SPE Signal Integrity

Rambus.com; Johns Creek (GA); Hybrid; USD 126,000 - 234,000; Full time

Benefits offered by this job

Bonus

Equity

401(k) match

Employee stock purchase plan

Medical benefits

Dental benefits

Time-off program

Gym membership

Job summary

Rambus is hiring an experienced Sr. Principal Engineer (SPE) for Signal Integrity and package design in Johns Creek, GA. The role reports to the Senior Director of Engineering and is a full-time position within the Memory Interface Chips BU.

You will work in a hybrid environment, spending about three days on-site and two days remote. You will lead SI/PI studies, develop packaging specifications, and collaborate with design, validation, and customers to optimize SI performance for DDR4/DDR5

Qualifications

• MS or PhD in Electrical Engineering with 10+ years of industry experience
• Experience with DDR4/5 and SERDES interfaces
• Solid SI/PI and package design background
• Experience with lab measurements and correlating with simulations
• Proficiency with EDA tools (ADS, HFSS, Q3D/PowerSI)

Responsibilities

• Create SI/PI methodologies and work with Design and SI teams for SI/PI study and package design for the DDR product portfolio
• Define specifications and system design requirements (packaging, PCB routings, decoupling, channel simulations)
• Provide guidelines to design teams based on SI/PI study and silicon correlation
• Collaborate with customers to determine optimum SI/PI solutions
• Support debug and lab Bring-Up as needed

Skills

SI/PI

Package design

DDR4/DDR5 familiarity

High-speed memory / SERDES

Lab measurements

Customer collaboration

Education

MS/PhD in Electrical Engineering

Tools

Spice

ADS

HFSS

Q3D/PowerSI

RedHawk/Totem

Virtuoso

Job description

Overview

Rambus, a premier chip and silicon IP provider, is seeking to hire an exceptional Sr. Principal Engineer with signal integrity and package design experience to join our Memory Interface Chips BU’s engineering team in John's Creek, Georgia. Candidates will be joining some of the brightest inventors and engineers in the world to develop products that make data faster and safer.

As an SPE Signal Integrity Engineer, you will be reporting to the Senior Director of Engineering and is a Full Time position. In this highly visible role, you will work within our SI/PI team to work on modeling, analysis, and simulations of signal integrity (SI) and power integrity (PI) in the very challenging DDR field with speed up to 16000+ MT/s.

Rambus offers a flexible work environment, embracing a hybrid approach for most office-based roles. Employees are encouraged to spend an average of at least three days per week onsite, allowing for two days of remote work.

Responsibilities

• Create SI/PI methodologies and work with the Design and SI teams to do SI/PI study and package design for the latest DDR product portfolio

• Work with our design team and validation team to define specifications and system design requirements such as packaging and PCB routings, IC-PKG-BRD decoupling requirements, channel simulations and jitter sensitivity analysis

• Provide guideline to design team based on SI/PI study and simulation and silicon correlation so that our products will have superior SI performance, i.e. best RMT scores

• Work with our customers to do collaboration to find the optimum SI/PI solution

• Help the team during debug and bring up in lab if needed

Qualifications

• Solid background in SI/PI and package design to provide technical leadership to the team

• Strong interpersonal skill to keep the team motivated and focused

• MS or PhD in Electrical Engineering with 10+ years of industry experience in which at least a few years with exposure to DDR4/5

• Prior experience in simulating high speed memory (DDR4, DDR5) and/or SERDES interfaces is required

• Solid theoretical background and understanding in EM and transmission line theory is a must

• Strong background and solid understanding of equalization techniques such as FIR/FFE/DFE/CTLE are required

• Must understand package and PCB design, be able to edit APD/Allegro layout files. Know SI/PI driven BGA assignment methodology and be able to simulate for the trade-offs in the context of a system

• Extensive experience in correlating simulation results with lab measurements using scopes, TDRs, VNAs etc.

• Strong understanding of the server system, from CPUs to DRAMs on DIMM modules, is highly desirable

• Know the mechanisms of crosstalk and jitter in source-synchronous interfaces and be able to include the effect of such losses into low BER simulations

• Proficient with simulations using Spice and ADS

• Experience with commercial EDA tools such as ADS, HFSS, Q3D/PowerSI

• Familiarity with RedHawk/Totem or XcitePI and Virtuoso is a strong plus

• Lab characterization experience of passive components, link margin, or noise using real time/sampling scopes and VNA/TDR is a big plus

• Basic knowledge of circuits used in high-speed link design is preferred.

• Excellent writing and presentation skills are essential as well as good communication skills to work with customers and cross-functional teams.

• Must be an innovative, self-motivated individual, be able to manage and drive his projects, and must be a team player

About Rambus

Rambus is a global company that makes industry-leading memory interface chips and Silicon IP to advance data center connectivity and solve the bottleneck between memory and processing. With over 30 years of semiconductor experience, we are a leading provider of high-performance products and innovations that maximize the bandwidth, capacity and security for AI and other data-intensive workloads. Our world-class team is the foundation of our company, and our innovative spirit drives us to develop the cutting-edge products and technologies essential for tomorrow’s systems.

Rambus offers a competitive compensation package including base salary, bonus, equity, matching 401(k), employee stock purchase plan, comprehensive medical and dental benefits, time-off program, and gym membership.

The US salary range for this full-time position is $126,100 to $234,100. Our salary ranges are determined by role, level and location. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location and market conditions.

At Rambus, we are committed to fostering a workplace where every individual is respected, supported, and empowered to succeed. We value a range of perspectives and experiences that contribute to innovation and collaboration. Our goal is to ensure that all team members have equitable access to opportunities, resources, and a sense of belonging. We believe that a culture of fairness and inclusion helps us all do our best work.

Rambus is proud to be an Equal Employment Opportunity and Affir…

We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, or other applicable legally protected characteristics.

Rambus is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans during our job application procedures. If you require assistance or an accommodation due to a disability, please feel free to inform us in your application.

Rambus does not accept unsolicited resumes from headhunters, recruitment agencies or fee-based recruitment services.

For more information about Rambus, visit rambus.com. For additional information on life at Rambus and our current openings, check outrambus.com/careers/.

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