Mixed-Signal Validation Engineer
- Pay
- $186,000 – $246,000 per year
- Location
- Mountain View, CA · Hybrid
- Job type
- Full-time
- Level
- Senior
- Experience
- 7+ years
- Education
- Master's degree
- Listed
- 30 days ago
Skills & highlights for this role
- mixed-signal circuit design
- high-speed analog/photonic link
- silicon product development flow
- lab instrument test setups
Also useful
- SerDes PCS and equalization
- forward error-correction
- SPICE
- IBIS-AMI
- MATLAB or Python
Stated benefits & perks
- Health
- Dental
- Vision
- Disability
- Commuter benefits
Responsibilities
- Own mixed-signal architecture validation for Lightmatter's Passage product line. Work closely with the rest of the architecture team, chip design team, and the software team.
- Influence the mixed-signal architecture from initial concept through high-volume production.
- Validate and specify system-level mixed-signal designs, integrating complex AMS and photonic circuits. These circuits include high-speed drivers and receivers, SerDes, ADCs/DACs, digital controllers, and photonic modulators and detectors.
- Work closely with test and validation engineers to validate hardware against simulation predictions.
- Collaborate with DV team to translate pre-silicon verification into post-silicon validation
- Support architectural-level firmware validation
- Author, review, and validate architectural specifications and test methodologies.
- Identify improvements and potential pitfalls (including mitigation strategies) regarding the execution of the proposed architectures.
Qualifications
- MS in Electrical Engineering or a related field with 7+ years of relevant experience.
- In-depth knowledge of design flows for AMS electronics, preferably on photonic communication channels.
- Proven track record of delivering successful high-volume silicon to market, and a thorough understanding of the silicon product development flow.
- In-depth knowledge of mixed-signal circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
- Hands-on experience with lab instruments and test setups.
- Demonstrated strong problem-solving skills, specifically for problems that do not have obvious solutions.
- Ability and desire to collaborate in a cross-disciplinary team.
Preferred Qualifications
- Understanding of SerDes PCS layer and equalization, along with forward error-correction schemes.
- Power user of development tools, including AI agents, CAD tools, SPICE simulators, IBIS-AMI simulators, and programming languages (e.g., MATLAB or Python).
- Experience in optical link bring-up and debug.
Pay and benefits
We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.
Salary Range
total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.
$186,000—$246,000 USD
Benefits
- Comprehensive Health Care Plan (Medical, Dental & Vision)
- Retirement Savings Matching Program
- Life Insurance (Basic, Voluntary & AD&D)
- Generous Time Off (Vacation, Sick & Public Holidays)
- Paid Family Leave
- Short Term & Long Term Disability
- Training & Development
- Commuter Benefits
- Flexible, hybrid workplace model
- Equity grants (applicable to full-time employees)
Export Control
Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.
About Lightmatter
Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world's first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.
Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!
If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.
Lightmatter is (re)inventing the future of computing with light!
We are hiring a Mixed-Signal Validation Engineer to partner with the internal engineering team at Lightmatter to deliver groundbreaking products to market. In this role, you will require a solid understanding of Lightmatter products, mixed-signal digital architecture, process technology, chip design, and clear communication skills.
In this role, you will be validating the architecture of the mixed-signal circuits that enable a groundbreaking photonic-based communication fabric. Your work will enable not only the low-level AMS/photonic devices but also the necessary interfaces with firmware and software. You will also influence product definition and technological roadmaps, as well as suitable design and verification methodologies.
You will report directly to the Head of Product Validation, but you will also work closely with our digital, analog, photonic, and software teams. We are particularly looking for someone with expertise in architecting mixed-signal circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.
Join a tight-knit team where each individual's contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of data center from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.
Equal opportunity and legal notices
Benefits eligibility may vary depending on your employment status and location. Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.
From Lightmatter's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
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Common questions
What is the salary for the Mixed-Signal Validation Engineer role at Lightmatter?
The Mixed-Signal Validation Engineer posting at Lightmatter states compensation of $186,000 – $246,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on Lightmatter's official career site.
Where is the Mixed-Signal Validation Engineer job at Lightmatter located?
This Mixed-Signal Validation Engineer position at Lightmatter is located in Mountain View, CA (Hybrid). Always check Lightmatter's application page for specific state eligibility or relocation policies.
What qualifications are required for Mixed-Signal Validation Engineer at Lightmatter?
For the Mixed-Signal Validation Engineer role, Lightmatter highlights 7+ years of relevant experience; a master's degree; experience with mixed-signal circuit design, high-speed analog/photonic link, silicon product development flow, lab instrument test setups. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Mixed-Signal Validation Engineer position at Lightmatter?
This listing links directly to Lightmatter's Greenhouse application page. You can apply directly on Lightmatter's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.