Employment History

SCG Chemicals

Software Engineer, Permanent Employee (Architecture Team)
June 2025 – Ongoing

• Cross-team alignment across business, AI, infra, and development groups to maintain architectural consistency.
• Diagnosed and resolved production issues across deployment pipelines, compute resources, API behavior, and upstream open-source constraints.
• Evaluated and integrated open-source platforms (OpenWebUI, LiteLLM, Airflow, Grafana stack) into production environments with proper system boundaries.
• Designed reproducible, low-cost observability stacks using Grafana and Kubernetes, enabling real telemetry for dev and PoC workloads.
• Consolidated manual Azure DevOps workflows into Git-managed configurations for internal LiteLLM and AI platform deployments, aligning with GitOps principles.
• Performed organization-level code and architecture reviews to ensure system reasoning matches operational reality.

SCG Chemicals

Software Engineer, Permanent Employee (Fullstack, Integration)
June 2024 – June 2025

• Led and built backend system for export document validation — integrated internal OCR-AI to extract and cross-check Bill of Lading data against SQL records, and defined OutSystems API contracts for long-term maintainability.
• Architected and built the core formula system and API services for GHG emissions monitoring — ensured consistency across frontend, backend, and pipelines.
• Configured and deployed Apache Airflow with automated ingestion and monitoring pipelines for GHG emissions data.
• Configured and deployed Apache Superset to deliver self-serve dashboards for GHG monitoring.
• Wrote Dockerfiles and Azure DevOps pipelines to automate build and deploy across services.
• Prototyped agentic AI Computer Use workflows (ChatGPT and Claude) — advised leadership on feasibility and scaling.

Sphere Soft Co., Ltd

Software Developer
June 2023 – April 2024

• Led internal prototypes for reusable fullstack scaffolding — defined architecture, stack decisions, and resolved core system bugs.
• Defined GitHub workflow standards — enforced branching and review practices.
• Rewrote OutSystems modules using optimized Advanced SQL to support complex business logic.
• Delivered client-ready low-code systems: Tax Advisory, Job Tracking, Compliance Tracking, Toyota Kinto Share.

Government Housing Bank

Computer Officer (Permanent Employee)
July 2022 – May 2023

• Diagnosed memory leak in NPA microservice from static variable — causing intermittent JVM crashes.
• Deployed internal ELK APM stack — enabled real-time backend observability.
• Built CI/CD automation with GitLab, Jenkins, Portainer.
• Created Grafana-based reporting pipelines with custom SQL, reducing manual reporting.
• Developed Python reconciliation tool and conducted SQL investigations for high-confidentiality audit cases.
• Supported GHB ALL GEN app (Flutter) — translated NITMX “Request to Pay” spec for testing.