Systems Engineer - Defense Integrated Systems

SelectTech Services Corp; Palmer Lake (CO); On-site; USD 110,000 - 160,000; Full time

Job summary

SelectTech Services Corp is seeking a highly skilled Systems Engineer to lead the design, integration, and lifecycle execution of complex defense systems such as aircraft, expeditionary shelters, and secure SCIF environments. You will translate operational needs into certifiable designs spanning mechanical, electrical, power, network, and software subsystems to deliver mission-ready solutions.

Ideal candidates bring 5+ years of defense/aerospace systems engineering, strong MBSE capabilities

Qualifications

• Bachelor’s degree in a technical field (Systems, Aerospace, Electrical, Mechanical)
• 5+ years of systems engineering or integrated product development in defense/aerospace
• Experience with military platforms, aircraft systems, or deployable defense infrastructure
• Strong requirements development, management, and traceability skills
• Familiarity with DoD acquisition environments and technical documentation standards
• Ability to communicate complex concepts to diverse stakeholders
• Experience with aircraft modification programs (e.g., C-130, C-17) and with modular shelter or SCIF environments
• MBSE skills and experience with SysML or similar tools
• Ability to obtain and maintain a Top-Secret Security Clearance

Responsibilities

• Lead systems engineering across the full lifecycle: requirements, architecture, integration, verification, and validation
• Develop and maintain ICDs, CONOPS, and technical baselines
• Architect and integrate multi-domain defense systems (aircraft, shelter, SCIF)
• Coordinate cross-domain integration across mechanical, electrical, power, thermal, EMI/EMC, network, and software
• Support aircraft modification efforts, minimizing airworthiness and certification risk
• Conduct technical trade studies balancing performance, cost, schedule and risk
• Develop system verification/validation plans, test procedures, and acceptance activities
• Collaborate with program management, manufacturing, test, and customers to ensure alignment
• Identify and mitigate technical risks
• Contribute to proposals with ROMs, schedules, architectures, and technical volumes
• Apply core values: rapid deployment, dependable operation, purposeful design

Skills

Systems Engineering

Requirements management

MBSE

System architecture

Acoustic/EMI/EMC considerations

Technical communication

Risk management

Defense knowledge

Aircraft modification experience

Education

Bachelors degree in Systems Engineering or related field

Tools

SysML

Cameo

DOORS

Job description

We are seeking a highly skilled and motivated Systems Engineer to support the design, integration, and lifecycle execution of complex defense systems spanning military aircraft, expeditionary shelter systems, and secure (SCIF) environments. This role focuses on translating operational needs into technically sound, certifiable designs that integrate mechanical, electrical, power, network, and software subsystems into cohesive, mission-ready solutions. The ideal candidate will embody our core values: Deploy Faster, Operate with Confidence, and Design with Purpose, ensuring that solutions are rapidly delivered, reliable in execution, and intentionally designed to meet mission objectives.

What You’ll Do:

• Lead systems engineering activities across the full system lifecycle, including requirements development, architecture definition, trade studies, integration, verification, and validation.
• Develop, manage, and maintain system requirements, Interface Control Documents (ICDs), Concepts of Operations (CONOPS), and technical baselines.
• Architect and integrate multi-domain defense systems, including:
• Aircraft-installed systems (ISR, communications, power distribution, and networking)
• Transportable and modular expeditionary shelter systems
• SCIF and secure communications environments
• Coordinate integration efforts across mechanical, electrical, power, thermal, EMI/EMC, network, and software domains.
• Support aircraft modification efforts, including non-permanent (e.g., T-2/T-3) installations, while minimizing airworthiness and certification risk.
• Perform technical trade studies to balance performance, cost, schedule, and program risk.
• Develop and support system verification and validation plans, test procedures, and acceptance activities (ground and flight test, as applicable).
• Collaborate with program management, manufacturing, test, and customers to ensure technical alignment and successful execution.
• Identify, track, and mitigate technical risks throughout design and integration activities.
• Contribute to proposal development efforts, including ROMs, schedules, system architectures, and technical volumes, as required.
• Apply our core values in daily work: Deploy Faster by streamlining integration and delivery processes, Operate with Confidence by ensuring systems are reliable and certifiable, and Design with Purpose by making intentional, mission-focused design decisions.

What You Bring:

• Bachelor’s degree in Systems Engineering, Aerospace Engineering, Electrical Engineering, Mechanical Engineering, or a related technical field.
• 5+ years of experience in systems engineering or integrated product development within defense or aerospace environments.
• Experience supporting military platforms, aircraft systems, or deployable/expeditionary defense infrastructure.
• Strong understanding of:
• Requirements development, management, and traceability
• System architecture definition and subsystem integration
• Verification and validation planning and execution
• Familiarity with DoD acquisition environments and technical documentation standards.
• Ability to clearly communicate complex technical concepts to both technical and non-technical stakeholders.
• Experience with military aircraft modification programs (e.g., C-130, C-17, ISR or special mission platforms).
• Experience with expeditionary, transportable, or modular shelter systems.
• Experience with SCIF design, secure networking, or TEMPEST considerations.
• Familiarity with applicable MIL-STD requirements (e.g., MIL-STD-810, MIL-STD-461, MIL-STD-704).
• Experience using Model-Based Systems Engineering (MBSE) tools such as SysML, Cameo, DOORS, or similar.
• Background in communications, SATCOM, ISR, or mission systems integration.
• Must be able to qualify for and maintain a Top-Secret Security Clearance.

Why Join SelectTech?

At SelectTech, you’ll work alongside a team that values innovation, precision, and purpose. Your expertise will directly contribute to solutions that deploy faster, operate with confidence, and are designed with purpose—helping us drive mission success.