mountebanked

/ˈmaʊntəˌbæŋkt/
verb
  1. Acted as a mountebank; deceived or tricked people by pretending to have skills or knowledge.
    • The con artist mountebanked for years before anyone caught on to his lies.
    • She mountebanked the investors with false promises of huge returns.
    • He mountebanked his way into the company by claiming to be an expert engineer.