Billing Manager

About the role:

The Billing Manager leads SIS’s Billing and Accounts Receivable department and is accountable for the end-to-end revenue cycle, including high-volume billing operations, Accounts Receivable, collections, and cash management.

In this role, your responsibilities will be:

• Manage, lead, and develop the Billing and AR team. Set clear goals and performance expectations, and foster a culture of accountability and continuous process improvement.
• Interview and select candidates, and hire, promote, discipline, and terminate staff, or make recommendations on these actions that are given particular weight.
• Plan, assign, and prioritize the team’s daily and weekly work, set schedules, and balance workloads to maintain a rigorous weekly billing cadence across a large Time & Materials (T&M) portfolio and eliminate unbilled backlogs.
• Train, coach, and mentor staff; conduct performance evaluations; address performance and conduct issues; and build bench strength within the team.
• Review and approve the team’s work product, including invoices, billing adjustments, credit memos, cash applications, and collection activity, to ensure accuracy, completeness, and compliance with policy.
• Establish, track, and govern key performance indicators across the full revenue cycle, including Billing Accuracy Rate, Days to Bill, Days Sales Outstanding, and AR aging. Hold the team accountable to targets and direct corrective action when results fall short.
• Direct the team’s collection efforts on past-due accounts and oversee cash applications, setting priorities and escalation strategies and personally handling only escalated client accounts and disputes.
• Serve as the department’s liaison with the Accounts Payable team, directing Billing staff to ensure timely and accurate subcontractor billing with zero revenue leakage.
• Oversee the team’s preparation of weekly borrowing base calculations and collateral data for the Asset-Based Line of Credit (ABL), reviewing and approving submissions. Develop cash flow forecasts to optimize liquidity.
• Continuously evaluate and optimize Billing and AR workflows. Identify bottlenecks, evaluate automation and AI solutions where applicable, and direct the team in implementing approved changes.
• Design, implement, and maintain robust Standard Operating Procedures (SOPs), and train staff on them. Lead system integration projects across Sage, Salesforce, and Workforce Management platforms.
• Partner with the Accounting Manager to ensure compliance with US GAAP (ASC 606), ensuring alignment across both billed and unbilled receivables.
• Perform other related duties as assigned, consistent with the scope and level of this position.

• Bachelor’s Degree in Finance, Accounting, or a related field required.
• 7+ years of comprehensive experience spanning both client billing and Accounts Receivable management.
• 2+ years in a direct management capacity with responsibility for hiring, training, assigning and reviewing work, and evaluating the performance of staff. Proven record of team leadership and operational transformation.
• Advanced proficiency in Excel.
• Demonstrated success managing high level Service-Based or Time & Materials (T&M) billing models.
• Hands-on experience with asset-based lending/borrowing base bank reporting.
• Understanding of ASC 606 revenue recognition principles as they apply to billing and receivables.
• Superior communication skills with a proven track record of translating complex financial metrics and system requirements into actionable insights for non-finance staff and executives alike.
• Ability and willingness to work 100% on-site in Culver City, CA.
• Requires occasional travel to other SIS offices.

• Expert-level mastery of Excel, proficiency with Google Sheets, Data loaders, Templates, Macros, Scripts, and AI tools.
• Experience leading a team of comparable size.
• Experience with Sage, Salesforce, and Workforce Management platforms.
• Billing experience in security services, staffing, or another high-volume, labor-based service business.
• Experience leading billing system implementations or automation projects.

• Salary: $125,000 / Annual
• Health, Dental, Vision, and 401(k) for eligible employees
• Paid Time Off, including Sick/Safe Time
• A dynamic and challenging work environment with opportunity for growth

Security Industry Specialists, Inc. is an Equal Opportunity Employer