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BackEnd (Physical design) Engineer

Retym, Inc

Retym, Inc

Software Engineering, Design
Ramat Gan, Israel · Israel · Tel Aviv-Yafo, Israel · Washington, DC, USA
Posted on Mar 19, 2026
For an exciting well-funded start-up, we are looking for a Backend Team member.

You will work on complex design, high frequency and low-power budget. Work on ramp-up full RTL2GDSII flow for leading technology and work with external vendors.

Requirements:

Key responsibilities:

  • RTL-to-GDSII Ownership: execute the complete backend implementation flow (Logic Synthesis, P&R, Tape-Out, IR-drop, etc.), ensuring timely, first-pass silicon success.
  • Constraints & Timing Closure: Work with design and DFT engineers to write timing and physical constraints, and sign-off on the design using comprehensive Static

Timing Analysis (STA), timing eco implementation.

  • Advanced Physical Implementation: Drive complex physical design tasks including Floorplanning, Power/Ground (PG) Mesh implementation, and handling advanced

clocking (CTS/Clock-Mesh) and Hierarchical Design flows.

  • Low Power Expertise: Define, implement, and verify advanced low power design techniques to meet aggressive power consumption targets.
  • Design for Manufacturability: Implement and verify Design-for-Test (DFT) strategies and close physical verification challenges, specifically focusing on IR-Drop

analysis.

  • IP Integration & Automation: Execute complex IP integration, incorporating blocks generated by memory compilers and other automated tools.
  • Collaboration: work closely with design team to understand the data path and correctly implement the floorplan, provide feedback on RTL changes required, Implement logical eco post RTL freeze with design team.
  • CAD: Improve existing implementation flows to achieve better QOR, write scripts for supporting the P&R flows.

Minimum Qualifications

  • Experience of 5+ years in backend design
  • Strong expertise of full RTL2GDSII including:
  • Logic synthesis & equivalence checking
  • Constraints definition and writing
  • Complicated IP integration
  • Memory compilers and other automated block generators
  • DFT
  • Floorplanning, PG Mesh
  • P&R
  • Low power design including definition, implementation and verification
  • Timing STA
  • IR-Drop
  • BS/MS in EE/CE from lead universities

Preferred Qualifications

  • Team player
  • Highly motivated
  • Learning abilities
  • Good communication
  • Work with external vendors
  • Experience in Synopsys/Cadence tools is an advantage
  • Low power techniques
  • Clock-mesh/ multi source cts
  • Hierarchical design flow
  • Experience in tape-out procedures
  • RTL code reading

A very interesting job and good conditions are guaranteed to the candidates