Test Engineer (Optical)

Luxshare Precision Industry Co., Ltd.; Milpitas (CA); Hybrid; USD 120,000 - 170,000; Full time

Benefits offered by this job

Health, dental, and vision coverage

401(k) retirement plan with company

Wellness programs and employee support

Life and disability insurance

Paid time off and holidays

Job summary

Luxshare Precision Industry Co., Ltd. in Milpitas, CA seeks an experienced Optical System Engineer to drive validation and integration of high-speed optical interconnects (400G/800G/1.6T) at switch and rack levels, ensuring robust system performance in hyperscale data centers.

The ideal candidate bridges electrical and optical domains, conducts end-to-end testing from transceivers to host systems, and collaborates with SI, hardware, firmware, and vendor teams to resolve cross-layer issues and

Qualifications

• Bachelor’s or Master’s degree in Optical Engineering, Electrical Engineering, Physics, or related field.
• 3+ years of hands-on optical system validation or integration experience in datacom or telecom environments.
• Deep understanding of optical transceivers (QSFP-DD, OSFP) and high-speed signaling principles.

Responsibilities

• Lead optical system validation and integration at the switch and rack level, including end-to-end path testing from transceivers to host systems.
• Perform optical link bring-up, functional validation, and stress testing of 400G/800G/1.6T modules across switch platforms.
• Design and execute test plans to evaluate performance under realistic data center configurations and traffic loads.
• Analyze system-level metrics such as BER, signal integrity, power budget, insertion loss, and FEC margins.
• Collaborate with Signal Integrity (SI) teams to validate host-board compatibility and optimize performance.
• Partner with hardware, firmware, and transceiver vendors to troubleshoot and resolve cross-layer integration issues.
• Drive root cause analysis for failures identified during validation and document findings and corrective actions.
• Develop and maintain automated test setups and scripts using Python or other scripting tools.
• Interface with network architects and deployment teams to translate system requirements into detailed validation specifications.

Skills

Optical system validation

Data center interconnects

Scripting (Python, Bash)

System-level integration

End-to-end testing

BER/signal integrity analysis

Cross-functional collaboration

Education

Bachelor’s or Master’s degree in Optical/Electrical Engineering or Physics

Tools

BERTs

Oscilloscopes

Optical power meters

Protocol analyzers

Test automation tools

Job description

We are seeking an experienced and hands‑on Optical System Engineer with a deep background in data communication systems and optical transceiver integration at the switch and rack level. This role is central to the validation and system‑level testing of high‑speed optical interconnects (400G/800G/1.6T), ensuring seamless performance within hyperscale and cloud data center environments.

The ideal candidate is proficient in both the electrical and optical domains, capable of bridging transceiver‑level performance with system‑level functionality across switches, servers, and racks to solve complex integration challenges.

Key Responsibilities

• Lead optical system validation and integration at the switch and rack level, including end‑to‑end path testing from transceivers to host systems.
• Perform optical link bring‑up, functional validation, and stress testing of 400G/800G/1.6T modules across various switch platforms.
• Design and execute comprehensive test plans to evaluate performance under realistic data center configurations and traffic loads.
• Analyze system‑level performance metrics such as BER, signal integrity, power budget, insertion loss, and FEC margins.
• Collaborate with Signal Integrity (SI) teams to validate host‑board compatibility and optimize performance.
• Partner with hardware, firmware, and transceiver vendors to troubleshoot and resolve cross‑layer integration issues.
• Drive root cause analysis for failures identified during validation and document findings and corrective actions.
• Develop and maintain automated test setups and scripts using Python or other scripting tools.
• Interface with network architects and deployment teams to translate system requirements into detailed validation specifications.

Required Qualifications:

• Bachelor’s or Master’s degree in Optical Engineering, Electrical Engineering, Physics, or a related field.
• 3+ years of hands‑on experience in optical system validation or integration within datacom or telecom environments.
• Deep understanding of optical transceivers (e.g., QSFP‑DD, OSFP), fiber connectivity, and high‑speed signaling principles.
• Direct experience working with switch ASIC platforms and network hardware.
• Familiarity with Ethernet standards: IEEE 802.3bs, 802.3ck, 802.3dj, etc.
• Hands‑on proficiency with test instruments including BERTs, oscilloscopes, optical power meters, and protocol analyzers.
• Proficiency in scripting languages (e.g., Python, Bash) for test automation and data analysis.
• Proven experience in lab environments managing test fixtures, fiber handling, and cabling.

Preferred Qualifications:

• Familiarity with data center network architectures (e.g., leaf‑spine topology, TOR switches, AI/ML cluster designs).
• Experience with Common Management Interface Specification (CMIS), Digital Diagnostic Monitoring (DDM), and transceiver diagnostics.
• Understanding of thermal, EMI, and mechanical constraints in rack‑level integration.
• Knowledge of emerging technologies such as silicon photonics, co‑packaged optics (CPO), or linear‑drive pluggable optics (LPO).

We offer a comprehensive benefits package designed to support our employees' health, and well‑being, including:

• Health, dental, and vision coverage
• 401(k) retirement plan with company matching
• Wellness programs and employee support resources
• Life and disability insurance
• Paid time off and company holidays

About Luxshare-Tech

Luxshare Technology, a subsidiary of Luxshare Precision, is a leading provider of communication infrastructure and enterprise‑class interconnect products. We are a global designer and manufacturer of 5G communication equipment and enterprise‑level interconnect solutions, including base station antennas, filters, RRUs, connectors, cables, optical modules, and AOC products. Leveraging innovative design, intelligent manufacturing, and strong partnerships, we collaborate with technology leaders to create agile, cutting‑edge interconnect solutions.

Our business covers global telecom and enterprise customers, with sales, service teams, and R&D centers in the Americas, Europe, and Japan, enabling fast response and on‑site support worldwide. Our products are widely used in wireless communication base stations, data centers, servers, switches, and routers, offering complete solutions from wireless, electrical, and optical interconnect to thermal management.