Nexthop AI

Nexthop AI

Optical Test Engineer

Santa Clara, California

Sponsorship not specifiedDetected 44 days ago
PythonNLPSystems EngineeringElectrical EngineeringTest Automation

About the role

  • As an Optical Test Engineer, you'll be responsible for the qualification, validation, and system-level testing of high-speed optical modules (e.g., 400G, 800G, 1.6T) used in advanced datacenter and AI networking environments.
  • Optical Module Qualification: Test and characterize transceivers across temperature, voltage, and traffic conditions to ensure performance and compliance.
  • Capture metrics like BER, power consumption, thermal stability, and link reliability under stress.

Responsibilities

  • Lab Bring-Up and Test Automation: Setup and maintain test environments using BERTs, power meters, oscilloscopes, and traffic generators. Automate workflows using Python.
  • System-Level Validation: Validate module performance in switch ASIC systems and AI networking setups. Capture metrics like BER, power consumption, thermal stability, and link reliability under stress.
  • Debug and Analysis: Troubleshoot performance issues such as signal integrity degradation, module misbehavior, or unexpected power/thermal behavior. Collaborate with cross-functional teams for root-cause analysis.
  • Lab Bring-Up and Test Automation: Setup and maintain test environments using BERTs, power meters, oscilloscopes, and traffic generators.
  • System-Level Validation: Validate module performance in switch ASIC systems and AI networking setups.
  • Collaborate with cross-functional teams for root-cause analysis.
  • Setup and maintain test environments using BERTs, power meters, oscilloscopes, and traffic generators.

Requirements

  • 5+ years of experience testing optical modules or electrical/optical systems
  • Hands-on experience in high-speed optical transmission testing, including fiber links, and state of the art test equipment: BERT, oscilloscope, DCA, power meters, OSA, thermal chambers
  • Familiarity with CMIS, MDIO, or I²C interfaces
  • Ability to work in a fast-paced startup environment and adapt to evolving priorities.

Nice to have

  • Industry experience working with 400G/800G/1.6T pluggable modules (QSFP-DD, OSFP)
  • Knowledge of IEEE 802.3 Ethernet, MSA or OIF standards including CMIS
  • Experience validating hardware in datacenter or AI cluster environments
  • Familiarity with environmental and reliability testing (temperature cycling, HTOL, etc.)
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This listing is sourced directly from Nexthop AI's careers page and normalized into a canonical job model.