Summary
Work History
Education
Skills
Timeline
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Harendra Kumar Sinha

Harendra Kumar Sinha

Toronto,Canada

Summary

Senior Technical Lead with over 13 years of experience delivering enterprise-grade data solutions in large-scale environments. Expert in application development, platform management, ETL frameworks, Azure services, and Snowflake data modelling, with a strong focus on automation, performance optimization, and data security. Recognized for leading high-performing teams, architecting resilient big data platforms, and translating business requirements into robust technical solutions using Python, Java, and cloud-native tools.

Work History

Senior Technical Lead

HCL Technologies Ltd.
  • Developed applications in Hadoop, Solace, Databricks, and Snowflake environments.
  • Worked on Snowflake data modeling and optimizations.
  • Automated data loading using Snowpipe into Snowflake.
  • Design, build, and optimize ETL/ELT pipelines using Databricks (PySpark, SQL).
  • Design and maintain Bronze, Silver, Gold Lakehouse architecture.
  • Hands-on experience with CI/CD, Git workflows, and data security.
  • Experience with JSON, Parquet, and CSV formats.
  • Optimize PySpark jobs, cluster configurations, and query execution.
  • Secured data using Unity Catalog.
  • Implemented role-based access control.
  • Used MDF to orchestrate pipelines dynamically.
  • Familiarity with Delta Lake, partitioning, and Autoloader.
  • Experience with Matillion and DataStage integration tools.
  • Build publisher and subscriber applications in Solace and manage the Solace Event Mesh platform.

Technology Associate

Publicis Sapient
  • Designed custom components and templates, wrote custom widgets, was involved in the replication and rollout process, and wrote SQL2 queries for fetching the nodes and their data.
  • In the backend, we implemented logic in core Java and used Sling APIs to build servlets and components.
  • Worked on Cockpit modules of Hybris to build e-commerce web applications.
  • Designed the front-end using HTML, JavaScript, jQuery, and CSS.

Software Engineer

Sigma Infosolutions
  • Designed JSPs as per the requirements, wrote Spring service interfaces and their implementations.
  • Designed Spring DAOs and their implementations with Hibernate.
  • Implemented Struts action classes, wrote HQL, and SQL queries.
  • Wrote JDBC classes for data transfer with databases, written Hibernate HQL queries and written SQL queries.

Education

B.Tech. - Information Technology

Netaji Subhash Engineering College
Kolkata, India

Skills

  • Azure services: ADF, MDF, Databricks, ADLS, Key Vault
  • Snowflake: data modeling, optimization, Snowpipe
  • Python, PySpark, and advanced SQL
  • CD/CD, Git workflows, and data security best practices
  • Big data: Cloudera, Hortonworks
  • Solace Event Mesh
  • Java, J2EE, JavaScript, jQuery
  • Struts, Hibernate, Spring, AEM, Hybris
  • Matillion, DataStage
  • Maven, Jenkins, Terraform
  • Kubernetes, GCP, Kafka

Timeline

Senior Technical Lead

HCL Technologies Ltd.

Technology Associate

Publicis Sapient

Software Engineer

Sigma Infosolutions

B.Tech. - Information Technology

Netaji Subhash Engineering College

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