Accounts Payable, Senior

Mitre Corporation; Tampa (FL); On-site; USD 88,000 - 133,000; Full time

Job summary

MITRE is a nonprofit engineering and technology organization serving U.S. government, delivering impact in national security, healthcare, and cybersecurity. This Accounts Payable position supports vendor payments, data accuracy, and continuous improvement across the AP stack.

Based in Tampa, this on-site role requires at least 3 days per week in the office. You will audit invoices, optimize processes, and partner with internal teams and vendors to ensure timely, compliant payments while

Qualifications

• Minimum 5 years related experience with a Bachelor's degree.
• Or 3 years with a Master’s degree.
• Or a PhD with relevant experience.
• Equivalent combination of education and work experience.
• 2+ years in Accounts Payable or similar finance operations.

Responsibilities

• Perform detailed invoice audits for accuracy and approvals.
• Analyze AP data to identify trends and improvements.
• Support vendor setup and master data maintenance.
• Process payments per terms and internal controls.
• Research and resolve discrepancies with vendors.
• Design and refine automated workflows and dashboards.
• Build vendor relationships and shift toward high-touch service.
• Participate in continuous improvement projects with an audit mindset.

Skills

Accounts Payable

Data analysis

Communication

Vendor relations

Education

Bachelor's degree

Master's degree

PhD

Tools

ERP systems

Invoice automation tools

Workflow tools

Job description

At MITRE, your passion fuels work that impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public interest. With objectivity and integrity at our core, we lead federally funded research and development centers for U.S. government agencies – collaborating with industry and academia to deliver integrated, high-impact solutions that advance our nation’s health, security, and prosperity. Our people tackle the toughest technical challenges, supported by competitive benefits, meaningful career development, and a culture of innovation, collaboration, and technical excellence. Choose MITRE for a career with purpose — and help shape the future.

Department Summary:

The Accounts Payable department is responsible for accurately managing vendor invoices, processing payments based on defined payment schedules, and ensuring compliance with company policies and regulatory requirements. This team works closely with internal stakeholders and external suppliers to maintain strong relationships, resolve discrepancies, and support the organization’s overall financial integrity and cash flow management.

Roles & Responsibilities:

• Perform detailed invoice audits to ensure accuracy, policy compliance, and proper approvals, leveraging existing automation tools rather than manual data entry.
• Analyze accounts payable data to identify trends, exceptions, and process improvement opportunities, providing actionable insights to leadership.
• Support vendor setup and maintenance, ensuring accurate master data, appropriate documentation, and adherence to onboarding controls.
• Monitor and process payments in accordance with terms, cash flow guidelines, and internal controls, resolving any issues quickly and professionally.
• Partner with internal departments and vendors to research and resolve discrepancies, aged items, and complex invoice or payment issues.
• Contribute to the design and refinement of automated workflows, control checks, and reporting dashboards within the AP technology stack.
• Help shape the team’s transition toward account management and high-touch customer service by building strong vendor and stakeholder relationships.
• Participate in continuous improvement and special projects, bringing an audit and analytics mindset to enhance both operational efficiency and customer experience.

Basic Qualifications:

• Typically requires a minimum of 5 years of related experience with a Bachelor’s degree; or 3 years and a Master’s degree; or a PhD with relevant experience who can immediately contribute at this job step; or equivalent combination of related education and work experience.
• 2+ years of experience in Accounts Payable or a similar finance operations role, including invoice processing, vendor maintenance, and payment execution.
• Proficiency with Accounts Payable systems and automation tools (e.g., ERP platforms, workflow tools, or invoice automation solutions), with strong attention to detail and accuracy.
• Demonstrated ability to analyze AP data, identify discrepancies or trends, and provide clear, actionable insights or recommendations.
• Strong communication and customer service skills, with experience partnering cross-functionally and working directly with vendors to resolve invoice and payment issues.
• This position requires a minimum of 3 days per week on-site.

Preferred Qualifications:

• Experience with advanced AP automation tools, ERP systems, and dashboard/reporting solutions to support analytics and process optimization.

This requisition requires the candidate to have a minimum of the following clearance(s):

None

This requisition requires the hired candidate to have or obtain, within one year from the date of hire, the following clearance(s):

Not Applicable

Salary compensation range and midpoint:

$88,400 - $110,500 - $132,600 Annual

Work Location Type:

Onsite

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local or international law.

MITRE intends to maintain a website that is fully accessible to all individuals. If you are unable to search or apply for jobs and would like to request a reasonable accommodation for any part of MITRE’s employment process, please email [e-mail] for general support and [e-mail] for intern positions. This service is for individuals requiring reasonable accommodation requests. Please note that vendor solicitations will not receive a reply.

Benefits information may be found here (https://careers.mitre.org/us/en/benefits) .

Copyright © 1997-2026, The MITRE Corporation. All rights reserved. MITRE is a registered trademark of The MITRE Corporation. Material on this site may be copied and distributed with permission only.