Welcome to Waste Resource Management (WRM)

At Waste Resource Management (WRM), we go beyond operating trucks —we are dedicated to environmental protection and delivering exceptional service. With a presence across Texas, Colorado, Florida, and Nevada, our affiliated companies—SouthWaste Disposal LLC, Silver City Processing, and McDonald Farms, Inc.—offer comprehensive solutions for liquid waste recycling and transportation.

Join a Company That Values You

At WRM and affiliated companies, your work matters—for the environment, our clients, and your career. If you’re ready to drive for a company that pays well, offers a competitive benefits package, operates safely, and supports your growth, we want to hear from you.

Job Overview

As Office Manager, you will lead the financial and administrative operations out of our Denver, CO office, with primary responsibility for accounts receivable, billing, and collections performance. This role is accountable for ensuring accurate and timely invoicing, driving collections efforts, and optimizing cash flow through disciplined revenue cycle management.

In close partnership with the Corporate Controller and Accounts Receivable/Accounts Payable teams, the Office Manager owns local billing execution, collections follow-up, and work order administration, ensuring alignment with corporate financial policies and procedures. This position plays a critical role in improving revenue capture, reducing days sales outstanding (DSO), and maintaining the integrity and accuracy of financial data.

Additionally, the role supports audit readiness, compliance reporting, and operational data management, while identifying and implementing process improvements to enhance billing efficiency, strengthen accountability, and drive consistent financial performance across the Denver operation.

Why join WRM and affiliated companies?

• Competitive Salary Pay: Market-based salary aligned with experience and role scope, with annual performance reviews and merit-based increases tied to both individual contributions and overall company performance
• Comprehensive Benefits: Choose from one of three medical plans, based on your needs, dental, and vision coverage; along with 401(k) with 5% company match
• Career Growth: Training programs and advancement opportunities in wastewater operations and environmental services
• Paid Time Off: Generous PTO policy accrues from day 1, floating and company paid holidays.
• Additional Perks: Company-paid life and disability insurance, employee assistance program, and more
• Supportive Leadership: Leadership that values safety, professionalism and growth

Essential Job Functions

• Manage the work order process, including creation, review, reconciliation of changes, and verification of pricing accuracy in accordance with customer agreements.
• Oversee local accounts receivable activities, including invoicing, billing accuracy, payment application, aging review, and collection support.
• Perform regular accounts receivable aging and collections analysis; escalate issues and support resolution of delinquent accounts.
• Audit work orders, billing, and related documentation to identify and resolve discrepancies in a timely manner.
• Serve as the primary point of contact for escalated customer inquiries related to billing, invoicing, and payment issues while maintaining positive client relationships.
• Manage waste manifests, compliance documentation, and operational data systems; ensure accurate reporting and record retention.
• Support local budgeting, forecasting, and basic financial analysis in coordination with the Controller and site leadership.
• Collaborate with internal teams and external auditors to support internal controls, internal audits, and annual audit activities.
• Identify opportunities to improve accounts receivable, accounts payable, and administrative workflows; recommend and implement process improvements.
• Oversee daily office operations, including administrative procedures, office systems, vendor coordination, and general office management.
• Ensure proper use, accuracy, and maintenance of accounting and operational systems used at the site level.
• Manage competing priorities and ensure deadlines are met in a fast‑paced operational environment.
• Perform other duties as assigned.
• Other duties as assigned.

What We’re Looking For:

• Bachelor’s degree in Accounting, Finance, Business Administration, or a related field preferred.
• 3–5 years of progressive experience in accounting, accounts receivable, office administration, or operations administration; prior supervisory experience preferred.
• Strong working knowledge of accounting principles, financial reporting, internal controls, and accounts receivable and collections practices.
• Proficiency with accounting systems and Microsoft Office applications, with strong Excel skills.
• Strong analytical, organizational, and communication skills with high attention to detail.
• Ability to manage multiple priorities and deadlines in a fast‑paced environment.
• Demonstrated ability to work independently while collaborating effectively across departments.
• Proven problem‑solving skills with the ability to identify issues and implement practical solutions.
• High ethical standards and integrity in handling financial, operational, and customer information.

Supervisory Responsibilities

• Provides direct supervision to a small team of accounts receivable and/or administrative staff performing transactional and administrative work.
• Responsible for training, coaching, performance feedback, and day‑to‑day work oversight.

Equal Opportunity Employer

WRM is dedicated to fostering a diverse and inclusive workplace. We offer equal employment opportunities regardless of race, religion, gender, age, sexual orientation, veteran status, or disability.

Salary : $85,000 - $100,000