Senior Substrate Layout Design engineer

Piper Companies is seeking a Senior Substrate Layout Designer who will be responsible for leading the design of advanced multi-die substrate packages. The layout designer will be onsite 5 days a week in Saratoga, CA or remote working Pacific coast time hours.

• Lead the end-to-end physical layout of high-density, multi-die substrate design.
• Design and optimize bump maps, breakout routing, via structures, and layer stack-ups.
• Collaborate with ASIC, signal integrity, and power teams to ensure clean escape routing and breakout strategies.
• Evaluate routing feasibility in co-design environments, considering die floor plans and mechanical constraints.
• Drive DRC, DFM, and manufacturing rule checks to ensure fabrication readiness.
• Interface with substrate vendors and OSATs for tape‑out and manufacturability validation.
• Conduct technical reviews and iterate on layout improvements with internal and external stakeholders.

• 6‑8+ years of experience in substrate layout design for high‑performance IC packaging.
• Proven experience in organic substrate design from silicon to BGA.
• Deep understanding of chiplet‑based, multi‑die, and advanced packaging (FPGA, CPU, MCM, CoWoS).
• Strong collaboration skills with ASIC, signal, and power teams.
• Proficiency in Cadence Allegro APD and AutoCAD.
• Experience working with OSATs and substrate supplies.
• Bachelor’s degree in Electrical Engineering or equivalent experience.

• Salary range: $150,000 - $180,000.
• Comprehensive benefits:
  Medical, Dental, Vision, 401k, PTO, holidays, and sick leave as required by law.

‑die packaging, chiplet integration, CoWoS, MCM, BGA, FPGA, CPU, GPU, High‑density interconnect, escape routing, signal integrity, power integrity, organic substrate, substrate tape‑out, substrate DRC, cadence allegro APD, autocad, cadence SiP layout, EDA tools, Layout verification tools, ASIC, OSAT, mechanical co‑design, floor planning, design reviews.

This job is open for applications on 3/2/2026. Applications for this job will be accepted for at least 30 days from the posting date.