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Accounts Receivable Specialist

Job in Seattle, King County, Washington, 98127, USA
Listing for: Macdonald-miller Facility Solutions
Full Time position
Listed on 2026-01-12
Job specializations:
  • Business
    Accounts Receivable/ Collections
Job Description & How to Apply Below

At Mac Donald-Miller Facility Solutions (“Mac Miller”) we make buildings work better. As the Northwest’s leading mechanical contracting firm, we design, deliver and service HVAC, plumbing and automation system solutions for commercial buildings. With our over one thousand employees across 14 offices, there is a breadth and variety of work to keep you engaged and inspired.

We enjoy a well-respected history of exceeding our customers’ expectations and executing with distinction. Our clients trust their toughest projects with our integrated teams, including:

  • New construction – Engineering, fabrication and install of mechanical systems for new projects following lean construction practices
  • Special projects – Retrofits and mechanical repairs for existing buildings for new efficiencies
  • Service - scheduled preventative maintenance ensuring tenant comfort, and 24/7 emergency response
  • Building performance – Control systems, fault detection, energy services and remote monitoring
  • Performance Contracting -- Sustainable Solutions:
    Acting as the Prime Contractor, we deliver design-build energy-efficient solutions in the built environment for private and public sector clients

People love to work at Mac Donald-Miller, and it’s because we all share the same Core Culture Values:

  • Collaboration – Diverse players, one team, a common vision. Collaboration is our foundation and critical to the success of the company. Every team member is valued and brings a diversity of strengths to help us meet our common vision.
  • Dedication
    We are dedicated to personal and professional excellence. We execute with distinction by doing the right thing and following through on our commitments.
  • Safety
    Everyone deserves a safe workplace. Safety is more than hardhats and boots, it’s an attitude and the environment we create. Every day, everyone goes home to their families.
  • Community
    We are proud to be part of Mac Donald-Miller. We actively seek to build relationships and know each other as individuals. Together we create an environment that is welcoming, caring, and trusting.
  • Innovation
    We are committed to continuous,
    creative problem solving. Innovation is how we stay an industry leader. We always strive to challenge and better ourselves.
  • Fun! – Take the work seriously, but never taking ourselves too seriously. It’s possible to be both serious professionals and good-natured people you enjoy working with. We strive to be both.

We are seeking a detail-oriented and proactive Accounts Receivable Specialist to join our Accounting Team. This role will focus on managing collections, supporting cash application processes, building strong relationships with customers to support timely payments and reduce outstanding receivables, and ensuring accurate documentation.

Top deliverables for the first year to be a hero
  • Proactively manage the collections process, including contacting customers via phone, email, and mail to follow up on outstanding invoices. Consistently maintain or reduce days in billing outstanding for responsible accounts to an average of 45 days or less. Keep the invoices over 60 plus days to lower than 15% of overall outstanding receivables
  • Work closely with the cash application team to ensure payments are properly applied and discrepancies are resolved in a timely manner.
  • Maintain accurate and up-to-date records of all collection activities, payment agreements, and communications with customers.
  • Identify, investigate, and resolve disputed invoices or billing issues in collaboration with internal departments.
  • Generate and analyze aging reports to prioritize collection efforts and accelerate accounts as necessary.
  • Assist in month-end closing activities, including reconciliation of AR accounts and preparation of reports.
  • Develop and maintain positive relationships with customers, serving as a key point of contact for account-related inquiries.
  • Maintain and update process documentation
  • Recommend and help implement improvements to AR and collection processes for better efficiency and control.
  • Other tasks as assigned by the manager

The Accounts Receivable Specialist role reports directly to Ewelina Szarkowicz – Accounts Receivable Manager on a…

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