SATCOM Requirements System Engineer

Modern Technology Solutions, Inc. (MTSI) is seeking a SATCOM Requirements Systems Engineer to join our team in El Segundo, CA.
The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the US Space Force's Space Systems Center (SSC). We support the Space Force's acquisition of state of the art satellite communications systems, providing global secure, 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.

Key Responsibilities:

• Support Model-Based Systems Engineering (MBSE) activities to assist with development and maintenance of technical baselines.
• Develop, refine, and manage system and subsystem requirements, ensuring they are clear, traceable, and verifiable.
• Analyze system requirements and participate in verification activities, including review of TRDs, ICDs, and related documentation.
• Work with government and contractor teams to identify and close requirements gaps using tools such as DOORS.
• Support and occasionally lead technical working groups: preparing meeting materials, documenting minutes, tracking actions, and fostering collaborative problem-solving.
• Assist in assessing impacts to the system technical baseline and identifying integration considerations across stakeholders.
• Review program documentation, capture reviewer comments, and collaborate with contractors on adjudication.
• Provide technical input and assist in developing briefings for USSF program leadership.
• Participate in risk, issue, and dependency management activities; help identify disconnects and propose solutions.

Work Environment:

• Location: On-site
• Travel Requirements: Minimal
• Working Hours: Standard

Qualifications: Required:

• Ability to obtain an Active Secret clearance is required for this position
• Bachelor's degree in engineering, physics, mathematics, computer science, or a related technical field
• 3-5 years of experience in systems engineering or requirements management
• Experience with requirements specification, analysis, and verification
• Familiarity requirements traceability tools (e.g., DOORS)
• Strong analytical, problemsolving, and organizational skills
• Excellent communication skills, both written and verbal
• Proficiency with Microsoft Office tools (Word, Excel, PowerPoint)

Preferred Skills and Experience:

• Master's degree in a technical discipline, i.e., engineering, physics, chemistry, mathematics, computer science
• INCOSE ASEP/CSEP/ESEP certification
• MBSE certification (OCSMP)
• Experience with Agile development tools or methodologies
• Knowledge of Jira and Confluence
• Experience with MILSATCOM systems (AEHF, EPS, WGS, Tactical SATCOM, COMSATCOM)
• Background working with DoD or military customers
• Familiarity with space and ground systems such as satellite communications, terminals, or DoD networks

Compensation: The pay range for this position in California is $98,000/year to $122,000/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. Applicants should apply via MTSI's internal or external careers site.
#LI-MM1 #MTSI #MTSIJOBS

• 
  
  
  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 December)
  
  
• 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

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.