RF and Antennas Systems Engineer

CACI International Inc; Sterling (VA); On-site; USD 94,000 - 198,000; Full time

Job summary

CACI International Inc. in Sterling, VA, is seeking an RF and Antenna Systems Engineer to design, develop, integrate, and test advanced RF/antenna solutions for defense applications. The role emphasizes phased array and beamforming architectures across the lifecycle.

Requires a BS in Electrical Engineering or related field and 5+ years of RF/antenna experience, with hands-on test equipment skills. Active TS/SCI clearance is preferred. Travel up to 10% locally.

Qualifications

• Bachelor’s degree in Electrical Engineering, Computer Engineering, Physics, or related technical field.
• 5+ years of experience in RF systems, antenna systems, or related mission applications.
• Experience supporting design, analysis, integration, and test of RF and antenna systems.
• Hands‑on experience with RF test equipment such as network analyzers, spectrum analyzers, and power meters.
• Active TS/SCI clearance is preferred.

Responsibilities

• Support the design, development, integration, and test of RF, phased array, and reflector antenna systems.
• Contribute to system and subsystem architectures, requirements, and trade studies for antennas, apertures, beamforming, RF distribution networks, feeds, and related hardware.
• Perform system-level analyses including RF propagation, link budgets, range estimates, cascade analysis, interference assessments, and sensitivity evaluations.
• Support prototype development, fabrication, and assembly of RF systems and antenna hardware.
• Develop and execute test plans for laboratory, chamber, range, and field testing; analyze results and recommend design improvements.
• Document technical work products and present analyses, test results, and recommendations to internal teams and customers.
• Support proposal efforts, IRAD activities, and other technical business development tasks as needed.
• Collaborate effectively across multidisciplinary engineering teams.

Skills

RF systems experience

Antenna systems

System requirements development

Team collaboration

Strong communication skills

Independent / fast-paced work

Education

Bachelor's degree in Electrical Engineering or related field

Master's degree ( Desired )

Tools

Microwave Office

Keysight Genesys

MATLAB

Python

Job description

Job Title: RF and Antennas Systems Engineer

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: None

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

* * *

The Opportunity

CACI is seeking an RF and Antenna Systems Engineer to support the design, development, integration, and test of advanced RF and antenna solutions for mission-critical defense applications. This role focuses on phased array antennas, reflector antenna systems, beamforming architectures, and RF subsystem integration across the engineering lifecycle—from concept development and requirements definition through prototype development, test, and transition to fielded systems.

You will work in a collaborative environment with multidisciplinary engineering teams to help deliver innovative, practical solutions for complex technical challenges.

Responsibilities

• Support the design, development, integration, and test of RF, phased array, and reflector antenna systems.
• Contribute to system and subsystem architectures, requirements, and trade studies for antennas, apertures, beamforming approaches, RF distribution networks, feeds, and associated hardware.
• Perform system-level analyses including RF propagation, link budgets, range estimates, cascade analysis, interference assessments, and sensitivity evaluations.
• Support prototype development, fabrication, and assembly of RF systems and antenna hardware.
• Develop and execute test plans and procedures for laboratory, chamber, range, and field testing; analyze results and recommend design improvements.
• Document technical work products and present analyses, test results, and recommendations to internal teams and customers.
• Support proposal efforts, IRAD activities, and other technical business development tasks as needed.
• Collaborate effectively across multidisciplinary engineering teams.

Qualifications

Required:

• Bachelor’s degree in Electrical Engineering, Computer Engineering, Physics, or a related technical field.
• 5+ years of experience in RF systems, antenna systems, or related mission applications.
• Experience supporting the design, analysis, integration, and test of RF and antenna systems.
• Working knowledge of RF propagation, link budgets, range estimates, cascade analysis, interference effects, and system sensitivity.
• Experience supporting development of system and subsystem technical requirements.
• Hands‑on experience with RF test equipment such as network analyzers, spectrum analyzers, and power meters.
• Familiarity with antenna performance metrics such as gain, beamwidth, sidelobes, efficiency, scan loss, and aperture illumination.
• Strong written and verbal communication skills.
• Ability to work independently and collaboratively in a fast‑paced environment.

Desired

• Master’s degree or higher in Electrical Engineering, Electromagnetics, RF/Microwave Engineering, or a related field.
• Experience with phased arrays, reflector antenna systems, AESA, or digital/hybrid beamforming.
• Experience with antenna testing, array calibration, beam steering validation, or near‑field/far‑field measurements.
• Experience with tools such as Microwave Office, Keysight Genesys, MATLAB, and/or Python.
• Familiarity with electromagnetic modeling, antenna simulation, and RF analysis tools.
• Experience supporting defense, intelligence, or other government mission customers.
• Active TS/SCI clearance.

What You Can Expect

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The Proposed Salary Range For This Position Is

$94,400 - $198,200

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.