Principal Physical Design Engineer

asteralabs; Singapore; On-site; SGD 120,000 - 190,000; Full time

Job summary

Astera Labs in Singapore seeks a seasoned physical design engineer to drive block- and top-level implementation for high-speed designs. You will collaborate with RTL/STA teams, optimize timing, power, and area, and apply sophisticated physical design techniques across multiple voltage/frequency domains.

A strong scripting background and experience with SerDes/PHY IPs are essential. You will contribute to ECO/tapeout signoff and maintain signoff databases using ICC2, Innovus, Calibre, and Voltus.

Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Electronics Engineering, or a related field.
• 5-10 years of experience in physical design, preferably with advanced technology nodes.
• Experience with Floorplanning, placement, CTS, routing, and IR drop mitigation.
• Signoff checks such as DRC, LVS, ANT, and ERC, along with debugging.
• Timing closure support in collaboration with STA teams.
• Hands-on use of tools such as Synopsys ICC2, Cadence Innovus, Calibre, and Voltus.
• Experience integrating high-speed IPs such as SerDes or PHYs into SoC or chiplet-based environments.
• Experience working on high-frequency datapath and DSP-related designs.
• Solid scripting skills for automation and productivity enhancement.

Responsibilities

• Perform block-level and top-level physical implementation including floorplanning, placement, CTS, routing, and physical verification for high-speed designs in advanced technology nodes.
• Collaborate with RTL and STA teams to ensure clean handoffs and support timing, area, and power convergence.
• Apply advanced physical design techniques to support multiple voltage and frequency domains, hierarchical design, and physical-aware synthesis.
• Work on key physical design areas including EM/IR analysis and power grid optimization, congestion analysis and mitigation, clock skew optimization, RC extraction-aware placement and routing.
• Integrate IPs and top-level blocks with attention to physical interfaces, constraints, and timing alignment.
• Support floorplan development and chip partitioning for high-speed transceiver designs.
• Perform ECO implementation and assist with tapeout signoff activities.
• Ensure DRC, LVS, ANT, CELL, and ERC clean databases using industry-standard physical verification tools.
• Use industry-standard tools such as ICC2, Innovus, Voltus, Calibre for implementation and signoff.
• Develop and maintain automation scripts in Tcl, Python, or Perl to improve physical design flows and productivity.

Skills

Floorplanning

Placement

CTS

Routing

IR drop mitigation

Signoff checks

Timing closure

Scripting

Cross-functional teamwork

Problem-solving

Education

Bachelor's or Master's in Electrical/Electronic engineering

Tools

Synopsys ICC2

Cadence Innovus

Calibre

Voltus

Job description

About the Role

Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs' Intelligent Connectivity Platform integrates CXL, Ethernet, NVLink, PCIe, and UALink semiconductor-based technologies with the company's COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity. The company's custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements. Discover more at www.asteralabs.com .

Key Responsibilities

Perform block-level and top-level physical implementation including floorplanning, placement, clock tree synthesis (CTS), routing, and physical verification for high-speed designs in advanced technology nodes.

Collaborate with RTL and STA teams to ensure clean handoffs and support timing, area, and power convergence.

Apply advanced physical design techniques to support multiple voltage and frequency domains, hierarchical design, and physical-aware synthesis.

Work on key physical design areas including:

• EM/IR analysis and power grid optimization
• Congestion analysis and mitigation
• Clock skew optimization and clock quality improvement
• RC extraction-aware placement and routing

Integrate IPs and top-level blocks with attention to physical interfaces, constraints, and timing alignment.

Support floorplan development and chip partitioning for high-speed transceiver designs.

Perform ECO implementation and assist with tapeout signoff activities.

Ensure DRC, LVS, ANT, CELL, and ERC clean databases using industry-standard physical verification tools.

Use industry-standard tools such as ICC2, Innovus, Voltus, RedHawk, and Calibre for implementation and signoff.

Develop and maintain automation scripts in Tcl, Python, or Perl to improve physical design flows and productivity.

Required Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Electronics Engineering, or a related field.
• 5-10 years of experience in physical design, preferably with advanced technology nodes.
• Strong experience with:
  • Floorplanning, placement, CTS, routing, and IR drop mitigation
  • Signoff checks such as DRC, LVS, ANT, and ERC, along with debugging
  • Timing closure support in collaboration with STA teams
  • Hands-on use of tools such as Synopsys ICC2, Cadence Innovus, Calibre, and Voltus
• Experience integrating high-speed IPs such as SerDes or PHYs into SoC or chiplet-based environments.
• Experience working on high-frequency datapath and DSP-related designs.
• Solid scripting skills for automation and productivity enhancement.
• Good problem-solving skills and the ability to work effectively in cross-functional teams.

We know that creativity and innovation happen more often when teams include diverse ideas, backgrounds, and experiences, and we actively encourage everyone with relevant experience to apply, including people of color, LGBTQ+ and non-binary people, veterans, parents, and individuals with disabilities.