Applications Engineer - DDR & High-Speed IO

Lattice Semiconductor; United States; On-site; USD 120,000 - 170,000; Full time

Job summary

Lattice Semiconductor is seeking an Application Engineer for DDR technologies in the United States. You will provide design‑in support for DDR4/DDR5/LPDDR, high‑speed interfaces, and related HSIO systems, working with customers to optimize configurations and signal integrity.

You will analyze issues with oscilloscopes, protocol analyzers, and BERTs, and communicate root causes and corrective actions. Collaboration with FAE, sales, and marketing teams will shape product directions and best

Qualifications

• Solid understanding of DDR memory architectures and protocols (DDR4/DDR5 and/or LPDDR).
• Hands on experience supporting silicon products (SoCs, PHYs, controllers, memory interfaces).
• Strong knowledge of High Speed Serial and Parallel IO fundamentals, including: SI, timing, jitter, noise, and PI, Eye diagrams, timing budgets, and channel modeling
• Experience with high speed lab equipment (oscilloscopes, protocol analyzers, BERTs).
• Familiarity with PCB design considerations for high speed interfaces (stack ups, routing, termination).
• Ability to explain complex technical topics clearly to both technical and non technical audiences.
• Strong problem solving and analytical mindset.
• Familiarity with memory training, calibration flows, and PHY tuning.

Responsibilities

• As an Application Engineer, provide applications support for DDR (e.g., DDR4 / DDR5 / LPDDR, High‑Speed IOs, and interfaces (e.g., PCIe, SerDes, Ethernet).
• Support customer design‑ins, including interface configuration, signal integrity guidance, board‑level considerations, and system optimization.
• Analyze issues using oscilloscopes, logic analyzers, protocol analyzers, and BERTs; provide clear root cause and corrective action plans.
• Provide customer feedback to internal teams to influence product requirements, feature prioritization, and roadmap decisions.
• Support FAE, sales, and marketing teams with technical guidance, value propositions, and contribute to best practices for DDR and HSIO system design and debug.
• Stay current on JEDEC standards, protocol specifications, and industry trends related to memory and high‑speed interfaces.

Skills

DDR4/DDR5

High-Speed IO

PCB layout

Signal integrity

Lab instrumentation

Effective communication

Tools

Oscilloscopes

Protocol analyzers

BERTs

Job description

Lattice Semiconductor is seeking an Application Engineer for DDR technologies in the United States. You will provide design‑in support for DDR4/DDR5/LPDDR, high‑speed interfaces, and related HSIO systems, working with customers to optimize configurations and signal integrity.

You will analyze issues with oscilloscopes, protocol analyzers, and BERTs, and communicate root causes and corrective actions. Collaboration with FAE, sales, and marketing teams will shape product directions and best