Hack The Box grows leadership team

NEW YORK – Hack The Box (HTB) has named Konstantinos Dolkas as chief technology officer (CTO) and promoted Christine Bartlett to chief marketing officer (CMO), strengthening the company’s leadership team as it expands its artificial intelligence (AI)  cybersecurity readiness platform and accelerates global growth. With more than 800 enterprise customers and a global community of more than 4.3 million security professionals, HTB continues to scale its presence across enterprise, government and managed security service provider (MSSP) markets. Together, Bartlett and Dolkas will drive HTB's strategic roadmap, expanding its reach and enhancing its platform to help organizations build resilient, AI-ready cyber talent capable of mitigating sophisticated modern threats. “As the threat landscape evolves alongside rapid advancements in AI, organizations recognize that true cyber resilience depends on continuous, hands-on workforce capability,” said Haris Pylarinos, founder and CEO of Hack The Box. “Konstantinos brings technical experience building and scaling world-class engineering organizations, while Christine has played a critical role in expanding our global brand and strengthening how we connect with customers around the world. Their leadership will be vital as we advance our platform to prepare the global cybersecurity workforce for the most complex security challenges.”

• • Dolkas brings nearly 20 years of executive technology leadership experience across cybersecurity, SaaS, mobility and insurance. Prior to joining HTB, Dolkas served as CTO at OWNR Deutschland GmbH, leading engineering and technology strategy. He holds a Ph.D. in cloud computing architecture and a master’s degree in electrical engineering and computer science from the National Technical University of Athens.
• • Since joining HTB as vice president of marketing in 2025, Bartlett has expanded the company’s global awareness while advancing its vision. Before joining HTB, she served as CMO at SonicWall after holding senior marketing leadership roles at Cisco. She has been recognized as a CRN Women of the Channel honoree and named to the 2026 HotTopics Future B2B CMO 100.

Related: Hack The Box rolls out new tools to address cyber workforce gaps