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The Sigma leadership team

Simon Muderack

CEO and President, Communications Division

As Chief Executive Officer and President, Simon Muderack oversees Hansen’s Communications Division worldwide. Prior to this, he was the Chief Commercial Officer and Executive Vice-President of Sigma Systems, providing leadership of global sales and marketing for the company.

With extensive experience working with communications service providers across the globe in wireline, wireless, wholesale and cable operations, Simon provided his expertise in running the commercial business for Sigma, He has also played an instrumental role in spearheading the company’s expansion into new markets and industries across the globe.

Before Sigma, Simon was the Founder and CEO of Tribold, acquired by the company in 2013.

Brian Cappellani

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.

Mark Flynn

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.

Stephen Krajewski

Vice President of Marketing

Stephen has over 15 years of experience in leading marketing teams for enterprise solutions at Amdocs, Iron Mountain, Thunderhead and Kenan Systems. Stephen has particular expertise in product marketing for high-value software and services for telecommunications providers, as well as demand generation processes and leadership.

Santosh Honnagunti

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.

Andrew Hansen

Chief Executive Officer, Hansen Technologies

IT executive with over 30 years of experience, including management of mid to large size organizations, corporate development, business operations, and strategy. Current CEO and Managing Director at Hansen Technologies Limited.

Andrew joined Hansen Technologies in 1990, and quickly began to transform the business and then ASX listed the company in 2000. Andrew’s IT expertise combined with his strong business acumen has built a diversified global company delivering market leading billing and customer care solutions in over 80 countries.

Andrew leads the strategic direction of the business with a dedicated and diverse team of over 1000 industry experts delivering solutions to some of the globe’s leading companies. Hansen’s CX product suite is now used by over 500 substantial companies worldwide.

Jeff Haar

General Counsel and Compliance Lead

Jeffrey Haar is a legal and business executive with more than twenty years of experience across multiple industries and disciplines. He has extensive experience in corporate and commercial law, as well as corporate finance and M&A, for both private-sector and public-sector companies. As general counsel at Sigma Systems, he oversees all legal functions, encompassing commercial contracts, corporate governance, intellectual property, litigation, human resources and real estate.

Jeffrey started his legal career in New York and has worked on transactions globally. He previously worked at Postmedia Network, Brookfield Asset Management and Architel Systems Corporation.

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