182 development assistant jobs at 93 companies in O'Fallon, MO

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Business Development Assistant - Sports
St. Louis, Missouri, United States
OnsiteFull Time
Select Medical
Select MedicalNYSE: SEM: Provides specialized inpatient and outpatient rehabilitation and recovery healthcare.
1+ YOEBS degree required, 1+ year athletic training clinical experience, NATA certification and CPR required, state license (MO/IL) preferred, experience with DorsaVi/VALD/C3 Logix a plus, strong communication skills.
DorsaVi, VALD, C3 Logix
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Business Development Assistant - Sports
St. Louis, Missouri, United States
OnsiteFull Time
Select Medical
Select MedicalNYSE: SEM: Provides specialty inpatient and outpatient rehabilitative healthcare services.
1+ YOEATC required, BS degree required, 1+ year AT clinical experience, NATA and CPR certified, state license (MO and ideally IL), experience with DorsaVi/VALD/C3 Logix preferred, strong communication and outreach skills.
DorsaVi, VALD, C3 Logix
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Laboratory Development Assistant (PRN) - Program in Physical Therapy
St. Louis, Missouri, United States
OnsitePart Time
Washington University in St. Louis
Washington University in St. Louis: A research university providing higher education and medical services.
1+ YOEBachelor's degree and minimum 1 year related experience; coaches students, monitors lab work, ensures safety and equipment sterilization; Microsoft Office proficiency.
Microsoft Office
2w
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Administrative Assistant (Development/Fundraising) (41574)
St. Louis, Missouri, United States
$18/hr OnsiteFull Time
Greater St. Louis Area Council
Greater St. Louis Area Council: Provides outdoor youth programs and leadership training in St. Louis.
Provide administrative and donor database support for development/fundraising; proficiency with Raiser's Edge and Microsoft; high school diploma or equivalent; strong organization, communication, and data entry skills.
Raiser's Edge, Microsoft
3w
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AI Development Specialist - Central & West Regions
Phoenix or San Diego or San Francisco or Los Angeles or Denver or Chicago or Detroit or Minneapolis or St. Louis or Kansas City
$150k-$180k/yr OnsiteFull Time
World Wide Technology
World Wide Technology: Global technology solutions provider and systems integrator.
8+ YOEMinimum 8 years in software engineering/dev tools sales or developer relations; deep knowledge of enterprise development practices and NVIDIA developer platform; Bachelor's in CS/SE required; experience with coding assistant market and consultative selling.
GitHub Copilot, Amazon Q Developer, Google Gemini Code Assist, Cursor, Claude Code, Windsurf, Devin, CUDA, cuDNN, TensorRT, RAPIDS, Triton Inference Server, CUDA toolkit, AI Workbench, NeMo, Omniverse SDK
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Office / Development Administrative Assistant
St. Louis, Missouri, United States
$34k-$38k/yr OnsiteFull Time
AmeriCorps St. Louis
AmeriCorps St. Louis: Provides volunteer-led disaster response and environmental conservation services.
2+ YOEAssociate degree preferred; 2+ years administrative experience (nonprofit preferred); strong organization, communication, and multitasking skills; proficiency with Google Workspace and Microsoft Office; experience with donor or database systems a plus.
Google Workspace, Microsoft Office Suite
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Assistant Director - Bayer Child Development Center
St. Louis, Missouri, United States
$59k-$74k/yr OnsiteFull Time
Bright Horizons
Bright HorizonsNYSE: BFAM: Provides child care, early education, and workforce education services.
2+ YOE2+ MgmtAssociate degree required (early childhood/education/child development), bachelor’s preferred; 2+ years leadership in child care/preschool; pass state/company background checks; knowledge of licensing, health, and safety standards.
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Assistant Cook, Child Development Laboratory Centers
Bridgeton, Missouri, United States
$15/hr OnsitePart Time
St. Louis Community College
St. Louis Community College: Public community college offering associate degrees and continuing education.
1+ YOEHigh school diploma, 1 year relevant food service experience, Serv-Safe credential (or complete within 30 days), ability to lift 50 lbs, pass background checks and health screenings required for child development center work.
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Assistant City Administrator/ Director of Community Development
O'Fallon, Illinois, United States
OnsiteFull Time
City of O'Fallon
City of O'Fallon: Municipal government providing public services to O'Fallon residents.
5+ YOEBachelor's in urban planning/geography/architecture or related; five years of progressive managerial experience; AICP certification preferred; Master’s degree preferred in urban planning or public administration.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Publisher, Web browsers, Desktop publishing, Basic web page design and development
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Assistant Director for Training, Development & Belonging (CS26-018)
Edwardsville, Illinois, United States
$46k-$51k/yr OnsiteFull Time
Southern Illinois University Edwardsville
Southern Illinois University Edwardsville: Public university providing comprehensive higher education and research.
1+ YOEBachelor's degree,1+ year education/training experience (Master's may substitute),experience in event planning,supervision,programming in DEI,customer service,and variable hours including occasional weekends and on-call emergencies.
2w
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Administrative Assistant, Student Employee (Career Development)
St. Charles, Missouri, United States
$15/hr OnsitePart Time
Lindenwood University
Lindenwood University: Private university providing undergraduate and graduate degree programs
Currently enrolled Lindenwood student in good academic and financial standing; routine customer service and clerical skills, strong written/verbal communication, organization, basic research, and ability to work on a computer for extended periods.
1mo
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Assistant Manager I
Saint Peters, Missouri, United States
OnsitePart Time
Dollar Tree
Dollar TreeNASDAQ: DLTR: Operates discount variety stores selling household and seasonal merchandise.
Part-time assistant manager with retail store operations, customer service, staff development, and basic merchandising duties.
1mo
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Assistant in Training
Des Peres, Missouri, United States
OnsiteFull Time
Buckle
BuckleNYSE: BKE: Retails casual apparel, footwear, and accessories for all ages.
Assist in store leadership, sales, merchandising, and training; recruit and develop teammates; manage store operations.
POS, iPad, Sales tools
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Classroom Assistant - LHS
Wildwood, Missouri, United States
$18-$19/hr OnsiteFull Time
Rockwood School District
Rockwood School District: Providing public K-12 education and student support services.
Requires substitute certification or 60 college semester hours; able to assist teachers, supervise students, develop instructional aids, and use MS Office and Google programs.
Microsoft Office, Google
1mo
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Laboratory Assistant
St. Louis, Missouri, United States
$16/hr OnsiteMultiple Commitments Available
Elemental Enzymes
Elemental Enzymes: Develops enzyme and peptide solutions for sustainable agriculture.
Pursuing a B.S. in biology/biochemistry/chemistry, basic wet‑lab knowledge, aseptic technique, reagent/media prep, instrument maintenance, ELN experience preferred, able to lift up to 45 lbs and follow BSL‑2 safety protocols.
Electronic laboratory notebook (ELN), autoclave, pipette, centrifuge, spectrophotometer, HPLC
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Assistant Scientist
Saint Louis, Missouri, United States
OnsiteFull Time
Terracon
Terracon: Provides geotechnical, environmental, construction, and facilities engineering services.
Bachelor’s degree in Environmental Science or related field; valid driver's license; non-degred candidates considered; preferred field certification.
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Research Assistant - Pathology & Immunology
St. Louis, Missouri, United States
$17-$29/hr OnsiteFull Time
Washington University in St. Louis
Washington University in St. Louis: Providing higher education and conducting advanced academic research.
2+ YOEBachelor’s degree or equivalent experience; 2 years laboratory operations experience; experience with mouse handling, flow cytometry, CRISPR-Cas9 preferred; ability to work with biological hazards and maintain lab documentation.
Flow cytometry, CRISPR-Cas9
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Assistant Manager
Breckenridge Hills, Missouri, United States
$19-$20/hr OnsiteFull Time
Flynn Group
Flynn Group: Operates large-scale restaurant and fitness center franchises.
Leading and developing restaurant teams, training staff, overseeing daily store operations, and supporting growth initiatives.
3w
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Assistant Nurse Manager - Operating Room
Chesterfield, Missouri, United States
OnsiteFull Time
St. Luke's Hospital
St. Luke's Hospital: Provides comprehensive inpatient and outpatient medical and surgical care.
Bachelor's degree in Nursing, current Missouri RN license, operating room nursing experience, assists with staff scheduling, development, and performance monitoring, and communicates patient care plans.
1mo
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Assistant Manager
O'Fallon, Illinois, United States
OnsiteFull Time, Part Time
Chicken Salad Chick
Chicken Salad Chick: Fast-casual restaurant chain specializing in various chicken salad flavors.
Managing restaurant operations including sales, cost control, hiring/training/retention, guest service, product quality, sanitation, cash handling, scheduling, and staff development.