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  Thomas 730 says,

  I will certainly be working with Sergio at JCML Professional Services again. He was consistently professional, smart, prompt and resourceful as we navigated a path through distributors and online vendors. He is that rare freelancer who protects his clients' interests like they were his own.

  for amazon store management on May 20, 2019

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  Thomas 730 says,

  Sergio of JCML has been invaluable to the long process of successfully posting my book on Amazon (and other distribution channels). Unlike many freelancers, he has taken a long-term perspective, protecting my interests at every juncture. Sergio is professional, prompt, smart, and loyal. I will definitely be calling on his expertise again. Highest rating. A+

  for amazon store management on May 15, 2019

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  Thomas 730 says,

  Sergio at JCML is one of those rare freelancers who treats your business like his own. He was prompt, thorough, pro-active, and thoughtful in all his dealings. He protected my interests as we navigated the world of Amazon ads and social media -- you could not have a better ally and colleague. Highest recommendation!!

  for amazon store management on Apr 30, 2019

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  Thomas 730 says,

  Sergio is professional, smart, responsive and thorough. A pleasure to work with --

  for amazon store management on Mar 26, 2019

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  Jan 25 says,

  Sergio will complete your project to your satisfaction

  for creation of print book on Jan 30, 2017

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