Billing Specialist

About ESi

Engineering Systems Inc. (ESi) is an engineering and scientific investigation and failure analysis firm. We partner primarily with law firms, insurance companies, and manufacturers to answer complex technical questions on projects ranging from small, focused investigations to large-scale, high‑profile losses.

Our work spans a wide range of challenges, including major transportation accidents, equipment and product failures, personal injury claims, and damage to residential, commercial, and industrial structures. The variety, complexity, and real‑world impact of our projects create deeply fulfilling and intellectually engaging careers for our consultants.

At ESi, you'll have the opportunity to shape your own path while being supported by a collaborative culture, national expertise, and industry‑leading resources.

Under general direction, the Billing Specialist provides support across multiple finance and accounting functions, including accounts receivable, billing, and direct costs. This role requires a highly detail‑oriented professional who can thrive in a high‑volume environment, consistently meet deadlines, and solve problems proactively while maintaining a strong customer‑service focus.

• Process ESi billing twice monthly and complete daily billing requests as received, ensuring all billing cycle deadlines are met.
• Prepare invoices; enter direct soft costs; generate account statements; and produce internal and client reporting, including project data analysis and accuracy reviews.
• Add new billing timekeepers for supported offices to the proforma run and communicate proforma status, upcoming notices, changes, deadlines, and other key updates.
• Ensure billing is completed timely and accurately in accordance with Generally Accepted Accounting Principles (GAAP).
• Complete assigned WIP checklist items prior to twice‑monthly proforma generation in 3E.
• Verify the accuracy of billing data (time, hard costs, and soft‑cost postings) with a high level of attention to detail.
• Update timekeeper time‑entry edits as requested.
• Create manual invoices for retainer billing.
• Process employee billing each mid‑month cycle, including the collection of past‑due employee personal charges.
• Set up and maintain required data in external client e‑billing platforms to support invoice submission.
• Partner with external e‑billing contacts to resolve portal issues (rejections, appeals, disputes, budget submissions, monthly accruals, timekeeper additions, rate updates, and process changes) and promptly elevate portal concerns to the Billing Manager as needed.
• Communicate new or changed special billing requirements to the billing team and NBI team weekly to ensure the special billing list remains current.
• Import soft costs and troubleshoot issues promptly when they arise.
• Create and maintain backup documentation for new and updated processes in 3E.
• Work accurately and independently with a high level of attention to detail. Demonstrate effective multitasking and time‑management skills.
• Maintain a professional, cooperative attitude and deliver consistent internal and external customer service.
• Maintain organized billing documentation in accordance with GAAP and internal control requirements to support audit readiness.
• Respond to employee, vendor, and customer inquiries related to accounts, internal accounting procedures, and services.
• Perform other duties as assigned.

• Associate's degree and a minimum of two years of accounting and/or billing experience required.
• Or 5 years equivalent accounting experience, or internal ESi experience required.

• Possesses strong organizational and time management skills.
• Demonstrates good written and verbal communication skills.
• Ability to foster a team environment and work collaboratively.
• Works accurately with great attention to detail.
• Ability to effectively accept direction from multiple levels within various departments.
• Advanced skills in Microsoft Outlook, Excel, Word, Teams, One Drive, PPT, Adobe Acrobat Professional and 3E.
• Windows Operating System experience highly preferred.…