Sr. Hardware Test Engineer

描述

Samtec, Inc 的职位

Job title

Sr. HW TEST ENGINEER

Summary/Objective

The Sr. hardware (HW) Test Engineer owns electrical and high-speed hardware test for Samtec optical products, namely on-board optical engines and modules such as the FireFly™ family, in vertical-cavity surface-emitting laser (VCSEL)-based multimode and silicon photonics (SiPh) variants and including optical PCI Express, and pluggable optical transceivers built with original design manufacturer (ODM) partners. The role develops electrical, high-speed signal, and control-interface test methods and automated test stations for engineering validation and production, correlates results across the Samtec Taiwan lab, Samtec manufacturing sites, and original design manufacturer / contract manufacturer (ODM/CM) production test, and isolates hardware failures efficiently. It requires strong knowledge of component behavior, circuit operation, signal integrity (SI) and power integrity (PI), digital signal processor (DSP)/microcontroller unit (MCU) control interfaces, and high-speed serial link test methodology.

Essential Functions/ Responsibilities

• Develop electrical and high-speed hardware test plans, test limits, test flows, and validation methods for optical engines and transceivers, from engineering validation test (EVT) and design validation test (DVT) through production release.
• Characterize and validate electronic components and interfaces, including DSPs and retimers, MCUs, power management integrated circuits (ICs), clocks, electrically erasable programmable read-only memory (EEPROM), sensors, laser-driver and transimpedance amplifier (TIA) electrical interfaces, and protection circuits; read and analyze schematics, power trees, transmit/receive (Tx/Rx) electrical paths, control interfaces, clock/reset circuits, and high-speed signal paths, and feed findings back to the design team.

Perform electrical testing

voltage, current, module power, power sequencing, ripple/noise, inrush current, clock, reset, control signals, and interface timing.

• Perform high-speed electrical Tx/Rx characterization at 28G non-return-to-zero (NRZ) and 56G/112G/224G four-level pulse amplitude modulation (PAM4) per lane: bit error ratio (BER), eye diagram, jitter, forward error correction (FEC) statistics, clock and data recovery (CDR) behavior, transmitter finite impulse response (FIR) and receiver continuous-time linear equalizer and decision feedback equalizer (CTLE/DFE) equalization, and loopback testing.
• Perform or support

SI/PI characterization of modules, host boards, and fixtures

insertion loss, return loss, impedance, time-domain reflectometry (TDR), crosstalk, and S-parameters.

Validate module management and control functions

inter-integrated circuit and management data input/output (I2C/MDIO) communication, EEPROM and memory maps, alarms and warnings, reset and low-power states, module state-machine behavior, and firmware–hardware interactions, per Common Management Interface Specification (CMIS) for pluggable transceivers and Samtec interface definitions for on-board optics.

• Build, integrate, maintain, and troubleshoot high-speed test platforms: bit error ratio testers (BERTs), real-time and sampling oscilloscopes, vector network analyzers (VNAs), TDR instruments, host and evaluation boards, fixtures, cables, and Ethernet-switch or PCI Express host platforms.
• Develop and maintain automated test software, instrument control, data logging, limit management, traceability, and reporting in Python, LabVIEW, C#, or equivalent.
• Perform test correlation, measurement system analysis and gauge repeatability and reproducibility (MSA/GR&R), reference-plane verification, cable and fixture de-embedding and loss compensation, calibration control, and golden-sample management across the Samtec Taiwan lab, Samtec manufacturing sites, and ODM/CM production test.
• Analyze test data and isolate failures among device hardware, components, circuits, firmware settings, SI/PI, fixtures, cables, instruments, software, environment, and manufacturing process; drive closure with design, product, and quality engineering.
• Improve test time, retest rate, false-failure rate, test coverage, station stability, and production test capability; support test deployment and transfer to Samtec manufacturing sites and ODM/CM partners.
• Mentor engineers and technicians and establish hardware test lab practices and documentation.
• Participate in reviewing and responding to suppliers' specification responses, waiver/deviation requests, test reports, root cause analysis (RCA) reports, process change notifications (PCNs), and related technical documents, with focus on electrical, high-speed hardware, and test impacts.

“The responsibilities as defined are intended to serve as a general guideline for this position. Associates may be asked to perform additional tasks depending on strengths and capabilities.”

Experience / Qualifications (Ideal Candidate Profile)

These qualifications describe the ideal candidate profile; candidates with a strong partial match may also be considered during initial screening.

• Bachelor's degree or above in Electrical Engineering, Electronics Engineering, Communications Engineering, or a related technical discipline.
• Ideally, 5+ years of hardware test, or hardware design and validation, experience on high-speed optical modules, transceivers, serializer/deserializer (SerDes) or physical-layer device (PHY) devices, or similar high-speed electronic products.
• A strong understanding of electronic components, analog/digital and power circuits, control interfaces, and high-speed serial links is preferred.
• Working knowledge of NRZ/PAM4 signaling, BER, FEC, jitter, eye diagrams, CDR, equalization, SI, and PI.
• Ability to read schematics and troubleshoot hardware with oscilloscopes, BERTs, VNAs, TDR instruments, and equivalent laboratory equipment.
• Working knowledge of DSP, MCU, power IC, clock, EEPROM, sensor, driver/TIA electrical interfaces, and module control functions.
• Experience developing automated test with Python, LabVIEW, C#, C/C++, or equivalent programming environments.
• Strong debugging, data analysis, failure isolation, and root cause analysis skills are preferred; good written and verbal English communication skills.

Preferred Experience / Desired Skills

• Experience with 400G, 800G, or 1.6T optical transceivers, on-board or mid-board optical engines, or other 112G/224G PAM4 platforms; VCSEL-based multimode and SiPh products are both relevant.
• Experience with CMIS, I2C/MDIO, module evaluation boards, Ethernet-switch/BERT platforms, and PCI Express (Gen 5/Gen 6) host and link testing.
• Experience with S-parameter, TDR, insertion loss, return loss, crosstalk, and high-speed fixture and cable characterization and de-embedding.
• Experience with test correlation, MSA/GR&R, guard banding, measurement uncertainty, and production test deployment, including transfer to ODM/CM partners.
• Knowledge of optical module architecture and the electrical-to-optical interaction among DSP/retimer, driver, laser, photodiode (PD), and TIA; able to run combined electrical/optical debug with the optoelectronic (OE) test engineer.
• Self-motivated, well organized, and able to work independently and cross-functionally with teams in Taiwan, the United States, and partner sites.
• Ability and willingness to travel domestically and internationally as needed.

Training required

• On-the-job training as appropriate.
• Product-, process-, test-, quality-, and safety-specific training as required by assigned responsibilities.