Around 5-8 years of minimum exp in Synthesis/Constraints Development and Validation/Timing Closure and Sign-off ( blocks/fullchip) Complete Ownership of Subsystem level STA closure, Includes giving feedback to PnR owner Hands on experience with PrimeTime is must. Good debugging experience on Timing issues and debug the same independently Understanding of timing constraints and constraints related debugging skills Should have worked on lower tech nodes like 7nm , 5nm and below. Understanding of scripting language like tcl, perl etc is added.