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Sr./Principal Mixed Signal Digital Architect

Lightmatter is developing next-generation AI data center photonics and is hiring a Sr./Principal Mixed-Signal Digital Architect to define and own digital architectures that enable high-speed AMS and photonic communication fabrics. The role partners with internal design teams, external customers and vendors to drive architecture from concept through high-volume production, with strong emphasis on cross-disciplinary collaboration, technical leadership, and customer-facing communication.

Skills

  • Power-efficient digital design for high-speed AMS and photonic links
  • System-level architecture of SerDes, ADC/DAC and high-speed IO
  • Strong RTL and verification collaboration experience
  • Experience with device bring-up, control loops and DSP for high-speed links
  • Vendor and customer engagement for silicon product development
  • Familiarity with SPICE, IBIS-AMI and CAD tool flows
  • Proficiency in scripting/analysis (Python, MATLAB) for modeling and validation
  • Strong written and verbal technical communication, including conference representation

Responsibilities

  • Own digital architecture for Passage product and coordinate architecture across digital, analog, photonic, and software teams
  • Define system-level digital designs integrating high-speed drivers/receivers, SerDes, ADC/DAC, modulators and detectors
  • Deliver architectural specifications, product datasheets and customer-facing reference designs
  • Collaborate with RTL and DV teams to enable block-level implementation and verification
  • Work with program managers to plan and execute product development through production
  • Engage directly with top-tier semiconductor customers and vendors during development and bring-up
  • Validate hardware with test/validation engineers versus simulation predictions
  • Identify risks, mitigation strategies and roadmap/technology direction

Education

  • Master's degree in Electrical or Computer Engineering (required)
  • 12+ years of relevant industry experience (required)

Benefits

  • Comprehensive medical, dental & vision
  • Retirement savings matching
  • Life, short-term and long-term disability insurance
  • Generous paid time off and paid family leave
  • Training & development support
  • Commuter benefits
  • Flexible hybrid workplace model
  • Equity grants and performance-based equity
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$244500 / YEARLY (est.)
min
max
$205000K
$284000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

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Lightmatter is a team of designers, developers, and strategists that build software applications to help the world's most promising health companies improve the lives of their patients.

2 jobs
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BADGES
Badge Rapid Growth
CULTURE VALUES
Customer-Centric
Empathetic
Transparent & Candid
Growth & Learning
Work/Life Harmony
BENEFITS & PERKS
Maternity Leave
WFH Reimbursements
Fully Distributed
Company Retreats
Medical Insurance
Vision Insurance
Dental Insurance
Unlimited Vacation
Paid Time-Off
Paid Sick Days
Paid Holidays
Learning & Development
Health Savings Account (HSA)
FUNDING
DEPARTMENTS
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
SALARY RANGE
$205,000/yr - $284,000/yr
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
January 19, 2026
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