Internships in Florissant, Missouri, United States

JLL seeks a summer intern in Performance Management to support data-driven insights, process improvement, and workplace optimization. The role involves data analytics, storytelling, and collaboration across teams to enhance business performance.

JLL invites motivated students to join its Business Intelligence team for a summer internship in Atlanta, GA. Interns will work on data analysis, visualization, and automation projects that support real‑estate decision making. They will collaborate with stakeholders, build dashboards in Tableau, write SQL queries, and contribute to forecasting and reporting.

Early Careers Intern – HVAC at JLL offers hands‑on training in HVAC systems maintenance and operations. Interns shadow experienced technicians, perform preventative maintenance on air handlers, chillers, boilers, and control systems, read mechanical drawings, diagnose issues with testing equipment, document activities in facility management systems, support energy‑efficiency initiatives, and attend technical training.

College Intern – Resort Operations at Marriott Vacations Worldwide offers a 3‑ or 6‑month internship focused on hands‑on experience across resort operations. Interns gain in‑person, on‑site exposure in departments such as Housekeeping, Food & Beverage, Safety & Security, Front Office, and Recreation/Activities.

The Store Executive Intern (Store Leadership Intern) is a paid 40‑hour per week internship focused on developing future retail leaders at Target. Interns work on‑site across 13 store locations in the East St. Louis, MO area, receiving hourly pay of $26.00–$27.00. The program offers hands‑on training in guest service, sales, merchandising, and team management under the guidance of an Executive Team Lead mentor.

WEX Inc., a global commerce platform, invites students to join its 13‑week paid internship in the Over‑the‑Road fleet division. Interns will rotate across Finance, Inside Sales, and Operations while traveling with Outside Sales reps to engage fleet owners.

General Practicum program at Pattonville High School provides hands‑on experience for students interested in athletics and activities. Stipends of $600 are offered for up to ten participants during the 2026‑2027 school year.

Member Experience Administrator on NSTXL’s Membership team, a national security tech accelerator that matches government needs with private-sector innovation. The role manages member inquiries, CRM data, onboarding, renewals, and email campaigns, ensuring smooth operations and high engagement across the OTA ecosystem.

Recovery Support Technician Intern at Chestnut Health Systems provides unpaid support to adults in substance use recovery across Metro East and St. Louis areas. Interns promote recovery model, trauma-informed care, and self‑advocacy, maintain documentation, assist with referrals, and support program operations.

Motion/Robotics Engineer Co‑Op at Nidec Motor Corporation’s Motion Control Engineering division. The role supports newly awarded robotics/material handling automation projects by managing component databases, issuing purchase orders, and tracking supplier lead times.

Copeland, a global climate technologies company, offers a 3-4 month paid Mechanical Engineering Internship in Advanced Manufacturing Engineering. Interns work on real projects across manufacturing, quality, procurement, sales, materials, and management, gaining hands‑on experience in CAD/3D modeling, machining, data analysis, Lean, automation, and simulation tools such as Oracle, Teamcenter, PCDMIS, Siemens NX, Inventor, and Lighthouse.

Resident Services Intern at Mac Properties, a private residential real‑estate company, supports the St. Louis team in delivering best‑in‑class customer service. The role handles phone, email, chat, and in‑person inquiries, coordinates resident projects, inspects apartments, and assists with move‑in and renewal tasks.

Copeland seeks a Data Analyst Intern to support customer experience by analyzing delivery data, identifying trends, and building dashboards. The role offers real projects, mentorship, and a 3‑4 month paid internship in St. Louis, with opportunities to collaborate across departments and contribute to sustainable solutions.

Copeland Accelerate Rotational Program 2026 is a 2‑year internship rotating through engineering and operations across U.S. locations, offering real projects, capstone work, mentorship, and global exposure. Participants gain 360° business insight, develop cross‑functional skills, and prepare for advanced roles.

Gray Media Training Program at KMOV, Maryland Heights, MO. The 10‑week immersive internship lets participants step into roles such as producer, meteorologist, or sales executive, creating on‑air stories, digital content, and ad campaigns while collaborating with seasoned professionals. Interns work 25 hours per week on‑site at the station, gaining hands‑on experience and building a portfolio for future full‑time opportunities.

Marketing Team at HungryPanda focuses on expanding brand awareness within the US Chinese community and university campuses. The intern will assist in planning and executing campaigns, develop partnerships with student clubs, manage WeChat community engagement, and support on‑ground promoters while collecting performance data.

Copeland invites mechanical engineering students to a 3‑4 month paid internship focused on manufacturing, quality, and simulation. Interns will work on real projects, receive mentorship, and collaborate across departments to improve processes and product performance.

Stewardship Intern at Coalition Life, the nation’s largest professional pro‑life sidewalk counseling organization, supports donor relations, fundraising operations, and event coordination. The role drafts stewardship letters, maintains donor records in Salesforce, generates reports, conducts prospect research, and assists with event logistics.

Wealth & Investment Management (WIM) at Wells Fargo delivers personalized wealth, investment, and retirement solutions to clients. As a Summer Intern you will support high‑net‑worth client teams, conduct financial analysis, and contribute to process improvement projects while gaining hands‑on experience across investment, analytics, and project management.