Sr Spec, Mechanical Engrg

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Full Time San Leandro, CA, US

25 days ago Requisition

Salary Range: $ To $ Annually

Fisica, Inc. is a premier manufacturer of advanced defense products, specializing in the design and production of airborne and ground-based antennas, as well as cutting-edge electromagnetic systems and simulators. Headquartered in San Leandro, California, with additional operations in Simi Valley, Fisica plays a vital role as a trusted partner to leading defense primes and the U.S. Department of Defense.

Our company operates as
- ATI, Randtron, Datron and Space Vector
—each bringing deep expertise and innovation to the defense sector. Led by a seasoned management team, Fisica is committed to excellence in engineering, manufacturing, and mission-critical solutions that enhance national security.

At Fisica, we foster a strong, collaborative work culture that values individual contributions and empowers our employees. Our commitment to innovation, integrity, and teamwork makes us a leader in the defense industry and an exceptional place to build a career.

We are seeking a Senior Mechanical Engineer
to lead the design and development of complex mechanical systems supporting advanced antenna products.

This role is intended for an experienced engineer who brings strong technical leadership, owns complex projects, and drives engineering solutions across disciplines and organizations.

• Lead the design and development of complex mechanical systems, from component-level to full system integration
• Own full product lifecycle activities including concept development, detailed design, qualification, and production support
• Develop and review CAD models, drawings, and technical data packages (GD&T per ANSI Y14.5) using PTC Creo
• Perform and/or guide advanced analysis (FEA, hand calcs), leveraging tools such as ANSYS
• Plan, develop, and oversee testing activities, including test plans, procedures, and data analysis
• Lead investigations and resolve complex technical problems using analysis and creative solutions
• Drive moderate to substantial improvements to engineering processes, tools, and methodologies
• Provide mentorship, coaching, and technical direction to engineers and designers
• Interface directly with customers, suppliers, and cross-functional stakeholders
• Lead and present at design reviews (internal and external)
• Contribute to departmental goals, planning efforts, and continuous improvement initiatives
• Ensure compliance with company processes for quality, configuration management, and product development

• Bachelor’s degree in Mechanical Engineering or related field
• 6+ years of relevant experience (or 4+ years with a graduate degree)
• Strong proficiency in CAD design and documentation (PTC Creo preferred)
• Solid understanding of GD&T (ANSI Y14.5)
• Demonstrated experience leading mechanical design efforts or managing projects
• Strong analytical and problem-solving capabilities

• Aerospace or defense industry experience
• Experience with Windchill PDMFEA experience (ANSYS strongly preferred)
• Expertise in design for manufacturing and producibility
• Experience with composites, machining, and fabrication processes
• Familiarity with RF systems, antennas, or radome design
• Due to specific US Government contract requirements, dual citizenship may not be accepted. This position requires eligibility to obtain and maintain US Government security clearance.

• Competitive salary and benefits package!
• Generous paid time off.
• 401k with 6% match and vesting is immediate.
• Strong work-life balance.
• Tuition Reimbursement.
• Paid paternal leave.

In compliance with pay transparency requirements, the salary range for this role is $100,000 - $185,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. Fisica Inc. also offers a variety of benefits, including relocation stipend, 401(k), PTO, EAP, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, and schedule type.

Fisica is proud to be an Equal Opportunity Employer. Fisica is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, military and veteran status, disability, genetic information, citizenship status,…