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Leff Management CONSULTING
Home
Services
Contact Us
LinkedIn
Gallery
Blog
More
  • Home
  • Services
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Our Services

Sales enablement & field activation

  Frameworks, training, value‑based messaging

Partner ecosystem activation

 MSP/MSSP, resellers, alliances, co‑selling motions 

Cloud GTM strategy & execution

 AWS, Azure, marketplace, consumption models 

Services growth acceleration

Renewals, premium offers, lifecycle services, XDR/CNAPP

Program management for complex initiatives

Offer readiness, cross‑functional alignment 

Mark Leff's accomplishments

Built and led a new Sales Enablement practice at Fidelis Cybersecurity, delivering coaching, readiness assessments, and methodology adoption that contributed to 30% YoY growth.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Built and led a new Sales Enablement practice at Fidelis Cybersecurity, delivering coaching, readiness assessments, and methodology adoption that contributed to 30% YoY growth.

Doubled services revenue at Exclusive Networks NA in one year and scaled the business from $300M to $900M, driven by structured enablement and specialist/partner activation.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Built and led a new Sales Enablement practice at Fidelis Cybersecurity, delivering coaching, readiness assessments, and methodology adoption that contributed to 30% YoY growth.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Increased Cisco Network Optimization Services bookings from $600M to $1B, driven by improved seller readiness and structured coaching programs.

Increased Cisco Network Optimization Services bookings from $600M to $1B, driven by improved seller readiness and structured coaching programs.

Delivered consultative selling and analytics-driven coaching at Cisco, enabling a $4M renewal with a major Canadian financial institution and strengthening specialist execution across enterprise accounts.

Led delivery readiness for Everpure’s Lifecycle Service pilot, improving execution discipline and supporting strategic customer expansion.

Increased Cisco Network Optimization Services bookings from $600M to $1B, driven by improved seller readiness and structured coaching programs.

Led delivery readiness for Everpure’s Lifecycle Service pilot, improving execution discipline and supporting strategic customer expansion.

Recognized industry-wide for enablement leadership; invited to present at TSIA and Sales Enablement Collective.

Increased Cisco Network Optimization Services bookings from $600M to $1B, driven by improved seller readiness and structured coaching programs.

Led delivery readiness for Everpure’s Lifecycle Service pilot, improving execution discipline and supporting strategic customer expansion.

Leff management Consulting Advisory engagements




REcommendations

One of the first things you notice about Mark is his personality; he has an energy and positivity that naturally draws people in. Beyond that, what truly sets him apart is his ability to execute. In a world full of people who talk about what they’re going to do, Mark is someone who actually gets things done. He combines strategic thinking with a relentless work ethic and consistently follows through at a high level.
 

Mark brings professionalism, urgency, and a solutions-oriented mindset to everything he does. He’s the kind of person you want in your corner when building something meaningful because he not only understands the vision, but he helps make it happen. Above all, Mark is someone I trust deeply both professionally and personally, and I would recommend him without hesitation to anyone looking to work with a high-integrity operator who delivers.


Mark is one of those people who makes an impact, and an impression. He is always connecting the dots and striving for a win-win scenario. His energy and tenacity are infectious and he always maintains the highest level of integrity in everything he does. I highly recommend Mark for business development and leadership! 


 I've had the privilege to know Mark for many years during our time together at Cisco and Everpure (formerly Pure Storage).  He has extensive experience and passion for Services product management, Partner GTM, and Field Sales enablement.  With his wide range of roles and experiences from Large Enterprises to Start-ups, he has demonstrated his ability to adapt to and add value in a variety of environments. 


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