Mahadevan Varadhan

Mahadevan Varadhan

Director of Technology | Senior Manager – AI and Data

Contact Information

Email: mahadevan.varadhan@gmail.com

Phone: +91 9884531666

LinkedIn: Profile

GitHub: Profile

Medium: Profile

About Me

Passionate Data Engineer and AI enthusiast with over 20 years of experience in ETL, Data Modelling, Data Visualization, Business Intelligence, Artificial Intelligence, Gen AI, SQL, and Cloud technologies. I excel in building robust data platforms, creating insightful reports and dashboards using Python, Tableau, and Power BI, and driving innovation through cutting-edge AI solutions.

Key Skills

SQL Server/Redshift/BigQuery ★★★★★★★★☆☆

Airflow/Pandas/Python ★★★★★★★☆☆☆

Data Warehouse/Data Lake ★★★★★★★★☆☆

SSIS/SSRS/Data Modelling ★★★★★★★★☆☆

NLP/Tableau/Data Studio ★★★★★★★☆☆☆

GenAI/Prompt Engineering ★★★★★★★☆☆☆

GCP/AWS Cloud/AWS Glue ★★★★★★☆☆☆☆

Tableau/Power BI ★★★★★★★★☆☆

Flask/Django/Fast API ★★★★★★★★☆☆

Professional Experience

Director of Technology

Talentship (Jan 2022 - Present) | Octonomy (Jan 2025 - Present)

  • Developed SQL queries for DBT models and built Airflow pipelines for TomTailor; designed and published Tableau reports.
  • Created data models and provided technical guidance on pipeline and architecture for SoSafe.
  • Developed Tableau reports for AO in Event Planning, IT Budget Cost, and Governance Board.
  • Built LLM-based AO Guide bot to extract data from medical books and papers for faculty and students.
  • Created AO Customer Support Bot using Langchain and Claude LLMs for instant Jira ticket support.
  • Designed data models and vector embeddings for Octonomy’s knowledge store; worked on prototypes and use cases.
  • Served as Management Representative for ISO 9001, 27001, and 27701 certifications.

Director of Engineering and Data Platform

Learnship (Apr 2021 – Jan 2022)

  • Led migration of legacy products to serverless technologies (AWS Lambda, DynamoDB, Aurora, Personalize, Pinpoint).
  • Conducted R&D with architects and workshops with Azure/AWS partners for best practices.
  • Organized hackathons and training programs to upskill teams; introduced reward systems.
  • Collaborated with global teams and clients; successfully migrated 80% of legacy systems.

Head of Data Engineering

Learnship (Jan 2019 – Apr 2021)

  • Architected a global data warehouse post-acquisition using AWS Glue, S3, Redshift, and Power BI.
  • Designed data flows and implemented near real-time reporting for learners.
  • Introduced serverless notifications for weekly/monthly progress metrics.
  • Developed AI News Feed: classified news by difficulty, built recommendation systems, and created dashboards.

Senior Data Architect

News Technology Services (News Corp) (May 2016 – Jan 2019)

  • Designed Customer Data Platform (CDP) in AWS Redshift and Airflow; built decision-making reports.
  • Implemented data governance and anomaly detection; created customer identification system.
  • Migrated SAS ETL pipelines to Airflow and built data marts in BigQuery.
  • Architected Editorial Dashboard with Google Analytics, BigQuery, and NLP APIs for real-time insights.
  • Managed teams to deliver reports and optimize reader flow for editorial content.

Education

Master of Science

University of Madras, Chennai

Awards & Certifications

ISO 9001, 27001, 27701 Certifications

Played a major role as Management Representative in achieving these certifications at Octonomy.

Certifications

View full list on LinkedIn.