Overview

The Mechanical Engineer II independently leads mechanical analysis and design activities for lithium-ion battery modules and packs used in commercial, industrial, and automotive applications. This role owns complex mechanical engineering workstreams, develops and reviews structural and thermal solutions, and translates analysis results into design recommendations. The engineer works across engineering, manufacturing, quality, test, and supplier teams to resolve technical issues and deliver robust products that meet performance, cost, quality, manufacturability, reliability, and safety requirements.

Responsibilities

• Lead mechanical design and analysis activities for battery modules and packs from concept through production.
• Develop and review 3D CAD models, engineering drawings, layouts, bills of material, and mechanical specifications.
• Own complex structural calculations, tolerance studies, and mechanical engineering analyses.
• Lead FEA and simulation activities for structural, thermal, vibration, shock, and related mechanical performance requirements.
• Translate simulation and analysis results into design recommendations, tradeoffs, and product improvements.
• Develop and resolve mechanical interfaces between cells, modules, pack structures, cooling systems, electrical assemblies, and enclosures.
• Lead mechanical prototype builds, design verification, validation testing, and simulation-to-test correlation.
• Lead mechanical root-cause investigations and develop corrective actions for test, manufacturing, supplier, and field issues.
• Apply GD&T, tolerance analysis, and design-for-manufacturing and assembly principles to product designs.
• Lead mechanical engineering changes through review, validation, and release processes.
• Provide technical support for supplier component development, qualification, and resolution of mechanical issues.
• Present mechanical analyses, technical risks, design decisions, and recommendations during design reviews.
• Drive improvements in product performance, cost, quality, reliability, serviceability, and manufacturability.
• Develop and improve engineering methods, analysis standards, and reusable technical tools.
• Mentor Mechanical Engineer I team members and provide technical guidance on mechanical engineering activities.

Qualifications

• Bachelor’s degree in Mechanical Engineering or a related engineering discipline.
• 3–7 years of relevant mechanical engineering or product development experience.
• Experience developing complex mechanical or electro-mechanical products from concept through production.
• Strong understanding of structural mechanics, materials, thermal behavior, and mechanical design principles.
• Experience with FEA, engineering calculations, simulation, and correlation to test data.
• Experience with CAD, engineering drawings, GD&T, tolerance analysis, and engineering documentation.
• Experience with validation testing, root-cause analysis, and technical problem resolution.
• Strong analytical, problem-solving, and technical communication skills.
• Ability to independently lead complex mechanical engineering activities and make sound technical decisions.

Preferred Qualifications

• Experience with battery packs, electric vehicles, energy storage systems, or other complex electro-mechanical products.
• Experience with high-voltage battery pack mechanical, thermal, structural, and safety requirements.
• Proficiency with SolidWorks, Abaqus, ANSYS, MATLAB, Python, or similar tools.
• Experience with vibration, shock, thermal, fatigue, or durability analysis.
• Experience with design for manufacturing and assembly and serviceability.
• Experience working with suppliers on mechanical component development and qualification.
• Familiarity with automotive, industrial, or commercial product development standards.
• Experience leading cross-functional technical workstreams.
• Experience developing engineering methods, analysis standards, or automation tools.

Core Competencies

• Mechanical design and analysis
• Structural and thermal simulation
• Engineering judgment
• Technical problem solving
• Root-cause analysis
• Simulation-to-test correlation
• GD&T and tolerance analysis
• Design for manufacturing and assembly
• Product quality and reliability
• Technical communication
• Cross-functional leadership
• Continuous improvement
• Mentoring and knowledge sharing

Disclaimer: This job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice

East Penn Benefits

Navitas/East Penn offers excellent benefits:

• Competitive compensation
• Group health insurance that includes high quality medical, dental, vision and prescription coverage with a low employee premium
• Retirement Savings Plan with company match and a 3% employer contribution
• Paid company holidays and Paid Time Off (PTO)
• Employee assistance program
• Fitness Discounts
• Promotional opportunities