EX Squared is hiring a Sr. Systems Architect (REMOTE with Travel)

At Jobgether, we are looking for a Sr. Systems Architect to lead the design and deployment of advanced communication and networking systems for complex, contested environments. In this role, you will architect end-to-end solutions for mobile and fixed platforms, focusing on 5G ORAN, RF, SATCOM, and tactical network architectures. You will guide a multidisciplinary team to deliver secure, resilient, and high-performance systems.

What You'll Do

• Architect integrated communication systems using RF, SATCOM, IP-based technologies, and 5G ORAN standards.
• Lead and mentor a team of DSP and embedded software engineers to deliver real-time, mission-critical communications solutions.
• Adapt and extend 5G OpenAirInterface stacks to meet low probability of intercept (LPI) and low probability of detection (LPD) objectives.
• Develop and validate system-level approaches for incorporating DSSS and Frequency Hopping into tactical communication networks.
• Conduct link budgets, RF propagation analysis, interference assessments, and performance optimization studies.
• Support integration and field testing of communication systems across fixed, mobile, and UAV platforms.
• Produce technical documentation, system specifications, and R&D deliverables for internal and customer-facing purposes.

What We're Looking For

• Bachelor’s degree in Electrical Engineering, Computer Engineering, or a related field.
• 5+ years of experience in 5G ORAN, Radio/RAN systems, RF or SATCOM systems engineering, DSP, and embedded software.
• Hands-on experience with 5G OpenAirInterface (gNB, EPC/5GC, UE integration).
• Expertise in DSSS, Frequency Hopping, and secure, resilient wireless communications.
• Proficiency with MATLAB, STK, or similar simulation and modeling tools.
• Experience with tactical and commercial MANET radios and hybrid 5G/SATCOM networks.
• U.S. Citizenship and active DoD Secret (or higher) security clearance.

Nice to Have

• Master’s degree preferred.
• Experience with containerized 5G core deployment, network slicing, URLLC/eMBB optimization.
• Experience with UAV communications, RF planning, beamforming, MIMO systems.
• DoD SBIR project experience.

Technical Stack

• 5G ORAN, RF, SATCOM
• OpenAirInterface, DSSS, Frequency Hopping
• MATLAB, STK
• MANET radios

Team & Environment

You will lead and mentor a team of DSP and embedded software engineers and collaborate with cross-functional teams.

Benefits & Compensation

• Competitive base salary: $150,000 – $200,000 USD annually.
• Health, dental, and vision coverage, retirement planning options.
• Collaborative and mission-driven work environment.
• Professional development and growth opportunities.
• Exposure to innovative projects in defense communications.

Work Mode

This is a remote position located in the United States, with required travel of 25–30%.

Jobgether is an equal opportunity employer.