Internships in St. Louis, MO
Explore internships in St. Louis, MO. Compare current employers, posting dates and disclosed pay, then check each role’s work arrangement and eligibility.
187 open roles at 82 employers, updated daily.
Showing 12 recent openings from this collection. Listings refresh as new roles arrive.
College Financial Representative, Internship Program
Northwestern MutualSt. Louis, Missouri, United StatesPosted Oct 9, 2026
NewWater/Wastewater Intern
HDRColumbia, Missouri, United StatesPosted Sep 2, 2026
NewPharmacy Grad Intern (Hrly) - $25,000 Sign On Bonus (2027 Grad Sign On Program)
WalmartSt. Louis, Missouri, United StatesPosted Oct 16, 2026
NewAI Solutions Co-Op
LUZCO TechnologiesSt. Louis, Missouri, United StatesPosted Aug 25, 2026
NewEngineering Co-Op
Nidec Motor CorporationSt. Louis, Missouri, United StatesPosted Oct 15, 2026
NewElectrical Engineering (Substation) Intern - Summer 2027
WSPSt. Louis, Missouri, United StatesPosted Oct 14, 2026
NewSummer 2027 Business Optimization Internship
Keeley ConstructionSt. Louis, Missouri, United StatesPosted Oct 14, 2026
NewSkilled Craft Education Program (GPPB)
AmerenSt. Louis, Missouri, United StatesPosted Oct 13, 2026
NewIntern, Investor Center - St. Louis, MO
Fidelity InvestmentsSt. Louis, Missouri, United StatesPosted Oct 13, 2026
NewSt. Louis Internal Audit and Financial Advisory Intern - 2027
ProtivitiSt. Louis, Missouri, United StatesPosted Oct 13, 2026
NewSkilled Craft Education Program (CAST-R)
AmerenSt. Louis, Missouri, United StatesPosted Oct 13, 2026
NewMechanical Engineering Intern - Summer 2027
Farnsworth GroupSt. Louis, Missouri, United StatesPosted Oct 11, 2026
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See all 187 rolesHow to land an internship in St. Louis, MO
How to land an internship in St. Louis, MO: start applying three to six months before your target start date, since the largest employers in the area fill their classes early. Tailor your resume to each posting's keywords, and mention your availability to work on-site — local availability is a real filter for many hiring teams. Reaching out to a recruiter for a quick coffee chat can move your application to the top of the pile.