Daniel Walmsley is Founder and CTO at Gravity Rail and a seasoned software leader with 14 years of experience building AI-driven systems and large-scale web platforms. At Automattic he served as Principal Architect for AI, designing and shipping customer-facing products including a help chatbot that handles a large portion of support volume, and extracting an open-source SDK (Big Sky Agents) to accelerate cross-product AI integration. He’s an active open-source contributor to high-profile WordPress projects like Jetpack, AMP for WordPress, and wp-calypso, improving backend APIs, AMP integration and front-end UX to better align platform and product needs. Based in Grass Valley, CA, Daniel blends hands-on engineering with product leadership—he moved from theatre producing into CTO roles—and still describes himself as an AI developer who loves robots and coffee, a small clue to his practical curiosity.
Security, performance, marketing, and design tools — Jetpack is made by WordPress experts to make WP sites safer and faster, and help you grow your traffic.
Role in this project:
Back-end Developer
Contributions:1 release, 45 reviews, 1662 commits in 6 years 3 months
Contributions summary:Daniel made several modifications to the Posts API, sharing buttons, and endpoints to improve data formatting and consistency with the WordPress.com platform. They modified PHP code to include boolean flags for reblog, like, and follow status in post data and ensured that these fields were displayed with correct data types. The user also updated API endpoints to use the Site Abstraction Layer (SAL) implementation and refactored the code base.
Contributions:30 reviews, 161 commits, 171 PRs in 6 years 8 months
Contributions summary:Daniel primarily worked on front-end components within the WordPress.com Calypso interface, focusing on the Jetpack connection flow and related features. They implemented and then reverted an A/B test related to Jetpack plans, demonstrating experience with conditional rendering based on A/B test variations. The user also addressed UI issues, such as fixing broken links and adding styling classes for popup windows, and made adjustments to the display of the Jetpack plans.
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