Management Team


Bart de Graaff

Bart de Graaff joined ngena as the Managing Director in May 2019. In this role, Bart works with the ngena team to elevate partner and end-customer experience along with realizing sustainable growth by continuous business development and introducing new value-added services to the platform. Prior to joining ngena, Bart spent over 20 years working with global consultancies and IT powerhouses. For 12 years, he was the managing director at Accenture, running cloud sales, solution and operations as well as creating digital and data-driven client programs. He also worked in enterprise architecture at Perot Systems Corp. Bart is passionate about helping companies and teams exceed their own expectations and prides himself in finding unique alternatives to challenges by utilizing new and proven technology. He joined ngena because he wanted to be a part of innovating the core of any digital business: the network.


Dr. Marcus Hacke

Marcus developed the idea and concept behind ngena, and has been the company’s Managing Director since its formation in February 2016. From 2004 until then, he worked at Deutsche Telekom Group where he held several managerial positions in Sales, Delivery and Product Management. In these roles, his responsibilities included global provisioning and operations of telecommunications solutions, as well as the development of a global IT portfolio. Before joining Deutsche Telekom, Marcus spent seven years in the industry as a business consultant with McKinsey & Company, focusing on the IT and telecommunications industries. Marcus holds a doctorate in physics, and recently won the Network Transformation Awards 2018 for “Individual Achievements” for his contribution to the ongoing global network transformation process and his achievements in the SDN world.

key players in networking industry

Chris Burke

Chris Burke joined ngena as Chief Commercial Officer in July 2020. Chris has spent almost 40 years in the Telecommunications, IT and Technology industries in a very International careerHaving held both Senior Technical and General Management responsibilities in a Telecoms Equipment Manufacture (Nortel), Fixed Line Carrier (Energis), Wireless Service Provider company (Vodafone), and a User Equipment Manufacturer (RIM). After graduating from university in 1982 with a Bachelor of Computer Science, Chris spent 15 years with Bell Northern Research (R&D for Northern Telecom) and Nortel holding a variety of roles in software development, operations and ultimately Sales, working across North America, Europe and Asia. From 1997 to 2000 Chris was CTO at Energis Communications, forming part of the executive team that led Energis through IPO and into the FTSE 40. From 2001 to 2005, Chris worked at Vodafone, where he was Vodafone’s first Chief Technology Officer (CTO) responsible for Vodafone UK’s technology, product architecture, design, procurement, development, support and operations. Chris’s last position in a public company was as Managing Director for Research in Motion (RIM) in Europe, Middle East and Africa (EMEA) departing in 2009.  Since 2009 Chris has spent most of his time developing early stage Companies in his Investment Portfolio and assisting more mature Companies through his Advisory Business.   


Consulting and Teleco

Maja Grätz

Maja Grätz joined ngena in August 2020 as the new Chief Operating Officer. She is a transformational leader with 20 years of experience in Consulting and Telco. Prior to ngena, she worked for Accenture, Liberty Global, Unitymedia and Vodafone in senior executive roles always with a focus on bringing global teams to high performance. Maja is passionate about simplifying complex matters and bridging the gap between technology and business. At ngena she will scale up operations, putting ngena’s customers first.


Miguel Rodriguez

Miguel Rodriguez joined ngena in July 2019. He is a communicator and a humanitarian. For more than 30 years from early beginnings he has been an expert in communications. Creating and producing success for others through messages that reached emotions and resulted in positive conducts towards the target and objectives. With a Masters in Telecommunications Miguel’s passion evolves in the Tech World. During his lifetime work in the field of Marketing and Communications he has been in center stage for big corporations, governments and Presidents and much more. Miguel has founded more than five companies that all articulated in an Image group that grew in the mind of many clients. Some years ago his passion took him to launch a self conceived NGO to rescue children and an amazing impact was the result of such effort. At ngena he continues to develop ideas and mostly creates, his biggest strength, in a world where creativity is the main driver to success.


Dietmar Geiler

Dietmar has played an integral role in founding ngena since 2016 and leads the Product & Presales team. Prior to ngena, he worked for over 15 years at Deutsche Telekom Group where he was a Senior Executive with broad responsibilities for Product and Portfolio Management (Voice & Data Services, Global VPN Services, LAN & Campus Networks, ICT Security Services), and was also responsible for the global TC Portfolio of T-Systems Local Business Units worldwide. Before that, Dietmar worked as a Technical Consultant, focusing on ramping up the “new Telco” VIAG Interkom. Dietmar studied communications engineering, with a focused study evaluating WIRELESS LOCAL LOOP (WLL).


Joerg Gimmler

Coming with more than 25 years’ of extensive experience, Joerg is heading the operations and service delivery at ngena from the inception of the company in 2016. In this role he is responsible for operational relations with network service providers and logistic partners worldwide, service fulfilment and assurance as well as the operations for service and infrastructure. Prior to ngena, Joerg worked for Deutsche Telekom Group as Vice President Platform Operations from 2004 to 2016. During this time, he established Deutsche Telekom’s global MPLS fulfilment, assurance and vendor management organisations. He also looked after trusted customer relations on CIO level with large corporates. Before joining Deutsche Telekom, Joerg held senior positions in the fields of engineering, planning, contract and product management with telcos and telco suppliers from around the world.

SDWAN service provider

Cleber Viana

Cleber Viana joined ngena as the head of the Americas in July 2019. In this role, Cleber works with the ngena Americas team to develop the global vision with the local market’s attention, care for our partners, end-customers by developing local capabilities and value-added services. Before ngena, Cleber spent over 20 years working in Accenture Infrastructure and Telecommunications industries, helping clients and partners to evolve their business to face new market challenges. During the last 5 years, he was the Managing Director responsible for Consulting Practice in Cloud, DevOps, and Digital Data-Driven transformation. Cleber is a team builder and a tech-savvy passionate to make significant transformations and achieve major goals. He joined ngena because of the opportunity to disrupt a market and transform the way people and companies connect.


Shivaraja Gowda

Shiva is the Head of Platform at ngena since March 2020. In this role, he is responsible for planning and roadmap development of ngena’s platform activates related to infrastructure, engineering, network, business IT, security and is in charge of running its global platform. Shiva joined the ngena team in early 2017 as Lead Enterprise Architect to roll out its business IT platform. Since then he has been working with ngena’s technology and telecommunication partners to integrate their IT platforms with ngena’s to ensure smooth and timely delivery of SD-WAN services. Prior to joining ngena, Shiva worked with Orga Systems/Redknee Inc., a leading vendor of customer care and billing solutions, where he helped the organization establish Consulting & Delivery Centres in Malaysia and India and delivered projects globally. Shiva holds Master’s in Business Administration from Edinburgh Napier University and Bachelor’s in Computer Science & Engineering from University BDT College of Engineering, Davangere.


Yavor Nedkov

Yavor is the Head of Quality Assurance and Testing at ngena since January 2020, overseeing a team of highly skilled QA and Process professionals. His primary objective is ensuring the right quality standards and processes are in place to meet and exceed ngena’s customer expectations. Yavor joined the company in 2017 as a Process Architect and a year later took the role of BSS/OSS Product owner and Co-Lead of Business IT and Processes division. Before joining ngena, he worked for two years at the European Central Bank (ECB) as an external consultant, where he was heavily involved in designing, implementing, streamlining and continually improving the IT Service management process landscape, based on ITIL best practices. Prior to ECB, he spent eight years at Hewlett-Packard, working in the areas of IT support, IT Service Management and project management. During that time, he had number of roles, including managerial and leadership positions. Yavor holds a Master’s degree in Economics and Bachelor of Business Administration. He has been awarded professional certificates in IT service Management and Project Management such as ITIL Expert, Prince 2 Practitioner and Lean Six Sigma Green Belt.


Oliver Hübner

Oliver Hübner has been responsible for contract management, regulatory affairs and corporate strategy within ngena since 2016. Before ngena, he worked for Deutsche Telekom’s Center for Strategic Projects where he successfully managed several transformation programs and initiatives. Before that, he worked at Vodafone, where he oversaw corporate strategy development and implementation, especially in the German B2B arena. Prior to Vodafone, he worked for Accenture Consulting where he successfully optimised various telecommunication operators’ processes. Oliver started his career at Lucent Technologies as a systems engineer, where he was responsible for selling and implementing IP Services solutions for different customers. He holds a Diploma in Electrical Engineering from TU Braunschweig and an MBA from WHU – Otto Beisheim School of Management.

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