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Eliyan

Analog - Sr/Principal High-Speed Analog Circuit Design Engineer (Optical I/O – Laser Drivers & TIAs)

Eliyan Bay Area 8 days ago
engineering
Eliyan is moving fast — scaling electrical and optical connectivity technologies that will define the next generation of AI hardware. We’re looking for a Sr/Principal Analog Designer with serious high-speed chops to help build the industry's most advanced optical front-ends. The ideal candidate will vibe with fast decisions, big technical swings, and shipping silicon that pushes 100–200+ Gbps per lane. The focus of this role will be laser drivers, TIAs, and highspeed analog front-end circuits in cutting-edge FinFET nodes. You will work with a cross-functional team of experts that operate from first principles, innovate and push the envelope to create high-volume and high-performance manufacturable products. We offer a fun work environment with excellent benefits. 

Key Responsibilities:

  • High-Speed Analog Design 
  • Design and implement laser drivers, TIAs, limiting amps, EQ blocks, biasing circuits, and other analog front-end components for 50G → 200G data rates.
  • Build circuits that hit ambitious bandwidth, noise, jitter, and power targets under real system constraints. 
  • Advanced Silicon Development
  • Execute transistor-level design in 12nm-and-below CMOS/FinFET technologies.
  • Run comprehensive simulation flows: transient, AC, noise, corner/PVT, BER, and post-layout verification.
  • Collaborate closely with layout to optimize parasitics, floorplan efficiently, and maintain signal integrity.
  • Optical/Electrical Co-Design 
  • Work with internal teams and laser/PD vendors to align on electro-optical requirements.
  • Understand laser dynamics (preferably VCSEL behavior), modulation characteristics, thermal effects, parasitics, and reliability constraints.
  • Shape electrical–optical tradeoffs to achieve robust high-speed performance in real environments.
  • Silicon Bring-Up & Validation
  • Lead lab characterization, debug, and performance verification for high-speed optical paths.
  • Analyze data from scopes, BERTs, and optical test setups to guide iteration and improve link behavior.
  • Support product integration and help drive the design into production.
  • Technical Leadership in a Startup Environment 
  • Mentor junior designers and raise the analog design bar across the team.
  • Work cross-functionally with mixed-signal, digital, packaging, FW, and system teams.
  • Influence product direction through data-driven insights and grounded technical judgment.

    • Qualifications:

  • 10–15+ years in high-speed analog/mixed-signal IC design.
  • Strong background designing laser drivers & TIAs for 50–200 Gbps+ optical links.
  • VCSEL driver/TIA experience strongly preferred, but experience with other laser types is welcome.
  • Deep understanding of broadband analog techniques, low-noise design, and high-speed signaling.
  • Proven silicon track record from concept → tapeout → bring-up → production.
  • Experience with optical link budgets, fibers, packaging effects, and thermal impacts.
  • Ability to move fast, make clear decisions, and thrive in a high-growth startup environment.
  • Knowledge of common interfaces: I2C, JTAG, USB, GPIO
  • Experience with microcontroller and FPGA integration
  • Proficiency with PCB design software (Allegro PCB or equivalent)
  • Skills in firmware, embedded, and scripting is a plus
  • Bachelor's degree in Electrical Engineering or related field

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