20 Results for

Internship Jobs in Clayton, MO

Jobs

Madison & St Clair Counties, IL9 days ago

OverviewChestnut Health Systems is offering a Practicum/Internship opportunity for master’s-level students seeking hands-on clinical experience in substance use and behavioral health treatment. This placement provides direct experience working with adults in residential and intensive outpatient programs, with opportunities to...

St. Louis, MO30+ days ago

$23–$24 Per Hour

These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State._. If you will be working at home occasionally or permanently, the internet connection must be obtained through a cable broadband or fiber optic internet service provider with speeds of at least 10Mbps download/5Mbps upload.

St. Louis, MO30+ days ago

$22–$35 Per Hour

To be considered, candidates must demonstrate the following qualifications through their resume, including relevant coursework, school projects, internships, co-ops, or professional experience: + Education: Currently enrolled in a Bachelor’s or Master’s program in technical disciplines such as Computer Science, Data Science, Cybersecurity, Engineering, or a closely related field. Build Community & Connections: Our interns thrive in a vibrant, supportive community—connecting through curated events, cross-functional projects, employee resource groups, and peer-driven initiatives that foster lasting relationships and professional growth.

St. Louis, Missouri30+ days ago

$2,000–$5,000 Per Month

At Premier, our founders started as college grads chasing an opportunity — and built one of America’s most respected roofing companies. Build leadership, resilience, and goal-setting skills that will serve you long after summer ends.

New!

Clayton, MO4 days ago

Having this internship gave me a huge advantage because I could talk about real cases I worked on and show I wasn’t just another Finance major with textbook knowledge. “This internship program gave me great insight into skills that I am using in my own life to make sure I am being financially prudent as a young adult.

Maplewood, MO30+ days ago

We’re looking for a Social & Influencer Creative Intern who lives and breathes social media, understands internet culture, and is excited to help brands show up in a real, engaging way. This role is perfect for a fast paced creative who can spot trends, build relationships, and help bring campaigns to life.

Berkeley, MO30+ days ago

Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. Working directly with JLL's experienced HVAC technicians, you'll learn essential technical skills through practical application while supporting our facilities management teams.

St. Louis, MO30+ days ago

Assist sales project managers in scheduling, coordinating, and presenting when necessary at workshops, seminars, lunch and learns and other business development opportunities. Louis and proudly employee‑owned through our ESOP, we are the nation's largest specialty contractor, restoring and protecting building envelopes through expertise in facades, concrete, roofing, and waterproofing.

New!

St Charles, MO3 days ago

Intern

We are interested in Master's-level students who are currently enrolled in or have completed relevant coursework in a Master'sProgram in Counseling, Social Work, Marriage and Family Counseling, Art Therapy, or other approved and related degree. Racial equity, diversity, and inclusion are core institutional values for Youth In Need, and we commit to developing an organization that is affirming, inclusive, and equitable.

ST. PETERS, MO30+ days ago

As you progress through the 12-week Management Internship program, your General Management team, Department Managers, and Store Team Members will work alongside you to develop your understanding of our business and help prepare you to take on a management role in the near future! Our Management Internship is a paid, hands-on training program designed to develop and prepare you for the world of Retail Management.

New!

Chesterfield, Missouri4 days ago

$500–$1,000 Per Year
Intern

Our college financial representatives, who come from varying academic backgrounds and experiences, begin to build a financial planning practice while engaging local and nationwide experts, exclusive financial products, and the support of a Fortune 500 company. Overview: College Financial Representatives in the internship program at Northwestern Mutual are provided guidance, connection, and a framework for building an integrated financial planning practice from the ground up.

St. Louis, MO30+ days ago

The Enterprise Mobility Supervisor Trainee Internship is your fast track to building real-world business acumen, leadership skills, and a career that goes far beyond the classroom. When you join our Supervisor Trainee Internship Program, you'll soon discover that every day is different because it is filled with new, exciting, rewarding and often unexpected opportunities.

Godfrey, IL21 days ago

Proactively research and identify new opportunities via outbound efforts utilizing university relationships, word of mouth, LinkedIn, social media platforms, networking, direct referrals, etc. Shall not misrepresent the nature of the school, facility, programs, expected outcome of training, employment, salary expectations, etc. in any way, either directly or indirectly, implied or omitted.

St. Louis, Missouri30+ days ago

LS Power actively invests in and scales businesses that are meeting the growing needs of the energy expansion, including electric vehicle charging, demand response, microgrids, renewable fuels and waste-to-energy platforms. Founded in 1990, LS Power is a premier development, investment, and operating company focused on the North American power and energy infrastructure sector, with leading platforms across generation, transmission and energy expansion solutions.

O'Fallon, Missouri30+ days ago

St. Louis, MO30+ days ago

Roxana, IL30+ days ago

$2,894–$3,308 Per Week

Through its refining business segment, Phillips 66 is upgrading crude oil and other feedstocks into higher-value petroleum products including clean-burning gasoline, ultra-low-sulfur diesel, jet fuel, lubricants, petroleum coke and other specialty products while maintaining a high regard for safety and environmental limitations. Areas of focus may include optimization of an existing process, improving energy efficiency, handling key logistics, improving equipment reliability, monitoring emissions or completing permit applications, optimizing the use of equipment by finding and eliminating defects, using sophisticated modeling and data analysis software tools.

St. Louis, MO28 days ago

Full-time

From homes and workplaces to infrastructure and precious landmarks, RPM’s market-leading brands are trusted by consumers and professionals alike to help build a better world. This immersive 12-week program (Anticipated: May 18, 2026 - August 7, 2026), offers a unique opportunity to gain valuable experience, build lasting connections, and make a meaningful impact—all before heading back to campus.

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Internship Jobs in Clayton, MO

Jobs

Student Internship / Practicum ClinicianChestnut Health Systems

Finance Summer InternshipThe Cigna Group

Pharmacy Underwriting Summer Internship ProgramThe Cigna Group

Technology Development Program (TECDP) Summer Internship 2026The Cigna Group

2026 Paid Summer Internship – Sales Representative at Premier RoofingPremier Roofing Company

Financial Planning Department InternshipNorthwestern Mutual - Clayton

Social & Influencer Creative InternshipMoosylvania

HVAC InternshipJones Lang LaSalle Incorporated

2026 Summer/Autumn Internship ApplicationWestern Specialty Contractors

MA-Counseling InternshipYouth In Need Internships and Volunteers

Management InternshipMenards

College Financial Representative, Internship ProgramNorthwestern Mutual

Supervisor Trainee Internship Fall 2026Enterprise Holdings

Medical Device Sales - Paid InternshipMedical Sales College

Transmission Planning Engineer InternshipLS Power Development, LLC

Precision Machinist Internship – Tool & Die ShopTrue Manufacturing

Express Scripts Summer Intern - 2026The Cigna Group

Human Resources Leadership Development Program - Summer Intern (On-Site)The Cigna Group

2026 University Intern - Wood River Refining EngineerPhillips 66

Marketing: Graphic Design Intern - Summer 2026Carboline Global Inc.

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