Sr Principal Mechanical Design Engineer

## Sr Principal Mechanical Design Engineer Apply:
Livermore, CA:
Full time:
Posted Today:
JR101346
** Forming Our Future together
** Form Factor, Inc. (NASDAQ: FORM), is a leading provider of essential test and measurement technologies along the full semiconductor product life cycle — from characterization, modeling, reliability, and design de-bug, to qualification and production test. Semiconductor companies rely upon Form Factor’s products and services to accelerate profitability by optimizing device performance and advancing yield knowledge. The company serves customers through its network of facilities in Asia, Europe, and North America.

Rooted in our core values — Focus on the Customer, Ownership & Accountability, Respectfully & Effectively Communicate, and Motivate & Develop People — we foster an environment where diverse perspectives are not only welcomed but celebrated. Everyone can make an impact here. Whether it's improving products, supporting customers, or positively influencing peers and the community, the contributions of our people matter.
** Shift:
** The regular hours for this position are day shift.
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* Job Description:

** As a
** Sr Principal Mechanical Design Engineer
** within the Product Solutions group, you will serve as a subject matter expert responsible for developing and advancing mechanical designs as we expand our newest pad probing product portfolio across a wide range of customers and challenging semiconductor applications.  Working closely with product development, manufacturing, applications, quality, and customer-facing teams, you will lead complex mechanical design efforts from requirements definition and concept development through prototyping, qualification, product launch, and sustaining support.

You will apply deep mechanical engineering expertise, structured problem-solving, and data-driven decision-making to develop solutions that balance product performance, reliability, manufacturability, cost, and customer requirements.
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* Key Responsibilities:

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* ** Mechanical Design & Product Development
*** Lead the design and refinement of novel tip construction and pad probing products for advanced packaging applications, from requirements definition and concept development through prototyping, qualification, scaling, and sustaining support.
* Serve as a mechanical design subject matter expert, providing technical direction on complex product design, performance, reliability, and manufacturability challenges.
* Develop innovative mechanical solutions for complex or ambiguous applications where established design approaches may not fully address requirements.
* Create and maintain complex 3D CAD models, layouts, detailed engineering drawings, specifications, and bills of materials for manufacturable product designs.
* Apply GD&T, tolerance analysis, design for manufacturability, and mechanical assembly principles to develop robust and repeatable designs.
* Perform engineering analysis, including tolerance studies, fit and function assessments, design reviews, and finite element analysis as appropriate.
** Product Validation & Qualification
*** Define product performance requirements, engineering test plans, and validation strategies to demonstrate readiness for customer applications.
* Support prototype development, laboratory testing, product qualification, manufacturing scale-up, and launch readiness.
* Analyze experimental and product performance data to validate designs, identify risks, and guide engineering decisions.
* Drive design reviews and technical assessments to evaluate design trade-offs and ensure performance, quality, cost, and manufacturability requirements are met.  
** Customer & Field Support
*** Translate customer needs, application challenges, and business requirements into actionable product improvements and new technical capabilities.
* Partner with applications and customer-facing teams to optimize designs for real-world customer applications.
* Provide technical escalation support for complex field and customer issues, drawing on hands-on engineering expertise and structured problem-solving.
* Aggregate customer feedback, field performance, and technical learnings to recommend product enhancements and influence future design direction.  
** Troubleshooting & Continuous Improvement
*** Lead troubleshooting and root cause analysis for complex product and field issues, developing prototypes and design modifications to validate corrective solutions.
* Apply structured problem-solving and…