Director of SDSC SHAR, Sriharikota, AP : Jan 2013 to 31 May 2015
Associate Director SDSC SHAR : 2008 to Dec2012
Deputy Director SAC, Ahmedabad : 2005 to 2008
Director DECU, Ahmedabad : 2006 to 2008
Director MCF Hassan, Karnataka : 1999 to 2005
Associate Director MCF : 1998 to 1999
Deputy Project Director PSLV, Thiruvananthapuram : Nov 1997 to Oct 1998
Counsellor (Space), Embassy of India – Paris, FRANCE : 1994 to 1997
Deputy Project Director ASLV & Project Manager-Avionics ASLV, VSSC : 1982 to 1994
Project Engineer SLV-3, VSSC Thiruvananthapuram, Kerala : 1975 to 1982
Worked in launch vehicle development, communication satellite operations, communication payload and ground systems development, international assignments, and presently in Launch Vehicle Operations Centre. Managed all areas with in-depth technical knowledge and enhanced teamwork.
Control of preparation, final operations and Launch of all PSLV and GSLV launches since 2008 at SDSC SHAR Seventeen PSLV and three GSLV Launches.
Handled many emergencies in Real time during Launch preparations, including a large Leak of Propellant in GSLV-D5 first launch attempt in August 2013.
Contributed extensively to the Failure Analysis of GSLV-F06 and GSLV-D3 Missions.
Commissioning of 9 GSO Satellite Missions from MCF, Regular operations and Emergency operations connected with many on-orbit Satellite anomalies.
Handled major emergency of INSAT-2E Satellite, and guided the Team to operate the Spacecraft through many innovative methods for its complete mission life of 12 years.
Introduced On-Board Computers into Launch Vehicles starting from ASLV.
Proposed, introduced, qualified and made operational a system in all Launch Vehicles called "Realtime Decision System in the Flight Sequencing" – which is a key element for all Launch Vehicle successes.
Introduced Design, Tests, Analysis and Solutions for all Electromagnetic Interference (EMI) problems in Launch Vehicles.
Infrastructure
Created and commissioned New Master Control Facility at Bhopal for GSO Satellite operations.
Augmented MCF Hassan Ground Stations and Control Centre to operate 20 Satellites simultaneously.
Created Satellite based Disaster Management Communication System - with 22 User Nodes, 15 Disaster Monitoring and Decision making Nodes, and with Hub at New Delhi.
Planned and realised Satellite Communication Link to connect Indian Antarctica Research Station Maithri to Goa.
Lead the Team to realise New Mission Control Centre at SDSC SHAR.
Lead the Team to realise Acoustic Suppression System at Second Launchpad at SDSC SHAR.
Conceived, Planned, Designed, and presently guiding a large active phased array antenna based beam steering radar for Multi Object Tracking. Project costing Rs. 260 Crores is nearing completion.
He has worked for four years in Paris as Counsellor (Space) and Networked many International Aerospace Professionals for the benefit of ISRO.
Represented India (& ISRO) in the United Nations Committee On Peaceful Uses of Outer Space (UN-COPUOS) for 11 years from 1996-2006.
Member of the Working Group which evolved "UN Space Debris Mitigation Guidelines", adopted by UN General Assembly in December 2007.
Elected as Member of International Academy of Astronautics (IAA) in 2008. Currently Member of IAA Awards Committee.
Worked as the Vice-President of International Astronautical Federation (IAF) for 4 years from 2006-2010.
Elected as Member of International Institute of Space Law (IISL).
Visited Aerospace Organisations and Companies in the following Countries during the last 20 years : USA, France, Germany, Italy, U.K., Scotland, Austria, Netherlands, Belgium, Norway, Czech Republic, Hungary, Tunisia, French Guiana, Singapore, South Korea, Japan, China, Canada. This exposure helped to network a large number of Space Professionals, and also to observe their models of working with close understanding.
Enrolled in the Institution of Electronics & Telecommunication Engineers (IETE) as Fellow and Honoured with Diamond Jubilee Medal – 2014 for outstanding contribution in the field of Electronics, Communication, IT.
International Academy of Astronautics (IAA) Laurels for Team Award-2013, as Technology Leader in Chandrayaan-I Mission.
^Indian Space Research Organization (2015). "4.1 The Spaceport of ISRO - K. Narayana". From Fishing Hamlet to Red Planet: India's Space Journey. India: Harper Collins. p. 328. ISBN9789351776901. This centre was originally named SHAR (an acronym for Sriharikota Range – mistakenly referred to as Sriharikota High Altitude Range by some people) by Sarabhai. SHAR in Sanskrit also means arrow, symbolic of the nature of activity and that seems to be the significance of the acronym.