Senior Mechanical Design Engineer

Intramotev; St. Louis (MO); On-site; USD 90,000 - 130,000; Full time

Job summary

Intramotev, based in St. Louis, MO, is hiring a Senior Mechanical Design Engineer to own detailed design for vehicle integration hardware and enclosure systems on our self-propelled battery-electric railcar platform.

The role involves concept-to-production work, with occasional travel for testing and integration. You will work within a small team of engineers, applying GD&T, DFMA, and thermal/EMI considerations to deliver robust, manufacturable solutions for vehicle integration and electronics

Qualifications

• Bachelor's degree in mechanical engineering or related field.
• 5+ years hands-on mechanical design experience.
• Experience with enclosure design, thermal management, and EMI considerations.

Responsibilities

• Own detailed mechanical design for vehicle integration hardware and enclosures.
• Perform and review structural and thermal analyses to validate designs.
• Develop manufacturable designs with GD&T and DFMA in mind.
• Collaborate with manufacturing and suppliers to optimize cost and buildability.
• Create test plans and support validation activities to meet requirements.

Skills

Mechanical design

Structural analysis

Thermal analysis

DFM/DFXA

GD&T

Enclosure design

EMI considerations

Education

Bachelor's degree in Mechanical Engineering

Tools

CAD (SolidWorks/Creo)

Job description

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/transportation.

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/transportation.

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 Mechanical Design Engineer to own detailed mechanical design across two adjacent domains: vehicle integration hardware — mounting, bracket, and interface hardware for integrating components onto our self-propelled battery-electric railcar platform — and enclosure design for the electrical and electronic systems that support it, covering thermal management, ingress protection, EMI considerations, mounting and access. This role does not own primary vehicle structure or chassis design, and it does not cover drivetrain-specific mounting or integration hardware, which are owned elsewhere; instead, you'll provide general integration support across subsystems, occasionally touching drivetrain-adjacent interfaces without owning drivetrain design.

You’ll flex between the two domains as project load shifts, taking designs from concept through documentation and into production/build under the technical and people direction of the Mechanical Engineering Team Lead. We consider candidates across a broad experience range — from five years of hands‑on ownership to well over a decade of senior technical leadership — so long as you can own detailed design through production. This is a full‑time, 100% in‑office role based in St. Louis, MO. You’ll work within a team of 3–10 engineers and engage in occasional domestic travel for testing, integration, demonstrations, and customer interactions.

Key Responsibilities

• Design & Integration: Own detailed design of vehicle integration hardware — mounting, bracket, and interface hardware for integrating components onto the rail vehicle platform — and enclosures for electrical/electronic systems, from concept through documentation and into production. Does not include primary vehicle structure/chassis design or drivetrain-specific integration hardware.
• Analysis & Validation: Perform and review structural and thermal analyses to validate integration hardware and enclosure designs for performance, durability, and safety.
• Enclosure Engineering: Design enclosures that address thermal management, ingress protection, EMI shielding, and serviceable mounting and access for housed electrical/electronic components.
• Design for Manufacturing: Apply GD&T and DFM/DFA practice, partnering with manufacturing and suppliers to optimize designs for cost, quality, and buildability.
• Testing & Validation: Develop test plans and support validation and verification activities to confirm designs meet operational and functional requirements.