Mechanical Engineer

CACI; Belgrade (MT); On-site; USD 60,000 - 123,000; Full time

Job summary

CACI Federal Inc. is seeking a Mechanical Engineer to join on-site in Belgrade, MT.

You will contribute to new product development from concept to production release, applying mechanics, thermodynamics, materials science, and manufacturing knowledge in a fast-paced, high-performance setting. You will design complex systems, run simulations, and create compliant drawings and BOMs while collaborating with cross-functional teams across engineering, manufacturing, and test to deliver innovative

Qualifications

• BS in Mechanical Engineering required; MS preferred.
• 3+ years of mechanical design, analysis, and testing experience.
• Experience with 3D CAD and PLM systems; knowledge of ASME Y14.5 is a plus.

Responsibilities

• Design, model, document mechanical systems and components using first principles.
• Run thermal and structural simulations; perform tolerance analysis.
• Develop drawings, specifications, and BOMs per GD&T standards.
• Collaborate with manufacturing to ensure producibility and cost-effectiveness.
• Support prototype builds, testing, and environmental qualification.

Skills

3+ years mechanical design experience

GD&T ASME Y14.5

Thermal/structural analysis

US Citizenship

Education

B.S. in Mechanical Engineering

M.S. preferred

Tools

SolidWorks

PLM systems

Job description

Job Title: Mechanical 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: Outside Continental US

The Opportunity

CACI Federal Inc. has an immediate opening for Mechanical Engineer located on‑site in Belgrade, MT. The Mechanical Engineer will assist with new product development from concept to production release. You will work in a fast-paced, high-performance environment, collaborating across engineering, manufacturing, and test teams to deliver innovative solutions for advanced hardware systems. This role requires the ability to apply knowledge of mechanics, thermodynamics, materials science, structural analysis, and manufacturing.

Responsibilities

• Use first principles to design, model, and document complex mechanical systems, assemblies, and components.
• Run thermal and/or structural simulations, and complete tolerance stack‑up analysis
• Manage CAD data and configuration using PLM software.
• Develop engineering drawings, specifications, and BOMs that meet ASME Y14.5 GD&T standards.
• Perform design trade studies, tolerance analysis, and material selection for demanding applications.
• Collaborate with manufacturing to ensure designs are producible, cost-effective, and high quality.
• Participate in prototype builds, assembly, and troubleshooting of mechanical hardware.
• Support and execute component- and system‑level testing, including environmental testing (thermal, vibration, shock, etc.).
• Work cross‑functionally with engineers from multiple disciplines to integrate mechanical systems into larger assemblies.
• Contribute to continuous improvement of design, test, and build processes.

Required Qualifications

• B.S. in Mechanical Engineering (M.S. preferred).
• Must be a US Citizen
• 3+ years of industry experience in mechanical design, analysis, and testing or master's degree in mechanical or aerospace engineering
• Experience with 3D modelling tools (SolidWorks preferred), first‑order structural and thermal analysis,
• Knowledge of GD&T (ASME Y14.5) and mechanical drafting standards.
• Ability to work in a fast-paced, high-pressure environment.
• Experience with PLM systems and the engineering release process.
• Strong problem‑solving skills, initiative, and ability to work both independently and in teams.

Desired Qualifications

• Ability to obtain and maintain a TS/SCI clearance if required
• Experience with dynamic system modelling, vibration analysis, and motor sizing.

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:

$60,100 - $123,200

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.