Niki Mastrokosta
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Niki Mastrokosta

Human Resources Development Expert | OTE Group of Companies

Niki Mastrokosta is a Human Resources professional with more than 8 years of experience across talent development, employee engagement, learning & development, and organizational culture. In her current role as Human Resources Development Expert, she focuses on building people-centered initiatives that support employee growth and business transformation.

Having held leadership positions in People & Culture, she has worked extensively on shaping employee experience strategies, strengthening internal communication, and driving initiatives related to wellbeing, engagement, and employer branding. Her approach combines business understanding with a strong focus on creating authentic, inclusive, and high-performing workplace environments.