Mechanical Engineer

About the Company

Founded in 1981, Combined Systems, Inc. (CSI) is the recognized leader in the design, manufacture, and marketing of security products for global defense and law enforcement markets. CSI is the premier supplier of less-lethal munitions and launching systems, serving riot control, police tactical teams, corrections officers, and military units worldwide. Our blue-chip customer base includes the U.S. Army, U.S. Marine Corps, U.S. Navy, and a majority of U.S. law enforcement agencies, as well as foreign military and security forces.

The Mechanical Engineer supports the design, development, testing, and production of lesslethal munitions, pyrotechnic devices, tactical launchers, and precisionengineered defense components. This is not a siloed design role: the engineer is accountable for how CSI products are built, how they perform in the field, and how the manufacturing processes that produce them are controlled and improved over time. This role focuses on mechanical design, product reliability, manufacturing support, and continuous improvement within a highmix, defense grade production environment.

• Mechanical
  Design — Create and refine 3D models, assemblies, and detailed drawings for munitions, launchers, and mechanical subsystems.
• Engineering Analysis — Perform stress, thermal, vibration, and tolerance analyses to ensure product performance and safety.
• Prototype Development — Build and evaluate prototypes; conduct iterative design improvements based on test data.
• Testing & Validation — Develop and execute test plans for ballistic, environmental, and functional evaluations. Apply statistical process control and data-driven decision making to monitor process capability, reduce scrap, and identify automation opportunities.
• Manufacturing Support — Troubleshoot production issues, optimize manufacturability, and support tooling and fixture design.
• Documentation — Generate BOMs, specifications, ECNs, and technical reports in accordance with internal and defenseindustry standards.
• Cross Functional Collaboration — Work closely with R&D, chemistry, ballistics, quality, and production teams to support new product introduction and continuous improvement.
• Compliance & Safety — Ensure designs meet applicable NIJ, ATF, DoD, and internal safety requirements for energetic and pressure bearing systems.
• Supplier Interaction — Evaluate vendor components, materials, and manufacturing capabilities.

• Bachelor’s degree in Mechanical Engineering or a closely related field.
• Proficiency with CAD software (Solid Works required).
• Strong understanding of mechanical design principles, GD&T, and manufacturing processes.
• Working knowledge of statistical process control, data-driven decision making, and measurement system capability.
• Ability to perform engineering calculations and interpret test data.
• Experience working in a manufacturing or product development environment.
• Strong communication, documentation, and problem solving skills.
• Ability to work handson with prototypes, test equipment, and production tooling.
• Proficiency with the Microsoft Office suite (Word, PowerPoint, Excel).
• Self-starter with good time management skills and a willingness to communicate proactively.

• Experience with energetic materials, pyrotechnics, or pressure bearing mechanical systems.
• Background in defense, aerospace, or munitions manufacturing.
• Familiarity with ballistic testing, environmental testing, or reliability engineering.
• Knowledge of Lean manufacturing, DFMA, or continuous improvement methodologies.
• Experience designing tooling, fixtures, or test equipment.
• Exposure to regulatory compliance for defenserelated products.
• Project management experience or formal training.

• Ability to pass preemployment drug screening
• Ability to pass an ATF criminal background check
• Ability to pass random drug screenings
• Must have reliable transportation.

• Competitive pay with opportunities for performance based increases.
• Work for a respected global leader serving defense and law enforcement markets.
• Stable, longterm career opportunities in a growing organization.
• ISOcertified facility emphasizing quality, safety, and innovation.

Enjoy a consistent 8hour shift, Monday through Friday from 7:30am to 4:00pm in a climate controlled manufacturing environment designed for yearround comfort. Most work is performed seated, while handson training and clear, structured processes support efficiency, safety, and longterm success.

Our comprehensive benefits package includes paid time off (PTO), paid holidays, medical coverage with an HRA Buy Up Plan option (you pay the premium, we pay the bills), dental and vision insurance, a 401(k)-retirement plan. Eligible for year end bonus based on individual contributions to the success of the company and tied to overall company performance.