After his probation, Alexander was posted as
Superintendent of Police,
Kottayam and subsequently at
Kannur. He also worked as the Commissioner of Police,
Kochi City in 1990. He was the principal of Police Training College, Thiruvananthapuram, in 1992–1995. He was promoted to
Deputy Inspector General of Police (DIG), Northern Range (Kerala) and subsequently as DIG,
Armed Police Battalion. He was the director of
Kerala Women's Commission taking over his assignment as Secretary, Institute of Management in Government in January 1999. In May 2000 he was posted as Joint Director of Kerala Police Academy. He was promoted as
IGP and posted
Inspector General of Police (Training), Kerala State and
Ex Officio Joint Director Kerala Police Academy in 2001. In 2006 he was promoted to the Director of Kerala Police Academy. Alexander is also involved in teaching many different groups of students in the Civil Service. == Awards ==