Tamizh N

I lead AI, and ML platform engineering for Hong Kong's #1 digital bank — building the GenAI, MLOps, and data infrastructure that powers the organization. - Championed enterprise-wide GenAI adoption, securing buy-in from the CEO, CIO, Legal, Security, and Data Governance to deploy AI responsibly at scale - Built and launched an in-house GenAI assistant on AWS Bedrock with security, privacy, and retention controls baked in, so teams could use AI without compromising compliance - Created a self-service platform where any employee could build their own AI assistant with custom instructions and memory. Over 200 assistants were created organically. - Stood up a dedicated EKS cluster for AI/ML with LLMOps tooling (LLM proxy, observability), improving deployment velocity, security isolation, and per-team cost attribution - Designed an ML platform on AWS SageMaker and embedded MLOps into our SDLC, making model deployment reliable and repeatable - Operated the core Kafka platform for a high-throughput banking system, advising client teams on tuning, DR readiness, and incidents under a single-owner model - Operationalized a foundational AI governance framework by synthesizing HKMA circulars and PCPD guidelines, successfully unblocking all subsequent deployments

I architect cloud platforms and provide technical leadership for engineering teams for a global IT services firm, delivering client-facing data and API solutions and driving new business. - Architected an API-based CRM platform on GCP for a leading international beauty brand, spanning Flask, Cloud Run, Spanner, and global load balancing - Redesigned our DevOps and testing tooling, which directly led to winning a new DevOps services implementation bid - Served as SME and technical lead for AWS data projects across the organization, guiding teams on architecture and delivery - Led and mentored a team of engineers, equipping them with the latest cloud and DevOps skills - Drove business development by identifying opportunities, leading RFIs and RFPs, and running staffing and cost estimations

I led a global team of data engineers and scientists building datalake, clinical analytics capabilities for Cigna International, including an award-winning ML platform for proactive care. - Built a Clinical Risk Prediction Platform that flags members after their first MSK-related claim and predicts the probability of surgery within a year. Won Integrated Insurance Product of the Year at the Insurance Asia Awards 2021. - Coached data scientists in moving from ad-hoc scripts to container-based MLOps with Docker and Kubernetes

I built the data foundation that gave analysts and scientists a single source of truth - spanning two continents, multiple systems and business units - Architected a multi-region Data Lake on AWS spanning Singapore and London, unifying data from SQL Server, NAS, S3, Google Analytics, and Salesforce - Set up event-driven CDC pipelines with Confluent Kafka and S3 Connect for near-real-time data ingestion - Built Python and Spark libraries with AWS Glue for structured and unstructured data extraction and publishing

- Migrated big data workfload from on-premises to AWS which reduced resource contention and consequently accelerated experimentation cycles for data science workflows. - Built stateless ingestion and transformation pipelines using transient EMR clusters, lambda functions and EC2 instances (user-data) - Designed and implemented Datalake on AWS S3 with focus on data access & governance using KMS encryption, object lifecycle policies and retention policies. - Automated machine learning pipelines for a variety of machine learning models ranging from Deep neural networks to decision trees (XGBoost & Random forest) - Extensive automation using Terraform, Ansible and Jenkins to automate all aspects of Data infrastructure and pipelines - Wrote ETL pipelines in Airflow using Big data tools such as Hive, Spark, Sqoop etc.,

- Lead a team of international Engineers and Analysts that takes care of a large scale infrastructure, spread across Hong Kong, Manila, Macau, Cyprus - Conduct technical research on new products and solutions, to perform feasibility studies and evaluate business benefits - AWS Infrastructure implementation o Built multi-VPC AWS infrastructure spanning Singapore & Frankfurt regions o Implement Directconnect between AWS regions & on-premises with BGP running over GETVPN tunnel o Implemented two tier firewalls and DMZ network on AWS with virtual firewalls - Azure Infrastructure implementation o Built multi-VNET architecture in Azure Amsterdam region o Implement ExpressRoute between Azure & on-premises with BGP running over GETVPN tunnel

- Support Core, Aggregation & WAN segments of Melco-Crown Network - Design and architect complex network solutions - Configure and maintain a wide variety of networking gears such as Cisco campus & data center switches, routers and firewalls - Implemented L2 network attack mitigation techniques such as Dynamic ARP inspection, Port-security controls, BPDUGuard & RootGuard - Consult with users and evaluate requirements, recommend designs, provide cost analyses, plan projects, and coordinate tasks for installation of data networks. - Setup and configure monitoring systems such as CiscoWorks & Solarwinds for simplified monitoring and alerting

- System maintenance and operation of corporate Network of Melco Crown Entertainment. - Network maintenance and operation of over 1500 Cisco switches and other networking equipment in City of Dreams and Altira Macau property. - Integration of network of another casino (Altira Macau) following IT department merger and ensure the standard controls - Setup & integration of third-party Hard Rock Cafe network within campus infrastructure and ensuring necessary controls such as Firewall protection, NAT control & IP address segmentation are in place. - Project Planning, co-ordination and implementation of various other infrastructure related projects.

Projects handled at TCS: - J2EE Developer - Enhancement Module (Nov-07 to Jan-08) - Project Analyst - Platform Transformation Project (Jan-08 to Mar-09) - Project Analyst - Data Center Transformation Project (Apr-09 Sep-09)