High-Speed IO (HSIO) Serdes Validation Engineer

ScaleFlux, Inc.; Milpitas (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

ScaleFlux, Inc. is seeking a High-Speed IO Serdes Validation Engineer in Milpitas, CA. You will own HSIO validation, characterization, and mass production readiness, working hands-on with leadership to ensure quality and process excellence.

You will collaborate with top engineers to validate PCIe, DDR4/DDR5 memory interfaces and develop automated data collection and analysis scripts. On-site work is required in a fast-growing storage and analytics environment.

Qualifications

• BS or MS in Electrical Engineering or related field.
• 5+ years of hands-on bench validation in semiconductor or system environments.
• Proven PCIE Gen1-6 and LP/DDR4/DDR5 memory interface experience.
• Proficient in Python for validation, automation, and data analysis.
• Strong understanding of electrical, signal, and power integrity.
• Experience with ATE or system-level testing is a plus.
• Excellent communication and cross-functional collaboration.

Responsibilities

• Bench validation, electrical characterization, and interoperability of high-performance memory controller chips.
• PCIe PHY high-speed interface testing and characterization.
• DDR4/DDR5 memory characterization, link training, and performance validation.
• Set up and use HS scope, BERT, and Logic Analyzer for validation.
• Define and execute test methodologies to validate silicon designs against specifications.
• Develop and refine validation methodologies to improve design coverage and time-to-market.
• Collaborate with Design, Architecture, Verification, HW, SW, and Operations teams to root cause issues.
• Contribute to project planning, budgeting, and resource allocation.

Skills

Bench validation

PCIe testing

DDR4/DDR5

Python scripting

Signal integrity

Lab tools

Test automation

Cross-functional teamwork

Test planning

Education

Electrical Engineering degree

Tools

BERT

Logic Analyzer

Oscilloscope

Test equipment

Job description

ScaleFlux is looking for the High-Speed IO (HSIO) Serdes Validation Engineer. You will be part of a fast-growing, next-generation storage company shaping AI and real-time analytics infrastructure. This is a great opportunity to work on cutting-edge NVMe and computational storage technologies with top enterprise and OEM customers. In this role, you will have direct visibility with leadership to drive processes and quality for HSIO validation, characterization, and mass production. In this role, you’ll collaborate with some of the industry’s top engineers and innovators to develop products that make data faster, more efficient, and more secure. This is a hands-on technical role that requires engineers to be on-site. For detailed information about us visit the company website: www.scaleflux.com

Key Responsibilities and Required Skill Set

• Bench validation, electrical characterization, and interoperability of high-performance memory controller chips
• Experience with PCIe PHY high-speed interface testing and characterization
• Experience with DDR4/DDR5 memory characterization, link training, and performance validation
• In-depth understanding of PHY design, architecture, adaptations, and equalization techniques including process/voltage/temperature sensitivity for HSIO
• Strong Python coding skills – must be capable of developing scripts for automation, data collection, analysis, and access to lab tools
• Solid understanding of signal integrity, power integrity, and PCI/DDR Standard based compliance testing
• Hands on experience to set up and use HS scope, BERT, and Logic Analyzer
• Collaborate with Design, Architecture, Verification, HW, SW, and Operations teams to root cause issues
• Develop and continuously refine validation methodologies, improving design coverage, efficiency, and time-to-market
• Collaborate with internal and external partners for test equipment sourcing
• Define and execute test methodologies to validate silicon designs against specifications, develop test plans and reports
• Contribute to project planning, budgeting, and resource allocation

Qualifications & Experience

• B.S. or M.S. in Electrical Engineering or related field
• 5+ years of hands-on bench validation experience in semiconductor or system-level environments
• Proven experience with PCIE Gen1-6, LP/DDR4/DDR5 memory interfaces and processor/memory system architectures
• Demonstrated proficiency in Python scripting for validation, automation, and data analysis
• Strong understanding of electrical characterization, signal integrity, and power integrity
• Experience with ATE or system-level testing is a plus
• Excellent communication, organizational, and cross-functional collaboration skills

Technical & Soft Skills

• Semiconductor Fundamentals: Comprehensive knowledge of IC design, characterization. high-speed IOs, and analog/mixed-signal circuit behavior.
• Strategic Communication: Ability to translate complex technical concepts into clear business value for executive-level presentations and customer engagement.
• Operational Agility: A proactive self-starter comfortable in fast-paced, high-growth environments; willing to travel as required