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Aktif
Ofis
Irvine, CA or San Jose, CA
Yayınlandı · 20.09.2026
Greenhouse (US)

# Principal PLL Design Engineer

Celero Communications, Inc.

Are you a PLL Design Engineer passionate about developing the high-speed clocking technology that will power the next generation of AI infrastructure? Join our fast-growing semiconductor startup and help deliver disruptive High-Speed Interconnect solutions for tomorrow's optical networks. We are seeking a High-Speed CMOS PLL Analog Design Engineer to play a key role in the architecture and design of advanced clocking circuits for next-generation optical transceivers, high-speed SerDes, and high-performance ADC/DAC systems. In this role, you will architect and design state-of-the-art PLLs for industry-leading transceivers, working alongside a world-class team to solve some of the most challenging mixed-signal design problems in advanced CMOS technologies. This is an opportunity to make a significant technical impact while helping build groundbreaking products from the ground up. Locations: Irvine, CA (HQ) | San Jose, CA | Vancouver, BC | Ottawa, ON What You Will Do:
• Understand trade-offs between different PLL topologies (e.g., integer-N, fractional-N, all-digital/ADPLL) to meet specifications for power, area, jitter, and frequency range
• Architect, design and simulate analog/mixed-signal PLL building blocks (VCOs, charge pumps, dividers, PFDs, Loop Filters) at transistor level using tools like Cadence Virtuoso and Spectre
• Address challenges in advanced node technologies, such as self-heating, electromigration, voltage-controlled oscillator (VCO) linearization and device-level noise optimization
• Supervise and verify layouts produced by layout engineers to ensure floorplanning, matching, and parasitic minimization using advanced node technologies
• Be responsible for PLL bring up in the lab, conducting performance characterization using state-of-the-art lab equipment
• Conduct comprehensive system-level simulations and validation for PLL integration into advanced transceiver technologies What You Will Bring: 
• Master’s degree and/or PhD in Electrical Engineering or related fields with 5+ years of relevant experience in PLL design, and production level tape-out experience
• Must have extensive experience with advanced node technologies (16nm/12nm, 7nm, 5nm, 3nm, 2nm processes)
• Deep understanding of phase noise analysis, VCO design, LDOs and supporting circuitry associated with PLLs
• Proficient in cadence virtuoso, electromagnetic simulator (e.g., EMX/HFSS), and MATLAB for system-level modelling
• Strong communication and documentation skills Annual Base Salary Range for US: $150,000 - $250,000 (The final offer will be determined based on job-related skills, experience, qualifications, and location.)

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