Principal Mechanical Design Engineer

Round-Peg Solutions (RPS) Limited; Los Angeles (CA); On-site; USD 200,000 - 280,000; Full time

Benefits offered by this job

Equity

Benefits

Job summary

Round-Peg Solutions (RPS) Limited is seeking a Principal Mechanical Design Engineer to own the design and development of complex aerospace mechanical systems from concept through prototyping, integration and qualification. The role emphasizes hands-on leadership and rapid progression from CAD to testing and production.

The ideal candidate will have significant aerospace/mechanical hardware experience, advanced CAD skills (SolidWorks), and a proven track record of delivering rugged,

Qualifications

• Significant experience in mechanical design engineering within aerospace, defence or complex hardware development.
• Strong background designing mechanisms, structures, mechanical assemblies or electromechanical systems.
• Advanced SolidWorks or equivalent CAD skills, including complex assemblies and detailed interfaces.
• Knowledge of GD&T, materials, structural analysis, manufacturing methods and environmental requirements.
• Experience taking new hardware from initial design through prototype builds, testing and production.

Responsibilities

• Leading clean-sheet mechanical design, 3D CAD development and complex assembly integration.
• Designing mechanisms, actuation systems, deployment hardware and structural interfaces.
• Developing ruggedised aerospace hardware capable of operating under demanding environmental conditions.
• Solving engineering challenges involving structural loads, vibration, thermal effects and mechanical integration.
• Taking hardware through prototyping, manufacturing, qualification, testing and production transition.

Skills

Mechanical design

Aerospace

SolidWorks

FEA

GD&T

Prototyping

Manufacturing integration

Tools

FEA software

Job description

Principal Mechanical Design Engineer | Aerospace Systems

$200,000–$280,000 Base + Equity + Benefits

Are you a Principal Mechanical Design Engineer who enjoys turning challenging concepts into hardware that actually gets built? Have you developed complex mechanical assemblies, structures or mechanisms for demanding aerospace applications? Would you enjoy joining a fast-moving engineering team where you can own designs, make decisions and see your work progress quickly into manufacturing and testing? If so, this opportunity may be the right next step for you.

An expanding aerospace and defence engineering business is developing new hardware for demanding operating environments. Engineers work in small, multidisciplinary teams with a strong emphasis on practical design, rapid development and getting products built and tested.

The Principal Mechanical Design Engineer will lead the design and development of complex mechanical systems, taking ownership from early concepts and detailed CAD through prototyping, integration and qualification.

As the Principal Mechanical Design Engineer your responsibilities will include

• Leading clean-sheet mechanical design, 3D CAD development and complex assembly integration
• Designing mechanisms, actuation systems, deployment hardware and structural interfaces
• Developing ruggedised aerospace hardware capable of operating under demanding environmental conditions
• Solving engineering challenges involving structural loads, vibration, thermal effects and mechanical integration
• Taking hardware through prototyping, manufacturing, qualification, testing and production transition

As the Principal Mechanical Design Engineer you will bring

• Significant experience in mechanical design engineering within aerospace, defence or complex hardware development
• Strong background designing mechanisms, structures, mechanical assemblies or electromechanical systems
• Advanced SolidWorks or equivalent CAD skills, including complex assemblies and detailed interfaces
• Knowledge of GD&T, materials, structural analysis, manufacturing methods and environmental requirements
• Experience taking new hardware from initial design through prototype builds, testing and production

Experience with deployment mechanisms, launcher systems, FEA, MIL-STD-810 or ruggedised aerospace hardware would be advantageous.

The Principal Mechanical Design Engineer will remain hands‑on, working directly with engineering and test teams while influencing important technical decisions.

Offering $200,000–$280,000 base salary, equity and comprehensive benefits, this is an opportunity to develop new aerospace technology and take ownership of challenging engineering programmes.

All successful applicants will be contacted within two working days.