Rajeshkannan Velu
Technology Architect
Chennai,TN
Summary
14+ years of IT experience in Data Engineering, Data Warehousing, and Solution Architecture across Pharma, Insurance, and Retail domains. Expertise in AWS Cloud Services (Leveraged diverse AWS services to address critical business challenges.) and Big Data frameworks (Spark, Hadoop, Hive, PySpark). Strong experience integrating Reltio MDM with AWS for master data management, governance, and real-time/batch synchronization. Proven track record of designing scalable, high-performance data platforms, optimizing workloads, and delivering projects ahead of schedule. Strong leadership in preparing HLDs/LLDs, Tech Design Docs, and guiding engineering teams.
Overview
14
14
years of professional experience
5
5
Certifications
Work History
Technology Architect
Roche India Pvt Ltd
12.2020 - Current
- Architected AWS-based big data solutions using S3,Athena,EMR,Redshift,Cloudwatch,Coludtrail,Sagemaker,Lambda ( AWS services used based on business expectations ) and PySpark for large-scale data processing.cale data processing.
- Designed and implemented Reltio MDM–AWS integration for real-time and batch data synchronization.
- Led requirement analysis, high-level and low-level design (HLD/LLD), and documentation for enterprise data projects.
- Optimized ETL/ELT pipelines and reduced data processing time by performance tuning across AWS & Spark jobs.
- Partnered with Data Stewards to enforce Golden Record management and governance rules in integrated platforms.
Technical Lead
AstraZeneca India Pvt Ltd
06.2015 - 12.2020
- Architected and delivered AWS Cloud & Big Data pipelines using Spark, Hive, and Python.
- Integrated Reltio MDM into enterprise data ecosystems, ensuring high-quality master data governance.
- Streamlined data ingestion from multiple formats (JSON, CSV, .dat) into AWS Data Lake and analytics systems.
- Led SIT/UAT/Production support ensuring 99.9% uptime of data pipelines.
Developer / Consultant
Cognizant Technology Solutions
05.2011 - 05.2015
- Developed Informatica ETL solutions for clients (Bayer, ACE Insurance, Mattel, Roche).
- Migrated legacy Datastage ETL to Informatica PowerCenter, improving performance and maintainability.
- Designed and optimized Teradata-based data warehouses and BI dashboards.
- Collaborated in end-to-end SDLC lifecycle from requirements gathering to production support.
Education
MCA -
Vel Rangarajan Sakunthala College of Management and Science
B.Sc. - Mathematics
Muthurangam Government Arts & Science College
Skills
AWS Cloud & Big Data: S3,Glue,Athena,EMR,Redshift,Sagemaker,Lambda,Stepfunction etc( Utilized a range of AWS services to deliver effective business outcomes )
undefinedCertification
AWS Certified Solutions Architect – Associate
Timeline
Technology Architect
Roche India Pvt Ltd
12.2020 - Current
Technical Lead
AstraZeneca India Pvt Ltd
06.2015 - 12.2020
Developer / Consultant
Cognizant Technology Solutions
05.2011 - 05.2015
B.Sc. - Mathematics
Muthurangam Government Arts & Science College
MCA -
Vel Rangarajan Sakunthala College of Management and Science