It does not take much to run afoul of sanctions on a country that has total embargo status. Even normally legal counsel advice may be prohibited to US persons to provide ( sorry for odd syntax ). In other words, OP does not have to deal with anything beyond normal IT work and still could be restricted on what information he can provide.

Not to search too far, although that is a more exotic example, recently crypto guy got smacked for providing crypto speech ( classified as technical advice ) to DPRK(1).

(1)https://www.justice.gov/opa/pr/us-citizen-who-conspired-assi...