Backed by Redpoint.
About the role
We are seeking a Senior Physical Design Engineer to join our silicon design team developing high-performance ASIC using TSMC advance process nodes, including 5nm and 3nm. In this role, you will own physical implementation from RTL to GDSII, drive timing and power closure for ultra-high-speed designs, and work closely with RTL, STA, IP, and verification teams to solve complex implementation challenges unique to advanced-node and high-speed transceiver architectures.
What they're looking for
- Education: Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, or a related field
- Experience: 8+ years of hands-on physical design experience, preferably with advanced technology nodes at 5nm or below
- Physical Design Expertise: Strong experience with floorplanning, placement, CTS, routing, IR drop mitigation, timing closure, and signoff debugging
- Tools and Automation: Hands-on experience with tools such as Synopsys ICC2, RedHawk SC, Cadence Innovus, Voltus, Simens Calibre etc, along with strong scripting skills in Tcl, Python, or Perl
- High-Speed PHY Implementation: Experience with high-speed PHY such as SerDes, UCIe etc physical design implementation
- Advanced-Node Signoff: Familiarity with EM/IR analysis, power grid optimization, congestion analysis, physical verification, and tapeout signoff in advanced semiconductor process nodes
More about this role
At Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing faster, cooler, and massively more efficient.
We’re a well-funded startup backed by Mayfield and led by veterans who’ve built
And scaled some of the most transformative technologies in the industry. This isn’t
incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from
the silicon up. You’ll work alongside a team of world-class engineers solving some of
the hardest challenges in optics, systems, and scale. Every line of code, every design
decision, every breakthrough you help deliver will shape the infrastructure of tomorrow.
If you're looking for mission, momentum, and the chance to make an outsized impact
jump on the rocket ship. We’re just getting started.
We are seeking a Senior Physical Design Engineer to join our silicon design team developing high-performance ASIC using TSMC advance process nodes, including 5nm and 3nm. In this role, you will own physical implementation from RTL to GDSII, drive timing and power closure for...
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