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David Sullivan Email & Phone Number

Network Security Engineer at Applied Insight LLC at Applied Insight LLC
Location: Centreville, Virginia, United States 5 work roles 1 school
1 work email found @applied-insight.com 2 phones found area 703 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 86%

Contact Signals · 1 work email · 2 phones

Work email d****@applied-insight.com
Direct phone (703) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Applied Insight LLC
Role
Network Security Engineer at Applied Insight LLC
Location
Centreville, Virginia, United States
Company size
256 employees

Who is David Sullivan? Overview

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Quick answer

David Sullivan is listed as Network Security Engineer at Applied Insight LLC at Applied Insight LLC, a company with 256 employees, based in Centreville, Virginia, United States. AeroLeads shows a work email signal at applied-insight.com, phone signal with area code 703, and a matched LinkedIn profile for David Sullivan.

David Sullivan previously worked as Network Security Engineer at Applied Insight Llc and Network Security Engineer at Intelligent Decisions. David Sullivan holds Associates In Supervisory Leadership, Computer Science from Hawaii Pacific University.

Company email context

Email format at Applied Insight LLC

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{first_initial}{last}@applied-insight.com
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AeroLeads found 1 current-domain work email signal for David Sullivan. Compare company email patterns before reaching out.

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Profile bio

About David Sullivan

David Sullivan is a Network Security Engineer at Applied Insight LLC at Applied Insight LLC.

Current workplace

David Sullivan's current company

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Applied Insight LLC
Applied Insight Llc
Network Security Engineer at Applied Insight LLC
virginia, united states
Website
applied-insight.com
Employees
256
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Company profile
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5 roles

David Sullivan work experience

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

Network Security Engineer

Intelligent Decisions

Reston, VA

Responsible for troubleshooting firewalls and IDS products with an emphasis on perimeter security.

Jul 2013 - Jan 2018

Security Engineer

Sprint

Responsible for troubleshooting firewalls and IDS products with an emphasis on perimeter security.

Jan 2003 - Jul 2013

Network Engineer

Sprint

Worked in Tier-3 (Operations Engineering) offering operational support for (mostly) Cisco routers.

Sep 1999 - Jan 2003

System Analyst

Us Army
Aug 1989 - Oct 1999
Team & coworkers

Colleagues at Applied Insight LLC

Other employees you can reach at applied-insight.com. View company contacts for 256 employees →

CC Christopher Charity Christopher Charity Colleague at Applied Insight LlcWashington DC-Baltimore Area, United States View → EH Elizabeth H. Elizabeth H. Colleague at Applied Insight LlcWashington DC-Baltimore Area, United States View → BG Bob Graham Bob Graham Colleague at Applied Insight LlcAshburn, Virginia, United States, United States View → KA Kokou Atede Amegan-Ayeh Kokou Atede Amegan-Ayeh Colleague at Applied Insight LlcWashington DC-Baltimore Area, United States View → BD Brandei Doster Brandei Doster Colleague at Applied Insight LlcUnited States, United States View → MC Mallory Cawlfield Mallory Cawlfield Colleague at Applied Insight LlcWashington DC-Baltimore Area, United States View → RL Rachel Little, Ms, Shrm-Cp Rachel Little, Ms, Shrm-Cp Colleague at Applied Insight LlcWaynesboro, Pennsylvania, United States, United States View → BD Bill Dassing Bill Dassing Colleague at Applied Insight LlcWashington DC-Baltimore Area, United States View → MS Martin Smith Martin Smith Colleague at Applied Insight LlcSanford, North Carolina, United States, United States View → CS Cheryl Sotoj Cheryl Sotoj Colleague at Applied Insight LlcGlen Burnie, Maryland, United States, United States View →
1 education record

David Sullivan education

FAQ

Frequently asked questions about David Sullivan

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

What company does David Sullivan work for?

David Sullivan works for Applied Insight LLC.

What is David Sullivan's role at Applied Insight LLC?

David Sullivan is listed as Network Security Engineer at Applied Insight LLC at Applied Insight LLC.

What is David Sullivan's email address?

AeroLeads has found 1 work email signal at @applied-insight.com for David Sullivan at Applied Insight LLC.

What is David Sullivan's phone number?

AeroLeads has found 2 phone signal(s) with area code 703 for David Sullivan at Applied Insight LLC.

Where is David Sullivan based?

David Sullivan is based in Centreville, Virginia, United States while working with Applied Insight LLC.

What companies has David Sullivan worked for?

David Sullivan has worked for Applied Insight Llc, Intelligent Decisions, Sprint, and Us Army.

Who are David Sullivan's colleagues at Applied Insight LLC?

David Sullivan's colleagues at Applied Insight LLC include Christopher Charity, Elizabeth H., Bob Graham, Kokou Atede Amegan-Ayeh, and Brandei Doster.

How can I contact David Sullivan?

You can use AeroLeads to view verified contact signals for David Sullivan at Applied Insight LLC, including work email, phone, and LinkedIn data when available.

What schools did David Sullivan attend?

David Sullivan holds Associates In Supervisory Leadership, Computer Science from Hawaii Pacific University.

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