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Mark Yelsits Email & Phone Number

President at Atheniem
Location: Escondido, California, United States 8 work roles 1 school
1 work email found @l3harris.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email m****@l3harris.com
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Current company
Role
President
Location
Escondido, California, United States

Who is Mark Yelsits? Overview

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Quick answer

Mark Yelsits is listed as President at Atheniem, based in Escondido, California, United States. AeroLeads shows a work email signal at l3harris.com and a matched LinkedIn profile for Mark Yelsits.

Mark Yelsits previously worked as Director, TDL Support Systems at L3Harris and Support Systems and Software Director at Viasat Inc.. Mark Yelsits holds Bs, Computer Science from National University.

Company email context

Email format at Atheniem

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{first}.{last}@l3harris.com
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AeroLeads found 1 current-domain work email signal for Mark Yelsits. Compare company email patterns before reaching out.

Profile bio

About Mark Yelsits

As a Director of TDL Support Systems at L3Harris, I led the software and hardware teams that developed and maintained our Tactical Data Link support tools, which are used by military and government customers worldwide. I have over 18 years of experience in managing complex and high-profile projects in the defense and aerospace industry, with a Secret clearance and a strong background in customer interaction and business development.My career passion is to provide innovative and reliable solutions for military data links, which are essential for secure and interoperable communication and collaboration among diverse platforms and systems. I have extensive knowledge and expertise in Tactical Data Links, Multi-Link Simulation, and Terminal Support Equipment, as well as the operational and technical aspects of data link standards and protocols. I enjoy working with cross-functional teams and stakeholders to deliver quality products and services that meet or exceed customer expectations and requirements.

Listed skills include Integration, Systems Engineering, Military, Testing, and 33 others.

Current workplace

Mark Yelsits's current company

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Atheniem
Atheniem
President
AeroLeads page
8 roles · 40 years

Mark Yelsits work experience

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

President

Current

Malvern, Worcestershire, Gb

Atheniem Inc is an independent consultancy and training organization that specializes in operational and technical support through the acquisition, integration, testing, and sustainment of Multi Tactical Data Link (MTDL) platforms and Air Battle Management Command, Control, Computers and Communication (C4) systems

May 2024 - Present

Director, Tdl Support Systems

Fort Wayne, In, Us

Jan 2023 - Oct 2023

Support Systems And Software Director

Carlsbad, Ca, Us

Responsible for our Tactical Data Link software applications as well as our terminal support equipment. In this position, I'm responsible for the software and hardware teams that maintain our Tactical Data Link Support tools. I'm responsible for setting and maintaining pricing, maintaining subscriptions, product development and software tools. This position requires a significant amount of Business Development and Sales effort as well as close interaction with Finance, Contracts, Operations, and Inside Sales.

Feb 2012 - Jan 2023

Program Manager

Falls Church, Va, Us

Responsible for the cost, schedule and technical performance of the Multi-Link Simulation Test/Training Tool (MLST3) development program and the SW development for associated simulation products. The PM participates in the negotiation of contract changes and task orders. He coordinates the preparation of proposals, business plans, proposal work statements and specifications, operating budgets and financial terms/conditions of contract. Act as a primary customer contact for program activities, leading program review sessions to discuss cost, schedule, and technical performance. Establish design concepts, criteria and engineering efforts for product research, development, integration and test. Develops new business or expands the product line. Establish milestones and monitor adherence to master plans and schedules. Identify program problems and obtain solutions. Direct the work of employees assigned to the program/project from technical, manufacturing and administrative areas.

Oct 2003 - Feb 2012

System Analyst

Falls Church, Va, Us

Responsibilities include definition of system requirements, system testing, preparation and revision of system documentation, test plans, and test procedures.

Oct 2000 - Oct 2003

Senior Engineer

Bethesda, Md, Us

Responsibilities included generating and revising test procedures for new construction and backfit ships for U.S. Navy and foreign navies. Areas of responsibility include Data Link, Training Systems, and EMI. Responsible to NAVSEA for test planning on Japanese Maritime Self Defense Force (JMSDF) DDG-173 class shipyard availability periods. This responsibility included identifying ECP/RCP related changes, test planning, identifying services, and special equipment required. Assigned as the LM representative to the Navy Interoperability Working Group during the period of performance for CNO Project 801 Interoperability DT. Responsible for developing robust Measures of Effectiveness and Performance relating to the data links, planning complex at-sea exercises, conducting the exercises, and finally performing data analysis. Data analysis was conducted using legacy data analysis tools and new tools developed to our specifications.

Oct 1998 - Sep 2000

Data Link Analyst

Assigned as a Naval Tactical Data Link Analyst to the AEGIS development site. Responsibilities included testing data link operations (Link 16, Link 11, Link4A) in the development of new baselines of the AEGIS combat system and the operation of data link simulation equipment (MULTOTS/MLST3). These duties required an understanding of the various interfaces involved, understanding of the message standards, and the ability to determine the most efficient way to verify whether the program complies or deviates from specification, and the ability to isolate the source of a data link problem. Used data link simulators to support single element development testing, multiple element integration testing, Air control testing, engineering test and evaluation, link certification, baseline demonstrations etc. Used monitoring equipment during live (radio) operations to assist the engineering staff in isolating and identifying problem areas.

Jun 1991 - Oct 1998

Os2

Washington, Dc, Us

1987 - 1991 ~4 yrs
1 education record

Mark Yelsits education

  • National University
    National University
    Computer Science
FAQ

Frequently asked questions about Mark Yelsits

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

What company does Mark Yelsits work for?

Mark Yelsits works for Atheniem.

What is Mark Yelsits's role at Atheniem?

Mark Yelsits is listed as President at Atheniem.

What is Mark Yelsits's email address?

AeroLeads has found 1 work email signal at @l3harris.com for Mark Yelsits at Atheniem.

Where is Mark Yelsits based?

Mark Yelsits is based in Escondido, California, United States while working with Atheniem.

What companies has Mark Yelsits worked for?

Mark Yelsits has worked for Atheniem, L3Harris, Viasat Inc., Northrop Grumman, and Lockheed Martin.

How can I contact Mark Yelsits?

You can use AeroLeads to view verified contact signals for Mark Yelsits at Atheniem, including work email, phone, and LinkedIn data when available.

What schools did Mark Yelsits attend?

Mark Yelsits holds Bs, Computer Science from National University.

What skills is Mark Yelsits known for?

Mark Yelsits is listed with skills including Integration, Systems Engineering, Military, Testing, Security Clearance, Navy, Requirements Management, and Dod.

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