Top 165 Senior support specialist Jobs in O'fallon, Mo

Accounts Receivable Specialist
Wiegmann Associates —Saint Charles, MO
- $25.57 - $30.79 an hour
- Full-time
- ERP systems
- Mid-level
- Office
- Paid holidays
- Health insurance
Quick Apply
Community Outreach Specialist - Personal Care Services / Home Health
Abricare, Inc. —Flint Hill, MO
- Experience working with individuals with disabilities
- Marketing
- High school diploma or GED
Quick Apply
Benefits & Leave Specialist
Cedarhurst Senior Living —St. Louis, MO
- HIPAA
- Mid-level
- Office
- Disability insurance
- Health insurance
Quick Apply
Operations Specialist (Traveling Executive Director) MO/IL/KY Region
Cedarhurst Senior Living —St. Louis, MO
- Full-time
- Background check
- Current TB test
- 5 years
- Disability insurance
- Health insurance
Quick Apply
Military Service - U.S. Air National Guard, Biomedical Equipment
Military Service - U.S. Air National Guard Recruiting —Missouri
- From $49,838.78 a year
- Full-time
- 18 years or older
- Military
- High school diploma or GED
- Health insurance
Office Support Specialist
Toyota Automated Logistics Americas LLC —Maryland Heights, MO
- Office
- Hotel
- Travel
- Paid holidays
- Health insurance
Quick Apply
Sr. Executive Support Specialist/VCC onsite
Mercy —Chesterfield, MO
- Full-time
- Mid-level
- Windows
- 3 years
- Health insurance
- Dental insurance
Supplier Quality Specialist (Experienced or Senior)
Boeing —Hazelwood, MO
- $99,450 - $164,450 a year
- Schematics
- 3 years
- Presentation skills
- Health savings account
- Disability insurance
4d
Logistics Specialist, Fulfillment Operations
Blink Health —Chesterfield, MO
- Evenings as needed
- Mid-level
- High school diploma or GED
- Continuous improvement
- Paid holidays
- Disability insurance
Quick Apply
Supply Base Management Spec (Supply Base Mgmt)
Boeing —Hazelwood, MO
- $99,450 - $122,850 a year
- 3 years
- Master's degree
- Travel
- Travel reimbursement
- Health savings account
7h
Senior Digital Media Specialist
Brinkmann Constructors —Chesterfield, MO
- Full-time
- Marketing
- 5 years
- Office
- Continuing education credits
- Paid parental leave
6d
Barnes St. Peters-Progress West PCT Training Program Fall 2026
BJC HealthCare —Saint Peters, MO
- $17.50 - $22.75 an hour
- Full-time
- Vital signs
- Hospital
- No experience needed
- Disability insurance
- Health insurance
Customer Experience Director
Crossroads Courier —St. Louis, MO
- $125,000 - $135,000 a year
- Monday to Friday
- Up to 50% travel
- 5 years
- Bachelor of Science
- Paid holidays
- Health insurance
Quick Apply
Orthoimagery Technician I
Bowman Consulting Group, Ltd. —Chesterfield, MO
- Full-time
- Hybrid work
- Microsoft Excel
- Microsoft Outlook
- Bachelor of Science
- Paid holidays
- Disability insurance
Mailroom & Customer Service Associate
Ricoh —Hazelwood, MO
- Full-time
- Computer literacy
- Mid-level
- High school diploma or GED
14d
HR Operations Specialist
Linxup —Chesterfield, MO
- Full-time
- Hybrid work
- Google Workspace
- Mid-level
- Office
- Health insurance
- Dental insurance
Quick Apply
Supplier Program Mgmt (Supplier Program Mgmt)
Boeing —Berkeley, MO
- $140,250 - $173,250 a year
- 18 years or older
- 5 years
- Master's degree
- Travel reimbursement
- Health savings account
4d
Senior Regulatory Affairs Specialist - Global Pet Care
Spectrum Brands —Earth City, MO
- Full-time
- Hybrid work
- Bachelor of Science
- Mid-level
- 3 years
- Work from home
Quick Apply
IT Support Specialist
Reinsurance Associate Inc. —Fenton, MO
- $50,000 - $62,000 a year
- Full-time
- Mid-level
- Office
- Windows
- AD&D insurance
- Paid holidays
Quick Apply
11d
Digital Marketing Support Specialist
Flat Branch Home Loans —Chesterfield, MO
- Full-time
- Mid-level
- Office
- Organizational skills
Quick Apply

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Accounts Receivable Specialist

Wiegmann Associates -
Saint Charles, MO

Quick Apply

Job Details

Full-time
$25.57 - $30.79 an hour

Benefits

Paid holidays
Health insurance
Dental insurance
Paid time off
Vision insurance
401(k) matching
Paid sick time

Qualifications

Customer communication
Teamwork
Attention to detail
Associate's degree
Account management
Time management

Full Job Description

Join our winning team at Wiegmann Associates!

Named one of St. Charles County's largest businesses by the St. Louis Business Journal
Recognized as a Winning Workplace by St. Louis Small Business monthly
Core Values = Innovation + Teamwork + Client Focus + Accountability + Passion

Wiegmann Associates is a growing nationwide design/build mechanical engineering and contracting firm based in St. Charles, MO with approximately 115 employees.

Since 1995 Wiegmann Associates has engineered and installed more than $1 billion in cost-effective and energy-efficient mechanical, HVAC and refrigeration systems in a wide range of industries including senior living, food and beverage distribution, healthcare, multi-family, office/warehouse, industrial and commercial. Wherever the project is located, Wiegmann Associates will complete it on time and within budget.

Accounts Receivable Specialist – Wiegmann Associates

The Accounts Receivable Specialist at Wiegmann Associates is responsible for supporting cash flow through accurate billing, collections, cash application, and customer account management for HVAC service and construction operations. This role works closely with project managers, service teams, customers, and general contractors to ensure timely invoicing, prompt collections, accurate records, and daily deposits while maintaining a high level of professionalism and customer service.

Key Responsibilities

Billing & Invoicing

Prepare and issue accurate invoices for HVAC construction projects, including:
Progress billing
Time & materials billing
Change orders
Retainage tracking

· Ensure invoices comply with contract terms and customer requirements.

· Submit invoices through required platforms (e.g., Textura, GC Pay, Procore, AIA billing formats, or customer portals).

· Maintain proper documentation to support billing (signed tickets, approvals, etc.).

Accounts Receivable Management

· Monitor customer accounts to ensure timely payment of outstanding invoices for construction projects and service work.

· Prepare and make daily bank deposits, accurately record incoming payments, and apply cash receipts to customer accounts.

· Maintain accurate accounts receivable aging reports and track past-due balances to support strong cash flow.

· Reconcile customer accounts, research payment discrepancies, and coordinate resolution with internal teams and customers.

Collections

· Proactively follow up with customers on overdue invoices.

· Communicate professionally with general contractors, subcontractors, and clients to resolve payment issues.

· Escalate delinquent accounts as necessary.

· Support lien waiver process and assist in filing preliminary notices if applicable.

Project & Contract Coordination

· Review contracts to understand billing terms, retainage, and payment schedules.

· Work closely with project managers, service department, and accounting staff to confirm billing milestones, job progress, and payment status.

· Track and manage change orders and ensure they are billed appropriately.

Reporting & Compliance

· Generate accounts receivable and cash activity reports for management, including aging summaries, collections updates, and cash flow forecasting.

· Maintain compliance with Wiegmann Associates policies, accounting procedures, and applicable construction billing requirements.

Assist with month-end closing, including AR reconciliation.

Qualifications

Education & Experience

· Associate’s or Bachelor’s degree in Accounting, Finance, or related field (preferred).

· preferably in construction, mechanical contracting, or the HVAC industry.

· Experience with progress billing and retainage is strongly preferred.

Skills & Competencies

· Strong understanding of construction billing processes (AIA billing, lien waivers, retainage).

· Excellent organizational and time management skills.

· High attention to detail and accuracy.

· Strong communication and customer service skills with the ability to work effectively with customers, project managers, and internal teams.

· Ability to manage multiple projects and deadlines simultaneously.

· Proficiency in accounting software and Microsoft Excel; experience with construction or ERP systems is a plus.

Environment

Office-based role with regular interaction with project managers and customers.
May require occasional deadlines tied to project billing cycles or month-end close.

Compensation & Benefits

Competitive salary based on experience
Health, dental, and vision insurance
401(k) with company match
Paid time off and holidays

Pay: $25.57 - $30.79 per hour

Benefits:

401(k) matching
Dental insurance
Health insurance
Paid sick time
Paid time off
Vision insurance

Application Question(s):

Which accounting software or construction-specific platforms have you worked with? Please list the systems and your level of experience
Please list any additional accounting department related skills you believe are relevant to this role.

Experience:

construction accounts receivable: 1 year (Preferred)
total accounting: 3 years (Required)

License/Certification:

related certification or formal training (Preferred)

Ability to Commute:

Saint Charles, MO 63301 (Required)

Work Location: In person

Quick Apply

Refine Your Search

senior support specialist jobs in o'fallon, mo

Accounts Receivable Specialist

Community Outreach Specialist - Personal Care Services / Home Health

Benefits & Leave Specialist

Operations Specialist (Traveling Executive Director) MO/IL/KY Region

Military Service - U.S. Air National Guard, Biomedical Equipment

Office Support Specialist

Sr. Executive Support Specialist/VCC onsite

Supplier Quality Specialist (Experienced or Senior)

Logistics Specialist, Fulfillment Operations

Supply Base Management Spec (Supply Base Mgmt)

Senior Digital Media Specialist

Barnes St. Peters-Progress West PCT Training Program Fall 2026

Customer Experience Director

Orthoimagery Technician I

Mailroom & Customer Service Associate

HR Operations Specialist

Supplier Program Mgmt (Supplier Program Mgmt)

Senior Regulatory Affairs Specialist - Global Pet Care

IT Support Specialist

Digital Marketing Support Specialist

I want to receive the latest job alert for senior support specialist in o'fallon, mo

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