Accounts Receivable & Billing Specialist

MITISHI L. DIXON

PROFESSIONAL SUMMARY

I’m a Finance and Client Services professional with a background in Customer Service. My career has grown within the Govt. Contracting arena in Invoicing & Billing. I work gracefully under pressure and excel in deadline driven environments. I’m an effective communicator when informing/educating Clients. I have been a liaison within the company to both internal & external Customers. I have a passion for being of service to others.

PROFESSIONAL EXPERIENCE

Red River Chantilly, Va

AR Specialist Sept 2025 – Feb 2026

Provide internal Customers with information regarding invoices and services.

Correspond with Clients to confirm receipt of invoice

Emailed monthly reminder of NET Terms for payment expectations to Clients.

Update Contract data in Auto Task system to create new Task Order for billing.

Post invoices using NAV billing system.

Update team billing sheet with each completed invoice and/or special terms.

Answer Client inquiries regarding billing period of performance, products and contractual information.

Created a personal log for monthly invoicing and inquiries.

MITRE McLean, VA

Accounts Receivable Analyst June 2024 – June 2025

Management and Collection of outstanding Accounts Receivables.

Reviewing, assigning, & documenting Accounts Receivable issues to discuss in meetings.

Provide details and explanations for disputed costs or invoice inquiries to Clients.

Prepare invoice packages including all government or Contract required documentation/backups.

Collaboration with other departments including attending kick-off meetings and Client Inquiry Meetings.

Submit invoices directly via email or appropriate portals.

Validate labor hours, current funded values and travel costs prior to submission for Program approval.

Attended Costpoint Certification Program as an employment requirement and successfully passed the Costpoint Certification test.

Improved billing process for billing a Top-Secret Contract by streamlining reports.

Assist other team members monthly as needed with monthly billings.

STR Gaithersburg, MD

Accounts Receivable Specialist September 2023 – June 2024

Run reports in Costpoint to access data related to monthly revenue and verify cumulative accuracy.

Analyze and reconcile report data to ensure accurate billing information.

Create invoices for T&M, FFP, CPFF, and milestone-type billings.

Manual invoice editing and screening to safeguard classified information and to meet specific contractual requirements.

Work closely with program management to verify billable costs and hold items that require reclassification.

Set up proposal charge codes for the contracts team in Costpoint.

Submit invoices directly via email, WAWF, IPP, and SOSSEC portals.

Use Excel to maintain a log of 80+ monthly invoices.

Meet billing goal of 80% of revenue.

Use company bank reports to find received payments on the A/R aging report.

Use data from the aging report to code and enter cash receipts for posting.

Update cash receipts log daily.

Booz Allen Hamilton

A/R Finance Billing Specialist May 2018 – May 2023

Managed monthly priority list from the accounts receivable database to prepare Fixed Price, Time & Materials, and Cost-Plus invoices to meet contractual due dates for all monthly invoicing tasks.

Coordinated efficient task processes with PBS to increase the effective use of time, minimizing error and submitting invoices to clients.

Analyzed and documented unbilled costs to reconcile variances and/or all unbilled items by completing monthly reconciliations for every processed invoice.

Ensures compliance with all SOX key controls including providing essential contractual information for every new invoice.

Provided contractual billing details to DCAA for auditing purposes.

Submitted monthly invoices through government-administered portals (MPO, WAWF & IPP).

Uploaded all billing documents into BDOCS by the close of the first business day of each month.

Sparks Group - Assignment: Booz Allen Hamilton

Contract Closeout Specialist January 2017 – May 2018

Processed 50 Fixed Price, Time & Materials, and Cost Reimbursable invoices per month.

Ensures all contractual invoices were compliant with the FAR and DCAA regulations.

Developed and reconciled the monthly billings for the general ledger.

Audited the accuracy of billing information entered in the system by preparing unbilled reconciliations from the online database and JAMIS.

Developed solutions to billing issues and collaborated on billing projects with billing operations management.

Provided up-to-date information on the status of all contracts for inclusion in the company's shared drive to be sent for approvals and signatures and then sent to clients.

Prepared contractual releases to be sent to lawyers to create final invoices in accordance with Booz Allen Hamilton procedures.

The Pathway Schools

Instructional Assistant August 2013 – January 2017

Assisted teachers with daily classroom agenda, projects, and activities in a high school setting for teenagers with Intellectual and emotional disabilities.

Created worksheets for brainteasers and/or various daily assignments while using Microsoft Word.

Redirected students when behaviors become defiant, disrespectful, or inappropriate.

Created a behavioral monitoring sheet and plan for individual students while using Microsoft Excel.

Attended IEP meetings for students to provide information regarding student progress and effort.

Tutored individual students in various subjects.

Provided behavioral summary to parents via phone and email regarding daily progress for students.

Chaperoned, planned, and guided several field trips and events.

Answered incoming calls and directed to appropriate staff on occasion.

Filed student-related paperwork.

Updated and distributed student schedule information per the principal’s records.

Assisted teacher in providing instruction and guidance to students during class instruction.

Sparks Group – Assignment: Triple Canopy, Inc.

Billing Specialist (Temporary Assignment) June 2013 – August 2013

Created spreadsheets for government travel invoices while using official receipts, airline tickets, and associated backups. Used Costpoint to take transactions off hold for posting to the system.

Verified billable transactions by checking monthly Muster per individual employee’s number of days worked.

Checked each travel transaction for accuracy and ensured that it was billable according to contract guidelines. Categorized and redirected any unbillable transactions.

Labeled backups, documented travel dates, and worked closely with other team members to resolve documentation corrections.

Northrop Grumman Chantilly, VA

Accountant I - Biller Level 3 November 2006 – December 2011

Analyzed government and commercial contract terms and processed contract invoices.

Performed unbilled AR analysis to include the review and disposition of unbilled costs and follow-up through resolution. Reconciled invoices to cost reports.

Review of contract documentation to determine billing requirements, reporting requirements, and ERP setup for automated invoicing.

Interacted with the contracts department, operational staff, and business management for issue resolution.

Handled special projects as assigned.

Northrop Grumman Herndon, VA

Accountant I - Biller Level 1 April 2006 – November 2006

Performed detailed analyses to ensure accurate financial reporting in the Lawson ERP system.

Provided recommendations and resolutions to complex contract billing issues.

Ensured that invoices were generated in accordance with contract terms using the NGC IWO system and the BR, AC, and GL modules of Lawson.

Performed and reviewed billed and unbilled analysis.

Provided training to new employees and monitored their performance.

Approved and certified invoices under an established value per business unit policies and procedures.

Responded to client inquiries.

Prepared journal entries in Excel, input and uploaded them into Lawson using the MS Add-In feature.

Maintained and updated contract files.

Reconciled sales and purchases for month-end close for the DMS sector.

EDUCATION

Montgomery College Rockville, MD

Associate of Arts March 2012

SKILLS

MS Office Suite (Excel, Word, Outlook & Teams) Adobe Acrobat FileMaker Pro Deltek Costpoint SAP JAMIS Lawson (Portal) // Lawson (LID)

PCR Online (Project Cost Reporting) Power PDF Advanced/NUANCE Integrity / Workflow Invoice Tracking & Reporting System (ITR)

Contracts Contract management

Accounts receivable

Adobe Acrobat

PCR

SOX

Zendesk

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