Dinesh Marimuthu
Chennai
Summary
Seasoned IT professional with 15+ years of experience specializing in data engineering, migration, and mainframe development. Proficient in SQL, Python, ETL tools, cloud technologies, and scheduling tools. Skilled in designing and implementing scalable data pipelines for large-scale migrations and transformations. Expertise in managing high-volume data migrations and optimizing performance for large-scale data systems while ensuring accuracy and operational efficiency.
Overview
15
15
years of professional experience
4
4
Certification
Work History
Data Engineer/Migration Specialist
Cognizant Technology Solutions India Pvt Ltd
Chennai
10.2023 - 05.2024
- Defined data engineering strategies, ensuring data quality, security, and compliance during extensive data migration projects with cross-functional teams.
- Migrated legacy Abi Initito to modern AWS-based architectures, utilizing AWS Glue for data transformation and querying Athena.
- Automated data validation, transformation, and loading tasks using Python, libraries like Pandas, and boto3.
- Integrated Control-M scheduler to automate data pipeline execution, monitor, and recover failures for 99.9% uptime.
- Key skills: AWS Glue, Athena, S3, Python (Pandas, boto3)
Data Engineer/Migration Specialist
Accenture Solutions
Chennai
07.2022 - 09.2023
- Led data migrations across on-premise and cloud environments.
- Proficient in SQL, Python, SSIS, and Control-M for data analysis, validation, and automation.
- Experienced in cloud service management and Control-M workflow design.
- Skilled in data mapping, scheduling, and technical documentation.
- Key Skills: SQL, SQL Server Migration Assistant, Python(Pandas,Pyodbc), SSIS, Control-M
Data Engineer/Migration Specialist
Cognizant Technology Solutions
Chennai
10.2021 - 09.2022
- Designed and implemented Control-M workflows for efficient batch processing.
- Managed job scheduling and dependencies in a Unix environment.
- Proficient in shell scripting for technical tasks.
- Ensured compliance with Control-M standards and deployed jobs effectively.
- Key skills : Control-M, Unix, shell scripting, Oracle
Data Lead/Data Migration Specialist
Unisys India private limited
Hyderabad
04.2019 - 09.2021
- Collaborated with stakeholders to define and document data conversion requirements.
- Conducted data mapping exercises to ensure accurate data translation.
- Built and managed complex ETL workflows using SSIS and Syncsort DMX-h for data integration across multiple systems.
- Worked with SQL Server to develop and maintain stored procedures, triggers, and views to ensure data consistency and integrity across databases.
- Managed data cleansing, transformation, and aggregation processes to deliver data for downstream analytics and reporting.
- Developed and upheld SQL scripts that facilitate extraction, transformation, and loading of data from various source systems.
- Led data modernization project, modeling database structures, and identifying areas for enhancement.
Mainframe Developer
Cognizant Technology Solutions
03.2018 - 03.2019
- Managed custom solution development by leading offshore teams
- Created and executed technical solutions adhering to quality and standards.
- Managed testing processes to maintain high-quality deliverables.
- Collaborated with business leads for effective production solutions.
- Ensured timely project completion and provided team feedback.
Lead Mainframe Developer/Data Migration Analyst
Accenture Solutions
Chennai
03.2017 - 03.2018
- Designed, developed, and implemented workflow program. Oversaw various interface development phases and business logic based on technical specifications.
- Conducted system study and coordinated with team for system design and integration, application maintenance.
- Conducted regular review meetings to closely track project progress against scheduled timeline.
- Key Skills: SQL Server, Cobol, IBM DB2, JCL
- Key Projects:
- Agent Payroll Modernization
- Product Modernization – Single Premium Juvenile.
- Product Modernization – New term riders to Whole life policy.
Mainframe Developer
Accenture Solutions
Chennai
06.2015 - 03.2017
- Extracted data from various heterogeneous sources like IBM DB2, SQL Server, and Flat Files.
- Developed batch jobs to extract, transform, and transfer data
- Tuned and optimized DB2 SQL queries for better performance in a mainframe environment.
- Established secure SFTP connections with external vendors to facilitate data transfer to HCSC
- Key Skills: SQL Server, COBOL, IBM DB2, JCL
- Key Projects:
- AIM Extract and data load.
- Provider extraction and Provider data load.
- Provider Finder Sequestration.
Government. Of Los Angeles County
Unisys Global Services India
Hyderabad
01.2015 - 06.2015
- Developed Unisys batch codes and custom routines for a government department.
- Designed and implemented functionally effective Cobol programs for Unisys mainframe applications
- Skills: Unisys Mainframe, Cobol, ECL, Web Services
Mainframe Developer
NTT Data Services
Bangalore And Hyderabad
09.2010 - 11.2014
- Created a new automated routine that extracts data from IBM DB2, flat files, and VSAM from one environment and loads it into different environments.
- Involved in full project life cycle involving Requirement Analysis, Design, Coding, Testing, and Implementation phases.
- Developed tools and custom routines for migration and historical data extraction projects.
- Analyzed ADABAS databases to gain anunderstanding of current data structures.
- Developed the ADABAS/Natural programs to extract the data from the ADABAS database.
Web Developer
Adol Media
Coimbatore
04.2009 - 07.2010
- Developed e-commerce websites by utilizing PHP and MySQL database on Magento platform.
- Installed, configured, and customized Magento modules to meet project requirements.
- Enhanced website functionality by developing custom Magento modules and themes.
- Skills: MySQL, PHP, Magento
Education
B.Tech - Information Technology
Coimbatore Institute of Technology
Coimbatore05-2008
Skills
- Languages: SQL, Python(Pandas, Pyodbc, boto3) COBOL
- ETL & Data Tools: Syncsort DMX-h, SSIS
- Cloud Technologies: AWS (Glue, Athena, S3)
- Scheduling: Control-M
- Databases: SQL Server, DB2, Unisys RDMS
- Mainframe: COBOL, JCL, DB2
- Version Control: Git, GitHub, Bitbucket
- Project Management: Agile, Waterfall
Certification
- AWS Certified Cloud Practitioner – Amazon Web Services.
- Databricks Certified Data Analyst Associate
- Dataiku Core Designer Certified
- IBM DBA for DB2 10 for z/OS Certified
Timeline
Data Engineer/Migration Specialist
Cognizant Technology Solutions India Pvt Ltd
10.2023 - 05.2024
Data Engineer/Migration Specialist
Accenture Solutions
07.2022 - 09.2023
Data Engineer/Migration Specialist
Cognizant Technology Solutions
10.2021 - 09.2022
Data Lead/Data Migration Specialist
Unisys India private limited
04.2019 - 09.2021
Mainframe Developer
Cognizant Technology Solutions
03.2018 - 03.2019
Lead Mainframe Developer/Data Migration Analyst
Accenture Solutions
03.2017 - 03.2018
Mainframe Developer
Accenture Solutions
06.2015 - 03.2017
Government. Of Los Angeles County
Unisys Global Services India
01.2015 - 06.2015
Mainframe Developer
NTT Data Services
09.2010 - 11.2014
Web Developer
Adol Media
04.2009 - 07.2010
- AWS Certified Cloud Practitioner – Amazon Web Services.
- Databricks Certified Data Analyst Associate
- Dataiku Core Designer Certified
- IBM DBA for DB2 10 for z/OS Certified
B.Tech - Information Technology
Coimbatore Institute of Technology
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