Keith Korsi

Founder & Chief Executive Officer

Keith Korsi co-founded Trissential in 2003. In addition to his responsibilities to the company as CEO, Keith also manages Trissential’s executive leadership team and sales division.

An industry veteran of 29 years, Keith is a recognized thought leader and sought-after speaker who has a strong reputation for building and maintaining relationships for mutual success. His unique ability to combine top down visionary thinking with bottom up execution, has enabled Trissential’s continued success.

Mecca Robbins

Head of People Operations

Mecca worked as the U.S. HR Leader for Trissential’s parent company SQS (now Expleo Group) from 2014 to 2015, and returned to Trissential to lead HR, Recruitment, and Resource Management for the USA. Her career has been focused on people initiatives and talent management to achieve business success.

Mecca is a proactive and high energy change manager and internal communications champion. She focuses on building strong relationships at every level. Mecca designs and delivers cost efficient programs and processes which bring time and cost savings. She is a coach and a welcome leader on the executive team.

Jim Mohs

Sales Essentialist™

Jim Mohs is the Principal and Sales Essentialist™, joining the team in 2006. He exceeds client expectations with ease of communication, developing strategic and trusting relationships, and delivering high quality solutions.

Over his 30+ year career, Jim has honed a natural partnering style, which paired with his ability to discern client-critical insight, allows him to help clients efficiently and effectively achieve their business and IT objectives.

Kelli Mack

Director of Operations

Kelli Mack is Director of Operations, joining the Trissential team in 2009. With her 25 years in the consulting services industry, Kelli combines strong business and human resource expertise to strategically partner with business leaders to meet the organization’s goals. She is a versatile employee relations professional with a strong passion for business process, consulting operations and creative problem-solving.

Mark Sirianni

Senior Director of Finance

Mark Sirianni joined Trissential’s parent company SQS (now Expleo Group) in 2013. He is responsible for delivering timely and accurate financial reporting as well as managing all accounting and finance operations for Trissential.

With over 24 years of experience and demonstrated ability, Mark’s financial expertise provides the foundation for the financial administration of the organization. He offers broad management, internal control and strategic advice to senior management. ​

Jon Whitcomb

Sales Essentialist™

Jon works with our clients to understand their business and provide services and solutions to support their strategy. He leads the Minnesota sales team and is responsible for expanding our solutions within our current clients and developing new relationships.

Prior to Trissential, Jon was President of Upton Hill, Chief Operating Officer at ITR Group and VP of Sales for Digineer. Jon brings 25 years of experience and a proven track record of success in business and technology consulting.

Craig Thielen

Head of Digital Solutions

Joining Trissential in 2007, Craig Thielen is passionate about helping organizations gain digital transformation for sustained competitive advantage.

For 25+ years, Craig has been a highly sought-after consultant and has advised many world-class global organizations. He is a globally recognized thought leader, speaker, and writer on the topics of Data Centricity, Business Agility, Enterprise Transformation, Innovation, Culture, Change Leadership, and Strategy.

Craig also serves as Head of Global Services and Innovation for our parent company, Expleo. While driving improvement on the global scale, the awareness and access to our wide global capabilities and experience is a huge benefit to our clients.

Diane Prentis

Head of Business Solutions

Diane Prentis has worked with Trissential as both a consultant and a client. She now leads Trissential’s largest services group as Head of Business Solutions. Her 25+ year career spans all industries leading business strategy and transformation initiatives with varying degrees of maturity. Diane’s passion is connecting with individuals to drive business improvement. Prior to this new position, Diane was the Director of Business Relationship Management at one of the largest electronics component distributors in North America.

Jeff Chartos

Head of Quality Solutions

As Head of Quality Solutions, Jeff brings 25+ experience leading initiatives in Software Quality Assurance across several business verticals. He contributes exception experience and expertise in solutioning software quality assurance challenges. Before Trissential, Jeff held various leadership roles to improve IT QA departments and delivery.

Jeff has worked with multiple Fortune 500 clients including SPSS.IBM, Blue Cross Blue Shield, Trading Technologies, and General Motors. He specializes in software quality and delivery improvement by innovating and implementing solutions related to lean/agile methodologies and concepts. Jeff was also a professor in the College of Engineering at the University of Kentucky.

Liz Harvey

Director of Recruiting

Frank Cress

Sales Essentialist™

April Weseloh

Marketing Manager

Caty Dittrich

Business Process & HR Manager

Robert Gormley

Chief Essentialist™

Robert has worked for 18+ years in Quality Assurance and worked his way up through the ranks delivering digital transformation through quality management strategies with fortune 100 companies across all industries. From his early days to present day, Robert’s focus has always been on creating lean, agile processes that allow organizations to produce quality software that meets customer needs.

Robert leads companies to transform their business through Agile, DevOps, CI/CD, RPA, and Automation. Leveraging his Master’s in Education, and Certified Scrum Master, Robert’s passion for quality innovation and transformation drives him to train and mentor companies and specialists throughout the globe.