Derek Chen

Client: Australian Bureau of Statistics (ABS) – Big Data Timely Insights Program, and Post Enumerations Survey (PES) for Census 2026

• Developed time-series seasonal adjustment API application using Python and Java, integrated within an AWS ecosystem.
• Automated complex StepFunction workflows that reduces manual intervention.
• Developed Full-Stack web application and queries against Oracle database.

Client: The Australian Taxation Office - Smarter Data Program

• Designed and implemented AI/ML models and algorithms for the Advanced Analysis Platform - Smarter Data Program, including the machine learning feature store, and Kubeflow for automated model training pipeline.
• Collaborated with data scientists and business stakeholders to define requirements, deliver Python FastAPI solutions to securely integrate analytical results into enterprise applications via GCP Apigee gateway.
• Core developer for the Nuvento AI Platform, designed and optimised a production-grade RAG (Retrieval-Augmented Generation) pipeline, utilising Ollama with models like llama3.1/3.3 and Mistral, and integrating embedding models for document chunking and vectorisation.
• Implemented software containerisation, helm-charts, and GitOps for the deployment on AWS EKS.

Client: Bureau of Meteorology, the Department of Environment

• Designed and developed the online Data Management and Governance Platform.
• Led the design of a AWS serverless applications
• Led the full-stack web development.
• Led the ETL data processing pipelines.
• Developed ApacheSpark application using AWS Glue.
• Developed Analytical data stream and processing pipelines using Apache Kafka and Apache Nifi.