Senior Principal Engineer

Senior Principal Engineer

Company: Allfast Fastening Systems LLC

Primary Location: 1559 W 135th St , Gardena, CA 90249 USA

Workplace Type: On-site

Employment Type: Salaried | Full-Time

Function: Engineering

Equal Opportunity Employer Minorities/Women/Veterans/Disabled

Main Duties & Responsibilities

Summary:
PennAero is hiring a Senior Cost Engineer at our Briles Aerospace Company in Gardena, CA. Briles Aerospace is a certified manufacturer of high-strength aerospace fasteners with decades of industry experience. Our team brings deep technical knowledge and advanced manufacturing techniques to every project, producing precision components that meet exacting aerospace specifications.
About PennAero:
PennAero is a leading manufacturer of highly engineered fasteners and specialized components for critical aerospace, defense, space, and advanced energy applications. We partner with customers to solve their most complex challenges, bringing technical depth and disciplined, agile execution when it matters most. Experience guides our growth-strengthening capabilities and expanding our global platform as markets evolve. To learn more about PennAero's capabilities and commitment to aerospace excellence, visit

We are seeking a highly experienced Senior Principal Engineer to support aerospace manufacturing operations. This role is responsible for developing and optimizing manufacturing methods while establishing, validating, and controlling product and process cost. The ideal candidate brings deep hands-on aerospace experience, strong cost-setting capabilities, and the ability to influence decisions across Engineering, Operations, Supply Chain, and Finance.
Key Responsibilities:
Develop, document, and maintain manufacturing methods, process flows, routings, and work instructions
Analyze existing processes to improve efficiency, quality, yield, and cycle time
Support new product introduction (NPI), including process definition and manufacturability reviews
Lead continuous improvement initiatives using Lean, Six Sigma, or similar methodologies
Provide technical support to Production, Quality, and Engineering teams during troubleshooting and process changes
Establish and validate standard costs, including labor, overhead, material, and processing
Develop cost models and cost estimates for new and existing products
Perform cost roll-ups, variance analysis, and cost reduction opportunities
Support pricing, quoting, margin analysis, and make/buy decisions
Partner with Supply Chain and Manufacturing to identify cost savings and productivity improvements
Support audits, should-cost analysis, and customer cost reviews as needed
Serve as a senior technical authority and advisor across Engineering and Operations
Work closely with Design Engineering, Manufacturing, Quality, Finance, and Supply Chain
Provide data-driven recommendations to leadership related to process and cost decisions
Support DFMEA/PFMEA, risk assessments, and capacity planning activities

Qualifications

Required Qualifications:
Bachelor's degree in Engineering (Manufacturing, Mechanical, Industrial, or related discipline)
10+ years of engineering experience in aerospace manufacturing
Demonstrated experience setting and managing costs in a manufacturing environment
Strong understanding of labor standards, overhead allocation, and manufacturing economics
Proven experience developing and improving manufacturing processes
Ability to read and interpret engineering drawings, specifications, and routings
Strong analytical, problem-solving, and communication skills
Background in cost modeling, standard costing, or should-cost analysis
Compensation
In compliance with all states and cities requiring transparency of pay, the expected pay range for this position is $90,000 - $140,000.
Compensation can vary depending on several factors, including a candidate's qualifications, skills, experience, competencies, and geographic location. Some roles may qualify for extra incentives like equity, commissions, or other variable performance-related bonuses. Further details will be provided by our recruiting team during the interview process.

Benefits

Benefit offerings include Medical Insurance and Prescription Drugs, Dental Insurance, Vision Insurance, Flexible Spending Accounts, Life Insurance, Short-Term Disability, Long-Term Disability Insurance (for eligible employees), Employee Assistance Plan (EAP), Paid Time Off (may include vacation and sick time), Retirement Program, and Other Voluntary Benefits.