Senior Mechanical Design Engineer

ATC Automation•Simi Valley, CA

30d•$120,000 - $140,000•Hybrid

About The Position

ATC Automation is seeking a hands-on and innovative Senior Mechanical Design Engineer to lead the mechanical development of custom automation machinery and tooling systems at our Simi Valley, CA location. Remote opportunities may be considered for highly qualified candidates, with occasional travel required to Simi Valley. Projects range in scale and complexity, from rapid R&D initiatives to fully integrated, high-throughput production equipment. You will work directly with customers to define requirements and collaborate with a multidisciplinary engineering team to deliver robust, high-performance automation solutions. With a competitive salary ranging from $120,000 to $140,000, this role rewards your expertise while encouraging both personal and professional growth. ATC Automation offers a comprehensive benefits package, including Medical, Dental, Vision, 401(k), Life Insurance, Health Savings Account, Flexible Spending Account, and Paid Time Off. If you are passionate about creating advanced automation solutions and making a tangible impact, this is the perfect opportunity to showcase your talents. Who We Are Since 1977, ATC has been redefining what's possible in custom automation. From concept to commissioning, we partner with leading brands across the globe to design and deliver custom machinery that drives efficiency, precision, and long-term performance. Our automation expertise spans critical industries that shape the way we live and move-Life Science, Transportation, Consumer Products, and General Industry.

Requirements

Proven track record in custom automation and machine design
Strong ability to size and specify automation peripherals, including actuators, sensors, and vision systems
Expert-level proficiency in SolidWorks (or equivalent CAD software)
Mastery of engineering drawings, tolerancing, and GD&T (Y14.5M-2009)
Deep knowledge of mechanical components, materials, and fabrication processes (machining, welding, sheet metal)
Proficiency with basic controls and automation system concepts
Excellent problem-solving, analytical, and decision-making skills
Strong written and verbal communication skills
6+ years of hands-on experience designing custom automated equipment
Proven ability to specify and troubleshoot pneumatic systems and components
Expertise in designing fixtures, jigs, and custom tooling for precision assembly or automation applications

Nice To Haves

BS or higher degree in Mechanical Engineering or related field
10+ years of experience in a mechanical design role within custom automation, machine building, or related industries
Familiarity with compliance standards such as CE, NFPA 79, and SEMI S8
Hands-on experience troubleshooting and improving the performance of automated machinery
Ability to specify and integrate vision equipment, including cameras, lenses, lighting, filters, and mounting systems

Responsibilities

Lead the mechanical design of systems, mechanisms, and components for custom automated machinery and tooling
Develop and enforce best practices, design standards, and continuous improvement initiatives
Integrate off-the-shelf and custom automation components, including robotics, actuators, sensors, and vision systems
Deliver projects on schedule and within budget; coordinate progress with Project Managers and cross-functional stakeholders
Generate accurate 3D CAD models and fully detailed 2D drawings for manufacturing and assembly
Mentor and train junior engineers, reviewing and approving their work for accuracy and quality
Support the build and commissioning of equipment, providing hands-on guidance to production teams
Build and test mechanical prototypes to validate concepts prior to full-scale deployment
Collaborate with controls and software teams to ensure seamless integration of mechanical and electronic subsystems
Manage external suppliers to ensure component quality, lead times, and compatibility
Work closely with customers to refine requirements, align design intent, and ensure functional success
Support onsite equipment deployment, installation, and troubleshooting as needed