Our team of subject matter experts is responsible for devising the long-term strategy of Subex and ensuring sustainable growth.

Managing Director & Chief Executive Officer

Surjeet Singh

Surjeet has more than two decades of global experience in leading finance, corporate development, business planning and global operations functions across industries.

Before joining the Subex Board of Directors, he was the Chief Financial Officer of Patni Computer Systems, an IT company publicly listed in India and the US. He was earlier CFO and co-founder of Cymbal Corporation, a boutique systems integrator consulting firm in business support systems (BSS). Cymbal was acquired by Patni in 2004.

A commerce graduate from the University of Pune, he is trained in finance, with cost and management accounting and CPA degrees. He is a graduate of the Advanced Management Program at Harvard Business School. Surjeet is based in Silicon Valley since 2000.

Chief Operating Officer

Vinod Kumar

Vinod is responsible for managing portfolio development and innovation, client acquisition and relationships, and fulfillment teams. Earlier, he held positions of Group President and President and Senior Vice President – Sales of Subex, where he was directly responsible for revenue generation as well as day-to-day operations of Subex’s sales organization spanning sales, sales operations, alliances, and channels.

Chief Technology Officer & Head of Service Delivery

Ashwin Chalapathy

Ashwin has rich engineering, operations, business development, and people management experience over two decades in the IT industry. He is responsible for developing domain-led solutions, services and technology offerings of Subex. Ashwin also leads the Managed Services operations, building operational capabilities and competencies across the business optimization portfolio.


Our portfolio team has rich experience in developing scalable products and platforms for global telecom enterprises.

Vice President - Engineering

Panchanan Pradhan

Panchanan leads the product development and engineering organization for design and delivery of next-generation Subex products. He has over 25 years of experience in software development, solution architecture, application development, and managed services. Earlier, he worked at Nokia and Huawei Technologies.

Vice President - Product Management

John Brooks

John handles project management and P&L for product teams. He has 30 years of experience in telecommunications, healthcare, defense, and other industries. John has expertise in engineering, consulting, finance, sales, and product management. He was formerly with Henderson Technology.

Vice President - IoT Business Solutions

Kiran Zachariah

Kiran is responsible for managing Subex’s IoT Security Solution, IT, and procurement. He has over 17 years of telecom experience in security, network analytics, and machine learning.

Senior Director - Analytics Services

Sanjaya G.S.

Sanjaya is responsible for business development, analytics solutions development, and building a Data Science team at Subex. He has 20 years of experience in engineering, analytics services, and product innovation. He was formerly with Sonata Software.


Our sales and new business development team has deep domain knowledge of industry dynamics across regions and understanding of our client’s requirements.

Vice President- Market Head

Suraj Balachandran

Suraj heads Europe and emerging markets at Subex. He has over 22 years of experience in software and technology solutions sales in global organizations, including Jamcracker and BSEEN International.

Regional Vice President, Sales - North America

Mark Bourgoin

Mark handles the OSS/BSS portfolio across the US and Canada at Subex. He has over 34 years of experience in sales, marketing, and technical design of hardware, software, and service-related products. He has also worked at Oracle.

Regional Vice President, Sales - CALA Region

Erik Viteri

Erik handles sales across the Caribbean and Latin America (CALA) region at Subex. He has over 15 years of experience at global organizations such as S&L Consulting Associates LLC, and Clarabridge.

Regional Vice President, Sales - Middle East & North Africa

Hayssam Kanoun

Hayssam manages sales across the Middle East and North Africa at Subex. He has over 26 years of experience in sales management and marketing. He has previously worked at Clarity.

Regional Vice President, Sales - Asia Pacific Region

Nilanjan Kanjilal

Nilanjan manages sales across APAC at Subex. He has 15 years of experience in international business development, growth transformation, investor relations, P&L accountability, and general management.

Regional Vice President, Sales - Europe

Norbert Holst

Norbert manages sales across Europe at Subex. He has over 25 years of experience in sales and product management. He has worked at Amdocs and Dell Computer.

Director, Sales - Africa

Pieter Henstra

Pieter heads sales across Africa at Subex. He has over 20 years of experience in sales management, specializing in OSS/BSS, ROI, business process analysis, and data security. He has worked at CSG International and Secersa.

Senior Director - Business & Solutions Consulting

Rohit Maheshwari

Rohit is responsible for driving Sales and Managed Services offerings across Asia-Pacific, Europe, Middle East, and Africa at Subex. He has 25 years of experience, having worked at Crompton Greaves and Kirloskar Electric Company Limited.

Director- Business & Solutions Consulting Development

Andrew Jacobs

Andrew leads pre-sales and business development for Subex’s Network Analytics solution and other services portfolio. He has 30 years of experience in pre-sales, financial analysis, BSS/OSS, mobility, and SDN/NFV. He has worked at Level 3 Communications and Verizon.

Principal Consultant - Business & Solutions Consulting

Martin Bedford

Martin has 25 years of experience in pre-sales, business solutions, and financial analysis. He has worked at EnvironmentIQ and Convergys.

Director - Marketing

Neeraj Deuskar

Neeraj has 15 years of experience in product and services marketing, strategy formulation and implementation, specializing in IT-ITES, product marketing, and the telecom sector. He has worked at Infosys and Firstsource Solutions.


The project management rigor of our global fulfillment and customer service ensures a successful track record of execution ensuring operational excellence

Vice President & Global Head - Managed Services

Anshuman Saha

Anshuman has 18 years of telecom experience, specializing in BSS operations. He has worked at Mobily, Technotree and Idea Cellular.

Head - Global Support

Renji George

Renji manages P&L, schedule management, quality, and customer satisfaction at Subex. He has 18 years of experience in telecom OSS/BSS COTS products and solutions delivery.

Senior Director - Global Delivery

Siva Koteswara Reddy

Siva has more than 18 years of experience in product development, end-to-end project delivery management, product engineering, and program management.

Senior Director - Managed Services

Srinivas M.R.

Srinivas is responsible for steering operations for Managed Services across the Americas, EMEA, and APAC at Subex. He has more than 18 years of experience in OSS/BSS, P&L management, operations management, business development, delivery management.

Senior Director - Delivery

Jamie More

Jamie is responsible for Delivery across the Americas and APAC at Subex. He has over 15 years of experience in project management and IT delivery programs.

Senior Director - Delivery

Gordon Ide

Gordon handles Delivery across Europe, the Middle East, and North Africa at Subex. He has over 27 years of experience in project management and IT delivery programs. He has worked at Syndesis, and Telindus.


Our finance and compliance team is focused on the growth and sustainability of Subex.

Chief Financial Officer

Mehernaz Dalal

Mehernaz oversees the corporate finance, legal, treasury, taxation, secretarial and legal functions at Subex. She has more than 15 years of experience in finance and management. At Subex, she heads corporate finance, along with other managerial functions. Before Subex, she worked with Patni Computer Systems (IGATE).

General Counsel

David Halvorson

David leads the company’s legal functions. Earlier, he was the Chief Legal Counsel, Contracts, responsible for contractual dealings with customers, vendors and partners. David joined Subex in 2009 and managed legal matters of the company in the Americas region.

Before Subex, he headed intellectual property and licensing issues for Qwest, served as General Counsel for a technology start-up, and worked in a private legal practice specializing in intellectual property and licensing issues.


Our professionals join hands to ensure that Subexians are always motivated and our clients benefit from our robust governance structure.

Chief People Officer

Mohan Sitharam

Mohan manages human capital and human resources (HR) functions at Subex. He has nearly two decades of HR experience at Mindtree, HCL, Mphasis, and ANZ. Mohan has rich experience in change management, leadership development, mergers and acquisitions, public listing, global employment norms, and employer branding. He holds both Senior Professional in HR (SPHR) and Global Professional in HR (GPHR) certifications from the HR Certification Institute, Virginia, US.

Global Head - Quality and PMO

Neville Collins

Neville manages Quality, PMO & Sales Operations at Subex. He has over 20 years of experience in vendor management, quality, and delivery. He has worked at AON Limited and MLHSBC.

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