Yu-Jun Wen (Wen)

AI Engineer | Data Scientist | Data Engineer | Backend Engineer

Email: [email protected]

LinkedIn | GitHub | Blog (New) | Blog(96 articles, 79K+ page views)


Skills

Languages Python, Go, SQL

LLM Engineering RAG Systems, Prompt Engineering, LLM Evaluation, LangChain, LangGraph, LangFuse

Machine Learning PyTorch, TensorFlow/Keras, Anomaly Detection

Backend Systems FastAPI, Gin, API Design (REST, OpenAPI)

Data Systems PySpark, PostgreSQL, Data Processing Pipelines

Cloud & DevOps AWS (EKS, Lambda, S3, SQS, Athena), Kubernetes, Docker, Terraform, CI/CD


Work Experience

Trend Micro | Senior Backend Engineer (Feb 2025 – Present)

Team & Collaboration: Work within a 5–6 person sprint team, mentor 1 junior engineer on service design and deployment best practices, and conduct cross-team code reviews to maintain code quality standards.

Technical Delivery: Independently architected and delivered 4 microservices for an automated analysis platform from scratch, covering LLM integration (Azure OpenAI), infrastructure as code (Terraform + Helm), and end-to-end CI/CD (GitHub Actions).

Business Impact: Platform went live and reduced operational overhead — tasks that previously required 5–6 people to handle can now be managed by 1–2 people, significantly improving team efficiency and response time.

Trend Micro | Backend Engineer (Oct 2022 – Feb 2025)