Mixed-Signal Validation Engineer
LightmatterJob Title
Mixed-Signal Validation Engineer
Role Summary
Validate system-level mixed-signal and photonic architectures for Lightmatter’s Passage product line, working across architecture, chip design, firmware, and software teams. The role focuses on translating pre-silicon verification into robust post-silicon validation and supporting high-volume production.
Experience Level
Senior-level. The posting specifies 7+ years of relevant experience.
Responsibilities
Own validation of mixed-signal architecture from concept to production and coordinate cross-functional test and verification activities.
- Own mixed-signal architecture validation for the Passage product line and coordinate with architecture, chip design, and software teams.
- Validate and specify system-level mixed-signal designs integrating AMS and photonic circuits (drivers/receivers, SerDes, ADC/DAC, digital controllers, modulators, detectors).
- Translate pre-silicon verification results into post-silicon validation with the DV and test teams.
- Work with test/validation engineers to compare hardware results to simulation predictions and refine test methodologies.
- Support architectural-level firmware validation and interfaces between hardware, firmware, and software.
- Author and review architectural specifications, test plans, and mitigation strategies for identified risks.
Requirements
Must-have technical skills, hands-on lab experience, and product-delivery experience.
- 7+ years of relevant experience (senior role).
- In-depth knowledge of AMS electronics design flows, preferably applied to photonic communication channels.
- Proven track record delivering high-volume silicon and familiarity with silicon product development flow.
- Expertise in mixed-signal circuit design for high-speed analog/photonic links, including device bring-up, control, and DSP interfaces.
- Hands-on experience with lab instruments and test setups for bring-up and validation.
- Strong analytical and problem-solving skills for ambiguous technical problems.
- Ability to collaborate across digital, analog, photonic, firmware, and software teams.
- Compliance capability with U.S. export control laws (candidates must be able to comply with applicable export control requirements).
Education Requirements
MS in Electrical Engineering or a related field is specified. The posting links the MS requirement to senior-level experience (7+ years). Fields mentioned include electrical engineering and related technical disciplines.
About the Company
Company: Lightmatter
Headquarters: Boston, Massachusetts, USA
Lightmatter develops photonic AI data-center infrastructure and optical chips for extreme-scale AI and HPC. The company invented the Passage 3D‑stacked photonics engine to provide high-bandwidth, low-latency interconnects across large-scale processors and raised $400M in Series D financing at a reported $4.4B valuation.
