Senior/ Staff Package Design Engineer

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 . Role Overview Astera Labs is establishing a strategic R&D center in Israel to drive the development of complex semiconductor chips that solve the critical 'data bottlenecks' enabling the future of AI at scale. As we expand our presence in Israel, we're seeking a visionary Package Design Engineer to help build our local engineering powerhouse from the ground up. This is a unique opportunity to take on meaningful product ownership in a new site, Driving the physical implementation strategy for chips that power the world's largest AI clusters. As a Package Design Engineer, you will be a core technical contributor in the development of advanced IC packaging solutions for high-performance connectivity silicon. You will execute the package flow, design, and qualification from concept through production, working closely with silicon, signal integrity, power integrity, mechanical, manufacturing, and external OSAT partners. You will be responsible for implementing package technologies that meet aggressive electrical, thermal, mechanical, and cost targets, enabling Astera Labs’ products to operate reliably in the world’s most demanding AI and cloud environments. Key Responsibilities Execute end-to-end IC package design, from early feasibility and detailed design through to qualification and high-volume manufacturing Implement package architecture and utilize advanced technologies (organic substrates, advanced laminate, interposers, multi-die/chiplet packaging, CoWoS - 2.5D/3D integration) Drive signal integrity (SI), power integrity (PI), and thermal considerations at the package level for high-speed, high-power devices Perform package layout, substrate routing, bump/ball maps, stack-ups, materials selection, and apply mechanical constraints Collaborate closely with silicon design, SerDes, system, SI/PI, and reliability teams to optimize overall product performance Interface directly with OSATs, substrate vendors, and manufacturing partners to ensure design-for-manufacturability (DFM), yield, and cost targets are met Conduct package-related risk assessments, failure analysis, and corrective actions during bring-up and production ramp Support NPI, qualification, and product sustainment activities, including vendor technical reviews Basic Qualifications 5+ years of hands-on IC package design experience for high-performance semiconductor products, with full technical ownership from concept through tape-out Expert proficiency in IC package design tools (Cadence APD / SiP or equivalent) and hands-on experience designing complex packages (BGA, FCBGA, FCCSP) Strong package integration expertise, including stack-ups, ball/bump maps, constraints, SMT integration, and package BOM ownership Deep understanding of signal, power, and thermal integrity at the package level, with the ability to execute design tradeoffs based on analysis Proven manufacturing and release experience, including running DRC/LVS/DFM, OSAT engagement, and delivering production-ready package designs Preferred Qualifications Experience with AI, networking, PCIe, CXL, or other high-speed data center interfaces Familiarity with package reliability standards and qualification (JEDEC, IPC, thermal cycling, HTOL, etc.) Experience supporting chiplet-based architectures and heterogeneous integration Demonstrated track record of complete technical package ownership on high-volume products 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.