NextGenEnergyJobsModern Power System Jobs

Mechanical Systems Engineer / Senior Mechanical Systems Engineer

1st Avenue Power

Mountain View, CA

Full Time

Posted November 13, 2026

$140k - $205k

Power Generation

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Listing evidence and provenance

Source: Greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed November 15, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Power Generation
Pay provenance: Employer-provided pay

Job Description

[1: Additionally, 1st Avenue is in the business of acquiring projects where there has been a final notice-to-proceed or financial close.]

Key Responsibilities

Real ownership. You will be the lead for mechanical system integration, not one piece of a large team.
Visible impact. The systems you design will be deployed in the field supporting clean energy.
Breadth. Enclosures, thermal, busbars, structure, serviceability, and manufacturing all run through you.
Build the foundation. You will help define our field service strategy, design standards, and documentation as we move toward volume production.
Lead detailed design. Turn system architecture and layout intent into complete component and assembly designs.
Own system integration. Manage mechanical and electrical interfaces, packaging, clearances, serviceability, and fit across power electronics, enclosures, racks, thermal management, interconnects, and structure.
Keep the system view. Track how component choices affect cost, weight, thermal performance, manufacturability, and field integration, and flag conflicts between subsystems early.
Drive tradeoff decisions. Evaluate options for enclosures, thermal management, busbars, harnessing, structural supports, and environmental sealing, and make data based recommendations.
Partner with suppliers. Define mechanical, electrical, and thermal interfaces, materials, and surface treatments early, and bring supplier capabilities back into the design.
Design for volume. Reduce part count, difficult processes, and manual steps. Perform tolerance analysis, write assembly instructions, and design tooling, jigs, and fixtures for mass production.
Build the field replaceable unit (FRU) strategy. Partition the system into serviceable modules with clear interfaces. Set requirements for connectors, mounting, captive hardware, access, and lifting so units can be swapped safely with standard tools and minimal downtime. Document replacement procedures, including torque specs, installation sequence, and lockout and de-energization steps.
Document the design. Maintain CAD, drawings, interface control documents, BOMs, assembly and service procedures, and the requirements traceability behind design choices.
Prove it out. Support design reviews, prototyping, and system integration and serviceability testing as the design matures.

Requirements

B.S. or M.S. in Mechanical Engineering, or equivalent.
5+ years of experience in electronics packaging mechanical design or mechanical and electrical systems integration.
2+ years of SolidWorks experience, with the ability to produce detailed engineering drawings.
Experience designing thermal management solutions using forced air and liquid cooling.
Strong command of design for manufacturing (DFM) across sheet metal, weldments, injection molding, extrusions, and machining, plus tolerance stack up, stress analysis, and assembly sequence optimization.
A track record of comparing components against requirements, assessing tradeoffs, and integrating them into large mechanical assemblies.
Clear written and verbal communication, and comfort working directly with suppliers and cross functional teams.
Experience designing deployed equipment for field serviceability and FRU replacement, including connectors, service access, handling, and standardized maintenance procedures.
Experience integrating multi subsystem hardware across mechanical, electrical, and thermal domains.
Design for assembly (DFA) experience with exposure to production ramp and volume manufacturing.
Power electronics, battery, or electrical system packaging experience (enclosures, brackets, busbars, heatsinks, cold plates), including dielectric, clearance, and creepage requirements.
Experience with PLM systems such as Teamcenter, SolidWorks PDM, or Propel.
Familiarity with UL and IEC standards and certification for power and energy storage equipment.
Experience working with international suppliers.
You enjoy a fast paced startup where priorities shift and you get to shape how things are

Benefits & Perks

Competitive Compensation Package
Health Insurance: We offer 100% coverage of employee and 75% of dependent premiums under a Gold-level PPO plan. Dental & Vision Insurance: 50% of employee premiums are covered.
Retirement Plan: A 401(k) plan with a 6% employer match.