Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

SenthilKumar Sekar

Odessa,FL

Summary

Accomplished Senior Data Engineer with 12+ years of experience leading projects by acting as architect, developer and programmer analyst. Proficient in supporting project deliverables and maintaining releases. Strong leader in guiding support teams and solving complex issues. Steadfast in planning and
implementing effective development strategies based on industry best practices.

Overview

16
16
years of professional experience
1
1
Certification

Work History

Senior Data Engineer

THE NIELSEN COMPANY
05.2018 - Current
  • Contributed to the architecture design of complex software systems, ensuring scalability and maintainability.
  • Reengineered existing ETL workflows to improve performance by identifying bottlenecks and optimizing code accordingly.
  • Developed a robust PySpark framework deployed on
    AWS and optimized costs by leveraging cloud-based resources effectively, resulting in a significant
    performance boost.
  • Implementing Serverless Event-Driven Architecture using Lambda.
  • Designed Apache Airflow DAGs for workflow management to schedule and execute end-to-end data pipelines efficiently.
  • Lead and completed the migration of multiple Hadoop projects to AWS by leveraging the power of PySpark for greater agility and cost efficiency.
  • Implemented a suite of highly effective Spark performance tuning techniques.
  • Utilize CI/CD tools and Git for automating the build process,
    enhancing efficiency and consistency in development workflows.
  • Maintain version control to track changes and ensure seamless collaboration within the development team.
  • Streamlined development processes by incorporating agile methodologies and continuous integration practices.
  • Reduced system downtime by conducting rigorous testing and addressing critical bugs promptly.
  • Mentored junior developers, providing guidance on best practices and coding techniques for improved productivity.
  • Delivered high-quality code on time by effectively managing project timelines and prioritizing tasks accordingly.
  • Documented code thoroughly, facilitating ease of understanding for other team members during maintenance cycles or future updates.
  • Conducted comprehensive code reviews, ensuring adherence to established coding standards and improving overall code quality.
  • Spearheaded the successful migration of legacy systems to modern platforms without compromising functionality or data integrity.
  • Participated in troubleshooting efforts, efficiently isolating root causes of issues and implementing effective solutions quickly.
  • Established clear communication channels between developers, QA testers, and stakeholders resulting in better collaboration leading to faster delivery of key features.

Senior Software Developer

University Of California Office Of The President
11.2017 - 04.2018
  • Created web-based applications for departments section.
  • Design and implement database-driven web sites.
  • Developed dynamic web sites by building MySQL databases, writing code (in PHP, Smarty, HTML, CSS and JQuery), performing testing, and writing system documentation.
  • Provides technical support for ancillary web-related applications provided by IT.
  • Worked on migrating old web applications into PHP 5.6.
  • Coordinated technical architecture with Data Center personnel on changes to web servers and web-site related technical matters such as software and hardware upgrades, architectural changes and connectivity issues.
  • Involved in testing upgrades to ensure that production services remain available after technical changes to hardware and software.
  • Managed Git repository, code merging, and production deployments.
  • Used JIRA/Agile board to track development, migration and testing issues.
  • Collaborated with cross-functional teams to integrate software components seamlessly into existing systems.

Senior Software Developer

EBay Inc
01.2017 - 10.2017
  • Developed back end components for web applications and WordPress CMS based websites.
  • Experience in build and maintain custom VPC instance
    Optimized application for maximum speed and scalability.
  • Used JavaScript to display RESTful data.
    Responsible for Stability and Security of WordPress applications.
  • Developed a backup and recovery strategy for MySQL & Oracle databases, configured and created scripts to backup database to C3 cloud environment.
  • Backup automation using Shell Script and cron tab.
    Fixed Bugs with the help of Jira (Bug Tracking System).
  • Used all aspects of PHP Programming and MySQL.
  • Clear understanding of the entire project life cycle including Analysis, Design, and Development.
  • Worked on PHP 5.6, MySQL, HTML5, CSS3, Ajax, JavaScript, jQuery, and WordPress on Windows and Linux operating systems.
  • Responsible for creating the navigation menu and sub menu in the site using CSS, HTML and jQuery.
  • Designing in HTML5, DHTML, CSS3, JavaScript and jQuery for making website more attractive.
  • Managed Git repository, code merging, and production deployments.
  • Used JIRA/Agile board to track development, migration and testing issues.
  • Created C3 VPC instances, install LAMP stacks, deploying and maintaining C3 VPC instances.
  • Sample Links:
    https://www.ebay.com/motors/blog
    https://stylestories.ebay.com/

Senior PHP Web Developer

EasyLink
05.2008 - 02.2016
  • Responsible for both back-end programming in PHP and front-end functionality using JavaScript, Ajax, jQuery libraries, and other technologies.
  • Experience with RDBMS, backup and restore.
    Building the web pages from scratch using WordPress, PHP & MySQL.
  • Worked with major PHP frameworks such as CodeIgniter, Yii.
  • Worked on PHP programming, including Object oriented, procedural, data structures and design patterns.
  • Used various inbuilt PHP functions to write complex code and achieve various functionalities.
  • Worked very closely with designing team to provide great user interface.
  • Implemented Bootstrap in developing UI.
  • Created client side validation using technologies such as jQuery and JavaScript.
  • Participated in designing the database in MySQL, Oracle.
  • Tuned the SQL queries and stored procedures to improve performance on RDBMS.
  • Implemented AJAX to enhance the capability of the website.
  • Implemented SEO based WordPress plugins to optimize the search function all over the site.
  • Used SVN/GIT to maintain current and historical versions of files such as source code and web pages.
  • Basic knowledge in Symantec NetBackup backup and recovery software.
  • Worked with Payment Gateway Integration such as PayPal, PayTrace, FirstData & Authorize.net.
  • Used PHP MyAdmin, Navicat MySQL to handle the administration of MySQL.
  • Generation and exportation of reports in PDF, EXCEL format using HTML2PDF, PHPEXCEL, and etc.,
  • Sample Links:
    https://openfocus.com/
    http://manippt.org/
    https://trinityreservations.com/
    http://bfsmdb.com
    http://brisbanefire.com.au/

Education

Bachelor of Science - Computer Science

Periyar University
Tamil Nadu,India

Master of Science - Computer Science

Periyar University
Tamil Nadu,India

Skills

  • Languages: PySpark, Python, SQL
  • Orchestration: Apache Airflow
  • Cloud Technologies: AWS EMR, EC2, Lambda,SQS, SNS
  • Server side Scripting: PHP 55, PHP 7, Python
  • Client Side Scripting: JavaScript, AJAX, jQuery, JSON
  • Databases: MySQL, Oracle, Ms Access and Hive
  • MVC Frameworks: Yii, Code Igniter and WordPress
  • Technologies used: HTML, CSS, HTML 5, CSS3, JSON, Twitter Bootstrap, Google Maps, Dreamweaver, NetBeans, Eclipse, Adobe Photoshop, Navicat for MySQL & PHPMyAdmin
  • Operating Systems: Microsoft Windows, Linux
    Payment Gateway Integration: PayPal, PayTrace, FirstData & Authorizenet
  • Tools: GIT version control system, Bitbucket, Jira & Atlassian tools, code deployment with C3 & AWS EC2
    Methodology: Waterfall & Agile

Certification

AirFlow DAG Authoring!!

Timeline

Senior Data Engineer

THE NIELSEN COMPANY
05.2018 - Current

Senior Software Developer

University Of California Office Of The President
11.2017 - 04.2018

Senior Software Developer

EBay Inc
01.2017 - 10.2017

Senior PHP Web Developer

EasyLink
05.2008 - 02.2016

Bachelor of Science - Computer Science

Periyar University

Master of Science - Computer Science

Periyar University

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