The Sigma leadership team
Sigma’s executive leadership team possesses more than 100 years of expertise and experience in communications, IT, business process and executive management.
President & CEO
As co-founder, President and CEO, Tim Spencer is responsible for establishing and executing the growth strategy for Sigma. Tim has been responsible for Sigma’s strategic direction and corporate operations since 2003.
In his previous role as Sigma’s Chief Technology Officer, Tim helped turn the company’s early technology vision into reality and along the way transformed Sigma into the leading provider of OSS service management products and services. Prior to joining Sigma, he held various senior positions with Bell Canada. He was Director of Software Engineering for advanced services at Bell Mobility, where he was responsible for the design and development of real-time OSS solutions such as message processing, service activation and fulfillment, inventory and network management. Tim also led several international OSS consulting projects for Bell Canada International in Central and Latin America.
EVP & Chief Commercial Officer
As the Executive Vice President and Chief Commercial Officer of Sigma, Simon Muderack provides leadership of global sales and marketing for Sigma Systems. With extensive experience working with Communications Service Providers across the globe in Wireline, Wireless, Wholesale and Cable operations, Simon provides his expertise in running the commercial business for Sigma, further penetrating existing markets while entering into new markets and industries. Before Sigma, Simon was the founder and CEO of Tribold acquired by Sigma in 2013.
Senior Vice President of Engineering
Brian Cappellani is currently Senior Vice-President of Engineering at Sigma Systems where he provides the technical vision, leadership and long-term direction for all aspects of the software development organization. He previously served as the company’s Chief Technology Officer, where he was responsible for Sigma’s architectural and technology vision.
A 21-year telecommunications industry veteran, Brian has extensive experience designing and building large-scale operations and business support systems.
Prior to joining Sigma, Brian worked for Accenture in various roles including senior-level architecture, engineering and development management positions, held both internally and within Accenture’s telecommunications practice, focusing on wireless and satellite technologies.
Brian is a highly sought-after speaker on next-generation OSS and software development.
Chief Technology Officer
Catherine Michel is the Chief Technology Officer for Sigma Systems, responsible for the company’s product portfolio, strategy, and technology direction. Named in 2018 as the Chief Technology Officer of the year by TM Forum, Catherine is a recognized industry thought leader and advocate for women in technology, often speaking at numerous events across the globe. Catherine was previously co-founder of Tribold (acquired by Sigma in 2013) and a senior executive in Accenture’s Communications & High-Tech practice, devising and delivering business strategy and large-scale BSS / OSS solutions globally.
Chief Financial Officer
For the last two years, Robert has served as the Chief Financial Officer of Sigma Systems. In addition to his time as Sigma, Robert has accumulated vast experience within the investment banking and corporate banking environments with a focus on corporate finance, mergers and acquisitions, strategic and corporate planning, debt raising, IPO, and private equity.
Vice President of Global Services
Mark Flynn has been leading Sigma’s Global Operations Team for the past 5 years. He is testament that Sigma grows from within – he started as a Business Analyst and today, as VP of Global Services, supports the great team of people in professional services, technical support, training, Cloud Operations and IT. He has extensive experience in program delivery, operations and customer management. Prior to Sigma, Mark worked with Toys R Us, and AT&T Canada.
Vice President of Human Resources
Jocelyn Bryce is the lead of Sigma’s People and Culture programs for the past 6 years and she is very proud of the recent recognition Sigma has received with awards such as as Top SMB Employer In Canada and Deloitte Best Managed company. Jocelyn is a senior human resources executive with over 20 years of experience in Tech organizations working with senior executives and their teams to build their organizations, manage change and develop global talent.
Vice President of Marketing
Glenn Gibson is a senior marketing professional with over 20 years of experience, having worked within the sports, packaged goods, and most predominantly within the communications and global technology/software industry.
With strengths and expertise in the areas of account-based marketing, brand strategy/planning, lead generation, product marketing, digital marketing, and general marketing leadership, Glenn has served as the Vice President of global marketing at Sigma for the last year and a half.
Country Head & COO, Pune
Santosh serves as Sigma’s Country Head and Chief Operations Officer in Pune, India. A previous Wipro and Ericsson executive, Santosh has over 18 years of extensive experience in the communications OSS/BSS/SDP domains. Santosh has extensive experience working with CSPs in Europe, Middle East, APAC, South Africa and US with leadership roles and experience in presales, sales, heading practices, solutions, delivery and managed services.
General Counsel and Compliance Lead,
Your Next Opportunity
Search for open positions and apply today!