Özcan founded HumanGroup in 2006. The company has successfully executed numerous projects—particularly in executive search and placement, as well as in assessment and development centers, HR structuring, and executive coaching and mentoring. She introduced training and consulting models to the Turkish business world—recognized by international authorities—covering areas such as human behavior, communication, conflict management, and leadership development.
In 2012, HumanGroup became the Turkish representative of Kestria, the world’s largest international executive search and placement firm. In 2014, Özcan assumed the role of Regional Leader for Kestria’s EMEA (Europe, Middle East, and Africa) region.
Having become a member of PERYÖN (People Management Association of Turkey) in 2003, Özcan was elected to the Association’s Board of Directors in 2017. She served as Vice Chair of the Board for the 2023–2025 term and continues to serve as the Chair of the Ethics Committee as of 2025.
Since 2021, she has served as a Board Member responsible for "People and Culture" at the Turkish Enterprise and Business Confederation (TÜRKONFED), the umbrella organization for regional and sectoral business associations.

Gaye Özcan is married and has a daughter.