Full-Time

Power Electronics Engineer

Harbinger Motors

Harbinger Motors

201-500 employees

Electric commercial vehicles with driver-centric design

Compensation Overview

$160k - $220k/yr

+ Stock Options

Westminster, CA, USA

In Person

Category
Electrical Engineering (2)
,
Required Skills
Printed Circuit Board (PCB) Design
Altium
LTSpice
FEM/FEA
Requirements
  • High-Power Experience: proven track record designing, building, and testing high-power electronics projects; experience in the hundreds of kilowatts range is required, Megawatt scale experience is highly desirable
  • Industry Flexible: 10+ years of hands-on electrical engineering experience with backgrounds in automotive, robotics, aerospace, grid-scale energy storage, marine, rail, or renewables, as long as you have worked at demanding power levels (100kW+)
  • Deep Technical Expertise: strong background in analog/digital electronics, power conversion, and energy storage technology including power electronics, control theory, motor drives, and battery systems
  • Design & Test Mastery: comfortable at a CAD workstation and in a high-voltage laboratory; strong hands-on capabilities for testing and troubleshooting complex electrical components and systems
  • Education: Bachelor of Science, Master of Science, or Doctor of Philosophy in Electrical Engineering, Applied Physics, or closely related fields with a focus on high voltage systems
  • Mixed Signal & Tools: extensive experience with electrical design of mixed-signal printed circuit boards for traction inverters or on-board chargers; highly proficient with Altium Designer or similar schematic/layout tools and circuit simulation software such as LTspice
  • EMI/EMC Expertise: proven experience troubleshooting EMI/EMC related issues
  • System Integration: familiarity with software, digital communication specifications, and embedded firmware development is a strong plus
  • Mechanical Familiarity: CATIA experience to support design releases is a strong plus
  • Leadership: exceptional problem-solving skills with ability to communicate, mentor junior engineers, and collaborate dynamically in a fast-paced team environment
Responsibilities
  • Architect and Lead: Drive the architecture, component selection, analysis, and design of high-power (100kW to MW class) power electronics aimed at high performance and cost optimization, including on-board chargers, DC-DC converters, and traction inverters
  • End-to-End Testing: Lead the testing and bring-up of power electronics components, seamlessly integrating them with powertrain components and the broader charging ecosystem
  • Advanced PCB Design: Oversee and execute the design of complex circuit boards (PCBs), optimizing for low-cost, high-reliability, and high-performance based on IPC standards
  • Reliability & Analysis: Lead DFMEA, worst-case circuit analysis (WCCA), thermal analysis, and other critical system-level evaluations
  • Validation Leadership: Direct testing and validation efforts on high voltage components and systems, setting the standard for test protocols within the team
  • Hands-on Bring-Up: Architect test bench setups and provide hands-on support for board-level, component-level, and vehicle-level bring-up at in-house facilities and external test sites
  • Cross-Functional Troubleshooting: Collaborate with and mentor cross-functional teams to troubleshoot, diagnose, and resolve complex electrical and EMI issues as they arise
  • Strategic Sourcing: Engage strategically with suppliers and the sourcing team to identify, evaluate, and procure cutting-edge components; support design releases and modifications based on vendor capabilities
  • Technical Communication: Generate comprehensive technical reports and present critical design reviews to executive leadership and key stakeholders
Desired Qualifications
  • Megawatt scale experience is highly desirable
  • CATIA experience to support design releases is a strong plus
  • System integration familiarity with software and embedded firmware development is a strong plus
  • Embedded firmware development experience is a strong plus

Harbinger Motors designs, builds, and sells electric commercial vehicles. Its products use a unique chassis architecture and drive-by-wire steering to create vehicles that enhance driver comfort, safety, and productivity. The company emphasizes ergonomics, such as a floor height below 28 inches, and prepares its vehicles to be autonomous-ready, enabling potential autonomous operation in the future. Revenue comes from vehicle sales and related services like customer support and maintenance, with a data-driven approach that uses tracking tools to understand customer needs and improve products. Harbinger Motors differentiates itself from competitors by prioritizing the driver experience and operational productivity through its ergonomic design, driver-focused features, autonomous-readiness, and data-informed improvements. The company's goal is to transform the commercial vehicle industry by delivering practical, user-friendly EVs that boost safety and efficiency for businesses.

Company Size

201-500

Company Stage

Series C

Total Funding

$357.7M

Headquarters

Gardena, California

Founded

2021

Simplify Jobs

Simplify's Take

What believers are saying

  • Frazer investment funds hybrid EMS platforms amid 2030 mobile healthcare tripling.
  • Social selling closes $1.25M deals with 400% ROI in electrified states.
  • ZF licensing deal creates software revenue from Phantom AI computer vision.

What critics are saying

  • NHTSA recalls LG batteries in 138,000 EVs trigger Harbinger California probe.
  • Phantom AI ADAS fails medium-duty tests, halting 2026 Fortune 500 integrations.
  • Frazer partnership collapses from hybrid range extender failures in EMS cycles.

What makes Harbinger Motors unique

  • Proprietary chassis achieves 99.5% parts commonality across configurations.
  • Modular platform powers RVs, FedEx vans, and Frazer ambulances.
  • Phantom AI acquisition enables Level 2 ADAS for medium-duty fleets.

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People at Harbinger Motors who can refer or advise you

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Stock Options

Unlimited Paid Time Off

Paid Vacation

Meal Benefits

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

1%

2 year growth

7%
ModumUp
Apr 30th, 2026
Case studies: how Harbinger closed $1.25M in deals with Social Selling.

Case studies: how Harbinger closed $1.25M in deals with Social Selling. Modumup is excited to share one of its recent Social Selling case studies: $1.25M in closed deals, 400%+ ROI, 215 leads, and 3,977 target contacts. These results stem from 7 months of ongoing LinkedIn Social Selling for Harbinger, a US-based startup focused on building commercial electric vehicles. Harbinger, founded in 2021, launched production in 2024 and faced the challenge of scaling its sales to fleet operators, a market accustomed to diesel vehicles for the past 30 years. Dmitry Suvorov, Senior Marketing Manager at Harbinger, joined as the company's first marketer and kickstarted the Social Selling project with ModumUp. The project targets two segments across the US and Canadian markets: fleet operators in government, utilities, food and beverage, retail, and leasing and rental companies. The goal was to engage VP-level decision-makers, fleet directors, operations leaders, and mid-level fleet managers. Modumup manage the LinkedIn profiles of several Harbinger representatives to build a strong digital presence. A core element of Social Selling is content. The most successful posts were personal, featuring team members sharing why they left the diesel industry to join an EV startup, real photos from customer visits and field events, and honest perspectives on the commercial EV market. Over the first seven months, 22 posts went viral, achieving a view rate above 100%. The top-performing posts reached 55,000+ views and 350+ reactions. One post was even selected by an industry LinkedIn Newsletter as one of the most relevant pieces in the segment without any outreach or promotion from its side. Dmitry shared his thoughts: "By the time you reach out through your profile, the prospect already knows who you are and what you build. Cold email can't do that." Another key aspect of Social Selling is lead generation. Modumup engaged with decision-makers at fleet-operating companies. The highest response rates came from US states with active fleet electrification funding, where prospects were already familiar with Harbinger's content in their feed. As a result, outreach didn't feel cold. For prospects not yet at a decision stage, the goal was to set up demo deployments where Harbinger delivered vehicles to a fleet depot for up to a month of hands-on trial. This level of commitment requires trust, and LinkedIn helps build it. After 7 months, the results were impressive: - 3,977 target contacts attracted to managed profiles - 22 viral posts, with top posts reaching 55,000+ views and 350+ reactions - 158 Marketing Qualified Leads (MQLs): shared contacts, requested presentations - 57 Sales Qualified Leads (SQLs): scheduled calls and meetings, with multiple vehicle demo deployments ongoing - 2 enterprise deals closed, totaling $1.25M, yielding a 400%+ ROI on the Social Selling campaign Additionally, there is an ongoing opportunity valued at over $1M. 04-30-2026

The Real Preneur
Mar 28th, 2026
Harbinger's flexible EV platform powers Frazer's hybrid ambulances.

Harbinger's flexible EV platform powers Frazer's hybrid ambulances. Harbinger, a young trucking startup, gains another client through its versatile electric vehicle platform. This time, the company partners with Frazer, a 70-year-old firm in emergency vehicles. The collaboration highlights Harbinger's adaptability across industries. On Wednesday, both companies announced the deal. Frazer will construct ambulances using Harbinger's hybrid platform. Additionally, Frazer plans to build larger mobile healthcare vehicles. Moreover, Frazer joins Harbinger's new energy storage business. Harbinger launched this venture earlier this year with Airstream. This partnership succeeds despite challenges in the U.S. passenger vehicle market. Electric and hybrid vehicles thrive in commercial sectors. For instance, Grounded, a Detroit-based startup, recently collaborated with Colgate. They developed a small fleet of mobile dental care vehicles. The power of Harbinger's modular chassis. Harbinger's success stems from its flexible platform. John Harris, co-founder and CEO, explained this in an exclusive TechCrunch interview. The basic truck chassis adjusts easily. Customers can shorten or lengthen it as needed. Harbinger also adds a range-extending combustion engine if required. Despite its young age, Harbinger powers diverse vehicles with one platform. It supports RVs built with THOR Industries. It drives FedEx delivery vans. It enables smaller box trucks. Now, it equips ambulances. This versatility helped Harbinger raise over $300 million. Harris emphasized the platform's efficiency. It offers three wheelbases for step vans and RVs. It provides four gross vehicle weight ratings. Customers choose from four powertrain options. These include four, five, or six battery packs. The hybrid option works across all. Remarkably, 99.5% of parts remain common. This commonality revolutionizes production. Frazer's strategic shift to hybrids. Frazer's CEO, Laura Griffin, praised the hybrid powertrain. It relies mostly on electricity but uses a gas engine to recharge batteries. This setup reduces total ownership costs. It also boosts vehicle uptime for users. Griffin focuses on innovations that improve user experiences. Her customers include municipalities, 911 services, and hospitals. The platform compares favorably to other medium-duty chassis. It meets all their requirements seamlessly. Frazer will purchase Harbinger's battery-based auxiliary power units. They will install these on new hybrid emergency vehicles. They will also retrofit older combustion models. These units replace traditional generators. First responders gain reliable power for medical devices. Importantly, this power comes without draining the vehicle's main battery or engine. Griffin noted the growing demand for powered equipment in ambulances. New devices require substantial electricity. Harbinger's solution provides abundant, clean energy. It operates independently of the chassis powertrain. Energy storage: A standalone opportunity. Harris views the energy storage business as promising. It grows regardless of hybrid vehicle sales to Frazer. The auxiliary units suit any powertrain type. Thousands of ambulances create a vast market. Harbinger targets other sectors too. California, its home state, imposes strict rules on gas generators. This drives demand for battery alternatives. Harris highlighted user preferences. Operators avoid noisy generators near them for long shifts. Batteries offer savings and lower emissions. Interest surges in eco-friendly options. Broader impact on electric commercial vehicles. This deal underscores a trend. Startups like Harbinger expand electric platforms beyond trucking. They enter emergency services and healthcare. Flexibility proves key to adoption. Challenges persist in passenger EVs. However, commercial applications advance steadily. Harbinger's approach minimizes customization costs. It maximizes scalability across uses. Frazer benefits from reduced downtime. End users enjoy reliable power. Harbinger secures funding and partnerships. The ecosystem evolves toward sustainability. Looking ahead: innovation and growth. Harbinger continues to innovate. Its platform adapts to emerging needs. Partnerships like this one fuel expansion. Frazer elevates its offerings with green tech. The collaboration promises mutual benefits. It addresses real-world demands for clean, efficient vehicles. As restrictions tighten on emissions, such solutions gain traction. In summary, Harbinger's versatile chassis transforms industries. It powers emergency response with hybrid efficiency. This partnership sets a model for future deals. Electric commercial vehicles lead the charge toward a greener future.

PR Newswire
Mar 25th, 2026
Frazer and Harbinger partner on next-generation mobile healthcare products.

Frazer and Harbinger partner on next-generation mobile healthcare products. Mar 25, 2026, 09:00 ET Strategic partnership leverages Harbinger's plug-in hybrid chassis to electrify emergency medical response vehicles and next-generation mobile healthcare delivery units Frazer has made a strategic investment in Harbinger, reinforcing long-term alignment around the future of mobile healthcare GARDEN GROVE, Calif. and HOUSTON, March 25, 2026 /PRNewswire/ - Harbinger, an American automotive and industrial manufacturer, and Frazer, a leader in mobile healthcare solutions, today announced a strategic partnership to advance the future of mobile healthcare. Frazer will leverage Harbinger's plug-in hybrid vehicle chassis and battery technology to electrify emergency medical response vehicles and create next-generation mobile healthcare products. As part of Frazer's long-term alignment and shared commitment to the partnership, the company has also made a strategic financial investment in Harbinger. In return, Harbinger is investing time, engineering expertise, and development resources to support Frazer's expansion into next-generation electrified mobile healthcare platforms. "At Frazer, we believe the future of healthcare should deliver exceptional medical care directly to the patient, rather than simply transport the patient to care," said Laura Griffin, CEO, Frazer. "This partnership with Harbinger demonstrates Frazer's move beyond the traditional ambulance model and into a mobile healthcare solutions provider that supports new care delivery models. Hybrid-electric vehicles offer a practical first step toward electrification in emergency and medical environments, while preserving full operational readiness and clinical reliability." The Frazer and Harbinger collaboration will include multiple next-generation mobile healthcare products: * Hybrid-electric emergency medical services (EMS) platform: An emergency medical response vehicle built on Harbinger's hybrid chassis to support mission-critical reliability, clinical grade power redundancy, and drastically reduced operational complexity. * Hybrid-electric mobile healthcare unit: A mobile healthcare platform built on Harbinger's hybrid chassis to support care delivery outside traditional fixed location facilities, supporting community centered care models, hospital system extensions, and other emerging use cases. * Advanced auxiliary power systems: Next-generation power storage solutions based on Harbinger's advanced battery technology, providing clean, stable, and redundant power for field medical care in both hybrid and internal combustion engine vehicles. Both Harbinger and Frazer are committed to U.S. manufacturing. Harbinger designs and manufactures its electric and hybrid chassis in-house at its California headquarters, including all major vehicle systems such as the powertrain, battery system, steering, brakes, and more. This vertically integrated approach keeps costs low and provides a higher-performing, safer and more durable solution than electric vehicles built upon existing diesel and gasoline platforms. Frazer proudly produces its products in Houston, Texas. "Through this partnership, Harbinger is entering the mobile healthcare and emergency medical response market for the first time," said John Harris, Co-Founder and CEO of Harbinger. "Our proprietary platform was designed from the ground up as a modular foundation to support a wide range of commercial and specialty applications. In mobile healthcare, redundancy, uptime, and operational flexibility are non-negotiable, and our platform is built to deliver the reliability this market requires." Fully electric vehicles have struggled to meet the complexities of emergency medical operations due in part to charging constraints, unpredictable duty cycles, and power redundancy. Hybrid systems offer a practical and immediately deployable solution. Harbinger's hybrid offering leverages its proven electric chassis, and pairs it with a gas-powered range extender that recharges the battery when needed. This architecture enables significantly reduced emissions during extended idling, stable and redundant power delivery for onboard medical equipment, and simplified energy management, without disrupting existing workflows and patient care. Demand for mobile healthcare is accelerating as health systems face capacity constraints, workforce shortages, and rising costs. For this reason, mobile healthcare is a critical complement to hospitals and medical care centers. Today, there are only a few thousand mobile clinics nationwide. That number is expected to triple or more by 2030 as health systems are seeking lower-cost, more scalable healthcare delivery models. This partnership addresses the clear need for purpose-built mobile healthcare platforms that can deliver reliable, lower-emissions operation without compromising mission-critical readiness. Frazer will begin engaging customers, partners, and industry stakeholders on the collaboration at the Fire Department Instructors Conference (FDIC) from April 20-25, 2026. Participants will have the opportunity to check out the Harbinger hybrid-electric chassis at the Frazer booth #5074. For more information or to book an appointment, please visit www.frazerbilt.com or call +1 (888) 372-9371. About Harbinger Harbinger is an American industrial manufacturer of advanced electrification technologies, including all-electric and hybrid medium-duty vehicle platforms, battery and drivetrain systems, and auxiliary power solutions. Harbinger has an industry-leading team of battery, electric vehicle (EV), and drivetrain experts. The company designs and builds proprietary, vertically integrated systems in-house for commercial and specialty applications, such as medium-duty commercial vehicles, work trucks, recreational vehicles (RVs), mobile healthcare units, and power and energy storage. Harbinger's EV chassis delivers electric and hybrid vehicles priced competitively with traditional diesel counterparts, removing a key barrier to adoption. The company has acquired Phantom AI to integrate advanced driver-assistance systems (ADAS) into its commercial vehicles and extend this technology to third-party passenger vehicle applications. Harbinger is on a mission to transform industries long underserved by innovation. Harbinger: Familiar Form. Revolutionary Foundation. To learn more about Harbinger, please visit www.harbingermotors.com. You can find the company newsroom HERE. About Frazer Frazer designs and builds mobile healthcare solutions that equip care teams to deliver clinical-grade capability wherever the mission demands. From its headquarters in Sugar Land, Texas, Frazer partners with EMS agencies, fire departments, hospitals, and specialty care programs to develop purpose-built platforms focused on power resilience, operational readiness, and long-term support. In addition to emergency response vehicles, Frazer develops advanced mobile healthcare platforms, including Mobile Stroke Units and specialty care units, supporting the continued evolution of care delivery in the field. Frazer continues to invest in platform innovation and power architecture that helps customers reduce operational complexity, protect uptime, and expand care access beyond traditional facilities. SOURCE Harbinger

StreetInsider
Mar 25th, 2026
Frazer invests in Harbinger to electrify ambulances and mobile healthcare units

Harbinger, an American automotive manufacturer, has partnered with Frazer, a mobile healthcare solutions provider, to electrify emergency medical response vehicles and develop next-generation mobile healthcare platforms. Frazer has made a strategic investment in Harbinger as part of the collaboration. The partnership will produce emergency medical response vehicles and mobile healthcare platforms built on Harbinger's plug-in hybrid chassis, alongside next-generation battery-powered storage solutions. Harbinger's hybrid system combines its electric chassis with a gas-powered range extender, addressing operational challenges that have hindered fully electric vehicles in emergency medical services. Both companies maintain US manufacturing operations, with Harbinger producing in California and Frazer in Houston, Texas. Demand for mobile healthcare is expected to triple by 2030 as health systems seek lower-cost delivery models. The partnership will be showcased at the Fire Department Instructors Conference in April 2026.

TechCrunch
Mar 25th, 2026
Harbinger's hybrid platform to power Frazer ambulances and mobile healthcare vehicles

Harbinger, a trucking startup, has partnered with 70-year-old emergency vehicle manufacturer Frazer to build hybrid ambulances and mobile healthcare vehicles on its electric platform. Frazer will also purchase battery-based auxiliary power units from Harbinger's new energy storage business. The deal demonstrates success for electric and hybrid commercial vehicles despite passenger EV headwinds in the US. Harbinger's flexible chassis can be adjusted in length and accommodate range-extending combustion engines, already powering RVs, FedEx vans, box trucks and now ambulances with 99.5% part commonality. Co-founder John Harris said the auxiliary power units will work across both hybrid and traditional combustion vehicles, replacing standard generators. The company has raised over $300 million to date and sees strong demand from industries seeking cleaner power alternatives.