Guillermo Ermel

Product Manager & Senior UX researcher @ Proper Technologies Inc.
Former UX research lead, 20+ years experience
Netherlands 5.0 (2 reviews) Active last month


$120 / month

I specialize in young professionals committed to their personal and professional growth.

Regular calls, per agreement

Unlimited Q&A via chat

Expect responses in 24 hours or less

Hands-on support

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Are you ready to challenge your assumptions, to engage in an honest conversation about your professional fears and desires? Together, we'll come up with a step by step action plan to develop the resources that will take you to achieve what truly matters to you.

Be it your next interview, a career change or a difficult UX or product design project you want to tackle, I'll be by your side to help you grow.

I have a solid track record of coaching almost a hundred professionals. I taught courses and workshops at top institutes and universities in South America and The Netherlands.

I've led UX research projects in e-commerce, fintech, travel, agrotech, and other industries in Argentina, the Netherlands, and the United States for well over a decade, specializing in IT products at fast-paced companies like Mercado Libre (e-commerce marketplace, 300+ MM users) and Despegar (travel, 17MM users).

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What mentees say



5 out of 5 stars

Standard Plan · 
6 months

I'm incredibly fortunate to have Guillermo as my mentor on my UX design journey. His expert guidance and experience of over 20+ years have been pivotal in shaping my portfolio and design mindset. Guillermo skillfully helped me create a robust research plan and method, setting the foundation for successful projects. His insights refined my interview pitch, enhancing my interactions and data collection. What's truly remarkable is Guillermo's ability to foster collaboration and empowerment. Their constructive feedback fueled my growth and creativity, leading to a portfolio I'm immensely proud of. Beyond projects, Guillermo shared real-world wisdom and resources, expanding my perspective. Their mentorship is transformative, emphasizing empathy and lifelong learning in UX design and research. In summary, Guillermo is an exceptional mentor who blends expertise with genuine care. If you're seeking impactful UX mentorship, I wholeheartedly recommend Guillermo.



5 out of 5 stars

Standard Plan · 
1 month

I love the work that Guillermo does as a mentor, from the beginning I could see that he cares about helping me discover my true worth and is helping me to develop it further, and all this based on a real appreciation of the situation and your talents.

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