Mariappan N.

Mariappan N.

Profile 10+Years of Experienceincluding 3.2 years in SPARK, Hadoop

Bangalore , India

Experience: 11 Years

Mariappan

Bangalore , India

Profile 10+Years of Experienceincluding 3.2 years in SPARK, Hadoop

11 Years

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About Me

› 10+ years of experience in Software development and testing field which includes  3.2 years in  Big Data Hadoop development , Hive, cron tab, oozie SMA Java, Hbase, Sqoop, Flume  and  PySpark 2.2 Ecosystem, 4+ year...

Working knowledge in NOSQL database like HBASE.

Involved in loading the data from RDBMS system into HDFS using sqoop.

 Expert in working with HIVE-DATAWAREHOUSE TOOL, creating tables, data distribution by     

  Implementing partitioning, bucketing, writing and optimizing the Hive queries.

Expert in importing and exporting data using Sqoop from RDBMS to HDFS and vice-versa.

Loads the logs data into HDFS by using FLUME.

Implemented table partitioning to improve performance and data management.

Good team spirit and willingness to learn new concepts and ability to work with team and

  Individually.

Experience in writing program using Java.

Good troubleshooting and debugging knowledge on Unix Platform.

• Ability to work in a team by communicating effectively at all levels of the development process

  and also independently.

Knowledge in installing and configuring Big data.

Strong experience in python. And knowledge in java.

Developing scripts using PISpark with hive Context.

Having a experience in Cron tab,SParkSql.

Working knowledge on cloudera environment (CDH5.4.0)

› Responsible for the delivery for Daily and weekly reports.

Manage escalations from customers and address the issues, risks in timely manners.

Good working knowledge of project life cycle activities.

Experienced in Oracle and SQL Server Database.

Experience in ETL testing using Informatica. Strong knowledge on Data warehouse and Data

  Warehouse Architecture.

Excellent good communication and interpersonal skills.

Executed software projects for Health care, telecom, Service Management and Credit Card.

Good knowledge of Amazon Web Service components like EC2.

›2 years of experience in python. 3 years  in Core java.

Knowledge in machine learning concepts and Impala.

›Experience in Flume.

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Portfolio Projects

Phoenix Rewrite is an intranet portal developed for maintaining Distributor records.

https://www.herbalife.co.in

Company

Phoenix Rewrite is an intranet portal developed for maintaining Distributor records.

Contribute

> Moved all the data obtained from different sources into Hadoop environment >Used Hive data warehouse tool to analyze the data in HDFS and developed Hive queries

Description

Phoenix Rewrite is an intranet portal developed for maintaining Distributor records. It involves maintenance of distributor profile, Order placement by distributors, Payments released to distributors, finance calculation such as Tax, Hold, Bonus, Royalty, EFT release to bank sql, Crystal server for statement all of which is migrated to ADF and Oracle environment.

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Company

Mazda

Contribute

Understanding the existing the data files given. › Developing logic for rules implementation › Unit testing of the module developed › Worked on code coverage › Performing data validation.

Description

 CRM Application is used to build the Lead Management system. The Dealer application will mainly be used by the Agents (Customer Service Agents) and Dealer, with an emphasis on logging all interactions with customers. The Lead is generated by Mazda Web Portal, Call Center and other channel.  CRM will be the master system to view all Contact and Lead information.  Java will also be used to upload key information data such as Vehicle, Sales History and Service History. This will be a new multi-language implementation and will cover Poland, French, and Dutch and English

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Skills

Big Data

Wellpoint

WellPoint Inc is the largest health plan company in Blue Cross and Blue Shield.

Company

Wellpoint

Contribute

› Resource Allocation and Team management. › Responsible for Appraisal/Performance Management of the tam. › Resource Selection/Recruitment for Testing Team. › Weekly f

Description

WellPoint Inc is the largest health plan company in Blue Cross and Blue Shield Association in the USA and is an independent licensee of the Blue Cross and Blue Shield Association and serves its members as the Blue Cross licensee for California. WellPoint is a suite of applications for processing insurance claims.  This application consists of the modules like Claim, Member, Provider, Group, Inquiry and Full benefit quote etc. Claim is used to find out the status of claim, claim details etc, Inquiry search is used to create new inquiry and trace the status of existing inquiry, WPA agent can get providers details using provider search (provider id, provider name, Institution name and provider group name).This application is supporting different back end systems such as WGS, WMS (Main frame) and Epds provides single point contact for Provider search.

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Skills

SQL

sprint mobile

Sprint Nextel USA is an ETS (Enterprise Testing Services)

Company

sprint mobile

Description

  Sprint Nextel USA is an ETS (Enterprise Testing Services) based project used by the Sprint for providing the Pre-paid and Post Paid Telecom Services to the Customers. Subscribers are registered through various Channels (for Pre-Paid & Post Paid) either directly (through online registration) or through the CCR (Customer Care Representatives) in the CSM module. The Credit Validation is performed through the Third Party Channels. A rating is provided to the customers where in the data is stored in the CSM DB. The billing operations are performed through the AMDOCS billing system through the ENSEMBLE application. All the modules related to the billing are integrated with the Sprint Nextel System when the monthly billing is generated.

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WWW CRM

Company

WWW CRM

Description

           WW CRM manages customers all over world. It has four instances like WW CRM TST, APJ, EMEA

           and America. Now it is developed in Siebel 7.7 CRM Application. This application contains the

           following entities like Lead Management, Sales, OSS, Marketing, MRM and PRM. BSS.

           Experience in Rational uniform platform, different testing phases in SDLC from inception phase to

           transition  phase, Load testing, Writing Test cases, Test strategy, Test plans, product release etc.

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Skills

.NET Core Siebel

serwell medi equipment

Company

serwell medi equipment

Description

worked as production engineer in serwell medi equioment

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Tools

Excel sheets