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تم إلغاء حظر المستخدم بنجاح
ناجاراجان Murugesan, Senior Data Engineer

ناجاراجان Murugesan

Senior Data Engineer·Optum Global Solutions

الهند

بكالوريوس, Electronics and Communication Engineering

الخبرة العملية

مجموع سنوات الخبرة: 14 سنوات, 2 أشهر

Senior Data Engineer

أبريل 2025 - حتى الآن

Optum Global Solutions

تشيناي، الهند

أبريل 2025 - حتى الآن

| Fabric - (Client: United Group, USA | Domain:
• Built a scalable FHIR‑compliant data pipeline using Microsoft Fabric, Databricks, and Snowflake Iceberg, reducing file scanning time
by 40% and saving 50+ hours per week through early-stage regex-based filtering.
• Enabled seamless data ingestion and API integration by implementing elevated pipeline design within Microsoft Fabric, improving
overall processing efficiency and automation.
• Designed and orchestrated scalable pipelines using Azure Data Factory and Airflow (DAGs), leveraging Kafka for streaming data
pipelines and external service integration to process 30M+ records within an 8-hour scheduling window.
• Fine-tuned Data Lakehouse using Medallion Architecture (Bronze/Silver/Gold layers) using Delta Lake and advanced data
modelling, achieving 60% faster query performance, and reducing data load times by 30%.
• Implemented metadata-driven frameworks and data observability practices to enhance pipeline monitoring, reliability, and system
performance.
• Conducted root cause analysis, deployed robust batch processing solutions, incorporating monitoring and improve pipeline
reliability and ensure timely resolution of critical production issues within SLA.
• Enabled data pipelines and infrastructure deployment using CI/CD pipelines, reducing release cycles by 20%.
• Ensured high data quality through data validation, cleansing, and preprocessing techniques, reducing inconsistencies, and
improving overall data reliability.

مجال الشركة:
خدمات الرعاية الصحية الأخرى
الدور الوظيفي:
تكنولوجيا المعلومات

Senior Technology Specialist

مايو 2021 - مارس 2025

HCL Technologies Ltd

تشيناي، الهند

مايو 2021 - مارس 2025

|
• Built and maintained scalable data pipelines using PySpark for data ingestion, transformation, and loading into Hive tables,
improving processing efficiency by 30%.
• Simplified reporting processes using SQL and SSRS, delivering daily, weekly, and monthly reports for order management, reducing
report generation time by 40%.
• Improved data accuracy by automating data extraction and validation processes, minimizing manual errors and achieving
consistent, high-quality reporting.
• Collaborated with cross-functional teams to integrate new data sources into existing pipelines, ensuring seamless data flow and
system alignment.
• Led and mentored a team of 8 members, delivering projects within tight deadlines and improving overall user satisfaction by 20%.
• Co-ordinated on premises to AWS cloud migration, enabling data integration through existing pipelines and managing large-scale
data storage in Amazon S3, improving system uptime by 30%.

مجال الشركة:
خدمات تكنولوجيا المعلومات
الدور الوظيفي:
تكنولوجيا المعلومات

System Analyst

أغسطس 2020 - مايو 2021

Orcapod Consulting Service Pvt Ltd

بنغالورو، الهند

أغسطس 2020 - مايو 2021

• Tuned complex SQL queries and optimized PySpark transformations in Jupyter Notebooks by refining indexes, joins, partitions, and
execution plans, reducing execution time by 50%.
• Led migration of legacy databases to Oracle and data processing frameworks, improving overall performance by 25% and
supporting best practices in data design.
• Delivered stored procedures, triggers, views, PySpark ETL jobs, and automated reporting solutions, saving 15+ hours per week.
• Mentored a team of 5 developers through training on SQL optimization, PySpark development, and database management
techniques.

مجال الشركة:
خدمات تكنولوجيا المعلومات
الدور الوظيفي:
تكنولوجيا المعلومات

System Analyst

مارس 2019 - مارس 2020

Jobline Resources Pte Ltd,

Singapore، سنغافورة

مارس 2019 - مارس 2020

• Created and maintained 25+ reports for MediSave scheme enhancements (regulatory, operational, analytical) using SAS SQL and
PySpark-based data processing in Jupyter Notebooks, improving reporting efficiency by 30% through automation.
• Performed unit and system testing using SAS SQL, IBM DB2, and PySpark notebooks, resolving 50+ UAT queries and improving data
accuracy and stakeholder satisfaction.
• Developed standardized data extraction and transformation workflows using SAS SQL and PySpark in Jupyter Notebooks, reducing
manual effort by 30+ hours per month.
• Managed project documentation, including action plans and technical design specifications, supporting data quality initiatives and
PySpark-based reporting solutions.

مجال الشركة:
خدمات الاستشارات التجارية
الدور الوظيفي:
تكنولوجيا المعلومات

System Analyst

مايو 2018 - مارس 2019

Talentvis Singapore Pte Ltd,

Singapore، سنغافورة

مايو 2018 - مارس 2019

Sale and Mortgage System (Client: Housing Development Board, Singapore | Domain: Ministry of National
Development)
• Gathered requirements and defined technical solutions for DB2/SAS-based reporting systems, achieving 95-98% unit testing pass
rates with less than 5% post-production defects.
• Delivered PL/SQL procedures and DB2 queries for mortgage reporting, improving performance by ~15% while identifying 85-90%
of defects during testing to ensure smooth UAT cycles.
• Rectified system defects and improved data quality, decreasing post-production issues by 70% and ensuring 99% reporting
reliability for mortgage systems.

مجال الشركة:
خدمات تكنولوجيا المعلومات
الدور الوظيفي:
تكنولوجيا المعلومات

Senior Software Engineer

ديسمبر 2014 - أبريل 2018

Sopra-Steria India Ltd

تشيناي، الهند

ديسمبر 2014 - أبريل 2018

ISA Reconciliation, Solvency II, and WL Bonus Rates (Client: Royal London Group, United Kingdom | Domain: Insurance)
• Prepared and optimized 40+ complex SQL programs, including 15+ new developments and enhancements, supporting regulatory
reporting for a UK-based insurance client.
• Enhanced DB2 query performance, achieving 40% reduction in execution time for batch jobs supporting financial reconciliation.

مجال الشركة:
خدمات تكنولوجيا المعلومات
الدور الوظيفي:
تكنولوجيا المعلومات

Associate Software Engineer

أغسطس 2013 - نوفمبر 2014

Software Paradigms InfoTech Pvt.Ltd

Mysore، الهند

أغسطس 2013 - نوفمبر 2014

RCV - WMS Re-platform (Client: Macys, United States of America | Domain: Retail)
• Defined and executed development plans, including retrofit planning and implementation.
• Prepared CIT plans based on program specifications to ensure successful execution.

مجال الشركة:
خدمات تكنولوجيا المعلومات
الدور الوظيفي:
تكنولوجيا المعلومات

Software Trainer

يناير 2012 - أغسطس 2013

Gowdanar Technologies

بنغالورو، الهند

يناير 2012 - أغسطس 2013

مجال الشركة:
تطوير البرمجيات
الدور الوظيفي:
التدريب والتطوير

التعليم

Pavendar Bharathidasan College of Eng. & Technology affiliated by Anna University Trichy

أبريل 2010

أبريل 2010

بكالوريوس، Electronics and Communication Engineering

الهند

Skills

ANALYTICS
Intermediate
ANALYTICS
Intermediate
AZURE SERVICE FABRIC
Intermediate
AZURE SERVICE FABRIC
Intermediate
CLOUD COMPUTING ARCHITECTURE
Intermediate
CLOUD COMPUTING ARCHITECTURE
Intermediate
CLOUD MIGRATION
Intermediate
CLOUD MIGRATION
Intermediate
DATA ENGINEERING
Intermediate
DATA ENGINEERING
Intermediate
DATA PROCESSING
Intermediate
DATA PROCESSING
Intermediate
MICROSOFT AZURE
Intermediate
MICROSOFT AZURE
Intermediate
PYSPARK
Intermediate
PYSPARK
Intermediate
REAL TIME COMPUTING
Intermediate
REAL TIME COMPUTING
Intermediate
SQL PROGRAMMING LANGUAGE
Intermediate
SQL PROGRAMMING LANGUAGE
Intermediate

التدريب و الشهادات

الشهادات
Data Engineering
Generative AI –
SAS Base Programmer
AWS Data Engineer
Microsoft Fabric Data Engineer