From Mannady at Kadampanad panchayath in Pathanamthitta district, Girija K.S IAS studied BTech in TKM College of Engineering and passed out with 4th rank from Kerala University in 1988. She studied Master of Town and Country Planning in School of Architecture and Planning, Anna university, Chennai during 1989_91.
She has worked as AE in KWA from 1995 to 1997. In 1997, she joined Dept. of Town and Country Planning as Junior Town Planner ( Deputy Town Planner). In 2000, got promoted as Town Planner and worked in Wayanad, Thiruvananthapuram, Pathanamthitta and Idukki. She was then promoted as Chief Town Planner in 2018.