Telecom Invoicing and Billing Specialist

About Aretum

Aretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront.

Aretum is seeking a skilled and motivated Telecom Invoicing and Billing Specialist. As a Telecom Invoicing and Billing Specialist, you will be supporting our client in public and private sector telecom invoicing and billing needs such as validation, reconciliation, and processing.

Due to the nature of our work as a federal consulting organization, employees may be expected to handle Controlled Unclassified Information (CUI) and must adhere to applicable safeguarding and compliance requirements.

• Validate vendor charges, reconcile accounts, and process payments using customer’s financial systems such as TIMS, TOPS, VITAP, and Pegasys.
• Research payment statuses, resolve discrepancies, and maintain accurate data in customer’s business systems.
• Electronically process and transmit invoices.
• Manage electronic mailboxes to ensure timely resolution of tickets and inquiries.
• Reconcile vendor accounts with customer’s contracts to ensure accuracy.
• Prepare balance sheets, financial statements, and control documents.
• Collaborate with stakeholders to create and manage Business Objects reports as needed.
• Monitor data accuracy and address discrepancies in income/expense, gross margin, and general ledger accounts.
• Address and resolve billing inquiries from customer agencies and vendors.
• Monitor and resolve chargebacks, non-IPAC delinquencies, and rejected IPACs by researching various systems and coordinating corrections.
• Communicate effectively with clients, vendors, and internal teams to ensure timely resolution of financial issues.
• Process interagency agreements and manage funding documentation.
• Maintain system portals for document storage and dissemination to stakeholders.
• Support funds acceptance processing and maintain accurate records in customer’s financial systems.
• Identify opportunities to improve billing processes and recommend enhancements.
• Provide training and support to team members on reconciliation and invoicing processes.

• Minimum of 2 years of experience with telecom invoicing & billing.
• Associate’s degree in accounting or a related field, or equivalent experience (2 years of additional experience is acceptable in lieu of a degree).
• Experience supporting government entities.
• Proficiency in Microsoft Office Suite (Excel, Word, PowerPoint, SharePoint etc.).
• Strong attention to detail and ability to manage multiple tasks.
• Strong communication and organizational skills.
• Ability to adapt to changing project needs and timelines.
• Ability to work independently and as part of a team.

• Experience supporting federal government entities.

Travel to client locations isrequiredfor this position and may vary based on project needs.

Aretum is committed to fostering a workplace rooted in excellence, integrity, and equal opportunity for all. We adhere to merit-based hiring practices, ensuring that all employment decisions are made based on qualifications, skills, and ability to perform the job, without preference or consideration of factors unrelated to job performance.

As an Equal Opportunity Employer, Aretum complies with all applicable federal, state, and local employment laws.

We are proud to support our nation’s veterans and military families, providing career opportunities that honor their service and experience.

If you require reasonable accommodation during the hiring process due to a disability, please contact  for assistance.

Equal Opportunity Employer/Veterans/Disabled

Applicants must be U.S. citizen or currently authorized to work in the United States on a full‑time basis. This position supports a federal government contract and requires the ability to obtain and maintain a Public Trust or Suitability Determination, depending on the agency’s background investigation requirements. Sponsorship is not available.

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off
• Family Leave (Maternity, Paternity)
• Short Term & Long-Term Disability
• Training & Development