The former MTA honcho in charge of the transit agency’s biggest building projects including the Second Avenue Subway is poised to rake it in from a company with billions in contracts for some of that work.

Michael Horodniceanu, who stepped down a year ago as president of MTA Capital Construction, was just named a board member of California-based construction company Tutor Perini.

The title comes with 7,537 shares of stock, valued at $142,449 Friday, and unspecified ćcash compensation, according to SEC filings.

Tutor Perini’s Web site lists $4.1 billion worth of work completed or pending by the company and its affiliates for the MTA’s East Side Access project which will allow LIRR trains to use Grand Central. The project is years behind schedule.

“Whether it’s all legal or not, the MTA appears to have a revolving- door problem with large numbers of senior managers going to big contractors. Our concern is that MTA managers are reluctant to crack down on underperforming contractors because they hope to someday be working for those same contractors,” said John Kaehny, executive director of watchdog group Reinvent Albany.

State employees face two-year or lifetime limits on work they can do after leaving the government.

Horodniceanu has a lifetime ban on any Tutor Perini work involving an MTA matter that he was directly involved in, the agency said.

“The responsibility for complying with ethics law lies squarely with Dr. Horodniceanu,” said Jon Weinstein, an MTA spokesman.

“As soon as the MTA learned of Dr. Horodniceanu’s appointment we immediately sought and received written assurance from him that he understood and would comply with the ethics rules.”

Horodniceanu called the MTA’s move “totally inappropriate in many ways.”

“I’m puzzled by that,” he told The Post. “I do not get involved with anything that has to do with MTA.”