I am a passionate Tech Leader. I am a fanboy of Lean, Extreme Programming, Scrum, Domain-Driven Design, and DevOps mindsets with more than 20 years of experience. I have played various leading roles, such as Tech Lead, VP of Engineering, CTO, and even CEO. I have mentored engineering and product teams of up to 200 members in different markets (E-commerce, E-Learning, Payment Processing, Classifieds, Recruiting Market, Supply Chain, and Shared Mobility), in various distributed locations, and multiple company sizes (Start-ups, Established Companies, and Multinational Companies). As a consultant in my own company, Rigor Guild, I have contributed to the success of start-ups and well-established brands. Some examples are Atrápalo, PCComponentes, Emagister, Cashconverters, Enreach, Opositatest, eBay, PlanetaHuerto, Lowpost, Vendo, Riplife, Omatech, Techpump, and many more. I am also the author of the book "Domain-Driven Design in PHP" (https://leanpub.com/ddd-in-php) and "CQRS By Example" (https://leanpub.com/cqrs-by-example).