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Greg Duff Email & Phone Number

Program Control Analyst, Lead at ManTech
Location: Ashburn, Virginia, United States 5 work roles 1 school
1 work email found @guidehouse.com 7 phones found area 703, 202, 317, and 219 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 7 phones

Work email g****@guidehouse.com
Direct phone (703) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Program Control Analyst, Lead
Location
Ashburn, Virginia, United States
Company size

Who is Greg Duff? Overview

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Quick answer

Greg Duff is listed as Program Control Analyst, Lead at ManTech, a company with 9320 employees, based in Ashburn, Virginia, United States. AeroLeads shows a work email signal at guidehouse.com, phone signal with area code 703, 202, 317, 219, and a matched LinkedIn profile for Greg Duff.

Greg Duff previously worked as Finance Manager at Guidehouse and Project Control Advisor at Gdit. Greg Duff holds Bs, Accounting from Butler University.

Company email context

Email format at ManTech

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{first_initial}{last}@guidehouse.com
86% confidence

AeroLeads found 1 current-domain work email signal for Greg Duff. Compare company email patterns before reaching out.

Profile bio

About Greg Duff

Greg Duff is a Program Control Analyst, Lead at ManTech. He possess expertise in financial reporting, government contracting, business process improvement, process improvement, business analysis and 25 more skills.

Listed skills include Financial Reporting, Government Contracting, Business Process Improvement, Process Improvement, and 26 others.

Current workplace

Greg Duff's current company

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ManTech
Mantech
Program Control Analyst, Lead
herndon, virginia, united states
Website
Employees
9320
AeroLeads page
5 roles

Greg Duff work experience

A career timeline built from the work history available for this profile.

Program Control Analyst, Lead

Current

Herndon, Virginia, United States

  • Provide overall financial support for multiple operational contracts simultaneously
  • Work closely with Project Management teams to ensure accurate forecasting and reporting of financial data
  • Provide Contracts and Subcontracts groups with accurate funding and planning data to help maintain sufficient funding for both ManTech and subcontract vendors
  • Act as liaison between project teams and other leverage groups, such as Billing and Accounts Payable, to ensure both client and vendor invoices are being submitted timely and accurately
  • Prepare monthly journal entries to accrue revenue and expense, as needed
  • Complete required quarterly EAC updates to ensure appropriate revenue recognition
Nov 2020 - Present

Finance Manager

Tyson's Corner, VA

  • Serve as Finance lead for National Security Sector (NSS), providing direct support to the NSS operational sector lead, as well as guidance and mentorship to individual PFD analysts
  • Complete monthly forecast and budget reporting and variance explanations on Revenue and Gross Margin for NSS
  • Working with other PFD Sector Leads to develop a comprehensive "PM Toolkit", designed to assist Project Managers in completing their financial responsibilities more efficiently
  • Provide direct financial support and guidance to Project Managers for multiple operational projects in the areas of forecasting, billing and funding tracking (for both Guidehouse and subcontractors)
  • Act as liaison between project leadership and other leverage groups, such as Billing, Accounts Payable, Contracts and Subcontracts
  • Prepare monthly subcontractor accruals, as needed
Jun 2019 - Nov 2020

Project Control Advisor

Gdit

Falls Church, VA

  • Responsibilities:
  • Managed day-to-day functions of up to four other analysts, and provided consistent guidance and feedback on performance (company re-organization in January, 2017 moved all direct reports to another business area)
  • Provide overall financial support for multiple operational contracts simultaneously, ranging in size from approximately $2M in annual revenue to approximately $35M in annual revenue
  • Work closely with Project Management teams to ensure accurate forecasting and reporting of financial data
  • Provide Contracts and Subcontracts groups with accurate funding and planning data to help maintain sufficient funding for both CSRA and subcontract vendors
  • Act as liaison between project teams and other leverage groups, such as Billing and Accounts Payable, to ensure both client and vendor invoices are being submitted timely and accurately
Jan 2008 - Jun 2019

Senior Financial Analyst

Electronic Data Systems

Herndon, VA

  • Responsibilities:
  • Team Lead for US Federal Finance group, consisting of seven analysts
  • Provided overall financial support for a variety Government contracts, ranging in size from less than $5M in annual revenue to over $1B in annual revenue
  • Provided forecasting support and analysis to operational leaders, and completed corporate reporting requirements (monthly, quarterly and annually)
  • Completed monthly PowerPoint presentations, which provide senior leadership with a more detailed view of contract financial performance
  • Completed ad hoc financial analyses and reporting, as requested by leadership
Feb 2003 - Jan 2008

Technical Recruiter

Electronic Data Systems

Herndon, VA

  • Responsibilities:
  • Full Life Cycle recruiting for internal EDS customers
  • Worked closely with customers to not only evaluate and qualify current staffing needs, but also to help anticipate and plan for future needs
  • Studied customer account Business Plans to better understand the nature of business and scope of services EDS was providing to external clients
Nov 2000 - Feb 2002
Team & coworkers

Colleagues at ManTech

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1 education record

Greg Duff education

FAQ

Frequently asked questions about Greg Duff

Quick answers generated from the profile data available on this page.

What company does Greg Duff work for?

Greg Duff works for ManTech.

What is Greg Duff's role at ManTech?

Greg Duff is listed as Program Control Analyst, Lead at ManTech.

What is Greg Duff's email address?

AeroLeads has found 1 work email signal at @guidehouse.com for Greg Duff at ManTech.

What is Greg Duff's phone number?

AeroLeads has found 7 phone signal(s) with area code 703, 202, 317, 219 for Greg Duff at ManTech.

Where is Greg Duff based?

Greg Duff is based in Ashburn, Virginia, United States while working with ManTech.

What companies has Greg Duff worked for?

Greg Duff has worked for Mantech, Guidehouse, Gdit, and Electronic Data Systems.

Who are Greg Duff's colleagues at ManTech?

Greg Duff's colleagues at ManTech include Bob Reid, Jane Bourne, Andrew Wade, Mukaram Khan M.Khan, and Bob Job.

How can I contact Greg Duff?

You can use AeroLeads to view verified contact signals for Greg Duff at ManTech, including work email, phone, and LinkedIn data when available.

What schools did Greg Duff attend?

Greg Duff holds Bs, Accounting from Butler University.

What skills is Greg Duff known for?

Greg Duff is listed with skills including Financial Reporting, Government Contracting, Business Process Improvement, Process Improvement, Business Analysis, Risk Management, Business Process, and It Strategy.

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