Signal Integrity Engineer

Few Details about the role :
Signal Integrity Engineer
About This Role
Lightmatter is looking for a Signal Integrity engineer to drive the next generation products from
concept to development. You will be part of the Signal Integrity, Power Integrity and Packaging
team, tasked with influencing the package and system architecture, design, and analysis
through lab bring-up to meet the product's signal integrity requirements. This position offers a
unique opportunity to solve complex interactions across digital, analog and photonics domains
while meeting stringent signal integrity goals.
Responsibilities
● Plan and execute moderate to complex signal integrity engineering tasks for high-speed
interfaces such as PCIe, UCIe and SerDes.
● Analyze high-speed channel characteristics including S-parameters, insertion loss,
return loss, and crosstalk to evaluate and optimize signal quality.
● Perform signal integrity analysis and simulations (eye diagram analysis, jitter analysis,
equalization) by adapting existing practices and procedures to evaluate design choices.
● Collaborate with cross-functional teams including hardware designers and PCB layout
engineers working on individual and team projects that impact the broader engineering
function.
● Assist hardware designers in ensuring proper impedance matching, termination, and
routing techniques, advising peers on complex signal integrity matters.
● Perform detailed signal integrity measurements and characterization using lab
equipment (oscilloscopes, network analyzers, TDRs, VNA) to validate design
performance and troubleshoot ill-defined issues.
● Participate in signal integrity design reviews, presenting findings and suggesting creative
variations in approach to ensure adherence to design specifications.
● Document and communicate signal integrity analysis results and design guidelines to
stakeholders, adapting communication style depending on the audience.
Qualifications
● Bachelor’s degree in Electrical Engineering or relevant field with a minimum of 5 years of
related experience; OR 3 years of experience and a Master’s degree; OR a PhD without
experience.
● Robust professional and specialized knowledge in signal integrity analysis for
high-speed interfaces.
● Proficiency in using simulation and analysis tools for signal integrity, including Ansys
Siwave, HFSS & Keysight ADS.
● Strong understanding of transmission line theory, impedance matching, and equalization techniques.
● Knowledge of signaling protocols for high-speed interfaces, including SerDes, UCIE, etc.
● Ensure robust signal integrity and timing performance for lower-speed critical interfaces
and control buses, such as system clocks, SPI, and I2C.
● Experience with PCB design and layout considerations for high-speed interfaces (layer
stack-up, routing, and via design).
● Proficiency in using lab equipment for signal measurement and characterization.
● Ability to write scripts to automate the simulation flow (Python, JavaScript, Ocean scripts, or SKILL).
● Ability to work independently, utilizing best judgment to select appropriate courses of
action, with work reviewed at critical checkpoints.
Preferred Qualifications
● Strong problem-solving and debugging skills for signal integrity-related issues.
● Understanding of CMOS process technologies and their impact on signal integrity.
● Demonstrated ability to network with new stakeholders and collaborate effectively across
teams.

Work arrangement
Yes