Hardware Engineer IV

Posted 15 days ago

spectraforce technologiesSunnyvale (CA)

Validation Engineers Other Measuring and Controlling Device Manufacturing

SENIORITY

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About the role

Hardware Engineer IVSunnyvale CA12 Months Job Description: Role Summary: We are seeking an experienced EE Validation Engineer to support hardware validation of next-generation smart glasses, working closely with the validation lead. In this role, your primary focus will be monitoring validation progress, reviewing CM test reports, analyzing failures, and coordinating with EE design partners to drive issues to closure. You will also guide CM engineers on measurement procedures and perform hands-on PI/SI debug when needed. While you must possess strong hands-on measurement skills, the majority of your time will be spent interpreting data, tracking issues, and ensuring problems are resolved efficiently. You will not own final validation decisions, but you are expected to be technically strong enough to flag risks, recommend actions, and keep execution on track under the lead's direction.

Must-Have: Skills 4+ years of EE hardware validation experience with strong emphasis on power integrity and signal integrity Ability to develop test procedures that others execute — clear technical writing, structured SOPs, annotated diagrams. Strong schematic reading skills — trace signal paths, understand power distribution, map circuit function from schematics and datasheetsPCB layout review experience — assess probe access, SI/PI risk, debug strategy. Expert-level knowledge of lab instruments: high-bandwidth oscilloscopes, power rail probes, active/differential probes, current probes, spectrum analyzers Nice-to-have Skills Experience with wearable, mobile, or IoT hardware (space-constrained, low-power designs) Familiarity with proto/EVT/DVT/PVT build cycles and NPI environmentsExperience with issue tracking systems and cross-functional coordination in hardware programs

Responsibilities:

Issue Tracking & Closure (Primary Focus ~60%)Review CM-generated validation reports: verify data quality, flag anomalies, confirm pass/fail criteria are correctly applied
Analyze validation failures; determine whether issues are measurement errors, design defects, or assembly quality problems
Coordinate with EE design partners to present data, propose root cause hypotheses, and support corrective action decisions
Track open issues through resolution; ensure fixes are validated and closed in a timely manner
Facilitate communication between CM, EE design, layout, and firmware teams to keep issues moving
Maintain issue tracker and provide regular status updates to the FTE validation lead
Monitor overall validation progress against milestones; escalate risks and blockers earlyCM Guidance (~20%)Develop clear, repeatable test procedures (SOPs) that CM technicians can execute independently
Train and guide CM engineers/technicians on proper measurement techniques, probe placement, fixture usage, and data collection
Define probe points and measurement access strategy; communicate to CM with annotated layout markups
Provide real-time technical guidance to CM when measurements yield unexpected results
Establish clear acceptance criteria and escalation paths for CM to follow, in alignment with the FTE validation lead
Hands-On Measurement & Debug (~20%)Perform PI/SI measurements that require senior-level judgment (e.g., first article bring-up, intermittent failures, subtle noise sources)
Validate CM measurement setups by performing correlation measurements
Debug escalated issues that CM cannot resolve independently
Develop new measurement methodologies and fixtures for novel circuits or challenging probe access
Support prototype bring-up and characterization during build phases
Technical Knowledge Required: Power Integrity (PI)DC-DC converter characterization: line/load regulation, efficiency, transient response, output ripple/noise
Power sequencing validation and timing verification against IC specifications
Power rail stability under varying load conditions; current profiling
Battery charging circuit validation: charge profiles, protection, thermal limitsPDN concepts: ground bounce, decoupling strategy, voltage droop analysis
Signal Integrity (SI)
High-speed interface measurement: MIPI CSI, SPI, I2C, I2S/PDM, USB, UARTSignal quality assessment: rise/fall times, overshoot/undershoot, ringing, eye diagrams
Crosstalk, reflections, and impedance discontinuities on flex/rigid-flex assemblies
Clock signal quality and jitter characterization
Protocol-level correlation with physical-layer signal issues
Schematic & Layout Competency
Read and interpret multi-page schematics to understand circuit topology, power trees, and signal routing
Review PCB layout (rigid and flex) to identify optimal probe locations and debug access points
Assess layout for SI/PI risk: trace routing, return path continuity, impedance control, via transitions
Provide layout feedback to design team for improved testability

Required Qualifications:

BS/MS in Electrical Engineering 4+ years of EE hardware validation experience with strong emphasis on power integrity and signal integrity
Proven ability to analyze test data, identify root causes, and drive issues to closure with cross-functional teams
Experience reviewing test reports for correctness, identifying gaps, and driving follow-up actions
Ability to develop test procedures that others execute — clear technical writing, structured SOPs, annotated diagrams
Strong schematic reading skills — trace signal paths, understand power distribution, map circuit function from schematics and datasheetsPCB layout review experience — assess probe access, SI/PI risk, debug strategy
Expert-level knowledge of lab instruments: high-bandwidth oscilloscopes, power rail probes, active/differential probes, current probes, spectrum analyzers
Experience with DC-DC converter characterization and high-speed digital signal measurements
Solid understanding of transmission line theory, impedance matching, and flex PCB signal integrity challenges
Strong communication skills — ability to explain complex EE issues clearly to CM teams and design partners

Preferred Qualifications:

Experience working with CMs or ODMs in a validation support capacity
Experience with wearable, mobile, or IoT hardware (space-constrained, low-power designs)
Familiarity with RF measurement (BLE/WiFi TX power, sensitivity, antenna return loss)
Familiarity with proto/EVT/DVT/PVT build cycles and NPI environmentsExperience with issue tracking systems and cross-functional coordination in hardware programs
Tools & Environment: Keysight/Tektronix oscilloscopes (≥1 GHz), power rail probes, active probes, SMUs, VNAs, protocol analyzersscripting, schematic/layout viewers (Allegro, Altium, or equivalent), data analysis tools
Google Workspace, Tasks/JIRA for issue tracking
Daily interaction with validation lead, CM engineers (remote and on-site), EE design team, and FWStory Behind the Need – Business Group & Key Projects
Surrounding team & key projects
Apart of the wearables, smart glasses team.

Focus on tracking validation progress, reviewing test reports, analyzing failures, and coordinating with EE design partners to resolve issues. You'll guide CM engineers on measurement procedures and perform hands-on PI/SI debug as needed. The emphasis is on data interpretation, issue tracking, and driving resolution—not on owning final validation decisions. You're expected to flag risks, recommend actions, and keep execution on track under the lead's direction. How many rounds of interviews? 2Types of Interviews: Technical Interview Duration: 45 mins Applicant Notices & Disclaimers For information on benefits, equal opportunity employment, and location-specific applicant notices, click here

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