Principal Memory Architect

Key Responsibilities:

1. Define the overall 3D-NAND memory architecture , including array organization (Plane/Bank/Page/Block structure), word line/bit line layout, shared resource strategies, etc.
2. Lead architecture feasibility studies, technical risk assessments, and roadmap planning, promoting IP reuse, scalability design, and future technology node evolution.
3. Design and optimize Program/erase/read algorithms , balancing speed, endurance, data retention, and interference management (such as read disturbances and program disturbances ).
4. Develop ECC (Error Correction Code) strategies and integration solutions, evaluating the impact of BCH, LDPC(hardware decoding/software decoding), and other solutions on area, latency, power consumption, and error correction capabilities.
5. Define page and block management level logic, supporting advanced functions such as copy-back, multi-plane operation, suspend/resume, and background erase.
6. Manage the balance of performance(throughput/latency), area (die size), power consumption (active/standby power), and reliability (P/E cycles, data retention) to support product positioning (consumer/enterprise/automotive grade);
7. Collaborate closely with device/process teams to optimize circuit and algorithm designs based on actual 3D stacked structures (such as CT/FG charge trapping, vertical channels, word line stacking layers);
8. Participate in the selection and customization of ONFI/Toggle Mode interface protocols , defining register mappings, command set extensions, and low-power modes;
9. Coordinate cross-team (circuit, device, testing, product) technical reviews, and formulate architecture design specifications and simulation verification standards;
10. Support post-silicon verification, yield analysis, and customer problem-solving, optimizing architecture design in a closed-loop manner.

Required Qualifications:

1. Education:  Master's degree or above (PhD preferred) in Microelectronics and Integrated Circuits, Electrical Engineering, Computer Engineering, or related fields.
2. Other Requirements:

• 8+ years of Flash memory development experience, including at least 5 years as architecture or key technology lead;
• Proficient in 3D-NAND physical structure and operation mechanisms, with in-depth understanding of charge trapping (CT) or floating gate (FG) technologies, vertical channel, word line stacking, crosstalk, and other characteristics;
• Familiar with TLC/QLC/PLC multi-bit memory mechanisms and their challenges to read/write algorithms, ECC, and wear leveling;
• Familiar with mainstream interface protocols such as ONFI 4.x / Toggle 3.0;
• Excellent systems thinking and cross-domain integration capabilities, able to efficiently coordinate circuit, device, firmware, verification, testing, and product teams;
• Excellent technical documentation writing and technical decision-making communication skills;
• Ability to track cutting-edge industry technologies (such as HBM-NAND hybrid storage and in-memory computing architecture) and drive architectural innovation and patent portfolio development;
• Complete NAND architecture delivery experience, successfully mass-produced 64-layer or higher 3D-NAND products is a plus;
• In-depth understanding of the ECC architecture (BCH/LDPC) and NAND controller collaboration mechanism is preferred;
• Familiarity with the impact of reliability modeling under advanced processes (such as TDDB, HCI, RTN) on the architecture;
• Publication of NAND-related papers at international conferences (such as ISSCC, VLSI, IMW) is a plus.