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RATIONAL USA Hires Three New Corporate Chefs

"Strengthening our team ensures that end users receive the highest level of customer satisfaction." says Billy Buck, VP of Culinary.

By Sponsored Content | August 29, 2025

RATIONAL USA recently announced several additions and promotions:

  • Viviana Martinez, Corporate Chef – iCombi, Central region. 
  • Charlene Doan, Corporate Chef – iVario, West region. 
  • Christian Kearns, previously Regional Sales Manager, is now Corporate Chef – iCombi, Mountain region. 

“Welcoming these remarkable chefs to RATIONAL’s culinary team marks an exciting step forward. Their knowledge will elevate both our innovation and support. Strengthening our team ensures that end users receive the highest level of customer satisfaction—because at RATIONAL, ‘Better is all we know,’” says Billy Buck, VP of Culinary.

This change brings the RATIONAL USA culinary team to 18 total members.

About RATIONAL

RATIONAL is the global leader in intelligent cooking systems, dedicated to delivering innovative solutions that redefine the commercial kitchen. Founded in 1973, the company employs over 2,700 people worldwide. RATIONAL is listed on the Prime Standard of the German Stock Exchange and is included in the SDAX.

To learn more about RATIONAL products and services, attend a RATIONAL Live event to see how we help commercial kitchen operators do more with less space, waste, energy, cost, and stress. 

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RATIONAL USA’s Daniel Lessem Named One of IDDBA’s Champions of Change for 2025
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Search Club + Resort Chef

  • Home
  • Clubs
  • Resorts
  • Recipes
  • Certification
  • 40 Under 40
    • Chef Nominations
    • Class of 2025
    • Class of 2024
    • Order: Commemorative Plaque
  • Documentaries
    • Watch: Inside Ocean Reef
    • Watch: All Ships Rise
  • Resources
    • Master Class
    • Chef to Chef
    • C+R Talks
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    • C+RC Association
    • Digital Issues
    • Submit Industry News
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