Sr. Mechanical Engineer

Littelfuse is one of America’s Best Mid-Sized Companies (Forbes) and has been named one of the Best Places to Work in Illinois (Best Companies Group) for 11 consecutive years. With its global headquarters in Chicago, Illinois, USA, Littelfuse is a leading, global manufacturer of electronic components serving more than 100,000 end customers across industrial, transportation, and electronics end markets. We have more than 17,000 employees with operations in 15 countries. From semiconductors to sensors… switches to fuses and more… we produce billions of electronic components that help our customers empower a sustainable, connected, and safer world. In 2021, Littelfuse had net sales of $2.1 billion.

As a Senior Mechanical Engineer, you will be responsible for the mechanical packaging design, development and qualification of new solid-state components and systems. The candidate must be self-motivated and comfortable navigating uncertainties and customer driven design requirements. The role requires an understanding of the protection legacy that Littelfuse has established and the ability to collaborate across the business to draw upon that strength. Join the team at Littelfuse that is developing new, self-contained smart components and systems that deliver protection and control functionality to electrical systems.

• Develop and qualify mechanical package designs for solid-state control and protection components and systems. Establish design details, including stress and tolerance analysis, 3D models and drawings.
• Collaborate with peers in evaluating technical feasibility and selecting suitable suppliers for components and processes.
• Develop DFMEA for safety critical components and systems.
• Engage with contract manufacturers or in house manufacturing to implement design, prepare design documentation, and evaluate production processes to assure components meet performance, reliability and cost targets.
• Define multi-physics simulations (thermal, electrical, mechanical, …) and interpret results, to anticipate lifetime performance.
• Support occasional travel as required to evaluate suppliers and support production ramp up.
• Develop and execute protection system component and system qualification and reliability test plans.
• Provide regular project updates as part of the overall project planning and execution.
• Other duties as assigned.

• MS in Mechanical Engineering or BS in Mechanical Engineering with equivalent experience.
• 7+ years of hands-on experience designing complex electromechanical assemblies with a focus on thermal management, and design for manufacturing.
• Working knowledge of plastics, material properties, process and tooling considerations.
• Experience with rapid prototyping processes (3D printing, CNC machining, laser cutting).
• Experience with thermal simulation tools
• Knowledge of product compliance process, including testing and designing for EMC and product safety approvals.
• Demonstrate an entrepreneurial spirit, willingness to experiment and be able to manage ambiguity.

We are an equal-opportunity employer that takes pride in giving every associate the means and courage to make a difference—everywhere, every day.

We offer competitive salary, bonuses, flexible working hours, remote work options, and development opportunities, including internal Lean Six Sigma Certification.

Littelfuse is an equal opportunity employer committed to empowering every associate to make a difference — everywhere, every day.

We offer a comprehensive benefits package, including:

• Medical, dental, and vision coverage
• 401(k) with company match and annual contribution
• Paid time off and 11 holidays
• Flexible and remote work options
• $850 Lifestyle Spending Account
• Tuition reimbursement (up to $20,000)
• Lean Six Sigma certification and career development opportunities
• Life, disability, and voluntary insurance options

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Salary Range:

The salary offered will vary depending on your location, job-related skills, knowledge, and experience.