Raghav Mahajan has 3.8 years of experience in data warehousing and business intelligence using Informatica and Oracle. He has expertise in ETL development, data modeling, and working with various data sources. His skills include Informatica, Oracle SQL, Unix scripting, and Qlikview. He is currently an Associate ETL Developer at Cognizant Technology Solutions working on projects for clients such as AT&T.

1. RAGHAVMAHAJAN
Contact: +919176074663 Email: araghav8@gmail.com
CAREER OVERVIEW
A competent, result -oriented professional with 3.8 years of experience in Data Warehousing and
Business Intelligence environment with Informatica as ETL and Oracle as Data warehouse. Well
aware of complete Software Development Life cycle in Data warehousing and BI with experience
across ETL and Data warehouse.
Primary Skill : Informatica 9x (2.8 Years)
Operating System : UNIX
Secondary Skill : Oracle SQL & PL/SQL
Unix-Shell Scripting, Qlikview
Others : Shell Scripting
AWARDS/ACHIEVEMENTS
 Given 1st
rating for entire year performance in current Project( Data Layer Audi t Quality
Management)
 President of Electronics society in college by leading the team to win 1 prize at IIT Delhi
 Successfully implemented Network Analytics and Cell Site Analysis Innovation for Cognizant.
 Member of Cognizant’s Outreach program.
CERTIFICATIONS
 Informatica Skill Certification 9.0 (Cognizant Academy CCP)
 Informatica Practitioner (Cognizant Academy CCP)
 Working With Oracle Unix (Cognizant Academy CCP)
 Data Warehousing for Learners (Cognizant Academy CCP)
 Communication Industry Certification (Cognizant Academy CCP)
 Completed Training in Business Intelligence and Data Warehousing including Informatica,
Oracle and UNIX from Cognizant Academy Chennai.
 Successfully completed CTS CAT 4.0 Program by Cognizant.
 Actively participated in many extra -curricular activities like Conducting Trainings, Organizing
events during my college and professional career.
WORK EXPERIENCE
 Working with Cognizant as Associate ETL Developer.
 Have 2.9 years of experience in Data Warehousing Methodologies and Processes
 Expertise in ETL tool Informatica Power Center 9.6.1 working with Toad, Oracle databases
and flat file sources
 Innovative Ideas implemented for Prediction using Azure ML and POWER BI

2.  Working on new developments, supporting existing system and business, monitoring and
fixing production issues in Informatica, Oracle, PLSQL and UNIX.
 Fair knowledge on Data Ware Housing and Data Marts, Schemas, Fact and Dimension
Modeling.
 Dealing with Client for information gathering and preparing Business Requirement
Document (BRD), High Level Document and Functional Specifications Document (FSD).
 Exceptional analytical, troubleshooting organizational, communication, prioritization, and
problem solving and leadership skills with ability to create and sustain high work tempo.
 Got appreciation from Manager and leads for good work and error free deliveries.
 Possess a good knowledge from business requirement gathering, and performing data
profiling, to coding for extraction, data transformation and load.
 Thorough understanding of SDLC, Agile Methodologies, Test Plan Creation, SLA etc.
 Decision & result oriented performer with quick learning abilities, capable to work in a team
environment and handle pressure under strict deadlines.
 Excellent communication, presentation& problem solving skills.
 Good Knowledge in Data Warehousing Concepts and quick adaptability to changing trends
and technologies
 Worked on different Source Systems like Oradea, Flat files, LDAP and JAVA.
ORGANIZATION DETAILS
Cognizant Technology Solutions
Associate (ETL Developer) April 2014 - Present
Tech Live Connect
Senior System Engineer Nov 2013 – March2014
HCL Technologies
Technical Support Engineer Dec 2012 – Nov 2013
EDUCATION
Bachelor of Technology, ECE Engineering 2009 - 2013
Punjab Technical University Scored 74%
Punjab, India
XII Standard, Non -Medical (CBSE) 2008-2009
St Thomas School, Punjab
Scored 70%
X Standard, (CBSE) 2006-2007
SGHP School, Punjab Scored 78%
PROJECTS HANDLED
ORGANIZATION: Cognizant Technology Solutions
Client: AT & T (American Telephone and Telegraph) NOV 2014 – Present
Project: DLAQM (Data Layer Audit Quality Management) ETL Developer

3. Tools Used: Informatica Power Center 9.6.1, UNIX, Toad for Oracle 9.7, SQL Developer
As a part of this project, we are maintaining the client's DWBI Infrastructure.
For this, we closely work with our client and onsite Business Analysts and follow business techniques
and technical expertise that could help them drive their business properly. We are mainly working
with the Data Base management teams to know the Business Impact of any discrepancies in the
data.
ETL Team works closely to extract data from various Sources (Oracle DB, Flat Files LDAP and JAVA)to
carry out an audit using Informatica, PL -SQL etc. to highlight the discrepancies which will affect the
business functionality. These discrepancies are reported to the source team, which take care of all
the discrepancies. Discrepancies are reported using, SAP tool Business Objects and Micro strategy.
So, we play a major role in providing the authenticity of the data between different source systems.
Which in terms contribute a lot in both Client and customer satisfaction.
Role:
 Delivered end to end BI and DW solutions using Informatica and Oracle.
 Analyzed the requirements and framed the business logic for the ETL process.
 Involved in the Framework for ETL design and its documentation
 Tested the code, which include Unit &Integration Testing and Regression Testing.
 Created High Level and Low Level Design specifications
 Extensively worked on creating complex mapping using transformations like Filter,
Aggregator, Expression, Router, Lookup, Update Strategy, Sequence generator, Rank, Union
in Informatica to implement all the business rules which minimized development effort and
complexity of the code.
 Managed the sources like OLTP (Oracle), Flat Files.
 Worked in projects in which from technical point of view, we have rewritten our code on the
basis of our business needs using Informatica, ETL Concepts and PL/SQL.
 Creating Functions, triggers and views for carrying out multiple target table loads.
 Occasionally Involved in Production support activities to monitor the data loads; Tracking
failures; doing Root cause Analysis if required, fixing the code and data issues; optimizing the
codes.
 Most triggers are created to have audit on the tables as well as on the database, to keep a
check. Parameterized stored procedure and function are also used to reduce Informatica
mapping effort
 The mail advantage of using function is modularity, maintainability, and performance
improvement.
 Involved in development of workflows and codes to transform the already existing PLSQL
codes to Informatica to enable easy traceability and maintenance of codes.
 To ensure proper coding and naming standards are followed for the codes.
 Involved in testing the code and ensure proper SDLC process is followed.
 Handling Complete project from Requirement gathering to development to testing and to
production have taken care of all.
 To ensure timely delivery and meeting SLA's for the projects and ad hoc requests.