ESS Terminals Systems Engineer

MTSI

El Segundo, USonsitePosted Jul 24, 2026
Posting intelligenceActively listedReposted 3×, possible evergreen/ghost posting

Skills

confluenceexceljira

About the role

Modern Technology Solutions, Inc. (MTSI) is seeking an ESS Terminals Systems Engineer to join our team in El Segundo, CA.

The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge SE&I for the Space Force’s Space System Command. We support the Space Force’s acquisition of state-of-the-art MILSATCOM systems, providing secure global, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.

Work Environment:

Location: On-site

Travel Requirements: Minimal

Working Hours: Standard

Qualifications:

Required:

Active DoD Secret clearance

Bachelor’s degree in engineering, mathematics, physics, computer science, or related technical field

8+ years’ engineering experience

5+ years’ experience in Systems Engineering, such as requirements and technical baseline development, test planning and integration, verification, and validation

Experience developing or managing requirements or Interface Control Documents (ICDs) for complex systems

Strong interpersonal skills, communication (oral and written), and presentation skills

Proficient in Microsoft Office products (Word, Excel, Powerpoint)

Due to security requirements, work is required to be on-site in a secure facility

Desired Skills and Experience:

Active Top Secret clearance

Master’s degree in technical field, such as engineering, mathematics, physics, or computer science, or related technical field

Experience with MILSATCOM systems, such as AEHF, PTS, EPS, WGS, and FAB-T terminal programs

Experience working with military and DoD civilians

Experience with ground and airborne systems, such as terminals and networks

Knowledge and experience in Agile Development and collaboration tools (Jira/Confluence)

Professional certifications (e.g., PMP, INCOSE CSEP or ESEP)

Compensation: The pay range for this position in California is $135,000/year to $169,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled.

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Secret

Perks and Benefits

Vacation:

New Hires Accrue 20 days of PTO and 10 Holidays per Year

Health Insurance:

Zero Deductible Health Plans

Flexible Schedules:

Flex Schedules

Professional Development:

Up to $10,000 Annual Education/Training Reimbursement

ESOP:

Funded Stock Ownership Plan

401k Match+:

6% 401k Match + Immediate Vesting

Bonus Program:

Semi-Annual Bonus Opportunity

Mentorship:

Career Mentorship Programs

Why is MTSI a great place to work

Interesting Work:

Our co-workers support some of the most important and critical programs to our national defense and security.

Values:

Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.

100% Employee Owned:

We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.

Great Benefits - Most Full-Time Staff Are Eligible for:

Starting PTO accrual of 20 days PTO/year + 10 holidays/year

Flexible schedules

6% 401k match with immediate vesting up to $9k annually

Semi-annual bonus eligibility (July and Decemeber)

Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account

Up to $10,000 in annual educational reimbursement

Other company funded benefits, like life and disability insurance

Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success:

We have grown every year since our founding in 1993.

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visitwww.mtsi-va.com

Why is MTSI a great place to work

Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security.

Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.

100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.

Great Benefits - Most Full-Time Staff Are Eligible for:

Starting PTO accrual of 20 days PTO/year + 10 holidays/year

Flexible schedules

6% 401k match with immediate vesting up to $9k annually

Semi-annual bonus eligibility (July and Decemeber)

Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account

Up to $10,000 in annual educational reimbursement

Other company funded benefits, like life and disability insurance

Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success: We have grown every year since our founding in 1993.

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

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