Harry is an award-winning Consultant Performance Engineer from the UK. With a client list ranging from the United Nations to Google, the BBC to the Financial Times, he has helped some of the world’s largest organisations make their websites faster.

He also holds positions as a Google Developer Expert, where he shares web performance research and findings, and as Performance Ambassador for SHIFT Commerce, where he aims to make ecommerce faster from the inside out.

He writes about all things front-end performance at csswizardry.com, speaks at tech events all across the globe, and regularly shares his insights at @csswizardry.

Robin is a Domain Architect at Klarna, creating the future of online shopping.

He started with CSS during the Responsive revolution, moved to JavaScript just when React dropped, and now applies DDD principles to 15+ teams.
 
Being a functional programming proponent, Robin explored Elm, Reason, and functional TypeScript with fp-ts, trying to find the sweet spot of developer productivity and scalability.

Currently undergoing another career shift, Robin looks into topic about technical leadership, software architecture, and serverless infrastructure.

Robin organises several meetups: he co-founded Frontendisti.cz group and runs React Berlin. He also shares his findings on his blog, in podcasts, and in his talks.