290 operations assistant jobs at 119 companies in Sullivan, MO

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Assistant Manager – Operations & Marketing
O'Fallon, Missouri, United States
$44k-$50k/yr OnsiteFull Time
Big Blue Swim School
Big Blue Swim School: Provides professional swimming lessons and water safety instruction.
Supervisory experience preferred, strong communication and organization, comfortable with community outreach and social media, ability to lift 30 pounds, stand for extended periods, and work mid-shifts, evenings, and weekends.
1w
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Accounting Associate and Operations Assistant
St. Peters, Missouri, United States
OnsiteFull Time
Didion Orf Recycling
Didion Orf Recycling: Recycles scrap metal and end-of-life electronics.
Accounting and operations support including accounts payable/receivable, QuickBooks Online and Excel proficiency, reconciling statements, customer service, scale house operations, and ability to work in an industrial environment.
QuickBooks Online, Microsoft Excel, Microsoft Office
2mo
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Assistant Manager
Valley Park, Missouri, United States
OnsiteFull Time
Midwest Petroleum Company
Midwest Petroleum Company: Operator of retail convenience stores and fuel stations.
2+ YOEAssistant Manager role requiring high school diploma and 2 years of customer service/retail management experience; assist store manager and daily store operations.
1mo
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Assistant Vice President - Operations Support Manager - Hybrid
O'Fallon, Missouri, United States
$73k-$109k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
5+ Mgmt5+ years managing teams, experience analyzing business requirements, developing test plans, strong communication, problem-solving, and ability to work independently; bachelor\u0002s degree or equivalent experience.
1mo
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Assistant Vice President - Operations Support Manager - Hybrid
O'Fallon, Missouri, United States
$73k-$109k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
5+ YOE5+ Mgmt5+ years managing teams, experience analyzing business requirements and test plans, strong problem-solving, communication, and time-management skills; Bachelor’s degree or equivalent experience.
1mo
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Medical Assistant, Center Operations Manager
O'Fallon, Missouri, United States
OnsiteFull Time
CareATC
CareATC: Provides employer-sponsored primary care and population health management services.
2+ YOERegistered/certificated MA or 5+ years MA experience; high school diploma; classroom-led AHA BLS/CPR card; current clinical license as required; 2+ years CareATC operations experience or 3–5 years leadership preferred; EMR and practice management proficiency; clinical skills (EKG, venipuncture, injections); required immunizations.
Practice Management, Electronic Medical Records (EMR), EKG
2mo
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Assistant Manager
Sullivan, Missouri, United States
$40k-$45k/yr OnsiteFull Time
The Road Inc
The Road Inc: Operates a network of Denny's franchise restaurants.
Experience supervising restaurant staff; manage front/back-of-house operations; focus on profitability, safety, sanitation, and sales growth; ability to work nights, weekends, and holidays.
2w
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Assistant Manager
Washington, Missouri, United States
$26-$28/hr OnsiteFull Time
Club Car Wash
Club Car Wash: Operates an extensive network of automated car wash facilities.
Lead and train team, manage daily operations, provide excellent customer service, work outdoors and stand long periods, pass drug screen and background check.
3mo
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(18yrs+ to apply) Assistant Produce Manager - Seven Hills
O'Fallon, Illinois, United States
$16-$21/hr OnsiteFull Time
Schnucks
Schnucks: Midwest supermarket chain providing groceries and pharmacy services.
Assist Produce Manager in daily store operations; full-time role; internal candidates preferred; good standing; interview approval based on performance.
1mo
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Assistant Store Leader - Operations
Des Peres, Missouri, United States
OnsiteFull Time
Stand Out For Good
Stand Out For Good: Retailer of women's apparel, lifestyle products, and home decor.
1+ YOE1 year retail management experience, ability to lift and carry 30 lbs, perform prolonged standing and physical tasks; bachelor’s degree preferred.
1d
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Assistant Manager I
Wildwood, Missouri, United States
OnsitePart Time
Dollar Tree
Dollar TreeNASDAQ: DLTR: Operates discount variety stores selling household and seasonal merchandise.
Retail store management preferred; high school diploma preferred. Requires communication, customer service, organization, problem-solving, physical lifting up to 55 pounds, and ability to follow operational directives.
2w
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Assistant Store Manager
Linn, Missouri, United States
OnsiteFull Time
MFA Oil
MFA Oil: Supplies energy products and operates retail convenience stores.
Ability to supervise store operations, provide customer service, handle cash and inventory, perform physical tasks up to 50 lbs, valid driver’s license, able to work all shifts including weekends and holidays, pass background/drug screen.
Point of Sale
2mo
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Assistant Manager
Saint Louis, Missouri, United States
$21/hr OnsiteFull Time
Valvoline
ValvolineNYSE: VVV: Provider of automotive preventive maintenance and oil change services.
0+ YOESix months of supervisory experience; ability to lift up to 50 lbs; high school diploma or equivalent; English fluent; customer service orientation.
3mo
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Assistant Manager
Richland Center, Wisconsin, United States
OnsiteFull Time
TMart
TMart: Operates multi-brand quick-service restaurant franchises across the Midwest.
Restaurant supervisory experience; 18+; coach crew; ensure brand standards; basic computer skills; high school diploma.
POS, Computer Skills
1mo
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Assistant Manager
Rolla, Missouri, United States
$50k-$70k/yr OnsiteFull Time
Parachute
Parachute: Operates technology-driven centers for human plasma donation.
2+ MgmtHigh school diploma/GED, 2+ years supervisory or leadership experience, ability to lift 50 lbs., stand or sit long periods, enter cold environments, work day/evening/weekend/holiday/extended shifts; travel for training provided.
2mo
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Assistant Manager
Rolla, Missouri, United States
OnsiteFull Time
United PF Management
United PF Management: Operator of Planet Fitness franchise gym locations.
18+, HS diploma, customer service, leadership experience, capable of leading a team in a retail/fitness environment.
3w
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Store Assistant
St. Peters, Missouri, United States
OnsiteFull Time
Circle K
Circle KToronto Stock Exchange: ATD: Operates a chain of convenience stores and fuel stations.
Assist store operations including hiring, supervising staff, merchandising, cash handling, and maintaining safety; retail or supervisory experience and food handling experience are advantageous.
1mo
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Teammate - On Field Operations
St Peters, Missouri, United States
$15-$22/hr OnsitePart Time
Dick's Sporting Goods
Dick's Sporting GoodsNYSE: DKS: Omnichannel retailer of sports equipment, apparel, and footwear.
High school diploma or equivalent; assist with merchandising, product availability, pricing, signage, and delivering excellent athlete/customer experience.
1w
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Fall 2026 Stadium Operations Internship
O'Fallon, Missouri, United States
OnsiteInternship
Lafayette Aviators
Lafayette Aviators: Collegiate summer baseball team and sports entertainment provider.
Willingness to learn, energetic, able to perform stadium upkeep, assist management with events, inventory, purchasing, preventative maintenance, and provide customer service.
2w
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Maintenance Assistant
St Louis, Missouri, United States
OnsiteFull Time
Costco
CostcoNASDAQ: COST: Operates a global chain of membership-only warehouse clubs.
Perform janitorial and general maintenance in a warehouse, operate floor-scrubbing and maintenance equipment, perform routine repairs, assist with grounds upkeep and snow/ice removal, and follow safety procedures.