Highly skilled React front-end developer and solution architect with a strong track record delivering large-scale, performance-focused applications across Agile and Kanban teams. Experienced leading chapters/teams, mentoring junior developers, and partnering with stakeholders to define and deliver epics, stories, and test strategies. Deep expertise across modern JavaScript/TypeScript frameworks (React, Next.js), automated testing (Jest/React Testing Library/Cypress/Playwright), and CI/CD pipelines. A strong focus on accessibility (WCAG), security-minded delivery, and improving speed, quality, and maintainability in production environments.

Rob Cornelius

Highly skilled React front-end developer and solution architect with a strong track record delivering large-scale, performance-focused applications across Agile and Kanban teams. Experienced leading chapters/teams, mentoring junior developers, and partnering with stakeholders to define and deliver epics, stories, and test strategies. Deep expertise across modern JavaScript/TypeScript frameworks (React, Next.js), automated testing (Jest/React Testing Library/Cypress/Playwright), and CI/CD pipelines. A strong focus on accessibility (WCAG), security-minded delivery, and improving speed, quality, and maintainability in production environments.

Available to hire

Highly skilled React front-end developer and solution architect with a strong track record delivering large-scale, performance-focused applications across Agile and Kanban teams. Experienced leading chapters/teams, mentoring junior developers, and partnering with stakeholders to define and deliver epics, stories, and test strategies.

Deep expertise across modern JavaScript/TypeScript frameworks (React, Next.js), automated testing (Jest/React Testing Library/Cypress/Playwright), and CI/CD pipelines. A strong focus on accessibility (WCAG), security-minded delivery, and improving speed, quality, and maintainability in production environments.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Lead Front End Developer at IBM
May 1, 2026 - August 31, 2026
Lead work on a major classified project for the UK Border Security arm of the Home Office. Delivered and supported front-end development using TypeScript/JavaScript and React, with a strong emphasis on automated testing, accessibility checks (Axe), performance auditing (Lighthouse), and modern DevOps practices using Docker, Kubernetes, and CI/CD pipelines.
Senior Front End Developer / Solution Architect at CACI Ltd.
January 1, 2023 - August 1, 2025
Maintained, rewritten and added new features to an existing React app. Created a test framework and integrated unit, component, visual regression and end-to-end tests using Jest/Vitest, React Testing Library, Mock Service Worker, Storybook and Playwright; achieved a 200% speed boost in the codebase prior to Next.js integration; ensured WCAG 2.2 compliance with Storybook and Axe; added internationalization. Acted as Scrum Master, collaborated with stakeholders to define Epics/Stories, mentored junior developers, and supported QA in transitioning to Playwright.
Senior Front End Developer at Navenio Ltd
October 1, 2020 - December 1, 2023
Taking ownership of an MVP codebase, optimizing React code for performance and maintainability; defined architecture for a flagship product; created unit, component and end-to-end tests; built REST endpoints in Express connected to Postgres; added Node and Webpack build processes in GitHub Actions with Docker/Kubernetes; participated in stand-ups, planning, and recruitment.
Senior Front End Developer at Oracle Corp
March 1, 2017 - October 1, 2020
Created Oracle JET-based applications, migrated Oracle Jet apps to React, built REST endpoints in Express/Nginx, integrated AI/ML endpoints, and developed monitoring dashboards; integrated front-end build/test processes into Jenkins pipelines; mentored junior developers and contributed to Agile practices including Scrum Master accreditation.
Front End Developer at Pharmiweb (contract)
June 1, 2015 - July 31, 2015
Created basic layouts and content for presentation materials.
Front End Developer (Contract) at Pharmiweb
June 1, 2015 - July 1, 2015
Created very basic layouts and content for presentation materials as a short-term engagement.
Senior Front End Developer at DigitasLBi
June 1, 2015 - January 1, 2017
Maintained and extended gucci.com; created new layouts and features; built a unit test framework with Jest and integrated into a Grunt-based build system.
Front End Developer at Quantel
April 1, 2013 - July 1, 2015
Architected browser-based front ends for video editing and management systems; evaluated front-end libraries; wrote Express/Node REST endpoints using Postgres/MySQL; added Grunt/Jenkins tasks for build pipelines.
Front End Developer at PassivSystems
December 1, 2010 - April 1, 2013
Created web-based monitoring dashboards; used Python and Selenium for end-to-end/smoke tests; continued front-end development.
Front End Developer at First Assist Insurance Services (contract)
April 1, 2010 - December 31, 2010
Maintained and added features to an existing PHP application. Added customer styling for a white-label product.
Front End Developer (Contract) at First Assist Insurance Services
April 1, 2010 - December 1, 2010
Maintained and added features to an existing PHP application; implemented white-label styling.
Front End Developer / UX designer at Lexis Nexis (contract)
January 1, 2010 - February 28, 2010
Worked on a portal concept intended to unify Lexis Nexis sites (project later abandoned).
Front End Developer (Contract) at Lexis Nexis
January 1, 2010 - February 1, 2010
Created a portal for LexisNexis sites; initial frontend work.
Front End Developer at BBC (contract)
November 1, 2009 - February 28, 2010
Created layouts and features for the Doctor Who site.
Front End Developer (Contract) at BBC
November 1, 2009 - February 1, 2010
Created layouts and features for the Doctor Who site.
Web Developer / UX designer at Qualcomm (contract)
January 1, 2009 - September 30, 2009
Extended and developed a web-based front-end for a basic app store for older phones; built using Dojo/JSP and related XML/HTML workflows.
Front End Developer (Contract) at Qualcomm
January 1, 2009 - September 1, 2009
Front-end for app store interfaces; worked with Dojo and JSP.
Senior Web Developer at Lightcurve (contract)
August 1, 2008 - December 31, 2008
Assisted a friend’s company by creating online learning materials.
Front End Developer (Contract) at Lightcurve
August 1, 2008 - December 1, 2008
Created online learning materials as a web front-end developer on contract.
Web Developer at Patersons (contract)
May 1, 2008 - September 30, 2008
Maintained and extended the front-end of an existing JSP-based application and the company website.
Front End Developer (Contract) at Patersons
May 1, 2008 - September 1, 2008
Frontend development on contract tasks.
Web Develop / Webmaster at Ingenta
March 1, 2004 - March 31, 2008
Created and added new features to the front-end of a JSP application and introduced AJAX when it was new.
Front End Developer at Ingenta
March 1, 2004 - March 1, 2008
Created and added features to a JSP-based front end; introduced AJAX enhancements.
Webmaster at Pulse Interactive Publishing
May 1, 2003 - March 31, 2004
Developed a PHP-based recruitment agency application and web assets for online schemes.
Web Developer / UX Designer (Contract) at Pulse Interactive Publishing
May 1, 2003 - March 1, 2004
Maintained and extended web materials; contributed to front-end layouts and UX.
Webmaster at Cannington Colledge
September 1, 1997 - March 31, 2003
Created and maintained the college website and online learning materials; supported student pastoral care and served as a qualified bouncer.
Web Developer / Webmaster at Cannington College
September 1, 1997 - March 1, 2003
Created and maintained college website, online learning materials; other duties.

Education

BSc. Computing and IT at The Open University
January 1, 1997 - January 1, 2001
BSc. Environmental Science at Plymouth University
January 1, 1988 - January 1, 2001
BSc. Computing and IT at The Open University
January 1, 1997 - January 1, 2001
BSc. Environmental Science at Plymouth University
January 11, 2030 - August 17, 2026

Qualifications

Oracle Scrum Master accreditation
January 11, 2030 - December 18, 2025
Oracle Docker and Kubernetes accreditations
January 11, 2030 - December 18, 2025

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Education, Government, Computers & Electronics, Financial Services