Mario Vivas
Founder and Chief Education Officer

Mario Vivas is an ITIL v3 ITIL Expert with proficiency in Project Management with Systems Development Life Cycle (SDLC). He has a deep understanding of Change Management and Organizational Behaviour in order to effect positive growth of the business.


Mario has helped numerous organizations define and mature their Service Delivery Methodologies. This includes the suite of documentation templates for all process team disciplines.


Mario is an active Senior Education Advisor who can teach over 8 official ServiceNow courses. He has facilitated over 50 classes including in Toronto, Chicago, Phoenix, San Diego, San Francisco, London, and at the ServiceNow Knowledge conferences. 

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David Clarkson
Senior Education Advisor

David Clarkson has been a developer and architect in the ServiceNow community for six years and in ITSM for over 15 years.

With more than 20 implementations under his belt, his experience includes custom scoped application development for federal agencies, several large-scale ITSM implementations, integrations via all of ServiceNow’s platform APIs, Demand Management and Project management deployments.

David is excited to use his training, technical background and real-world experience as a Senior Education Advisor with River Horse. 

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Carol Service
Education Advisor

Carol Service has been a Human Resources and Training specialist for over 10 years. 

She has provided training for IT Service Support with a variety of software and industry standards.  Carol has been working with the ServiceNow platform since 2010.

She's excited to share her experience and expertise as an Education Advisor as part of the River Horse team.

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Shelby Nelson
Senior Education Advisor

Shelby Nelson has been a ServiceNow Developer and Administrator for over five years as well as a Systems Analyst and Developer in many other languages and platforms for over twenty years.


He has been a lead consultant on several key projects across many industries developing, ServiceNow applications such as ITSM, Service Portfolio, Software/Hardware Asset, Discovery, Orchestration, Customer Service Management, and SecOps. 


Shelby has developed a strong interest for teaching certified ServiceNow courses and enjoys sharing his knowledge and experiences of the platform with students.

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Joanna Anderson
Education Advisor

Joanna Anderson has been a ServiceNow Application Developer for the past 8 years. She has extensive experience implementing and building on the platform with a focus on Custom Application Development.


She has a passion for teaching and empowering ServiceNow developers to take their skills to the next level. With her love of ServiceNow, problem solving, ITIL Foundations, and Scaled Agile training, she is excited to take her hands on experience to the next level as an Education Advisor with the River Horse team.