Ruth Farrell CV

Senior Web Developer -

November 2024 - Current Sydney

Owned engineering delivery for HubSpot’s business-critical homepage www.hubspot.com and global navigation, high-traffic surfaces viewed by millions of users worldwide.
Built scalable, performant front-end components using JavaScript (vanilla/ES6), React, TypeScript, Hubl, HTML, Rest APIs and CSS ensuring accessibility and maintainability.
Improved Core Web Vitals and reduced homepage load time from 6.4 to 4.8s through above-the-fold optimisation, code splitting, and improved data-loading patterns.
Introduced Cypress E2E testing in key repos, designed Node.js and serverless solutions and managed webhook-driven, and workflow automated integrations.
Designed and implemented a server-side A/B test that delivered a 9% uplift in free sign-ups with 99.9% statistical confidence.
Developed reusable CMS-driven templates and components in Hubl and JavaScript, enabling faster iteration across marketing surfaces.
Collaborated closely with designers (Figma), PMs, and cross-functional engineering teams to deliver pixel-perfect UI.
Performed complex debugging and root-cause analysis across multiple repos and systems, improving platform stability.
Mentored developers through code reviews, and provided technical guidance raising engineering standards across teams.
Experienced in using Cursor and AI-assisted development tools to speed up implementation, improve code quality, and streamline repetitive tasks.

July 2022 - November 2024 Dublin/Sydney

Worked closely with cross-functional teams in an Agile environment to deliver high-quality features and iterate quickly based on feedback.
Developed user-focused front-end features across HubSpot’s global marketing pages.
Built and enhanced components in React and Hubl, contributing to shared assets such as the multi-step form and reusable CMS modules.
Translated Figma designs into accessible, SEO/AEO-friendly pages, ensuring strong UI quality and attention to detail.

May 2020 - July 2022 Dublin

Resolved development issues on customers' websites (JS, HTML, CSS, React), partnering with Engineering on platform bugs and process improvements. Published articles and led training.
Developed and maintained key tools, including the Support team's Chrome Extension (Jade, JS).

October 2018 - May 2020 Dublin

Guided clients migrating websites from platforms like WordPress, Wix etc. to HubSpot. Resolved JS, HTML, CSS and DNS issues.

August 2017 - September 2018 Dublin

Exceeded the daily target of web design cases and maintained an NPS of above 80. Recipient of Customer Experience Award.

October 2015 - October 2016 Dublin

Provided technical support via email, phone and in-person at conferences. Presented training webinars to over 200 attendees monthly.