Liam Rothwell – Founder & Web Performance Engineer
London, UK
Liam is the creator of Waterfaller.dev and a veteran in performance analytics.
He writes weekly deep-dives into Core Web Vitals, HTTP optimization, and emerging browser metrics.
Before launching Waterfaller.dev, he worked as a frontend consultant for e-commerce brands across Europe and contributed to the Lighthouse project community.
Sofia Mendez – Data Visualization & UX Metrics Analyst
Barcelona, Spain
Sofia transforms complex data sets into visual stories.
With a background in interaction design and product analytics, she focuses on how users perceive speed — not just how we measure it.
Her dashboards and performance visualizations make it easier for teams to connect technical metrics with real-world usability.
Arjun Mehta – Backend Systems & Web Standards Researcher
Bangalore, India
Arjun studies how network infrastructure and backend architecture affect user experience.
He has contributed to open-source projects improving server-side rendering (SSR) and CDN caching logic.
At Waterfaller.dev, he publishes technical notes on server timing headers, caching strategies, and the intersection of SEO and DevOps.
Mara Johansson – Technical Editor & Content Strategist
Stockholm, Sweden
Mara ensures that every article meets our editorial standards: accuracy, clarity, and impact.
She previously worked with Search Engine Land and TechRadar, specializing in translating complex performance reports into content that decision-makers understand.
