Praveen Radhakrishnan

• A/B prompt testing across frontier models, scoring reasoning and behaviour against detailed rubrics.
• Reviewing scored evaluations for correctness and consistency of application.

AI platforms for government child welfare agencies

• Architected a multimodal Azure OpenAI case note summarisation system end to end, design through production. Text, audio and image through blob storage.
• Implemented the evaluation framework measuring faithfulness, answer relevancy and contextual precision, with evaluation datasets and a metrics framework for model performance monitoring.
• Designed the monitoring and observability layer tracking API latency, token usage and content filtering hits.
• Architected a live call centre intelligence platform using streaming transcription on Azure Communication Services, with event driven processing via SignalR and Event Grid under 500ms, a vector embeddings pipeline for RAG and a Neo4j graph for network analysis.
• Embedded with the government engineering team, working within enterprise security constraints, legacy data infrastructure and compliance requirements.

Australia's largest superannuation administration platform

• Cut a critical SQL Server batch from four hours to 45 minutes.
• Built a data quality framework catching anomalies before production, and automated reconciliation across 100M+ monthly transactions.
• Built Power BI pipelines for APRA regulatory reporting, and incremental loading patterns to cut transfer volumes.

10TB+ daily for 1.7M customers

• Built Databricks Delta Lake pipelines on a bronze/silver/gold medallion architecture in PySpark and Spark SQL.
• Tuned performance with adaptive query execution and partition strategy, and replaced a legacy Oracle Data Integrator estate with a Python ETL framework.
• Migrated an on premises Oracle warehouse to AWS Redshift.

Big Four bank, billions in daily transactions

• Designed live ingestion of call centre events, and an AWS data lake on S3, Glue and Athena for unstructured analysis.
• Implemented change data capture for continuous warehouse updates, and dimensional models supporting 50+ executive KPIs.
• Established data governance practices for Open Banking compliance.

• Built an enterprise operational data store integrating 25+ source systems, led a Denodo data virtualisation rollout, and developed 500+ Informatica mappings with continuous CDC via PowerExchange.
• Delivered master data management, a SAP migration across 900+ retail sites, and an AS/400 to SQL Server modernisation.
• Led data engineering teams of up to 30 across onshore and offshore.