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Dsp – System Architect

AMS Engineering

Updated on 7/3/2024

Celestial AI

Celestial AI

51-200 employees

Silicon photonics for high-performance computing

AI & Machine Learning

Compensation Overview

$175k - $225kAnnually

+ Equity

Senior, Expert

Toronto, ON, Canada + 2 more

Electrical Engineering
RF and Microwave Engineering
Signal Processing Engineering
Required Skills
Data Structures & Algorithms
  • Requires master’s degree with 6+ years of experience in related areas of expertise or PhD with 3+ years of experience
  • Knowledgeable about the common high-speed serial data protocols NRZ/PAM4 and system standards
  • Strong experience in communication system modeling in Matlab, C and/or Python
  • Experience in high-speed DSP, especially FFE/DFE, Clock and Data Recovery (CDR)
  • Experience with FEC (RS, soft decoding, Viterbi algorithm)
  • Experience with high-speed Analog Serdes and the associated calibration algorithms
  • Experience with debugging complex analog issues to improve system performance is required
  • Knowledge of digital design of DSP blocks will be a huge plus
  • Understanding digital signal processing and digital communications for optical interfaces
  • Modelling/simulation/analysis of systems including high speed analog components (ADC, DAC, drivers, TIA), opto-electronic components (optical modulators, optical mixers, photodiodes, lasers, optical mux/demux, optical amplifiers), fiber impairments (CD, PMD, non-linearities) and DSP algorithms (calibration of analog and optical nonidealities, equalizers, carrier frequency/phase recovery, timing recovery)
  • Analysis and modelling of systems to drive definition of standards in OIF/IEEE/ITU-T
  • Work with lab equipment (spectrum analyzers, scopes, VOA, lasers, ASE generators etc.)
  • Design experiments to collect/analyze data to enable definition of next generation DSP
  • Debug complex optical, analog and signal processing problems
  • Design and simulate DSP architectures, define key capabilities, performance requirements and drive specifications for both analog and digital designers
  • Create DSP and FEC hardware block specifications appropriate for RTL implementation
  • Perform research activities in digital signal processing for SerDes and optical channels
  • Work with designers to ensure circuit architecture can be efficiently implemented
  • Develop/perform behavioral modeling of mixed-signal circuit designs for transceivers
  • Provide guidance on test plans for lab characterization once design comes back from fab
  • Participate in chip lab bring up
  • Should be comfortable working with lab equipment

Celestial AI has developed the Photonic Fabric™ technology platform, utilizing silicon photonics for data movement within and between chips, enabling high-performance computing solutions with differentiated single node performance and efficient scalability for multi-node and multi-model applications. The platform leverages integrated silicon photonics for data movement, providing significant performance gains for machine learning and high-performance computing applications, with a projected addressable market exceeding $70 billion in 2025.

Company Stage

Series C

Total Funding



Santa Clara, California



Growth & Insights

6 month growth


1 year growth


2 year growth