Senior IC Packaging Engineer (San Jose)

Company DescriptionAxiado is building the future of AI powered digital infrastructure. We are a fast-growing, well funded silicon, systems, and solutions company pioneering a new category of semiconductor called the Trusted Control/Compute Unit (TCU) that combines advanced hardware security, AI driven resilience and efficiency, and real-time platform management. Our technology protects the world’s most critical infrastructure—from data centers to next generation cloud and AI platforms—by securing systems at the foundation levels of hardware, independent of host CPUs and operating systems. Founded in 2019 and now over 150 employees are strong, Axiado has evolved into a recognized leader in the convergence of AI, security, and silicon innovation. We partner with and are actively engaged in commercial programs with multiple Tier 1 industry leaders, validating both our technology and our long-term market trajectory. Axiado has also won numerous industry awards for our ground-breaking products and technological innovations, including being named one of Fast Company’s 2025 Top 10 Most Innovative Companies in Security, winning the 2025 Global InfoSec Award for Outstanding AI Security Solution, and being named a finalist for the Global Semiconductor Alliance’s 2025 “Start-Up to Watch” award. At Axiado, developing breakthrough technology takes more than great engineering—it takes a team of exceptional people who collaborate boldly, challenge assumptions, and take pride in building what comes next. We value curiosity, execution, respect, and a shared desire to make a meaningful impact on the security and reliability of the digital world. If you’re driven to innovate, energized by hard problems, and excited to help define the future of secure AI infrastructure, we invite you to apply and join us on this journey. Job DescriptionAxiado Corporation is seeking a Senior IC Packaging Engineer to provide technical leadership and architectural ownership of advanced IC and System-in-package(SiP) in a fast-growing startup environment. This role is designed for a senior technologist who combines deep hands-on expertise with system-level thinking, and who thrives in high-ambiguity, high-impact settings.You will define and drive high-performance, low-power packaging architectures spanning 2D and RDL based fan-out (2.5D), chiplet-based designs, and heterogeneous integration, leading efforts from early technology path finding through production ramp. You will work closely with foundries, OSATs, substrate suppliers, and internal cross-functional teams to shape both product execution and long-term packaging strategy. Key ResponsibilitiesServe as technical authority for IC and SiP packaging across multiple products and programs.Own package architecture and technology roadmap, aligned with product, cost, and scalability goals.Lead chiplet-based packaging strategies, including UCIe, silicon interposers, and advanced RDL.Perform and guide hands-on package design and physical layout, including critical structures for High-speed SerDes/PHY (PCIe, CXL), LPDDR5, UCIe, and Other multi-gigabit interfaces.Define substrate stack-ups, materials, bump/RDL architectures, and DFM guidelines for advanced nodes.Drive SI/PI, thermal, mechanical, and reliability trade-offs at the system and package levels.Lead external engagement with OSATs, foundries, and key suppliers for technology development and manufacturing readiness.Influence product roadmap, risk management, and investment decisions through technical insight.Establish scalable design methodologies, best practices, and reusable packaging flows.QualificationsBSEE or MSEE (PhD a plus) in Electrical Engineering, or related field.Minimum of 10+ years of experience with extensive IC packaging expertise for SoCs, ASICs, or memory products.Deep hands-on expertise in Flip-Chip BGA (FCBGA) and System-in-Package (SiP), RDL, silicon interposers, and chiplet architectures (UCIe)Strong understanding of electrical, mechanical, thermal, and reliability design trade-offs, Advanced packaging materials and substrate technologies, Design-for-Manufacturing (DFM) and yield optimizationDemonstrated ability to operate autonomously, make high-impact decisions, and execute in a startup environment. Required ExperienceTechnical leadership of multiple end-to-end packaging programs, from early architecture through high-volume production.Proven experience with high-speed SerDes package development, including PCIe Gen5, LPDDR5 / LPDDR5X, USB 3.x or 10G interfacesExperience defining die-to-die and chiplet based RDL/bump architecture.Direct collaboration with OSATs, foundries, and substrate suppliers for co-development and ramp.Strong cross-functional leadership across design, product, test, operations, reliability, and customer teams.Clear understanding of cost, yield, schedule, and risk trade-offs at a product and portfolio level. Tools & Preferred SkillsCadence Allegro Package Designer (APD) or equivalent EDA tools.Strong background in flip-chip BGA package design and layout.SI/PI expertise preferred, including S-parameter extraction and PDN optimization using HFSS, SIwave, or Ansys Designer.Experience building new packaging methodologies or platforms from scratch.Additional InformationAxiado is committed to attracting, developing, and retaining the highest caliber talent in a diverse and multifaceted environment. We are headquartered in the heart of Silicon Valley, with access to the world's leading research, technology and talent.We are building an exceptional team to secure every node on the internet. For us, solving real-world problems takes precedence over purely theoretical problems. As a result, we prefer individuals with persistence, intelligence and high curiosity over pedigree alone. Working hard and smart, continuous learning and mutual support are all part of who we are.Axiado is an Equal Opportunity Employer. Axiado does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis covered by appropriate law. All employment is decided on the basis of qualifications, merit, and business need.SummaryType: Full-timeFunction: EngineeringExperience level: Mid-Senior LevelIndustry: Semiconductors