Trusted by leading brands
For over 4 years, more than 35 clients have trusted me to improve their web performance.
International luxury house specializing in fashion, beauty, and accessories
Iconic French luxury brand known for fashion, perfumes, and beauty
World leader in sports retail offering equipment accessible to all
French agricultural cooperative group bringing together major dairy brands
Specialized insurer for two-wheelers and mobility
North American subscription-based radio and audio streaming platform, market leader in satellite radio
International cosmetics brand specializing in makeup
Inclusive cosmetics brand founded by Rihanna
French house of professional makeup for artists and the general public
French e-commerce retailer committed to responsible consumption and made in France
German brand of high-end luggage and suitcases
French eyewear brand combining contemporary design, accessibility, and social commitment.
Brand of scented candles combining jewelry and sensory experience
Home services platform connecting individuals and professionals
Digital agency supporting international brands
Luxury perfume house founded by perfumer Francis Kurkdjian
The most hammering agency in France, expert in e-commerce site creation and digital strategy.
E-commerce platform dedicated to professionals and individuals in the veterinary sector
E-commerce site specializing in major golf brands at discounted prices
E-commerce site specialized in selling brand-name products at discounted prices
Brand of handcrafted jewelry inspired by the ocean and nature
Online media specializing in DIY and painting tips
School specialized in training for cybersecurity professions
School dedicated to the professions of video games and esports
Specialist in luxury villa rentals and high-end travel experiences
Online training for digital professions
Online sale of solar panels and installations for individuals
French web host and cloud infrastructure provider
International media group specializing in the publishing of high-traffic websites
Local and regional news media
Sports media specializing in football and international news
Agency and media group specialized in digital advertising
Entrepreneurial and business media for professionals
Platform dedicated to SEO and link building
Consulting agency and integration of management solutions
Digital agency specialized in communication and brand strategy
Creative agency supporting brands in their digital strategy
Communication and consulting agency for businesses
Web performance is never an abstract topic. It comes down to very concrete details: unnecessary lines of JavaScript, poorly structured CSS, a critical resource loaded at the wrong time. That’s precisely where I step in. I support teams and companies for whom speed, stability and reliability are non-negotiable, because they directly impact brand image, conversion and user experience. In short, I turn milliseconds into millions.
My job is to go where automated tools stop. I analyze the code actually executed, critical rendering paths, and technical debt accumulated over product iterations. In-depth CSS audits, JavaScript refactoring without functional regression, resource loading optimization, Core Web Vitals improvement in real conditions: every recommendation is designed to be actionable, measurable and compatible with sometimes complex existing environments.
If clients like Dior, Chanel or SiriusXM have trusted me, it’s not to apply cookie-cutter solutions. It’s to work on high-visibility projects with demanding quality, security and maintainability requirements. On these types of engagements, performance cannot be treated as an afterthought: it must be integrated into the architecture, development cycle and structural technical choices.
I regularly work on CMS and e-commerce platforms from WordPress to SFCC, including highly customized contexts. My role is to identify what’s actually slowing down the site: unnecessary but critical scripts, over-abstracted components, poorly optimized third parties, or legacy choices that now penalize performance.
Beyond technical intervention, I place great importance on knowledge transfer. An audit or refactoring only has value if it’s understood, owned and maintainable by the teams. I explain the trade-offs, prioritize actions, and build recommendations that account for ground realities: deadlines, internal skills, organizational constraints.
If you’re looking to understand who Paul Delcloy is, the answer might lie in this simple idea: I don’t optimize scores, I optimize systems. And when performance becomes a strategic lever rather than a cosmetic metric, results follow naturally.
Ready to boost your performance?
Data 2023-2025