Mechanical Systems Engineer

CACI International Inc; Sterling (VA); On-site; USD 73,000 - 149,000; Full time

Job summary

CACI International Inc is seeking a Mechanical Systems Engineer to support a mission-critical DOW system. You will apply systems and mechanical engineering to develop and sustain mechanical systems, updating designs and documenting changes throughout the lifecycle.

The role focuses on hardware-oriented systems engineering, requirements development, interface definition, and engineering analysis. Collaboration across mechanical, electrical, RF, and software teams is essential.

Qualifications

• Bachelor's degree in Mechanical Engineering, Systems Engineering, or a related field.
• 3+ years of experience in mechanical and/or hardware-oriented systems engineering.
• Experience with requirements development, decomposition, and design support (SRR, PDR, CDR, TRR).
• Experience with mechanical design and analysis tools (SolidWorks, CAD).
• Strong written and verbal communication skills.

Responsibilities

• Apply mechanical and systems engineering expertise to develop solutions that meet functional and performance requirements across production, sustainment, and EOL planning.
• Update engineering documentation to support system lifecycle activities and design changes.
• Contribute to system architectures addressing operational environments, reliability, safety, and survivability.
• Perform requirements decomposition, interface definition, and support for TRR, SRR, PDR, and CDR.
• Support quality, reliability, and safety assessments (FMECA, FRACAS, hazard analysis) and ensure issues are tracked and resolved.
• Use modeling and analysis tools to perform structural, thermal, tolerance, and packaging assessments.
• Collaborate with cross-functional teams to ensure design compatibility and requirements traceability.
• Participate in design reviews and risk/issue resolution activities.
• Support R&D and technology maturation through feasibility analyses and prototype studies.

Skills

SolidWorks/CAD

Requirements decomposition

Systems engineering

Communication skills

Education

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Systems Engineering

Tools

CAD (SolidWorks)

Job description

Job Title: Mechanical Systems Engineer

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: None

Employee Type: Regular

Percentage of Travel Required: Up to 25%

Type of Travel: Continental US

Mechanical Systems Engineer - Position Overview

CACI is seeking a Mechanical Systems Engineer to support delivery of a mission-critical DOW system. In this role, you will apply systems engineering principles and mechanical engineering expertise to develop and sustain mechanical systems- contributing to design updates and lifecycle sustainment that meet customer requirements and mission objectives. You will deliver solutions that satisfy functional and performance needs while maintaining accurate documentation for design updates, configuration changes, and end-of-life (EOL) transitions throughout the system lifecycle.

This position focuses on hardware-oriented systems engineering and select R&D activities, including conceptual and detailed design, requirements development, interface definition, and support to quality and reliability analyses (such as FMECA, FRACAS, and hazard analysis). Responsibilities emphasize analysis, design, modeling, documentation, and cross-functional collaboration rather than hands-on build or inspection work. The ideal candidate collaborates effectively across mechanical, electrical, RF, and other engineering disciplines, is comfortable in complex technical environments, and is familiar with systems engineering practices and processes.

Responsibilities

• Apply mechanical and systems engineering expertise to develop solutions that meet functional and performance requirements while supporting efficient production, sustainment, and EOL planning.
• Update engineering documentation to support system lifecycle activities and any design changes.
• Contribute to system architectures and designs that address operational environments, mission needs, reliability, safety, and survivability.
• Perform development-focused activities such as requirements decomposition, interface definition, and support for TRR, SRR, PDR, and CDR.
• Support quality, reliability, and safety assessments—including FMECA, FRACAS, and hazard analysis, ensuring issues are identified, tracked, and resolved.
• Use industry-standard modeling and analysis tools (e.g., SolidWorks) to perform mechanical and system-level analyses such as structural, thermal, tolerance, and packaging assessments.
• Collaborate with cross-functional teams (mechanical, electrical, RF, software, manufacturing, and test) to ensure design compatibility, integration readiness, and requirements traceability.
• Participate in design reviews, technical working groups, and risk/issue resolution activities, providing clear technical rationale and recommendations.
• Support R&D and technology maturation efforts by evaluating new concepts, materials, and approaches, and by performing feasibility analyses and prototype-level design studies.

Required

• Bachelor's degree in Mechanical Engineering, Systems Engineering, or a related field.
• 3+ years of experience in mechanical and/or hardware-oriented systems engineering.
• Demonstrated experience with requirements development, decomposition, and design support (SRR, PDR, CDR, TRR).
• Experience with mechanical design and analysis tools (SolidWorks, CAD).
• Strong written and verbal communication skills, including participation in technical discussions and design reviews.

Desired

• Ability to obtain and maintain a TS/SCI security clearance.
• 5+ years of experience in mechanical and/or hardware-oriented systems engineering.
• Experience supporting reliability, maintainability, and safety activities (FMECA, FRACAS, hazard analysis).
• Familiarity with systems engineering processes and standards.
• Familiarity with MIL-STD-31000.
• Ability to perform trade studies.
• Proven ability to collaborate effectively with multidisciplinary teams.
• Familiarity with RF systems and design considerations.

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

$72,700 - $149,200

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.