AR / Billing Operations Sr Manager

Phaxis•El segundo, CA
•Onsite

About The Position

The AR / Billing Operations Sr Manager is a hands-on role focused on stabilizing and improving a high-volume, multi-system billing and collections environment. The role takes immediate ownership of day-to-day operations and establishes structure, consistency, controls, and accountability across the team. It also supports broader process redesign and system improvements. The position oversees timely and accurate invoicing, collections execution, AR and billing reconciliations, reporting, workflow documentation, and team operating discipline. Success means billing is consistently accurate and timely, AR reporting and reconciliations are stable and explainable, core processes have clear checklists and workflows, and team execution improves through greater visibility and accountability. The role may expand depending on performance and business needs.

Requirements

  • 5–10 years of experience in AR, billing, or accounting operations.
  • Experience in high-volume or multi-system environments.
  • Strong attention to detail and process orientation.
  • Comfort working in less structured environments and creating order.
  • Hands-on, proactive, and execution-focused approach.
  • Strong Excel skills, including the ability to work with large datasets and reconcile data.
  • Experience entering environments that lack structure and building processes from the ground up.

Responsibilities

  • Ensure invoices are generated accurately and on time.
  • Implement and enforce daily and monthly billing checklists.
  • Identify and resolve billing errors and inconsistencies.
  • Drive execution of collections workflows and follow-ups.
  • Track aging, past-due accounts, and escalation paths.
  • Ensure consistent activity and visibility across the team.
  • Support monthly AR and billing reconciliations across systems.
  • Ensure reports are consistent, traceable, and repeatable.
  • Help identify and investigate variances.
  • Build and document clear workflows and standard operating procedures.
  • Establish daily, weekly, and monthly checklists across billing and AR.
  • Implement validation and control steps to improve accuracy.
  • Drive adoption of processes and enforce team adherence.
  • Support implementation of a daily and weekly reporting cadence.
  • Track AR aging and past-due balances, billing timeliness and accuracy, and collections activity and follow-up.
  • Improve visibility into team performance and operational health.
  • Provide day-to-day structure and oversight for billing and AR activities.
  • Help enforce deadlines, track tasks, and ensure follow-through.
  • Support training and standardization across the team.
  • Drive accountability for deadlines, deliverables, and performance expectations.
  • Reinforce structured ways of working and reduce ad hoc execution.
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