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Communications Systems Expert

Modern Technology Solutions, Inc.
401(k)
United States, California, El Segundo
Mar 17, 2026
We are seeking a highly skilled Communications Systems Expert with a focus on RF Engineering to join our team supporting advanced space systems and/or missile defense systems.
This pivotal role requires expertise in analyzing and optimizing communication systems, including determining link margins, evaluating waveforms, and calculating data rates to ensure mission success in challenging environments.
The ideal candidate will have extensive experience in Radio Frequency (RF) engineering, signal propagation, and system-level communications design for aerospace or defense applications. This position involves collaboration with cross-disciplinary teams, including systems engineering, payload integration, and mission planning, to design and verify resilient communication architectures.
Key Responsibilities:
  • Design, analyze, and optimize RF communication systems for space and/or missile platforms.
  • Calculate link budgets by evaluating factors such as transmitter power, receiver sensitivity, antenna characteristics, losses, environmental impacts, and more.
  • Analyze and select waveforms tailored to mission-specific communication requirements, such as secure transmission, signal robustness, and noise immunity.
  • Determine data rates and system performance requirements across multiple communication links, including space-to-ground, missile-to-satellite, and platform-to-platform architectures.
  • Implement models for RF propagation and predict system performance under varying environmental conditions (e.g., plasma effects during re-entry, space vacuum, missile speeds, atmospheric attenuation).
  • Perform system trade studies to evaluate communication technologies, such as frequency bands, modulation schemes, coding techniques, and encryption.
  • Collaborate with payload integration teams to ensure communication subsystems align with overall system design, constraints, and mission goals.
  • Provide expertise in communication standards, security protocols, and classifications specific to DoD space and missile programs.
  • Produce technical reports, link budget analyses, and presentations for review by government stakeholders and program leadership.
Required Skills and Expertise:
  • Extensive experience with RF link budget analysis and understanding of system-level trade-offs.
  • Strong background in waveform design, and modulation techniques.
  • Expertise in calculating and optimizing data rates across communication links while ensuring reliability and minimizing latency.
  • Knowledge of RF propagation in both terrestrial and space environments, including challenges such as Doppler shift, attenuation, interference, and plasma effects during re-entry.
  • Understanding of antenna theory and design principles for spaceborne and missile communications systems.
  • Familiarity with key communication standards and protocols, including MIL-STD.
  • Strong analytical and problem-solving skills with the ability to work in a fast-paced, mission-driven environment.
  • Exceptional communication abilities, including technical writing and presenting complex analyses to technical and non-technical audiences.
Education and Experience:
  • Bachelor's Degree in Electrical Engineering, Communications Engineering, RF Engineering, or related field (Master's or Ph.D. preferred).
  • 8+ years of experience designing and analyzing RF systems for space or missile platforms.
Required Security Clearance:
  • Must have Active Secret Clearance with TS/SCI Eligibility.
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  • 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 www.mtsi-va.com

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.


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