Power Integrity Engineer-Silicon

About this role

Lumilens seeks a senior power integrity engineer to architect robust power delivery systems for advanced 2.5D/3D photonic and AI chip packages. You'll optimize complex PDNs integrating multiple chiplets, photonic ICs, and memory while managing extreme power densities and tight voltage margins critical for next-generation AI infrastructure.

What you'll do

• Design and implement power integrity architectures for heterogeneous 2.5D/3D packages with chiplets, interposers, and multi-rail topologies
• Conduct full-stack power analysis including IR drop, electromigration, PDN impedance, and transient response validation
• Model and simulate power delivery solutions using tools like Ansys SIwave, Cadence Sigrity, and Apache RedHawk
• Lead power integrity co-design with silicon, package, and photonics teams to optimize layouts and voltage regulator placement
• Select and qualify advanced power components (VRMs, capacitors, inductors) and collaborate with foundry partners on manufacturability
• Drive lab validation through high-bandwidth measurements and correlation to simulation for production readiness

What they're looking for

• Power delivery network (PDN) design and optimization
• 2.5D/3D heterogeneous packaging and chiplet integration
• PI simulation tools (Ansys, Cadence Sigrity, Apache RedHawk)
• IR drop and electromigration analysis
• High-speed signal integrity and noise mitigation
• Advanced packaging technologies (CoWoS, hybrid bonding, FOWLP)
• Lab characterization with oscilloscopes and network analyzers
• Cross-functional collaboration and design methodologies