Senior Principal Technical Support Engineer

Formfactor

. Provide expert-level technical support for advanced probe card products used in semiconductor wafer testing .

Posted 10/27/2026full-timeRemote • California • United StatesSenior💰 $122,600 - $160,965 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in semiconductor wafer testing and probe card technology, with a strong focus on diagnosing and resolving technical issues, conducting root cause analysis, and supporting high-volume manufacturing processes. Proficient in collaborating with cross-functional teams and providing customer support, including training on best practices.

Highest-signal resume keywords

Probe Card Technology ExpertiseRoot Cause AnalysisHigh-Volume Manufacturing SupportYield Engineering KnowledgeCustomer-Facing Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Electrical DebugMechanical AssemblyWafer Test Data AnalysisTechnical Report CreationProbe Card OptimizationMicroscopy TechniquesInspection Tools UsageContact Resistance TrackingMTBF AnalysisAdvanced Node Knowledge

Soft Skills

CollaborationTraining DeliveryProblem-SolvingCommunication

Tools & Technologies

Automatic Wafer ProberFormFactor Probe Cards

Industry Keywords

Semiconductor TestingYield ExcursionsElectrical Continuity IssuesParametric AnomaliesMEMS TechnologyCantilever ProbesVertical ProbesField Application SupportCustomer QualificationsEngineering Change Requests

Tech Stack

Tools & technologies

Assembly

About the role

Key responsibilities & impact

Provide expert-level technical support for advanced probe card products used in semiconductor wafer testing
Diagnose and resolve electrical, mechanical, and process-related issues affecting probe card performance
Support customers with yield excursions, electrical continuity issues, contact problems, and parametric anomalies during wafer sort
Act as the primary escalation point for complex technical issues
Perform root cause analysis using ATE data, electrical measurements, microscopy, and inspection tools
Interpret wafer sort data to identify probe-related anomalies
Collaborate with the failure analysis lab to drive corrective actions
Develop expertise in MEMS, cantilever, and vertical probe technologies
Guide probe card setup, optimization, overdrive, contact force, cleaning cycles, alignment procedures, and maintenance
Support new product introductions and customer qualifications
Collaborate with Product Engineering, Manufacturing, and Field Service teams
Drive corrective and preventive actions and participate in engineering change requests
Provide onsite support at customer fabs and OSATs when required
Conduct technical reviews and troubleshooting sessions with customers
Deliver training on probe card operation, maintenance, and best practices
Analyze wafer test datasets to identify trends and issues
Create technical reports, dashboards, and failure summaries
Track contact resistance, probe-card-attributable yield loss, and MTBF

Requirements

What you’ll need

Minimum of 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree; or a PhD with 3 years experience; or equivalent experience
Experience with FormFactor probe cards or similar technologies
Knowledge of advanced nodes (e.g., FinFET, 5nm/3nm processes)
Experience supporting high-volume manufacturing (HVM)
Familiarity with yield engineering and test optimization
Prior field application or customer-facing experience
Automatic Wafer Prober user experience
Hands-on mechanical assembly / electrical debug experience
Strong knowledge of semiconductor test processes and probe card technology
Ability to analyze wafer test datasets
Ability to provide occasional on-site customer support
Mandarin or Korean language ability is a plus
Day-shift availability

Benefits

Comp & perks

Medical insurance
Dental insurance
Vision insurance
Life insurance
Disability coverage
401(k) with company match
Employee stock purchase plan (ESPP)
Paid time off
Quarterly profit-sharing bonuses
Flexible spending or savings accounts