Principal Cost Engineer

Supernal•Irvine, CA

37d•Onsite

About The Position

Supernal is an Advanced Air Mobility (AAM) company that's developing an electric vertical take-off and landing (eVTOL) vehicle and the ground-to-air ecosystem to support the emerging industry. By creating a sustainable, integrated, and human-centered ecosystem, we are committed to taking a thoughtful and responsible approach to entering the AAM market with a product that meets the high level of safety and reliability in today's air transportation system. The future of mobility starts with people. We believe in creative thinking and collaboration to help build a better mobility experience for everyone, improving people's ability to move - whether for work or play. Join our dynamic team as we strive to be a part of something greater where potential powers tomorrow! Supernal provides an inviting open-space workplace designed to foster collaboration, which aligns with one of our core values. This position is required to work on-site 5 days a week. The Principal Cost Engineer will play a key role in developing, analyzing, and maintaining cost models for the design, development, and production of our aircraft. This position bridges the gap between engineering, supply chain, and finance providing actionable insights that drive strategic decision-making, cost optimization, and program profitability.

Requirements

B.S. in a relevant field is required
Minimum of fifteen (15) years of relevant experience (an equivalent combination of education and experience may be considered)
Experience with life-cycle costing and parametric estimation techniques for aerospace applications
Demonstrable project planning and leadership skills
Strong understanding of manufacturing processes (machining, composites, electrical systems, assembly)
Proficiency with cost modeling software, ERP systems, and Microsoft Excel (advanced).
Excellent verbal and written communication skills
Proactive communication and follow-up
Excellent organizational skills and attention to detail
Ability to independently prioritize and accomplish work within time constraints
Self-motivated and forward-thinking personality

Responsibilities

Develop and maintain detailed cost models for components, systems, and assemblies throughout the aircraft lifecycle
Partner with engineering teams to evaluate design-to-cost targets and identify opportunities for cost reduction without compromising performance or safety
Support make-vs-buy analyses, supplier quotations, and should-cost modeling for mechanical, electrical, and composite systems
Collaborate with procurement and manufacturing to develop cost baselines, track variances, and ensure alignment with program budgets and milestones
Conduct cost-benefit and return-on-investment (ROI) analyses for design changes, production methods, and tooling strategies
Develop and maintain cost estimation tools and templates that scale with company growth
Prepare cost reports, dashboards, and presentations for leadership and program management reviews
Contribute to long-term cost forecasting and financial planning for production ramp-up scenarios
Provide technical mentorship to junior engineers
Other duties as assigned