Master of Science (honorary), University Architects, 1979. Master of Science in Mathematics (honorary), Sofia University, 1986.
Manager Center Accelerated Implementation, Sofia, Bulgaria, 1981—1986. Deputy managing director Proxima, 1987—1991. Project manager Wade Adams, Zimbabwe, 1991—1996.
Resident engineer Parsons Int, Pasadena, United Arab Emirates, since 1997. Consultant Parsons International, Pasadena, California, since 1997.
Member of American Society of Civil Engineers.
Married Laureta Marko Pizzolato, March 26, 1958. Children: Ranguel Ludmilov, Mario Ludmilov.