_

Abacus Inc. — Taipei, Taiwan

• Built a demand-planning AI agent platform from the ground up with FastAPI, SQLAlchemy, and React, including RAG chat, goal-to-plan orchestration, persistent conversations, episodic memory, user modeling, and metacognition
• Generated 1,000+ structured Markdown documents with source provenance from the production codebase and indexed them with pgvector for a privilege-aware, multi-turn RAG assistant with non-invention guardrails
• Designed an agentic forecast-review framework separating deterministic signal detection from LLM judgment through read-only evidence tools, controlled options, schema-validated outputs, and final human approval
• Implemented human-in-the-loop ingestion for sales history and PDF/Excel promotion schedules with cell-level traceability, editable confirmation, and MAD-based anomaly classification
• Shipped 95 merged MRs across the Java/Spring and React/TypeScript production platform, built authenticated Java-to-Python integration and PostgreSQL-backed CI, and packaged a Claude Code plugin adopted by the team

Galaxy Software Services — Taipei, Taiwan

• Delivered 10+ production features and resolved 30+ bugs for the R.A.D.A.R enterprise HRMS within 98 workdays, including an overtime redesign that reduced payroll processing from a 45-minute timeout to 90 seconds
• Diagnosed a payroll bottleneck affecting 5,000+ employees using execution plans and replaced AI-generated N+1 queries and temporary-table generation with optimized CTEs and indexed joins
• Architected cross-company HR data integration with .NET MVC and T-SQL batch processing while maintaining full-stack ownership of personnel, scheduling, attendance, approval, and payroll modules
• Collaborated across teams using TypeScript, Angular, and T-SQL with Agile methodology and Git Flow