Kforce's client, a growing and established engineering technology company is seeking a couple of Principal Signal & Power Integrity Engineers (SI/PI) in Phoenix, AZ. The candidate must reside in the Phoenix, AZ metro area for this position. The client will provide a relocation package for out of state candidates. Summary: We are working directly with the Hiring Manager on this search assignment. We have been working with this client for several years and have made numerous placements. We are seeking someone with a strong experience in signal and power integrity related to semiconductor IC package design or similar. This position is hybrid remote (3 days in office & 2 days from home). Responsibilities: * As a Principal Signal & Power Integrity Engineer (SI/PI), you will work with IC package design engineers to provide design solutions for high-speed and low speed signals, clocks, power delivery signals, and power and ground planes * Provide routing guidelines for high-speed, low-speed, power signals, power, and ground planes from bumps to balls * Work with customers, package design engineers, simulation engineers, R&D, and assembly * Provide package layer counts, stack ups, materials, impedance control, test impedance targets, and optimizing net assignments for signals * Principal Engineers will perform SIPI simulation/optimization to make sure signals meet required specifications * Signal integrity analysis of frequency and time domain simulations for high-speed signals and low speed signals following specifications * Optimize single ended or differential Insertion loss, return loss, X-talk, & power sum X-talk for differential signaling groups and protocols * IR_DROP simulation for the power rails from bumps to balls * AC frequency sweep simulation to optimize the high RLC traces to the lower by achieving low resistance & inductance traces * Power plane resonance to measure the resonances of the package plans