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Strategic Sourcing Specialist, Powertrain & Combustion Engines
Garden Grove, CA, USA
Posted on Jul 16, 2026
About Harbinger
Harbinger is an American commercial electric vehicle (EV) company on a mission to transform an industry starving for innovation. Harbinger’s best-in-class team of EV, battery, and drivetrain experts have pooled their deep experience to bring a first-of-its-kind EV platform to support the growing demand for medium-duty EVs and Hybrids. Harbinger: Familiar Form, Revolutionary Foundation.
Role Overview
As the Strategic Sourcing Specialist for Combustion Systems, you will own the end-to-end procurement lifecycle for our combustion, engine, and powertrain components to support Harbinger’s hybrid vehicle platforms. Joining a fast-paced and dynamic Supply Chain team, you will act as a true player-coach—balancing high-level sourcing strategy with the operational, day-to-day administrative details required to build a supply chain from the ground up. Your impact will be immediate, driving cost-efficiency, securing critical supplier partnerships, and ensuring our production timelines are met as we scale our revolutionary medium-duty vehicles.
Key Responsibilities
- Develop and execute both strategic and operational sourcing plans for various systems, managing high-level strategies while handling daily administrative procurement details.
- Source and evaluate global suppliers, building a resilient and scalable supply base tailored to our unique hybrid powertrain requirements.
- Negotiate pricing, contracts, and complex commercial terms to secure optimal value, quality, and delivery schedules.
- Manage ongoing supplier relationships and performance, resolving critical supply chain bottlenecks and driving continuous improvement.
- Drive cross-functional project management efforts, acting as the primary liaison between engineering, manufacturing, and external partners to keep programs on track.
- Design and build customized data trackers, KPIs, and dashboards entirely from scratch to monitor commodity performance and spend.
- Navigate a dynamic, rapidly changing startup environment, bringing structure to chaos and adapting quickly to shifting priorities.
Required Skills & Experience
- 5+ years of experience in strategic sourcing, commodity management, or procurement, ideally within automotive, commercial vehicles, or heavy manufacturing.
- Proficiency in data management and analytics, with expert-level skills in Google Sheets and advanced Excel (ability to build complex tracking models from scratch).
- Strong understanding of supplier management, total cost of ownership (TCO), and end-to-end procurement operations.
- Excellent negotiation, project management, and cross-functional communication skills.
- Bachelor's degree in Supply Chain Management, Engineering, Business Administration, or equivalent practical experience.
Preferred Qualifications
- Experience working specifically with Engines, Electric Drive Units (EDU), or Powertrain systems.
- Familiarity with early-stage, high-growth startup environments and a high tolerance for ambiguity and rapid scaling.
- Proven track record of building supply chain processes and dashboards from 0 to 1.
- Advanced degree or professional certification (e.g., APICS, CPSM, PMP).
Key Benefits & Perks:
- Comprehensive Health, Dental & Vision (HDV) – 100% employee covered
- Early-stage Stock Options
- Robust Retirement Savings (401k, HSA, FSA)
- Generous Paid Time Off (PTO) & Parental Leave
- Annual Vacation Bonus
- Wellness & Fertility Benefits
- Cell Phone Stipend
- Complimentary Meals & Stocked Kitchens
California Pay Range
$150,000—$170,000 USD
Equal Opportunity
Harbinger is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law.
Harbinger is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at info@harbingermotors.com.
Candidate Data Privacy
Harbinger may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Harbinger may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law.
Harbinger may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our HR, legal, and finance teams, and the team(s) with the position(s) for which you are applying; (ii) Harbinger affiliates; and (iii) Harbinger’s service providers, including providers of background checks, staffing services, and cloud services.
Harbinger may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.
Please note that we are currently not accepting applications from third party application services. Any unsolicited resumes or candidate profiles submitted in response to our job posting shall be considered the property of Harbinger and are not subject to payment of referral or placement fees if any such candidate is later hired by Harbinger unless you have a signed written agreement in place with us which covers the applicable job posting.