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Senior/Principal Analog & Mixed Signal Design Engineers

Lumilens· Engineering
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Hybrid (San Jose)Full-timePosted 2mo ago

About the role

We are seeking an experienced Analog / RF / Mixed-Signal IC Design Engineer to deliver high-performance SerDes circuits for optical links in advanced CMOS nodes. This role involves start-to-finish ownership of analog mixed-signal building blocks, from architectural definition through silicon validation, in a fast-moving and technically rigorous environment. You will collaborate closely with digital, layout, and validation teams to deliver scalable, manufacturable IPs.

Responsibilities

  • Architect and design high-speed analog and mixed-signal circuits, including:
  • - High-speed SerDes transmit/receive circuits (112G/224G/448G PAM4 and/or NRZ signaling)
  • - Clocking and timing circuits (PLLs, DLLs, CDRs, and ultra-low-jitter references)
  • - Transmit drivers (linear and DAC-based)
  • - Transimpedance amplifiers (TIAs) and receiver front-ends
  • - Equalization circuits including CTLE, FFE, DFE
  • - Biasing networks, bandgaps, and on-chip power regulation
  • - Perform transistor-level design, simulation, and optimization across PVT corners.
  • - Analyze and optimize bandwidth, noise, linearity, jitter, stability, and power.
  • - Work closely with layout engineers on floorplanning, matching, isolation, and parasitic management.
  • - Define and support silicon bring-up, characterization, and debug, including correlation to simulations.
  • - Contribute to design methodology, IP reuse, and best practices across programs.

Qualifications

  • MS or PhD in Electrical Engineering or related field.
  • 7+ years of hands-on analog or mixed-signal IC design experience.
  • Strong fundamentals in:
  • - Feedback and stability analysis
  • - Noise and jitter modeling
  • - High-speed analog, SerDes, or mm-wave circuit design experience
  • - Power integrity and substrate isolation
  • Experience taking Driver, TIA, or other data-path AMS blocks through tape-out and lab validation.
  • Proficiency with industry-standard analog design and simulation tools.

Skills

Required:High-speed analog and mixed-signal circuit designTransimpedance amplifiers (TIAs)Clocking and timing circuitsNoise and jitter modelingPower integrity and substrate isolation
Nice to have:CMOS process nodes

Benefits

  • Competitive salary and significant equity compensation in a rapidly growing, well-funded startup.
  • Comprehensive health, dental, and vision insurance.
  • Flexible time off policy.
  • Direct impact on groundbreaking technology shaping the future of AI and data centers.
  • Opportunity to work with a highly experienced and collaborative team.
  • Dynamic and innovative work environment
  • Opportunity for rapid career growth
Last updated Oct 24, 2026. Interested? Apply on the company site.

About Lumilens

Connectivity Platform for AI

Lumilens provides next-gen photonic interconnects for massively scaling out – and scaling up – AI compute infrastructure.

Photonic InterconnectsNext-Gen ManufacturingSystem-level knowledgeLumicore platformCPO/SiPh manufacturing
Company profileWebsite

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