Senior Electrical Engineer (High-Voltage & Propulsion)

About Us

At Intramotev, we are dedicated to revolutionizing the freight industry by liberating tons of freight from congested highways, reducing carbon emissions, and enhancing transportation efficiency. We are deploying self-propelled battery-electric railcars and vehicles to transform freight logistics and bring innovation to our rail network. Based in St. Louis, MO, we are committed to promoting industrial revitalization, saving lives, and minimizing the environmental impact of trucking.

We actively foster a work environment for every teammate that's welcoming, respectful and inclusive, with great opportunities for professional growth. Find your future with us.

Role Overview

We are seeking a Senior Electrical Engineer (High-Voltage & Propulsion) to own the high-voltage (HV) energy and propulsion electrical systems on our self-propelled battery-electric railcars and vehicles. The scope covers traction battery packs and battery management systems (BMS), HV distribution and charging, traction inverters, and motors, along with the HV safety practice and electromagnetic compatibility and interference (EMC/EMI) mitigation that high-power drivetrains demand. We are an integrator. We specify, qualify, and integrate supplied packs, BMS, inverters, and motors rather than designing them in house. The requirements, integration, qualification, and safety are still yours to own, from concept through production and into the field. This is a senior individual-contributor role: you are the technical owner of these systems and may mentor junior engineers. We level by experience, so a stronger candidate will be leveled to match.

This is a full-time, in-office role based in St. Louis, MO. You'll work within a team of 3–10 engineers, alongside the rest of the electrical team and the software, mechanical, systems, and test engineers, and engage in occasional domestic travel for testing, integration, supplier visits, demonstrations, and customer interactions.

Key Responsibilities

• Design & Architecture: Own the vehicle's HV and propulsion electrical architecture, covering energy storage, distribution, charging, traction inverters, and motors. Make the performance, cost, and safety trade-offs across it.
• HV Energy Storage: Define requirements for traction battery packs and BMS, then drive supplier selection, qualification, and integration. This covers isolation monitoring, contactor control, pre-charge, and the thermal, state-of-charge (SOC), and state-of-health (SOH) interfaces.
• HV Distribution & Charging: Own HV junction and distribution, fusing and protection, HV interlock, and the vehicle's charging interfaces and charger integration.
• Propulsion Integration: Select, integrate, commission, and tune traction inverters and motors with suppliers. Define the motor-control interfaces to vehicle controls.
• HV Safety: Set isolation, grounding, and bonding practice on the vehicle. Establish HV safety procedures and lockout/tagout for test and shop work, and drive EMC/EMI mitigation on the drivetrain.
• Testing & Validation: Plan and run bench, vehicle-level, and field testing of HV and propulsion systems. Analyze the data and lead root cause on field issues through to closure.
• Interfaces & Collaboration: Integrate packs, BMS, inverters, and chargers into vehicle controls over CAN, and keep the hardware/software interfaces clean with the software team. Work daily with mechanical, systems, test, and supplier engineers.
• Mentoring: Mentor junior engineers in HV integration, test practice, and safe work on energized systems.

Compensation & Benefits

Base salary: $120,000 – $140,000

Intramotev offers a comprehensive benefits package for all team members, including:

• Medical coverage: We cover 100% of employee medical premiums, plus low-cost dental and vision options.
• Vacation: Full-time employees enjoy unlimited paid time off.
• Equity: Full-time employees receive equity in the company.
• Parental leave: New parents receive paid time off to spend quality time with their family.

About You: Basic Qualifications (Required Skills/Experience)

• At least a Bachelor's Degree in Electrical Engineering or a related technical field.
• 5+ years of electrical engineering experience on vehicles or complex industrial equipment, including taking HV or propulsion hardware from concept through validation and into production or field deployment.
• Hands-on experience integrating HV traction battery systems and BMS, including isolation monitoring, contactors, and pre-charge, plus HV safety practice: isolation, grounding, and safe work on energized HV systems.
• Hands-on experience with traction inverters and electric motors, through integration, commissioning, or test.
• Willingness to expand into technical areas beyond your area of expertise; ability to develop innovative and novel approaches to underspecified problems.
• Open-minded and comfortable working in a teaming environment as an individual contributor.
• Fluent in both written and verbal English.
• U.S. Person (immigration or work visa sponsorship will not be provided).

Preferred Qualifications (Desired Skills/Experience)

Candidate should have a working knowledge of one or (ideally) multiple areas listed below:

• Experience in directly applicable industry, such as Rail, Electric Vehicles, Automotive, Heavy Machinery, Mining, or Aerospace.
• Specifying and qualifying supplied HV hardware: requirements definition, supplier selection, and qualification and DV/PV testing.
• Battery pack or BMS design, or power-electronics and inverter design. We integrate these systems rather than design them, so this depth is a bonus rather than a daily duty.
• Motor control fundamentals, such as field-oriented control, torque and speed control, and motor characterization on a dynamometer.
• DC fast charging or high-power charger integration.
• Vehicle network integration (CAN, J1939) and data analysis tooling such as MATLAB/Simulink, Python, or CAN logging tools.
• EMC/EMI design and mitigation on high-power drivetrains.
• Functional-safety (ISO 26262 / IEC 61508) or rail-industry standards practice.

Typical Education and Experience

Education/experience typically acquired through advanced technical education (e.g. Bachelor and/or Master) and typically 5 or more years' related work experience, or an equivalent combination of technical education and experience.

Relocation

This position offers a competitive relocation package for qualified candidates.

Equal Opportunity Employer

Intramotev is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.

If you're passionate about electrical engineering and eager to lead the charge in autonomous rail technology, we'd love to hear from you!