 Vijayan then went on to do an MA and MPhil in Economics from Calicut University, and finally passed the prestigious Civil Services examination in 1999 to join the IPS.Vijayan is married to Dr Beena IAS, a medical doctor by training and a civil servant (Kerala cadre 1999) by profession, and the couple have two school-going children.In 2008, Vijayan And Beena were recognised as the Model Official Couple by Thrissur-based South Indian Bank Ltd.

A Kerala cadre police official, Vijayan led the teams that investigated the Kalamassery Bus Burning case, the Sabarimala Thanthri case, the Chelembra Bank Robbery case, and the email threat case against the Prime Minister of India.