Software Defined Radio (SDR) Radio Frequency (RF) Engineer

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Crystal City, Crystal City, VA, US Until 8/23/2026 First posted May 22, 2025 Last posted May 22, 2025
Job description

Overview

Own Your Future.

 

Modern Technology Solutions, Inc. (MTSI) is searching for a Software Defined Radio (SDR) Radio Frequency (RF) Engineer to join our team.  

 

Why is MTSI known as 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 Ownership: 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
    • 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 tuition 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.

Responsibilities

As a Software Defined Radio (SDR) Radio Frequency (RF) Engineer with MTSI you will support a government organization essential to U.S. national security. In this position you will apply knowledge and expertise to ensure the reliability and performance of advanced communication and sensing RF systems through rigorous development and testing. This position will be located in Crystal City, Virginia.

  • Primary experience with Software-Defined Radio (SDR) communication system design, development, testing, and fielding is required
  • Responsible for leading the technical execution of communication systems risk reduction, development, and integration which includes requirements definition/refinement, risk management, and the evaluation of functional, logical, and physical architectures/interfaces
  • Experience with all areas of Interoperable Enterprise Military Communications and Networking Technologies, including Line of Sight (LOS), Beyond Line of Sight (BLOS), onboard and off-board
  • Knowledge and experience with Low Probability of Intercept (LPI) and Low Probability of Detection (LPD) waveforms and practices
  • Knowledgeable experience with common interoperability and communications test and certifications (e.g. AIMS, JITC, NSA, etc..) is highly desired. The position will require an understanding of Communication Systems development, integration, and architecture and associated development systems engineering for communications, networks, and interoperability
  • Familiarity with Advanced Communications and Networking system development, integration, test, procurement, and sustainment, as well as Information Exchange Requirements (IERs), Network Centric Warfare, and Communications/Networking Subsystem integration into the overall Weapon System
  • Ability to lead Government and industry teams in the development of system requirements verification matrix, technical plans, design reviews, test reviews, technical assessments, etc.
  • Manage multiple technology development efforts from concept ideation through product delivery
  • Develop technical briefings and must be experienced at communicating technical content to a wide range of audiences including senior leaders
  • Assist Acquisition Program Managers by documenting and communicating issues and solutions to the customer and contract management structure as needed

 

Qualifications

Required Qualifications:

  • 15+ years of relevant experience with Software Defined Radio development, test, and fielding

  • Proven experience with Department of Defense communication systems

  • Excellent spoken, written, and interpersonal skills

Desired Qualifications:

  • Extensive knowledge and experience with Software Defined Radios, communication and/or sensing architecture and wafeform generation

Education Requirements:

  • Bachelor's degree in engineering, physics, mathematics or related technical degree from an accredited institution
  • Master’s degree in engineering, physics, mathematics or related technical degree from an accredited institution DESIRED

Clearance requirement: Top Secret with SCI (TS/SCI)

 

#mtsi

#100esop

#defenddifferently

#LI-LS1

 

About this role

Summary

Support U.S. national security through RF systems development and testing.

Job title

Software Defined Radio (SDR) Radio Frequency (RF) Engineer

Experience level

15+ years

Industry

engineering

Location requirements

Located in Crystal City, VA; remote work not allowed.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

software defined radiodepartment of defense communication systemsspoken skillswritten skillsinterpersonal skills

Preferred skills

software defined radioscommunication architecturewaveform generation

Specializations

software defined radiocommunication systemsnetworkingtestingintegration
Locations

Structured locations inferred from the posting.

Crystal City, Arlington, VA, USA

On-site City