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Guillermo S. has a diverse range of work experience in various roles and companies. Guillermo currently works at Immunefi as an Engineering Manager. Prior to this, they were a Senior Backend Engineer and Team Lead at Everly Health, where they played a key role in upgrading a Ruby on Rails application and led a team of four engineers. Guillermo also helped design and implement an integration with a third-party vendor, resulting in significant cost savings.

Before joining Everly Health, Guillermo was a Co-founder and CTO at Tandem, where they managed the application fork and facilitated the transition from B2C to B2B. Guillermo also maintained the Ruby on Rails backend, React frontends, and Kotlin mobile app. Guillermo helped build a cash flow positive business before transferring the company to new owners.

Prior to Tandem, Guillermo served as a CTO at Aliada MX, where they built the V2 of the marketplace for cleaning services from scratch and led a product team of five senior engineers. Guillermo also worked as an External Developer at Crowd Interactive, CTO at Bebitos.mx, and Co-founder and CTO at Bandtastic.

Earlier in their career, Guillermo worked as a Software Developer at Responsive Labs, a Software Consultant at ActivaMente, and a Systems Administrator at the Laboratorio de cómputo de la Universidad de Guanajuato. At the university, they maintained the computers lab and developed software to automate various tasks across different operating systems.

Overall, Guillermo brings a wealth of experience in engineering and leadership roles, with a strong focus on building successful businesses and delivering high-quality solutions.

From 2006 to 2009, Guillermo S. attended Universidad de Guanajuato, where they pursued a field of study in Graphic Design. Following this, from 2009 to 2011, they enrolled at the same university and earned a degree in Sistema de Información Administrativa.