It will likely be extremely hard to do. Your friend will need a work permit which requires a job offer and approved LMIA from the employer. The R186 exemption only applies to health care workers. The LMIA process is quite involved, will require the employer to prove no Canadian could be found for the role, and will take 4-6 months to process (without knowing if the LMIA will be approved),
What country is your friend from?