10 ManTech operations leaders
Nicole Smith, VP of Operations, Technology and Capabilities Organization at ManTech, is one of ten ManTech operations leaders listed here, alongside people who hold program operations, director of operations and business operations roles. A reader can learn how operations leaders work at ManTech from people who have held the role.
Professionals to explore
John Schwabe
LinkedInExperience: Director, Operations · MANTECH
John Schwabe has been Director, Operations at MANTECH since January 1997, based in Kensington, Maryland, and also lists the title Director Business Operations there for the same span. John Schwabe was Director Network Operations at Global Management Systems, Inc from 1995 to 1997, and the profile summary describes program management experience providing support services to government agencies.
Joseph Schneider
LinkedInExperience: Vice President - Program Operations · MANTECH
Joseph Schneider has been Vice President - Program Operations at MANTECH since November 2024 and describes leading a large portfolio and division of technical and analytic efforts with mission critical impacts. Joseph Schneider was Division Manager at Leidos from 2021 to 2024 and is based in Herndon, Virginia.
Karen Murray
LinkedInExperience: Director of Operations · MANTECH
Karen Murray has been Director of Operations at MANTECH since January 2020 and is based in Lexington Park, Maryland. At MANTECH, Karen Murray was also Program Manager from 2018 to 2020, Senior Business Analyst from 2011 to 2018 and Program Control Specialist from 2010 to 2011, and the profile notes a Project Management Professional credential.
Kelly Taylor Miller, PMP Certified
LinkedInExperience: Vice President of Program Operations, Defense Sector · MANTECH
Kelly Taylor Miller was Vice President of Program Operations, Defense Sector at MANTECH from April 2024 to January 2026 and has been Vice President & Division Manager, AF Army DISA there since January 2026, based in West Friendship, Maryland. Kelly Taylor Miller was Executive Director, Defense Agencies Portfolio at MANTECH from 2021 to 2024 and Program Director there from 2018 to 2021.
Laura Crielly
LinkedInExperience: Director, Business Operations, Digital Practice · MANTECH
Laura Crielly has been Director, Business Operations, Digital Practice at MANTECH since February 2026. Laura Crielly was Senior Manager at Accenture from 2016 to 2025, Operations Manager at the U.S. Small Business Administration from 2010 to 2013, Management and Program Analyst at the U.S. Department of Homeland Security from 2009 to 2010 and Manager at North Highland from 2007 to 2009.
Lyndon Fitzgerald Johnson
LinkedInExperience: Director of Operations - ACTP · MANTECH
Lyndon Fitzgerald Johnson has been Director of Operations - ACTP at MANTECH since April 2026 and was Program Operations Analyst, ACTP at MANTECH from 2023 to 2026. Lyndon Fitzgerald Johnson was also Assistant Head Coach/ Safeties Coach/ Special Teams Coordinator at Towson University from 2016 to 2023 and held coaching roles at the University of Maryland from 2011 to 2015.
Nicole Smith
LinkedInExperience: VP of Operations, Technology and Capabilities Organization · MANTECH
Nicole Smith has been VP of Operations, Technology and Capabilities Organization at MANTECH since July 2026 and was Executive Director, Data and AI Practice there from 2024 to 2026. Nicole Smith was also WW Data & AI Practice Leader, AI Governance & Regulatory Technologies (RegTech) at IBM from 2023 to 2024 and describes a career helping government clients modernize with technology.
Rick Vassaur
LinkedInExperience: VSFB Director of Operations · ManTech International Corp.
Rick Vassaur has been VSFB Director of Operations at ManTech International Corp. since December 2002, with a headline of VSFB Director of Operations/PM at ManTech International Corp. Rick Vassaur is based in Santa Maria, California, and the profile shows the director of operations role as current with no end date.
Schad McGregor
LinkedInExperience: Director of Operations and Growth · MANTECH
Schad McGregor has been Director of Operations and Growth at MANTECH since 2023 and describes experience with military systems and functions. Schad McGregor was Chief Operating Officer at Valor Defense Solutions, Inc. from 2018 to 2023, Chief Operations Officer at Raydar Inc from 2017 to 2018 and Director Of Quality at Raydar & Associates from 2016 to 2017.
Stephen Deitz
LinkedInExperience: Sr. Vice President, Strategic Operations · MANTECH
Stephen Deitz is a former Sr. Vice President, Strategic Operations at MANTECH, a role held from July 2020 to February 2022, and was Executive Vice President and General Manager, Federal Civilian Sector there from 2022 to January 2026. Stephen Deitz was also Sr. Vice President of Intel Operations at MANTECH from 2018 to 2020 and has been Founder at Deitz Innovations LLC since 2026.
Choose the right perspective
Match the person's operations area, such as program operations, business operations or site operations, to the decision you face. Weigh the program or practice named in each person's title, since different customers and contracts raise different operating questions.
Questions to take into the conversation
- 01What did you focus on first when you took on your operations role at ManTech?
- 02How do you decide which operating problems to tackle first when you take on a new area?
- 03What has your own work at ManTech taught you about running operations well?
Reaching ManTech operations leaders
How can I contact one of these ManTech operations leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 2 companies: MANTECH and ManTech International Corp., based on profile data retrieved on October 24, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach ManTech operations leaders?
You choose the offer, starting at $5 per person. The offer is what the person receives, and Instant Expert's fee is added on top, so a $100 offer costs you $125. The fee is 20% of what you pay. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
Can an AI agent ask one of these ManTech operations leaders a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
Request a correction or removal