Thomas hails from a middle-class family from
Alappuzha district. A brilliant student right from his school days, Thomas is a post-graduate in
Physics and later took his Masters in Economics. Thomas joined the Indian Administrative Service as one of the toppers in the
Civil Services Examination in the year 1973. His elder brother,
Johny Joseph, is also an IAS officer. As an IAS officer, Thomas has held important assignments in Kerala as the Chief Electoral Officer of the state, and as Secretary in Finance, Industry, Agriculture, Law and Justice and Human Resource Development Departments. As the chief electoral officer, Thomas was instrumental in introducing
electronic voting machine in all stages of election. He was the founder director of the
Indian Institute of Management, Kozhikode. He became the Kerala
Chief Secretary in 2007 and moved to the central government as Secretary in the
Ministry of Parliamentary Affairs in January 2009. Later he went on to become the Telecom Secretary. The
3G Spectrum auction happened when Thomas was the Telecom Secretary and helped the government earn a revenue two times than what analysts predicted. The 3G and broadband spectrums jointly fetched 1060 billion Indian rupees for the government against its estimates of 350 billion. The success of 3G Spectrum was a big boost to the government, when it was bearing the brunt from
2G spectrum case, the auction for which happened before Thomas assumed the office of Telecom Secretary. While in Telecom, Thomas opposition to Devas deal was decisive for the government. Thomas had stressed that the spectrum planned by the
Department of Space is crucial to meeting the strategic requirements of nation and hence it should not be frittered away by giving it to private parties and that too not without following the process of auction to maximise the government revenue. In September 2010, Mr. Thomas succeeded Pratyush Sinha, a 1969-batch IAS officer of
Bihar cadre, as the CVC. ==Allegations==