Lee Sangheon

Python · FastAPI · LangGraph · RAG · PostgreSQL · Next.js

• -Designed a RAG-based operations copilot prototype for retrieving FAB/OSAT operating documents, issue records, and test-data metadata
• -Built an agent workflow with role-aware query routing, source-grounded answers, and uncertainty surfacing

Python · PyTorch · scikit-learn · DuckDB · Recharts · TypeScript

• -Designed a time-series feature pipeline combining EDS test logs and process events to detect yield anomalies
• -Created explainable analysis views for engineers to review candidate causes, impact scope, and follow-up actions

Next.js · React · TypeScript · Tailwind CSS · LLM APIs

• -Implemented a portfolio system that generates web resumes, print-ready PDF pages, and role-specific summaries from structured career data
• -Applied an ATS-friendly section structure and a developer profile layout centered on GitHub and website links

• -Serve as a Technical Leader in Samsung Electronics' semiconductor division, leading strategy, architecture, and implementation of AX-driven global semiconductor production systems connecting FAB partners including UMC and GlobalFoundries, OSAT partners including Chipbond and ASE, and customers including Apple
• -Designed and governed AI-powered enterprise operational systems for full production lifecycle workflows from wafer fabrication and outsourced assembly/test to customer delivery
• -Architected and deployed EDS test integration with AX-enhanced data pipelines for automated test data collection, AI-driven yield monitoring, and real-time process feedback across FAB and OSAT sites
• -Built and operationalized PMO and Global R&D Lab Management Systems to standardize project governance, overseas research operations, and cross-site program tracking

• -Led planning, architecture design, and implementation of a global wafer outsourcing operation system for external fab coordination across worldwide semiconductor production networks
• -Designed scalable enterprise architecture for multi-site wafer outsourcing workflows, integrating order management, production tracking, and quality control across global supply chain partners
• -Established standardized operational protocols and system interfaces to ensure interoperability between internal fab systems and external foundry partners

• -Architected and established a Semiconductor SW Quality Evaluation Framework, defining assessment criteria, defect classification standards, and process compliance metrics across the production lifecycle
• -Designed and implemented an ML-based measurement system that analyzes JIRA issue patterns and semantics, feeding actionable quality insights into the SW quality measurement framework

• -Served as a certified ASPICE Auditor, leading process assessments and compliance evaluations for software development lifecycle alignment with Automotive SPICE standards
• -Partnered with BMW and Volkswagen on ASPICE-based process improvements, supplier audit support, and quality benchmarks for joint development programs

• -Pioneered the first SoC-level implementation of Android Treble, decoupling the OS framework from vendor HAL via HIDL to reduce upgrade cycles
• -Built Go-based kernel testing frameworks, automating regression testing across SoC hardware variants to accelerate release qualification

• -Completed intensive training in embedded software development for Samsung Electronics' semiconductor division
• -Studied C/C++ programming, data structures, algorithms, operating systems, and software engineering fundamentals
• -Developed embedded systems skills across hardware-software interfaces, device control, debugging, and system-level programming