Network Architect and Solutions Engineer

Modern Technology Solutions, Inc. (MTSI) is seeking a Network Architect and Solutions 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:* Serve as a trusted technical advisor to government leadership for MILSATCOM backhaul and network transport solutions.

• Develop, review, and refine network requirements, CONOPS, and technical performance parameters for SATCOM‑enabled services.
• Provide independent assessment of prime contractor network architectures, ensuring alignment with government standards, mission needs, and enterprise integration requirements.
• Support government evaluation of system trades, technical risks, and architectural alternatives across space, ground, and terrestrial environments.
• Lead the development of networking concepts of operations (CONOPS) and technical requirements for MILSATCOM backhaul and transport services.
• Analyze and advise on MILSATCOM backhaul architectures, including space segment, ground/baseband processing, transport, and enterprise network interfaces.
• Support integration planning between prime SATCOM systems and DoD infrastructure, including DISA services and Service‑specific networks.
• Assess baseband network switching, routing, and transport mechanisms required to connect SATCOM systems to DoD enterprise environments.
• Identify interoperability concerns, interface gaps, and network performance impacts across integrated systems.
• Integrate prime contractor SATCOM solutions with DoD infrastructure, including DISA transport services and Service‑specific networks (Army, Navy, Air Force, Space Force).
• Coordinate closely with prime contractors, government program offices, DISA, and operational users to align designs with mission, security, and operational constraints.
• Support definition and review of interface requirements, network diagrams, and technical documentation ensuring interoperability and standards compliance.
• Analyze network performance parameters including bandwidth, latency, availability, redundancy, and resiliency for MILSATCOM backhaul architectures.
• Provide technical input to acquisition activities, including requirements development, request for proposal (RFP) support, design reviews, and test planning.
• Evaluate and recommend network technologies, protocols, and architectures to improve performance, security, and resiliency across SATCOM and terrestrial segments.
• Participate in and lead technical interchange meetings (TIMs) with government and industry stakeholders to resolve integration challenges.
• Support system verification, validation, and operational acceptance activities for SATCOM and network transport solutions.
• Serve as a technical mentor and subject‑matter expert in MILSATCOM networking and DoD integration best practices.

Work Environment:* Location: On-site

• Travel Requirements: Minimal
• Working Hours: Standard

Qualifications:Required:* Active Secret security clearance

• Bachelor’s degree in engineering, mathematics, physics, computer science, or equivalent technical discipline
• 10+ years of experience supporting military communications or network systems acquisition and/or operations
• 5+ years of experience working in development, research, or advanced engineering environments supporting government programs
• 5+ years of experience interfacing directly with senior stakeholders and contributing to requirements development and technical decision‑making
• Demonstrated experience working in a SETA, SEIT, FFRDC, or government advisory role supporting space and/or networked systems
• Demonstrated expertise in the development of networking CONOPS and technical requirements for military or government systems
• Strong understanding of MILSATCOM architectures, including backhaul services, ground systems, and enterprise network integration
• Knowledge of DoD network environments, including transport, routing, switching, and enterprise services
• Ability to perform independent technical analysis of contractor solutions
• Demonstrated ability to coordinate effectively with senior government, DISA, and industry stakeholders
• Strong written and verbal communication skills, including preparation of technical briefs, recommendations, and decision support materials
• Working knowledge of software or scripting languages used for network modeling, emulation, or simulation

Preferred Skills and Experience:* TS/SCI eligibility or active clearance

• Master’s degree in Engineering, Mathematics, Physics, Computer Science, or equivalent technical discipline.
• Experience with software‑defined networking (SDN), virtualized network functions (VNF), or modern network management architectures.
• Experience supporting DISA architectures, transport services, or enterprise network integration efforts.
• Demonstrated expertise in software development or automation supporting network design, testing, or analysis.
• Familiarity with DISA services, architectures, and transport offerings.
• Experience with DoD acquisition lifecycle, requirements definition, and systems engineering processes.
• Experience working in multi‑domain environments, including space, terrestrial, and enterprise networks
• Systems engineering or program management certifications such as CSEP, ESEP, PMI / PMP

Compensation: The pay range for this position in California is $150,000/year to $187,000/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.

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Secret

Perks and Benefits

======================

• Vacation:

New Hires Accrue 20 days of PTO and 10 Holidays per Year

• Health Insurance:

Zero Deductible Health Plans

• Flexible Schedules:

Flex Schedules

• Professional Development:

Up to $10,000 Annual Education/Training Reimbursement

• ESOP:

Funded Stock Ownership Plan

• 401k Match+:

6% 401k Match + Immediate Vesting

• Bonus Program:

Semi-Annual Bonus Opportunity

• Mentorship:

Career Mentorship Programs

Why is MTSI 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 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 Decemeber)

+ 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 visitwww.mtsi-va.com

EEO Statement

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.

Why is MTSI 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 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 Decemeber)

+ 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