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Hi, I’m Guillermo Sánchez. I’m a Product and UX/UI designer with eight years of experience, focused on scaling design within complex environments for web applications and SaaS. I enjoy collaborating in multidisciplinary teams and have delivered strategic design and business solutions for companies like Prezero, Cepsa, Ferrovial, and Engie. I’m passionate about making great design visible and rely on research techniques such as customer journeys, user interviews, surveys, usability testing, and A/B testing to inform decisions. I design using user-centered principles across end-to-end projects—from research and ideation to prototyping, testing, and implementation.…Hi, I’m Guillermo Sánchez. I’m a Product and UX/UI designer with eight years of experience, focused on scaling design within complex environments for web applications and SaaS. I enjoy collaborating in multidisciplinary teams and have delivered strategic design and business solutions for companies like Prezero, Cepsa, Ferrovial, and Engie. I’m passionate about making great design visible and rely on research techniques such as customer journeys, user interviews, surveys, usability testing, and A/B testing to inform decisions. I design using user-centered principles across end-to-end projects—from research and ideation to prototyping, testing, and implementation.

Guillermo Sánchez

Product Designer, UX Designer, UI Designer, +2

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Hi, I’m Guillermo Sánchez. I’m a Product and UX/UI designer with eight years of experience, focused on scaling design within complex environments for web applications and SaaS. I enjoy collaborating in multidisciplinary teams and have delivered strategic design and business solutions for companies like Prezero, Cepsa, Ferrovial, and Engie. I’m passionate about making great design visible and rely on research techniques such as customer journeys, user interviews, surveys, usability testing, and A/B testing to inform decisions. I design using user-centered principles across end-to-end projects—from research and ideation to prototyping, testing, and implementation.…Hi, I’m Guillermo Sánchez. I’m a Product and UX/UI designer with eight years of experience, focused on scaling design within complex environments for web applications and SaaS. I enjoy collaborating in multidisciplinary teams and have delivered strategic design and business solutions for companies like Prezero, Cepsa, Ferrovial, and Engie. I’m passionate about making great design visible and rely on research techniques such as customer journeys, user interviews, surveys, usability testing, and A/B testing to inform decisions. I design using user-centered principles across end-to-end projects—from research and ideation to prototyping, testing, and implementation.

Available to hire

Hi, I’m Guillermo Sánchez. I’m a Product and UX/UI designer with eight years of experience, focused on scaling design within complex environments for web applications and SaaS.

I enjoy collaborating in multidisciplinary teams and have delivered strategic design and business solutions for companies like Prezero, Cepsa, Ferrovial, and Engie.

I’m passionate about making great design visible and rely on research techniques such as customer journeys, user interviews, surveys, usability testing, and A/B testing to inform decisions.

I design using user-centered principles across end-to-end projects—from research and ideation to prototyping, testing, and implementation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Work Experience

Product designer and UX/UI Designer at Visual Technology Lab (VT-Lab)

December 20, 2024 - December 20, 2024

Designed end-to-end UX/UI for a SaaS platform across Web, Mobile, and Desktop from research to implementation, achieving an 80% adoption rate. Redesigned and launched over 20 digital products for clients such as Prezero, Cepsa, Ferrovial, and Engie. Created high-fidelity mockups, design assets, flows and wireframes; conducted research, user studies, and feedback analysis to identify problems and solutions. Optimized the user experience, reducing usability errors by 30%. Built a scalable design system in Figma, reducing design and development time by 35%. Led the corporate website redesign in collaboration with business and marketing teams, improving loading speed by 30%.

Freelance UX/UI Designer at Various Clients (Madrid)

July 1, 2016 - October 27, 2025

Designed and developed websites fully tailored to client needs, managed projects end-to-end, and presented strategic results to internal teams and end clients.