeScript, Next.js, NodeJS, APIs. I've led frontend delivery on multi-million-pound programmes for major brands including Next, Screwfix, and The Gym Group — collaborating with cross-functional teams of designers, product leads, and backend engineers to de-risk delivery and ship at scale. I'm equally comfortable as an individual contributor or technical lead: setting architecture standards, mentoring engineers, and modernising legacy codebases into maintainable, well-tested systems. Recent work includes migrating a legacy PHP application to Next.js, leading full internationalisation efforts, and improving Lighthouse performance scores from 45 to 92. I care about accessibility, testing (Jest, Cypress, Playwright), and building design systems that scale across teams. Based in Newcastle Upon Tyne, available for frontend and backend.

Available to hire

I’m a Senior Frontend Engineer with 10+ years of experience turning ambiguous or legacy systems into reliable, well-built platforms. My background spans agency-side consultancy and hands-on product delivery, working across React, TypeScript, Next.js, NodeJS, APIs.

I’ve led frontend delivery on multi-million-pound programmes for major brands including Next, Screwfix, and The Gym Group — collaborating with cross-functional teams of designers, product leads, and backend engineers to de-risk delivery and ship at scale. I’m equally comfortable as an individual contributor or technical lead: setting architecture standards, mentoring engineers, and modernising legacy codebases into maintainable, well-tested systems.

Recent work includes migrating a legacy PHP application to Next.js, leading full internationalisation efforts, and improving Lighthouse performance scores from 45 to 92. I care about accessibility, testing (Jest, Cypress, Playwright), and building design systems that scale across teams.

Based in Newcastle Upon Tyne, available for frontend and backend.

Skills

Experience Level

Expert

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Work Experience

Web Developer (Contract) at True Jesus Church

February 1, 2024 - Present

Migrated a legacy PHP application to a modern Next.js architecture, improving performance, scalability, and long-term maintainability. Re-engineered core frontend flows with React and TypeScript to reduce bundle size and speed up load times. Led end-to-end internationalisation with Next-Intl, delivering multi-language support and a scalable localisation framework. Introduced reusable UI components and improved state management, boosting code consistency and reducing duplication. Implemented accessibility and performance best practices, improving Lighthouse scores.

Senior Frontend Consultant at Ensono Digital

October 1, 2020 - June 1, 2025

Led frontend delivery across multi-million-pound programmes for Next, Screwfix, and The Gym Group, collaborating with cross-functional teams of 10+ engineers, designers, and product leads. Defined frontend architecture standards, including component library governance, code quality guidelines, and CI/CD workflows, improving developer experience and onboarding. Provided mentorship and engaged in pair programming to cultivate a high-performing team. Introduced performance profiling, bundle-splitting strategies, and caching improvements, reducing JavaScript payload size by 20–40%. Worked with product and UX to translate complex requirements into clear technical plans and collaborated with backend teams to design secure, scalable API contracts and improve reliability across distributed systems.

Frontend Consultant at Ensono Digital

February 1, 2019 - October 1, 2020

Partnered with clients, product teams, and UX/UI designers to deliver cohesive, user-centered solutions and translate complex requirements into technical implementations. Modernised legacy codebases by introducing React/TypeScript patterns, reusable components, and improved state management. Worked in agile squads, supporting sprint planning, backlog refinement, and cross-functional problem-solving. Implemented automated testing using Jest and Cypress, improving release confidence and reducing regression issues. Provided guidance to junior developers through pair programming and code reviews.

JavaScript Developer at Edinburgh Airport

September 1, 2017 - January 1, 2019

Led frontend development, integrating web components, unit tests, and end-to-end testing. Collaborated with the team to identify solutions and anticipate potential challenges.

Web Developer at TalkTalk

October 1, 2015 - September 1, 2017

Led the feature team in delivering two releases, integrating a rebrand and new functionalities. Mentored team members, fostering skill development and best practices.