No. The engineer profession on the USMCA list is met by a baccalaureate or licenciatura degree or by a state or provincial licence, so a degree alone satisfies the qualification rule. What the licence cannot fix is a job that is not engineering.
The degree or the licence, but always engineering duties
Hypothetical example: the Oromocto applicant graduated in mechanical engineering but never registered as a professional engineer because the contractor did not require it. For TN the degree is enough to meet the qualification rule for the engineer profession. The remaining test is whether the dealer's position is engineering work. A letter that describes supervising a service bay, quoting repairs and managing parts inventory describes management or sales, and an officer may conclude the profession does not fit. Ask the employer to describe the analytical and design content honestly; if it is thin, TN under the engineer entry may not be the right fit and another listed profession or another category should be considered. Canadian citizenship, prearranged temporary work and the absence of self-employment remain separate requirements that the degree does not address.
Hypothetical example: a paper-mill process engineer has a mechanical engineering degree but the offer calls the role "maintenance coordinator." The first review should obtain the duty list, weekly allocation, organization chart, and the degree transcript. If the actual work is analyzing process failures, specifying equipment changes, and applying engineering principles, the employer can describe those facts. If the work is mainly assigning mechanics and ordering supplies, the record may not support the engineer entry. Resolve that distinction before relying on the degree; the degree proves the credential route, not the professional nature of any job. The citizenship document, prearranged employer relationship, and prohibition on self-employment must still be independently satisfied.