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Colossal Contracting

SDVOSB federal contractor for IT solutions

Invoicing Specialist

Full-TimeUpdated on 10/23/2026
$18 - $22/hr
Junior
Bachelor's, Associate's
St. Petersburg, FL, USA
In PersonWork from the St. Petersburg office; occasional trips to Annapolis, Maryland for company events. Travel is otherwise not required.
AccountingAccounts Payable/Receivable

About the job

Requirements
  • One to two years of experience in a customer-facing role in banking, accounting, or finance.
  • An associate's or bachelor's degree is preferred but not required.
  • Ability to creatively solve challenging problems.
  • Ability to manage multiple tasks simultaneously, prioritize workload effectively, and work in a dynamic and complex environment.
  • Strong organizational skills and attention to detail.
  • Ability to communicate effectively and work without direct supervision or detailed direction.
Responsibilities
  • Follow the day-to-day direction of the Deputy Controller while working closely with the Finance Team.
  • Prepare customer invoices daily for mail, email, or other electronic delivery.
  • Assist with completing customer-required forms, including W-9 forms.
  • Process credit card payments and refunds.
  • Resolve payment discrepancies and disputes.
  • Prepare reports on delinquent accounts and customer payment profiles.
  • Assist the finance team and management with ad hoc reporting.
  • Assist the finance team with projects as needed.
  • Verify billing data accuracy and correct errors.
  • Review documentation submitted to the Billing Team for accuracy, completeness, and compliance with billing standards.
  • Perform work independently within established policies and procedures, with review by superiors through reviews and reports.
  • Secure payment of open account balances.
  • Research rejected payments.
  • Provide administrative support to other department operations as needed.
  • Develop a comprehensive understanding of federal procurement practices.
  • Keep business information confidential.
  • Comply with business principles, ethical standards, legal obligations, and company policies.
  • Work to expedited deadlines, including end-of-month, end-of-quarter, and the federal government's fiscal year end.
  • Occasionally report to the Annapolis, Maryland headquarters for company events.
  • Perform other duties as assigned.

About the company

Colossal Contracting provides IT solutions and professional services to the U.S. federal government as a Service-Disabled Veteran-Owned Small Business. Its main work is to secure prime DoD contracts and deliver network infrastructure, cloud, data center management, cyber security, servers, storage, software licenses, and IT integration services. It fulfills contracts by sourcing hardware and software and delivering compliant, integrated IT solutions and ongoing support under established government programs. Its edge comes from SDVOSB status combined with a government-focused, end-to-end IT capability that speeds procurement and ensures compliance, aiming to grow its government-contracting business to serve DoD and other federal agencies.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Annapolis, Maryland

Founded

2009

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Simplify Jobs

Simplify's Take

What believers are saying

  • May 2026 USDA won $3.85 million Cisco DNA enterprise agreement.
  • May 2026 IHS awarded $3.30 million Aberdeen IT support services.
  • 2026 APHIS, DFC, and USDA awards show multi-agency demand beyond DoD.

What critics are saying

  • CIO-SP3 small-business period ends April 30, 2026, forcing painful recompete risk.
  • Revenue depends on winning government task orders, not sticky proprietary software.
  • Losing SDVOSB certification or vehicle access would crater Colossal's federal pipeline.

What makes Colossal Contracting unique

  • 2026 SDVOSB status opens set-aside work other integrators cannot bid.
  • Colossal holds GSA VETS-2 and NIH CIO-SP3 vehicles through 2028.
  • The firm spans network gear, cloud, data centers, and cybersecurity delivery.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Paid Time Off
  • Unlimited Paid Time Off
  • Retention bonuses
  • Education/Certification reimbursement
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Flexible Work Hours