Senior Mechanical Engineer

ON.energy

$100K — $130K *
Energy & Utilities
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Mechanical Engineering or similar field.
  • 10+ years of experience in structural and mechanical engineering in project-based or industrial settings.
  • Proficient in stress analysis, fatigue analysis, and vibration assessment.
  • Experience with structural safety and compliance with engineering standards and codes.
  • Ability to interpret engineering drawings and create detailed documentation.
  • Strong project management and communication skills across various teams.
  • Willingness to travel up to 20% for product inspections and site commissioning.

Responsibilities

  • Perform structural stress and fatigue analysis for mechanical assemblies and infrastructure.
  • Lead and review finite element analysis (FEA) models or reports to validate mechanical designs.
  • Ensure mechanical and structural safety under varying operational and environmental conditions.
  • Evaluate failure modes and recommend design improvements for enhanced performance.
  • Collaborate with BESS, Power Electronics, and Controls teams for integrated system performance.
  • Support development and review of mechanical documentation and specifications.
  • Participate in product design sprints and provide technical input during design iterations.

Benefits

  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Paid time off and company holidays
  • Professional development and growth opportunities
  • Opportunity to work with a mission-driven team in clean energy.
Full Job Description
Senior Structural Mechanical Engineer - Energy Infrastructure Projects
Role Overview

We are seeking a Senior Structural Mechanical Engineer with strong experience in structural analysis and mechanical system validation to support the design activities for the products deployed for our energy infrastructure and mission-critical projects.

This is a product-focused role-we need someone who can speak fluently about ensuring the structural integrity, mechanical reliability, and safety of equipment and supporting structures under static and dynamic operating conditions, ideally has experience with mission-critical applications, and can interface with project, commissioning, and O&M engineering teams.
What You'll Do
  • Perform structural stress and fatigue analysis for mechanical assemblies, enclosures, and supporting infrastructure used in ON.energy's product offering.
  • Lead and/or review Finite Element Analysis (FEA) models or reports to validate mechanical designs under static, dynamic, thermal, and seismic loading conditions.
  • Ensure mechanical and structural safety under operational loads, transportation loads, vibration, and environmental conditions.
  • Evaluate failure modes and recommend design improvements to enhance durability, reliability, and lifecycle performance.
  • Collaborate across teams including BESS, Power Electronics, and Controls to ensure integrated system performance.
  • Support development and review of mechanical documentation including calculations, reports, specifications, and as-built drawings.
  • Participate in product design sprints with the development team.
  • Provide technical input during product design iterations based on lessons learned from project engineering design, installation, commissioning, and operations.
Required Qualifications
  • Education: Bachelor's degree in Mechanical Engineering or a similar technical field.
  • Experience: 10+ years of hands-on structural and mechanical engineering experience in project-based or industrial settings.
  • Technical Expertise: Strong experience performing stress analysis, fatigue analysis, and vibration assessment.
  • Compliance: Demonstrated experience ensuring structural safety and compliance with applicable engineering standards and codes.
  • Documentation: Ability to interpret engineering drawings and develop detailed reports and calculations.
  • Soft Skills: Project management skills alongside excellent communication skills across technical and non-technical teams.
  • Travel: Willing to travel up to 20% for product FAT inspection and site commissioning witnessing.
Preferred Plus
  • Experience designing heating, ventilation, and air-conditioning (HVAC) systems.
  • Understanding of thermodynamics and fluid flow analysis related to cooling systems.


For US-based roles - What you'll get:
  • Competitive salary + annual performance-based bonus eligibility
  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Paid time off and company holidays

For Mexico-based roles - What you'll get:
  • Competitive salary + annual performance bonus eligibility
  • Christmas Bonus (Aguinaldo): 30 days
  • Major medical expenses and life insurance
  • Paid time off and holidays (per local policy)

For all roles:
  • Professional development and growth opportunities
  • Opportunity to grow with a mission-driven team shaping the future of clean energy
  • Benefits vary by role and location and are subject to change.

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