Meet the NUSO
Team

Daren Finney is NUSO’s Chief Revenue Officer, bringing over 30 years of global sales and operational leadership experience across top-tier technology companies. He joined NUSO in January 2026 to lead revenue strategy, partner growth, and go-to-market execution. Prior to NUSO, Daren led global GTM and international sales at Mitel and served as Worldwide COO for Ecosystems at Citrix. Known for building high-performing teams and driving transformational growth, Daren has deep experience across all major geographies and excels in scaling revenue through strategic change and execution.

Jon Dailey is NUSO’s VP of Channel Sales, EMEA, with over 30 years of experience leading technology sales and partner ecosystems across the UK and Europe. A proven channel leader, Jon specialises in growing revenue through strategic partnerships, with deep expertise across UCaaS, CCaaS, IaaS, and SaaS. He’s known for building collaborative, high-performing teams and delivering go-to-market strategies that align with regional market dynamics. At NUSO, Jon ensures partners across EMEA are fully supported with the tools, training, and insight they need to succeed—driving mutual growth in an evolving cloud communications landscape.

Jonathan Lacher is NUSO’s VP of Solution Sales Engineering, where he leads strategic sales initiatives and drives cross product solution adoption with partners and enterprise customers. With extensive experience in technology and cloud communications, Jonathan excels at translating complex business needs into compelling solutions and guiding teams to exceed revenue and growth targets. He is known for building strong partner relationships, aligning solutions with market demand, and empowering sales teams with the tools and insights to win. Jonathan’s leadership is rooted in collaboration, customer focus, and execution excellence, helping NUSO scale its footprint and deliver value across communications platforms.

Margaret McNerney is NUSO’s SVP of Platform Services, bringing extensive experience in sales leadership and carrier relations across global markets. She is known for building strategic partnerships and uncovering growth opportunities in voice, messaging, and CPaaS. With a deep background in termination services, DIDs, tandem, toll-free, and carrier-grade platforms, Margaret plays a key role in scaling NUSO’s global infrastructure and partner ecosystem. Her leadership focuses on aligning platform innovation with partner needs to drive long-term value.

Tom Michaels serves as VP of Cloud Platform Solutions at NUSO, leveraging deep expertise in cloud, telecom, and enterprise software to drive partner growth. With a strong track record across enterprise, government, education, and the channel, Tom combines technical know-how with a consultative sales approach. His leadership is rooted in delivering scalable network and SaaS solutions that create long-term customer value and enable partners to succeed in evolving markets.

Colleen Sheley is NUSO’s VP of Marketing, where she leads a high-impact global team focused on brand differentiation, scalable go-to-market programs, and revenue growth. With 20+ years in B2B SaaS marketing, she’s known for her collaborative leadership, sales alignment, and ability to turn strategy into results. Colleen has built and scaled teams across demand gen, product marketing, ABM, and customer engagement—always with a focus on accelerating enterprise value. Prior to NUSO, she led marketing at Drips and drove Alvaria’s SaaS transformation and rebrand post-merger. She’s passionate about enabling partner success and empowering teams to thrive in fast-paced, high-growth environments.

John Spilar is NUSO’s VP of Finance Operations, bringing a strong background in sales leadership, pricing strategy, vendor management, and financial operations. With a proven track record in driving growth and profitability, John blends financial acumen with deep operational insight across P&L management, contract negotiation, and product development. He plays a key role in aligning financial strategy with NUSO’s go-to-market execution, supporting both scalability and partner success.

Ben Warning is NUSO’s VP of Corporate Development, with extensive experience in M&A, private equity, and venture capital. He leads strategic growth initiatives through acquisitions, partnerships, and market expansion—managing everything from deal sourcing and due diligence to negotiation and post-merger integration. Known for his financial acumen and strategic insight, Ben plays a key role in aligning corporate strategy with long-term partner and shareholder value.

Matt Siemens is CEO of NUSO and a member of its Board of Directors. With 25+ years of leadership in tech-driven sales, marketing, and operations, he drives NUSO’s strategic vision and culture. Prior to becoming CEO in 2018, Matt led growth at Sotel, NuVox, Electric Lightwave, Appia, and Voxitas. He’s known for scaling recurring revenue businesses and championing partner success through innovation in cloud communications. Outside of work, Matt stays active in industry forums and enjoys time with family, photography, and restoring vintage cars.

Paul Matte is NUSO’s Chief Operating Officer, bringing over 25 years of experience in telecommunications and cloud communications to the role. He leads company operations with a focus on scale, reliability, and partner success. Prior to becoming COO, Paul served as NUSO’s VP of Cloud Operations, driving key infrastructure and service initiatives. Before joining NUSO, he held leadership roles in Global Cloud Services at NEC Corporation of America, managing complex communications programs across enterprise environments.

Keith Terreri is NUSO’s Chief Financial Officer with decades of financial leadership in telecom and technology. He has led two IPOs, managed complex capital market transactions, and built global finance functions. Before NUSO, Keith was US CFO/CIO and EVP of Business Operations at NEC. His telecom experience includes leadership roles at RCN, Valor, and MetroPCS Wireless, where he managed Wall Street analysts for seven years. A CPA with a bachelor’s in accounting from the University of Notre Dame, Keith specializes in accounting, treasury, and risk management. Outside work, he enjoys golf, biking, and is a Certified Specialist of Wine.

Garry Vardanyan is NUSO’s EVP of Engineering, responsible for leading IP and Cloud Services and driving the architecture behind NUSO’s communications platform. As the platform’s primary architect, Garry has played a foundational role in shaping NUSO’s integrated systems and service delivery. With over 20 years of experience in software development and telecom engineering, he brings deep technical expertise and a hands-on leadership approach. Prior to NUSO, he led global service and support at Epygi. Garry holds a Bachelor’s in Computer Science and Applied Mathematics from Yerevan State University.

Kris Boulware is NUSO’s Technology Chief of Staff, where she leads cross-functional alignment, strategic planning, and execution across the technology organization. With a background in client services and account management, Kris excels at bridging business goals with technical outcomes. She is a certified ScrumMaster and PMP, known for her ability to streamline programs, drive collaboration, and accelerate delivery. At NUSO, Kris plays a key role in enhancing operational efficiency and supporting innovation across teams.

Chastity Ritrovato is NUSO’s VP of People Operations, leading all facets of HR including compliance, recruiting, onboarding, payroll, training, and employee development. With over a decade in telecommunications HR and 15 years in sales management with wireless and retail brands, Chastity blends operational leadership with a people-first mindset. Her transition into HR was powered by real-world experience in team building and organizational growth. She holds a Bachelor of Science in Business Administration from the University of Missouri and a Professional in Human Resources (PHR) certification.

Aaron Hinni is NUSO’s EVP of Software Architecture, bringing over 25 years of experience in software development and cloud innovation. He leads the design and deployment of NUSO’s software solutions, driving scalability and partner-first functionality. Aaron has held leadership roles including CTO at LockerDome, Co-owner at Veda Development, and Co-founder of Appistry—a cloud pioneer with six U.S. patents. He began his career as a Senior Developer at Tapestry Computing and holds a Bachelor’s in Computer Science from the University of Missouri.

Bryanna Ward is NUSO’s VP of Business Operations, overseeing operations, porting, and billing with a focus on streamlining partner and customer experiences. A founding team member, she previously served as Director of Finance and Integration, playing a key role in building company-wide processes. Known for her passion for problem-solving and innovation, Bryanna continuously drives efficiency across teams. She holds a Bachelor’s in Business Administration from Southern Connecticut State University. Outside of work, she enjoys home remodeling projects and hiking with her dogs.

David Shipman is NUSO’s VP of Carrier Operations, overseeing network performance, vendor management, pricing strategy, and carrier partnerships. With 25+ years in telecom, David brings deep operational and infrastructure expertise to support NUSO’s scalable, high-quality service delivery. He has held leadership roles across carrier management, service optimization, and strategic sourcing—ensuring NUSO remains competitive and reliable in a fast-moving market. David plays a key role in strengthening NUSO’s carrier ecosystem and driving efficiency for both partners and end customers.

Craig McElroy is NUSO’s VP of Systems, bringing deep expertise in cloud computing, virtualization, and infrastructure design. He leads the architecture and operations of NUSO’s systems with a focus on performance, security, and scalability. Prior to NUSO, Craig served as CTO at Contegix, where he oversaw cloud and colocation infrastructure. With a background in software engineering and hands-on experience deploying complex switch and router networks across geo-redundant environments, Craig ensures NUSO’s platforms are built to scale. He holds a Bachelor’s in Computer Science from the University of Missouri.

Kevin Moss is NUSO’s VP of Compliance and Regulatory, bringing over 30 years of telecom experience across network engineering, operations, and product strategy. A founding team member, Kevin ensures NUSO’s solutions meet evolving regulatory standards while supporting innovation and partner growth. He previously led NUSO’s product development efforts, delivering industry-first capabilities across UCaaS, SIP, and compliance-driven services. Kevin’s deep technical background and strategic oversight help maintain NUSO’s leadership in secure, standards-based communications. In his free time, he enjoys fly fishing and spending time with family.

Derick Adams is NUSO’s VP of Network Operations, bringing nearly 20 years of experience in telecommunications, SIP platforms, and NOC management. A founding team member, Derick has helped shape NUSO’s technical backbone from day one. Before becoming VP, he served as Director of Network Operations and previously held the role of Senior Support Engineer at SoTel Systems. With a background in IT support and deep expertise in UCaaS, he leads with a hands-on approach to ensure resilient, high-performing network services for partners and customers.

Patrick Foster leads NUSO’s team of Channel Experts, focused on equipping partners with the tools, support, and strategy needed to win in the market. With 13 years at Adtran and recognition as a CRN Channel Chief, he brings deep expertise in building high-performance channel programs. Before entering the tech world at Dell, Patrick served in the U.S. Marine Corps as Logistics and Embarkation Chief for the 2nd Battalion, 4th Marines. His leadership at NUSO centers on enabling partner success through execution, enablement, and innovation.