Billing Specialist

Company: TIMEPROOFUSA
Location: Anaheim
Posted on: February 18, 2026

Job Description:

Job Description Job Description Master Roofing Solutions (MRS) is a trusted partner for roofing and solar solutions serving custom and production homebuilders across the region. We deliver high-quality, reliable, and innovative roofing and solar systems that help builders create durable, future-ready homes. Our work is defined by precision, professionalism, proactive communication, and full ownership from planning through installation. The Billing Specialist is responsible for accurate, timely, and compliant billing for assigned builder accounts. This role manages invoice preparation and submission, lien waivers, billing packets, and portal uploads while ensuring alignment across internal systems and builder requirements. The Billing Specialist proactively monitors job status, identifies billing risks, resolves discrepancies, and partners closely with internal teams to ensure all billable work is captured and submitted on schedule. This position requires strong attention to detail, ownership, and the ability to independently identify and address issues before they impact payment timelines. What You'll Do Billing & Invoicing Prepare and submit accurate invoices for assigned builders on a weekly basis, ensuring all billing is completed by established Friday deadlines Assemble and submit complete billing packets, including conditional waivers, lien releases, payment vouchers, and required documentation Maintain organized, audit-ready billing records Portal Management Submit invoices and documentation through builder portals such as SupplyPro, GCPay, The Box, GAF, Sunrun, and KB Monitor portal activity, resolve submission issues, and address rejections or discrepancies promptly Reconciliation & Accuracy Research and resolve line-item discrepancies between Sage, SupplyPro, and builder purchase orders Coordinate with internal teams to add missing or incorrect line items and ensure pricing, quantities, and job status align across systems Tracking & Communication Maintain billing trackers and status reports to ensure assigned projects remain current Respond to inquiries from builders, vendors, and internal stakeholders regarding invoices and documentation Escalate unresolved issues, recurring delays, or unusual requirements to the Assistant Controller in a timely manner Proactive Risk Management Monitor project progress and billing readiness for assigned builders Identify and address potential billing risks (e.g., missing POs, incomplete job status, prior rejections) in advance of deadlines Apply a detail-oriented, analytical mindset to validate inputs, documentation, and job alignment Success Metrics All assigned invoices submitted on time each week High first-pass acceptance rate with minimal corrections requested by builders Complete and compliant billing packets submitted consistently Timely resolution of discrepancies and billing issues Clear, professional communication with internal teams and external partners Strategic Contributions Recommend process improvements to reduce rejections and rework in builder portals Partner with AP/AR and operations teams to improve pricing, documentation, and system alignment Maintain and improve standardized billing checklists and templates by builder Oversee day-to-day office operations, including administrative tasks, scheduling, supplies management, and facility upkeep. Serve as the main point of contact for internal staff, vendors, and customers entering or contacting the office. Maintain and organize company records, documents, and files within CRM systems (i.e. Salesforce) and internal platforms. Support leadership and department heads with reporting, timekeeping, onboarding/offboarding, IT requests, shipping/receiving office needs, etc. Manage office communications — emails, phone lines, mail, and customer inquiries Coordinate meetings, trainings, office events, and company calendars to maintain seamless operations. Qualifications Education & Experience High school diploma or equivalent required; Associate degree preferred 2 years of experience in construction, contracting, or service-industry billing Experience with lien waivers, conditional releases, and builder portal billing preferred Technical Skills Experience with Sage Intacct, SupplyPro, GCPay, The Box, or similar systems Strong Excel and documentation skills Ability to reconcile quantities, pricing, phases/lots, and PO or work-order references What's In It for You $60k - $70k, depending on experience Full benefits package — Medical, Dental, Vision, 401k, and PTO Supportive team culture built on communication, reliability, and recognition Full-time, W-2 employment What It Takes to Succeed Strong attention to detail and follow-through Ability to work independently and manage multiple deadlines Clear written and verbal communication Professional judgment and accountability

Keywords: TIMEPROOFUSA, Palmdale , Billing Specialist, Accounting, Auditing , Anaheim, California