AR & Billing Manager

At Horwitz, we don’t just offer jobs—we build careers. For over 100 years, we’ve been a leader in HVAC, plumbing, electrical services, delivering exceptional service while fostering a supportive and innovative workplace. Joining our team means working with passionate professionals in a culture built on safety, accountability, professionalism, motivation, curiosity, and a can-do attitude.

We’re committed to your growth with training, mentorship, and advancement opportunities. Along with competitive benefits—you’ll be part of a company that values its employees and makes a positive impact in the community. Join Horwitz and become part of a legacy of excellence and opportunity.

Position Overview:
The AR and Billing Manager will oversee the billing operations for both the construction and service divisions, ensuring invoices are accurate, timely, and aligned with customer expectations and contractual requirements. This role requires a balance of strategic oversight and hands-on execution, as well as cross-functional collaboration with project managers, technicians, and the finance team. You’ll lead billing initiatives, support collections processes, and drive continuous improvement within our billing systems and procedures. 

• Lead the day-to-day billing operations, including oversight of AIA billing, time & materials invoices, service work orders, and contract billing workflows. 

• Supervise and mentor billing team members, ensuring workload distribution, training, and development align with departmental goals. 

• Review and approve customer invoices, supporting documentation (lien waivers, compliance forms), and ensure submission deadlines are met. 

• Collaborate with project managers, service technicians, and dispatch teams to maintain billing accuracy and momentum. 

• Manage billing through third-party portals including Ariba, Coupa, Maximo, Textura and other customer platforms. 

• Monitor AR aging reports and coordinate with the collections team to resolve outstanding balances. 

• Oversee customer and job setup in COINS or similar ERP systems and ensure accurate contract and billing terms are applied. 

• Generate and review monthly billing summaries, customer statements, and profitability reports. 

• Serve as the primary point of contact for resolving escalated customer billing inquiries or disputes. 

• Identify and implement process improvements for greater efficiency and accuracy in the billing cycle.  

• Perform other duties as assigned. 

• Conduct yourself in accordance with Horwitz core values: Safe, Accountable, Professional, Motivated, Can Do and Curious. 

• Get better every day. 

Supervisory Expectation: 

• Supervise a team of approximately six project accountants and billers.

Education and Experience:  

• 5+ years of billing or accounts receivable experience, with 2+ years in a supervisory or lead role 

• Construction industry experience . 

• Proficient in AIA billings, lien waiver processes, and third-party customer portals. 

• Strong leadership, organizational, and communication skills. 

• Experience with ERP systems (e.g., COINS, Sage Intacct, or similar). 

• High attention to detail, with the ability to meet deadlines in a fast-paced environment. 

• Intermediate to advanced proficiency in Microsoft Excel. 

• Customer-focused approach with problem-solving skills and a positive, team-first attitude. 
  

Benefits

• Comprehensive medical, dental, and vision insurance

• 401(k) with Safe Harbor and Profit Sharing

• Paid time off and holidays

• Tuition reimbursement

• Professional development opportunities