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I'm Jon James, a Senior Frontend Developer and Digital Designer with nearly 15 years of experience designing & building fast, accessible web and mobile experiences. I’ve delivered projects across various different sectors, including e-commerce, fintech, healthcare, government, and non-profit, focusing on performance, accessibility, and scalable design systems. I enjoy mentoring junior developers, leading cross-functional teams, and crafting delightful, WCAG-compliant interfaces. My toolkit includes React, Next.js, GraphQL, and a suite of CSS-in-JS solutions, and I love solving complex UX challenges, including immersive video galleries and multi-platform apps.…I'm Jon James, a Senior Frontend Developer and Digital Designer with nearly 15 years of experience designing & building fast, accessible web and mobile experiences. I’ve delivered projects across various different sectors, including e-commerce, fintech, healthcare, government, and non-profit, focusing on performance, accessibility, and scalable design systems. I enjoy mentoring junior developers, leading cross-functional teams, and crafting delightful, WCAG-compliant interfaces. My toolkit includes React, Next.js, GraphQL, and a suite of CSS-in-JS solutions, and I love solving complex UX challenges, including immersive video galleries and multi-platform apps.

Jon James

Front-End Developer, Web Developer, UI Designer, +2

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I'm Jon James, a Senior Frontend Developer and Digital Designer with nearly 15 years of experience designing & building fast, accessible web and mobile experiences. I’ve delivered projects across various different sectors, including e-commerce, fintech, healthcare, government, and non-profit, focusing on performance, accessibility, and scalable design systems. I enjoy mentoring junior developers, leading cross-functional teams, and crafting delightful, WCAG-compliant interfaces. My toolkit includes React, Next.js, GraphQL, and a suite of CSS-in-JS solutions, and I love solving complex UX challenges, including immersive video galleries and multi-platform apps.…I'm Jon James, a Senior Frontend Developer and Digital Designer with nearly 15 years of experience designing & building fast, accessible web and mobile experiences. I’ve delivered projects across various different sectors, including e-commerce, fintech, healthcare, government, and non-profit, focusing on performance, accessibility, and scalable design systems. I enjoy mentoring junior developers, leading cross-functional teams, and crafting delightful, WCAG-compliant interfaces. My toolkit includes React, Next.js, GraphQL, and a suite of CSS-in-JS solutions, and I love solving complex UX challenges, including immersive video galleries and multi-platform apps.

Available to hire

I’m Jon James, a Senior Frontend Developer and Digital Designer with nearly 15 years of experience designing & building fast, accessible web and mobile experiences. I’ve delivered projects across various different sectors, including e-commerce, fintech, healthcare, government, and non-profit, focusing on performance, accessibility, and scalable design systems.

I enjoy mentoring junior developers, leading cross-functional teams, and crafting delightful, WCAG-compliant interfaces. My toolkit includes React, Next.js, GraphQL, and a suite of CSS-in-JS solutions, and I love solving complex UX challenges, including immersive video galleries and multi-platform apps.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

German

Intermediate

Work Experience

Senior Frontend Developer (Contract)

August 1, 2024 - October 1, 2025

Worked on a new Next.js site (app router) and Storybook UI component library, in conjunction with Builder.io CMS to create a unified branding site for internal products. Also helped build a custom per-test mocking solution in Cypress for components/pages that fetch data server-to-server.

Frontend Developer (Contract)

May 1, 2024 - July 1, 2024

Contract for Ascential Digital Marketing AI (May 2024 – Jul 2024) to contribute to a multi-brand ecommerce project.

Frontend Developer (Contract)

November 1, 2023 - April 1, 2024

Greenfield fintech credit product; senior consultant to train in-house team on Next.js (app router) and React best practices; responsible for setting up authentication for the main fintech web app.

Frontend Developer (Contract) at Aveni AI Data Analytics

August 1, 2023 - September 1, 2023

Contract work (Aug 2023) for data analytics project (1 month).

Frontend Developer at Defence Digital

October 1, 2022 - July 1, 2023

React app for deployment tracking; contributed to multi-platform app for Defence Digital and Royal Navy, built with Expo, React Native and Next.js; used Solito for cross-platform routing; offline functionality designed for Navy network contexts.

Frontend Developer at N Brown Group

July 1, 2022 - September 1, 2022

React app built on observer architecture with D3.js for data analytics.