Preethi Rasu

Data Engineer — Databricks, PySpark & ETL Pipelines

Chennai, IN.

About

Data Engineer with 3+ years of hands-on Python, PySpark, and Databricks experience building cloud-native ETL pipelines, complemented by 12 years of broader IT delivery expertise. Proven leader of 7-engineer Agile teams, adept at re-architecting and optimizing data infrastructure on GCP for autonomous vehicle simulation platforms. Eager to deepen expertise in cloud data engineering, leveraging strong cross-functional communication and problem-solving skills, and open to relocation.

Work

Renault Nissan Technical Business Centre

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Python Developer (Data Engineer)

Chennai, India

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Summary

Spearheaded the development and optimization of cloud-native ETL pipelines and data workflows, leveraging Python, PySpark, and Databricks to process vast datasets for autonomous vehicle simulation platforms on GCP.

Highlights

Developed and optimized Python and PySpark data pipelines using Pandas, NumPy, and SQLAlchemy to process over 8M+ km of autonomous driving simulation data.

Orchestrated Databricks Jobs and Workflows with PySpark and Spark SQL to build ETL pipelines, processing 500,000+ simulation scenarios across 23 projects and 450+ terrain configurations.

Led the migration of production data infrastructure from Azure to GCP, re-architecting Pub/Sub messaging, Cloud Storage, and Cloud Logging pipelines across 10+ production flows with zero data loss.

Operated and monitored GCP Pub/Sub, Cloud Storage, Cloud Logging, and PostgreSQL databases, proactively resolving production data-flow issues to maintain pipeline health.

Standardized Git version control and automated deployment via GitLab CI/CD pipelines, building Docker images and integrating HashiCorp Vault for secure secret management.

Authored pytest and mock-based unit tests to validate ETL and pipeline logic, integrating GitHub Copilot into Agile workflows to accelerate learning and delivery.

Mentored and supported a 7-engineer data engineering team as Team Leader, directing JIRA task allocation and Confluence documentation, fostering continuous skill development.

Renault Nissan Technical Business Centre

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SharePoint Senior Developer

Chennai, India

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Summary

Directed a cross-functional team in the development and delivery of a bilingual enterprise SharePoint application, significantly improving service level agreements and stakeholder collaboration for Nissan users.

Highlights

Directed a 4-person cross-functional team, including a dedicated Japanese translator, to deliver a bilingual English/Japanese enterprise SharePoint application serving Nissan users across Japan and the Americas.

Reduced SLA turnaround time from 3 days to 1 day by optimizing requirements-gathering and analysis, building reusable components, and standardizing documentation.

Managed requirements gathering across diverse Japanese and global stakeholders, ensuring alignment and successful project execution.

Cognizant Technology Solutions

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SharePoint & O365 Development

Chennai, India

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Summary

Spearheaded the migration and administration of SharePoint and O365 environments, enhancing collaboration efficiency and automating key processes for a large user base across multiple regions.

Highlights

Migrated over 1,000 SharePoint workflows to SharePoint Online (O365), boosting collaboration efficiency by 20% with zero business disruption.

Owned site collection administration and portal development for over 1,000 users across 2 regions, automating processes via SharePoint Designer and Nintex.

Ensured seamless operation and accessibility of critical SharePoint resources for a large corporate user base.

GSR Business Services

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SharePoint Developer

Chennai, India

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Summary

Independently developed and maintained critical SharePoint workflows as the sole developer, enhancing user connectivity and search capabilities to significantly improve user satisfaction.

Highlights

Independently developed and maintained SharePoint workflows as the sole developer, ensuring continuous operation and reliability.

Configured Active Directory-SharePoint user connectivity and SharePoint Search, improving user satisfaction by 40%.

Provided comprehensive support for SharePoint functionalities, addressing user needs and optimizing system performance.

Education

Anna University

Chennai, India
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Bachelor of Engineering Computer Science

Languages

English

Certificates

GCP - Professional Cloud Developer Certification

Google Cloud

Skills

Data Engineering & ETL

ETL pipeline design, Data validation & transformation, Large-scale dataset analysis, Production support, Technical documentation, PySpark, Spark SQL, Databricks, ETL pipelines, Data workflows, Databricks Jobs and Workflows, Data-flow issues.

Programming & Scripting

Python (advanced), Pandas, NumPy, SQLAlchemy, secure coding standards, unit testing (pytest, mock), SQL.

Cloud Platforms

Google Cloud Platform (Pub/Sub, Cloud Storage, Cloud Logging), Microsoft Azure, Azure Databricks, GCP.

DevOps & Version Control

Git/version control, code review, technical troubleshooting, SDLC toolchain, GitLab CI/CD, Docker, Kubernetes, HashiCorp Vault, automated deployment.

Collaboration & Project Management

Agile project delivery, Requirements gathering, Cross-functional collaboration, Team leadership, Stakeholder management, Cost savings, Problem solving, Collaboration, JIRA task allocation, Confluence documentation.

AI/ML Tools

GitHub Copilot, ChatGPT, AI-Assisted Development, SCANER, HPC, NVP-CAE simulation platform.

Databases

PostgreSQL.

SharePoint & O365

SharePoint, O365, SharePoint Designer, Nintex, Active Directory-SharePoint user connectivity, SharePoint Search configuration.