UPSC Combined Geo-Scientist Recruitment 2027: The Union Public Service Commission (UPSC) has released the official notification for the Combined Geo-Scientist Examination 2027 for 127 vacancies. The recruitment includes posts such as Geologist, Geophysicist, Chemist, Scientist ‘B’, Assistant Geologist, Assistant Geophysicist, Assistant Chemist and Assistant Hydrogeologist under the Geological Survey of India (GSI) and Central Ground Water Board (CGWB). The UPSC Combined Geo-Scientist 2027 notification was released on 2 September 2026, and the online application process has also started. Eligible candidates can apply online until 22 September 2026 up to 6:00 PM. The Preliminary Examination is scheduled for 10 January 2027, while the Main Examination will be conducted on 19 and 20 June 2027.