Krithika Loganathan
Senior DataStage Developer/Support Lead
Chennai
Summary
Software Engineering Professional with 14+ years of experience in IBM DataStage, ETL tools, migration projects, and production support leadership activities. Extensive expertise in designing, developing, documenting, implementing, and supporting data integration and application enhancement projects across enterprise environments.
Strong background in ETL development, data warehousing, data migration, performance tuning, job scheduling, automation scripting, and production support management. Proven ability to lead production support teams, manage incident resolution (L1/L2/L3), perform root cause analysis (RCA), and ensure SLA compliance.
Experienced in delivering scalable data solutions within the insurance domain, translating business requirements into technical specifications and optimized workflows. Adept at continuous improvement, process automation, and driving operational efficiency in fast-paced, deadline-driven environments.
Overview
16
16
years of professional experience
2
2
Certifications
3
3
Languages
Work History
Senior Developer/Team Lead
Cognizant Technologies Solutions
06.2017 - Current
- Led a team of ETL developers, managed task allocation, provided technical guidance, conducted code reviews, and ensured on-time project delivery.
- Designed, developed, and maintained ETL workflows using IBM DataStage to support enterprise data integration and transformation.
- Migrated ETL/DataStage jobs to AWS Cloud, ensuring scalability, security, and high availability.
- Automated manual data processing tasks using DataStage, scripting, and scheduling tools to improve efficiency, and reduce processing time.
- Performed ETL performance tuning, job optimization, and resource management to enhance batch processing efficiency.
- Troubleshot production job failures, conducted root cause analysis (RCA), and resolved data quality and integrity issues.
- Executed bulk data corrections and implemented validation checks to maintain data accuracy.
- Collaborated with business stakeholders to gather requirements and deliver enhancements across SDLC phases.
- Developed reusable ETL components following best practices to minimize production defects.
- Monitored job schedules, logs, and performance metrics post-deployment to ensure system stability and SLA compliance.
- Projects: Glatfelter, IFEED, and PDI.
Senior Technical Support Specialist
Cognizant Technologies Solutions
05.2017 - 09.2019
- Resolved complex production job failures in Informatica and DataStage environments through effective root cause analysis.
- Performed data validation and bulk data corrections to maintain data accuracy and system stability.
- Handled high-priority and ad-hoc client requests, ensuring timely resolution and strict SLA adherence.
- Maintained zero client escalations by delivering consistent, quality-driven support.
- Projects: Information Management, and FIS.
Developer
Cognizant Technologies Solutions
11.2014 - 09.2016
- Led the migration of IBM DataStage jobs from the legacy environment to the new platform, including the export/import of all project components.
- Converted parallel and server jobs to native stages, ensuring compatibility and optimized performance.
- Troubleshot and resolved issues across DataStage jobs, UNIX scripts, server configurations, and Autosys scheduling workflows.
- Executed end-to-end testing in SIT, QA, and Production environments; identified and fixed defects in ETL workflows, and batch scheduling.
- Performed data validation and file comparisons between old and new servers; resolved data integrity, and layout discrepancies.
- Prepared comprehensive migration documentation, including run books, deployment guides, and test cases.
- Managed production deployment and provided post-production support, resolving data-related issues within the SLA.
- Acted as a Subject Matter Expert (SME) for the migration of DataStage projects to Informatica and Oracle-based solutions.
- Projects: EDI batch consolidation, and EDI rewrite.
Developer
Tata Consultancy Service
11.2009 - 10.2014
- Gathered and analyzed business requirements, and prepared Source-to-Target Mapping (S2T) documents.
- Designed and developed IBM DataStage parallel jobs based on functional and technical specifications.
- Performed unit testing, defect analysis, and issue resolution to ensure high-quality ETL delivery.
- Prepared and executed deployment activities across environments.
- Developed UNIX shell scripts for data archival and FTP file transfers.
- Monitored and resolved job warnings and performance issues, post-development.
- Created detailed Technical Design Documents (TDD) for developed modules.
- Projects: Affinity Group Management System, EXCOR Enhancements, WCPAYGO Phase III, Walmart Development, CRM-Data Mart.
Education
Bachelor of Engineering - Computer Science Engineering
Anjalai Ammal Mahalingam Engineering College
Tamil Nadu05-2008
XII - Biology
Annamalaiar Mills Girls Higher Secondary School
Dindugul03-2004
Skills
Data Stage , ETL
Oracle
Linux
Migration
Team leadership
Automation expertise
Certification
Certified Aws cloud practitioner.
Timeline
Senior Developer/Team Lead
Cognizant Technologies Solutions
06.2017 - Current
Senior Technical Support Specialist
Cognizant Technologies Solutions
05.2017 - 09.2019
Developer
Cognizant Technologies Solutions
11.2014 - 09.2016
Developer
Tata Consultancy Service
11.2009 - 10.2014
Bachelor of Engineering - Computer Science Engineering
Anjalai Ammal Mahalingam Engineering College
XII - Biology
Annamalaiar Mills Girls Higher Secondary School