Senior Mechanical Engineer

Job Description

Job Description

Senior Mechanical Engineer

26-060

Invariant Corporation is seeking a highly experienced Mechanical Engineer to support upcoming and anticipated defense programs. You will provide technical leadership in the design, development, and qualification of advanced weapon system components for C-UxS programs. In this role, you will serve to drive complex mechanical design solutions, ensuring they meet stringent military performance, reliability, and producibility requirements.

Duties Include:

• Support the design and development of mechanical subsystems for weapons platforms, including structures, housings, actuators, mechanisms, and more.
• Provide technical oversight of CAD modeling, engineering drawings, and documentation in compliance with ASME Y14 and MIL-STD requirements.
• Guide material selection and manufacturing processes to ensure performance in extreme conditions, including high shock, vibration, and thermal environments (MIL-STD-810).
• Lead design reviews (PDR, CDR) and present technical content to internal leadership, prime contractors, and government customers.
• Support root cause investigations of hardware failures, develop corrective actions, and ensure lessons learned are applied program-wide.
• Collaborate with systems engineering, integration & test, and manufacturing teams to ensure requirements are met and products are production-ready.
• Contribute to long-term technology insertion and mechanical design innovation across the product line.

Requirements:

• Candidate must have a Bachelors degree in Mechanical engineering or greater with a minimum of 10 years of relevant experience.

• Experience creating robust engineering drawings for manufacturing using Geometric Dimensioning & Tolerancing (GD&T).
• Strong communication and documentation skills.
• Minimum Active Secret Clearance.
• Proof of U.S. Citizenship is a requirement for positions requiring a Security Clearance.
• Current Passport.

• Experience using Arena Product Lifecyle Manager (PLM) or similar.
• Experience using Solidworks CAD for mechanical design and FEA.
• Travel approx. 10-20% on average with surges of 2-3 weeks at a time one to two times a year.

Preferred Qualifications: Requirements:

• Proven success in a team environment, working collaboratively with peers across a variety of backgrounds and skillsets, including engineering, technicians, and machinists.
• Knowledge of common mechanical, electrical, and optical components, mounting, interfaces, bonding, etc.
• Experience applying design for manufacturing and assembly principles.
• Hands-on problem solving using rapid prototyping and fabrication skills in a fast-paced environment.
• Experience in designing additive manufacturing processes.

Requires ability to:

• Demonstrate innovation, quick learning, excellent communication skills and adaptive thinking.
• Work independently with minimal supervision, making rational decisions, and exercising good judgment is essential
• Lead a group of engineers through the maturation of a product and interface regularly with Government Customers providing updates from the development team

Work Environment:

• Sitting for extended periods of time at desk, in telecoms/meetings with peers, management.
• Lift and/or move up to 50 lbs.
• Ability to use stairs for access between floors and multiple buildings at customer worksites and Invariant facilities during travel.

This position is expected to be performed only in the state of Alabama.

Subject to the provisions of Code of Alabama 40-18-370, the Company shall give good faith consideration to Alabama residents for employment at the Project.

Invariant Corporation is an Equal Opportunity Employer. All qualified applicants will be considered without regard to race, color, religion, sex, national origin, disability, or veteran status.

Invariant is a drug-free workplace.

Headquartered in Huntsville, Alabama, Invariant is a 100% employee owned, non-traditional defense contractor providing advanced engineering solutions to support national defense, homeland security, and law enforcement. We are ISO 9001 certified with secure facilities, labs, and high bay space performing advanced manufacturing, integration, assembly, and testing of mission critical systems. Join a team where innovation fuels impact. At Invariant, every voice contributes, and every employee-owner shares in the success of our mission to protect those who protect us. We’re home to engineers, developers, and specialists—web builders of mission-critical systems, united by purpose and driven by pride. As a 100% employee-owned company, your work doesn’t just power national defense—it helps power your future. Ready to take the next step in your career? Explore our current openings and discover how you can make a lasting impact while building ownership in everything you help create.

Company Description

Headquartered in Huntsville, Alabama, Invariant is a 100% employee owned, non-traditional defense contractor providing advanced engineering solutions to support national defense, homeland security, and law enforcement. We are ISO 9001 certified with secure facilities, labs, and high bay space performing advanced manufacturing, integration, assembly, and testing of mission critical systems. Join a team where innovation fuels impact. At Invariant, every voice contributes, and every employee-owner shares in the success of our mission to protect those who protect us. We’re home to engineers, developers, and specialists—web builders of mission-critical systems, united by purpose and driven by pride. As a 100% employee-owned company, your work doesn’t just power national defense—it helps power your future. Ready to take the next step in your career? Explore our current openings and discover how you can make a lasting impact while building ownership in everything you help create.