He is known for his work at the Ukrainian Southern Railways where under his leadership number of rail-lines were electrified.

Locomotives», same year Ostapchuk conferred a Candidate of Technical Science degree in specialty «Car building Technology», another candidate degree he conferred in 2007 in the Department of materials and technologies of transport products issued at the Ukrainian Academy of Railway Transport In March 2012 he received a degree of Doctor of Technical Science on specialty in Use and Repairing of Transport Means.

Ostapchuk started out in late 1970s at the Kirov locomotive shop located near Osnova railway station in Kharkiv.

Ostapchuk was one of the 36 members of the Party of regions faction (who consisted of 96 deputies) who voted in favour of the impeachment of President Viktor Yanukovych in February 2014.

[5] Ostapchuk was again a candidate of the Opposition Bloc, in election district #177 during the 2019 Ukrainian parliamentary election, but he finished in second place with 26.97% of the votes, and thus lost his parliamentary seat to Dmytro Liubota of Servant of the People who gained 40.26% of the votes.