Mechanical Engineer II — Battery Modules & Thermal Design

careersnavitas-eastpennmanufacturing; Ann Arbor (MI); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Competitive compensation

Group health insurance

Retirement Savings Plan with company?

Paid company holidays and PTO

Employee assistance program

Job summary

Navitas Systems LLC, a leader in energy storage, is seeking a Mechanical Engineer II to lead mechanical analysis and design for lithium-ion battery modules and packs used in commercial, industrial, and automotive applications.

The engineer will own complex workstreams, develop 3D CAD models, perform FEA and thermal analyses, and translate results into design decisions while collaborating with manufacturing, QA, test and supplier teams to ensure performance, cost, manufacturability, reliability

Qualifications

• Bachelor’s degree in Mechanical Engineering or related discipline.
• 3–7 years of relevant mechanical engineering or product development experience.
• Experience with 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.

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.

Skills

Mechanical design

FEA

CAD

GD&T

Thermal analysis

Root-cause analysis

Cross-functional leadership

Technical communication

Education

Bachelor’s degree in Mechanical Engineering

Tools

SolidWorks

Abaqus

ANYSYS

MATLAB

Python

Job description

Navitas Systems LLC, a leader in energy storage, is seeking a Mechanical Engineer II to lead mechanical analysis and design for lithium-ion battery modules and packs used in commercial, industrial, and automotive applications.

The engineer will own complex workstreams, develop 3D CAD models, perform FEA and thermal analyses, and translate results into design decisions while collaborating with manufacturing, QA, test and supplier teams to ensure performance, cost, manufacturability, reliability