30 2026 intern jobs at 16 companies in Ballwin, MO
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Intern to Intern Conversion – Business Functions (All) (Summer 2026 Intern Program)
Everett or Huntsville or Charleston or Tinker Air Force Base or Oklahoma City or Berkeley or Huntington Beach or Hazelwood or Germantown or El Segundo or China Lake or Arlington or Ridley Park or Tukwila or North Charleston or Kennedy Space Center or Fairfax or Houston or Colorado Springs or Chicago or Long Beach or Renton or Saint Louis or Dallas or Seattle or Auburn or Philadelphia or San Antonio or Kent or Mesa
$38k-$64k/yrOnsiteFull Time, Internship
BoeingNYSE: BA: Designs and manufactures aircraft, satellites, and defense systems.
Must be enrolled in a bachelor's or higher program (graduation on/after Aug 2027), be available full-time for a 10-12 week Summer 2027 internship, and have previously interned with Boeing.
Girl Scouts of Eastern Missouri: Empowering girls through leadership, community, and outdoor educational programs.
Enrolled in an associate, bachelor's, or graduate program (≥1 semester completed), pursuing a relevant field; available 20–30 hrs/week; eligible for college credit; paid minimum wage.
Recruiting Intern Summer 2026 - Distribution |St. Louis, MO
Creve Coeur, Missouri, United States
$17-$18/hrOnsiteMultiple Commitments Available
BunzlLondon Stock Exchange: BNZL: Global distributor of essential non-food consumables and services.
Pursuing a Bachelor's in HR/Business, available full-time onsite Summer 2026 (40 hrs/wk). Responsibilities include screening candidates, scheduling interviews, using ATS and Microsoft Teams, and supporting recruiting operations.
Microsoft Teams, LinkedIn, Applicant Tracking System (ATS)
HOK: Global architecture, engineering, and planning design firm.
Currently enrolled in an architecture program; available ≥20 hrs/week with majority onsite Tue–Thu in St. Louis; basic hand and CAD/BIM drafting skills; Revit preferred; portfolio and resume required.
Support Services Intern (Part time - Fall Semester 2026)
Chesterfield or St. Louis
$15/hrOnsitePart Time, Internship
ATB Technologies: Provides managed IT services and cybersecurity for mid-sized organizations.
Currently enrolled college student in a relevant IT field, basic proficiency with Windows/Mac/mobile devices, strong communication and problem-solving, 20+ hours/week onsite for Fall 2026, familiarity with networking/cloud and IT certifications a plus.
SiemensXETRA: SIE: Manufactures industrial automation, infrastructure, and energy technology systems.
0+ YOEUniversity student (sophomore or above) with minimum 3.0 GPA, available part-time starting Fall 2026, authorized to work in the U.S. without sponsorship; strong written communication, research and project coordination skills; no prior experience required.
Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hrOnsiteFull Time, Internship
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE/SE or related; experience with Python and Linux; familiarity with ML lifecycle; teamwork and CS fundamentals; interest in performance benchmarking and containers.
International Institute of St. Louis: Providing comprehensive resettlement and support services for immigrants.
Organized, reliable students with strong communication skills who can work independently and in teams; interest in nonprofit or social impact; availability for a semester at 10–20 hours/week.
AI Agent & Data Quality Intern (Part Time - Fall Semester 2026)
Chesterfield, Missouri, United States
$15/hrOnsitePart Time, Internship
ATB Technologies: Provides managed IT services and cloud solutions for businesses.
Currently enrolled student or recent graduate with strong interest in AI, attention to detail, experience using AI tools, ability to test and document agent behavior, and ability to work on-site at least 20 hrs/week.
Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hrOnsiteFull Time, Internship
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE or related; experience with Python and Linux CLI; familiarity with ML lifecycle, teamwork, and interest in performance benchmarking and GPU-accelerated workloads.
Florence Y'alls: Professional independent baseball team in the Frontier League.
College-credit internship; authorized to work in the U.S.; valid driver's license; able to lift up to 50 lbs; available for long days, evenings, weekends, and holidays; teamwork and problem-solving skills required.
Sports Management, Tournament Operations Internship | 2026 Fall
O'Fallon, Missouri, United States
FieldInternship
Lafayette Aviators: Collegiate summer baseball team and sports entertainment provider.
Internship providing experience in event management, marketing, logistics, staff management, POS operation, and customer service for youth and high school baseball/softball tournaments.
Greater St. Louis Area Council: Provides outdoor youth programs and leadership training in St. Louis.
High school diploma or current college student; strong written and verbal communication; Microsoft Office proficiency; interest in non-profit/Scouting; approximately 20 hrs/week; internship term 12–16 weeks (Fall 2026).
$445K + Compensation Package | Internal Medicine Physician with Mercy Hospital Washington, MO
Washington, Missouri, United States
$445k/yrOnsiteFull Time
Mercy: Operates hospitals and clinics in the Midwestern United States.
Board certified or board eligible in Internal Medicine; ability to build and manage a large patient panel; familiarity with Epic EMR; summer 2026 start preferred.
$445K + Compensation Package | Internal Medicine Physician with Mercy Hospital Washington, MO
Washington, Missouri, United States
$445k/yrOnsiteFull Time
Mercy: Integrated health care system providing hospital and clinical services.
Board certified or board eligible internal medicine physician; experience with Epic EMR and AI Dax Co-pilot preferred; ability to join an established primary care practice; summer 2026 start.