Langan Engineering & Environmental Services Chemical Engineering internships

As of November 11, 2026, Intern Insider listed 3 open Chemical Engineering internships at Langan Engineering & Environmental Services, in Austin, Texas, Doylestown, Pennsylvania, Houston, Texas and Philadelphia, Pennsylvania: Intern/Co-op - Environmental Permitting & Compliance and Intern/Co-op – Environmental Permitting & Compliance. 3 of these 3 listings state that the role is paid. This page does not invent a salary when the listing is silent. Browse the roles by employer below. You can read the full posting free, then apply in minutes with a free account.