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Micron Technology

Makes memory and storage chips for AI and PCs

Semiconductor Principal Design Engineer

Silicon & ASIC DesignConfirmed live in the last 24 hours
Full-timeTokyo, JapanNo salary listedIn-person

About the Job

Requirements

  • A Bachelor of Science or Master of Science in Electrical Engineering and 8+ years of relevant experience in memory circuit design, preferably in DRAM, NAND, or other high-density memory technologies.
  • Experience with Through-Silicon Via interface circuit design or high-speed memory interface design, including NV-LPDDR4, DDR4/5, LPDDR5/6, or HBM3/3E/4, as well as timing analysis, parasitic modeling, and signal integrity.
  • Advanced knowledge and understanding of highly parallel bus performance, power, and area optimization, including clock distribution and skew management across wide data paths, and Energy per Bit optimization in 3D-stacked memory architectures.
  • Experience managing complex circuit design projects spanning multiple functional blocks and cross-functional teams, and communicating design trade-offs, schedule progress, and technical outcomes to design and non-design stakeholders.
  • Ability to apply artificial intelligence to daily and design work flows to improve quality and efficiency.

Responsibilities

  • Design and optimize Through-Silicon Via interface circuits connecting memory die to logic die, including receiver/transmitter circuits for internal TSV channels, impedance matching, and timing margin analysis.
  • Develop and characterize TSV electrical models and define circuit design constraints for the datapath interface.
  • Define and implement signal integrity requirements for the TSV channel, including eye margin, crosstalk, and noise budget analysis.
  • Define and implement power integrity requirements using TSV for highly parallel input/output and array operations.
  • Design and verify TSV-specific Design for Testability circuits, including loopback test modes, TSV continuity checks, and lane redundancy/remapping logic.
  • Interface with process technology and DTCO teams to optimize TSV design rules, standard cell usage, and layout strategies for the internal datapath.
  • Develop and execute a functional verification plan for the TSV interface and internal parallel bus, including full-chip circuit simulation and Verilog regression.
  • Design and optimize the wide internal parallel data bus spanning multiple arrays, channels, and pseudo-channels, ensuring timing closure and signal integrity across the full parallel bus.
  • Architect the datapath from the page buffer through the data line sense amplifier, redundancy logic, and bus driver to the TSV output interface, managing parallelism across bank groups and banks.
  • Develop clocking and synchronization strategies for the highly parallel internal bus, including wave pipeline design, clock distribution, and skew management.
  • Implement and optimize column redundancy and lane repair schemes compatible with highly parallel HBM-like bus architecture.
  • Define timing budgets and perform timing analysis across the full internal datapath under process, voltage, and temperature variations.
  • Support post-silicon validation, debugging, and correlation activities; identify schematic edits and drive necessary tape-out revisions.
  • Collaborate with packaging and assembly teams to ensure TSV reliability constraints are met within the datapath floorplan.
  • Communicate with project integration and other functional design teams about specifications of major block interfaces.
  • Communicate with PE to drive silicon experiments and propose fixes and improvements for yield improvement and silicon debugging.
  • Communicate with Apps regarding the introduction of new specifications and limitations based on design requirements and limitations.
  • Document and review final results with experts and stakeholders.

Desired Qualifications

  • Preferred experience in DRAM, NAND, or other high-density memory technologies.
  • Hands-on experience using artificial intelligence to improve design quality and efficiency.
  • Experience with chip-level power delivery network optimization.
  • Comprehensive understanding of CMOS devices and device reliability.
  • Comprehensive understanding of CMOS BSIM models and CMOS targets for high-speed input/output operation.
  • Experience with signal and power integrity, power delivery network design, and physical design.

About the Company

Micron Technology

Makes memory and storage chips for AI and PCs

Micron Technology designs and manufactures memory and storage chips, mainly DRAM and NAND flash, used in data centers, PCs, phones, cars and industrial equipment. It is one of only three companies that make HBM, the stacked high-bandwidth memory placed beside processors in AI servers, and it is the largest memory chipmaker based in the United States. Unlike chip designers that outsource production, Micron runs its own fabs and assembly sites in the United States and across Asia. It earns money by selling chips, memory modules and solid-state drives to cloud providers, device makers and distributors. Micron was founded in 1978 and is headquartered in Boise, Idaho.

Company size
10,001+
Company stage
IPO
Headquarters
Boise, ID
Founded
1978

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