Senior Data Engineer with 4+ years of experience building enterprise-scale data pipelines and big data platforms for Apple AdPlatforms at Tata Consultancy Services (TCS). I specialise in designing, developing, and optimising high-performance ETL pipelines that process 2TB+ of advertising data daily using PySpark, Apache Spark, Databricks, and Delta Lake on Amazon Web Services (AWS).
Tata Consultancy Services (TCS) -- Montevideo, Uruguay
Designed and developed scalable ETL pipelines and data pipelines using PySpark, Apache Spark, Databricks, and Delta Lake on Amazon Web Services (AWS), processing 2TB+ daily big data advertising datasets and achieving 30% reduction in pipeline latency for Apple marketing analytics. Optimized distributed computing workloads and SQL queries via partition pruning, broadcast joins, and cluster tuning, delivering 40% improvement in query performance and reducing AWS cloud computing costs by 18%. Built a comprehensive data quality and data governance framework with automated schema enforcement, data validation, and anomaly detection, reducing data defects by 35% and maintaining 99.5% data accuracy across 8+ data sources. Architected data warehouse and data lake solutions integrating 8+ advertising data sources including impression data, clickstreams, and conversion events into Delta Lake Lakehouse, enabling real-time data processing and analytics. Orchestrated end-to-end data pipelines using Apache Airflow DAGs and GitHub Actions CI/CD pipelines, enabling automated testing, deployment, and scheduling across development, staging, and production environments. Developed Python automation scripts for internal tooling and client-facing workflows, eliminating manual processes; built Python Slack bots for real-time pipeline alerts, job status notifications, and SLA breach warnings. Monitored pipeline health and data infrastructure using Datadog, Grafana, Splunk, and AWS CloudWatch, proactively resolving bottlenecks and reducing incident response time by 25%. Managed data infrastructure inventory across AWS and on-premises systems, tracking resource utilization and rightsizing compute for cost efficiency. Leveraged AI-assisted development tools including Claude Sonnet and Claude Code daily for code generation, debugging, and pipeline optimization, improving engineering productivity by 30%. Collaborated cross-functionally with Apple product managers, data scientists, and business stakeholders to translate requirements into optimized data models, improving dashboard performance by 25%.
Tata Consultancy Services (TCS) -- Hyderabad, India
Provided 24/7 production support for mission-critical Apache Spark and ETL pipeline workflows on AWS, maintaining 99.8% system availability across high-volume big data batch processing environments. Delivered bare-metal hardware and software support for on-premises Linux servers, managing full incident lifecycle from triage to resolution across hybrid on-premises and cloud computing environments. Diagnosed data pipeline failures and performance bottlenecks using AWS CloudWatch, Datadog, and Splunk, performing root-cause analysis and delivering fixes that reduced recurring incidents by 30%. Automated monitoring, alerting, and data validation workflows using Python scripting and Apache Airflow, reducing manual operational intervention by 40% and improving mean time to resolution (MTTR). Maintained incident runbooks and technical documentation, enabling faster on-call handoffs and reducing escalation rates through cross-functional team collaboration.
Tata Consultancy Services (TCS) -- Hyderabad, India
Completed TCS onboarding training covering AWS cloud fundamentals, Linux system administration, and Python scripting basics. Assisted the team in monitoring data pipelines, logging incidents, and resolving support tickets under senior engineer supervision. Practiced SQL query writing, shell scripting, and basic ETL concepts in a collaborative project environment. Participated in Agile daily standups and sprint ceremonies, developing familiarity with professional software delivery workflows.
Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology -- Chennai, India
I'm always open to new opportunities and interesting conversations.