Graduated in Law in the year 1975 from University of Allahabad in First Division.<ref name=hcraj/>
He was an inmate of Sir Sundar Lal Hostel.
Enrolled as an Advocate on 8 April 1976. Practised at Allahabad High Court
in the period 1976-1985; 1992 -2001 and at Supreme Court in the period 1985-1992 on Civil and Constitutional side. Passed Advocate-on-Record examination in 1986. Life Member Advocate-on-Record Association, Supreme Court of India. Served as Special Counsel , High Court 1998 -2001.<ref name=hcraj/>
Elevated as permanent Judge
Held the position of Chairman , Allahabad High Court Mediation and Conciliation Centre, High Court and State Mediation Monitoring Committee; Chairman , Computerization Committee, High Court and State e-Court Steering Committee.; Executive Chairman , U.P. State Legal Services Authority.
In July 2014, Ambwani was transferred to Rajasthan High Court.<ref name=hcraj/> Was appointed as acting Chief Justice Rajasthan High
Courtin August, 2014 <ref name="hcraj"/> In March 2015 appointed as the Chief Justice of Rajasthan High Court.