Gunjan Mishra

 

 

An accomplished IT professional with 12+ years of experience in  Analysis , Design, Development, Implementation and Support  of Complex software solutions  in Health , Finance , Manufacturing and Educational domain.

 

Qualification Summary (With Expertise in):

·         Designing and developing solutions for senior Data Warehousing/Decision Support Systems, Data integration, Data Migration, ETL process and Business Intelligence using Tools (IBM Data Stage, Informatica, Oracle Data Integrator, Oracle Warehouse Builder (OWB)), Oracle SQL, PL/SQL Packages, Constraints, Functions, Packages, Indexes, Triggers, Oracle SQL Database Objects, Views, Materialized Views, Business Objects 5.1, Cognos on relational database systems such as Oracle and MS SQL Server.

·         Oracle internal architecture, Data dictionaries and system packages, Enterprise Data Warehouse Archiving Techniques, Oracle Streams, Oracle Advance Queuing Techniques and Oracle’s Heterogeneous Services for clustered systems with load balancing techniques.

·         Oracle Data base support and troubleshooting , including installing Oracle software, patches and upgrades; managing and monitoring database performance , Configuring and managing RMAN backup and recovery, performance tuning using SQL Trace, Explain plan, Hints, partitioning ,TKProf, profiling and Oracle Code coverage utilities.

·         Working with MS SQL Server 2008 R2, SSIS packages, SSRS reports, T-SQL and supporting Applications with SQL server backend.

·         Data modeling experience in creating Conceptual Data Model, Partially Attributed Conceptual Data Models, Logical Data Models and Physical Data Models using ER-WIN. Defining and managing Metadata for Data Marts/Data Warehouses.

·         Designing report layouts and developing EIS, Ad-hoc, and standard reports using business intelligence tools.

·         Oracle SOA Suite and Oracle Fusion middleware components.

·         Customizing, developing, working on extensions with Oracle Applications in client/server    and n-tier architecture, deployment of applications on web server

·         Working with Hadoop ecosystem: HDFS, MapReduce, Pig, Hive, HBase, Oozie, Sqoop, Flume and Zookeeper.

·         Excellent communication and interpersonal skills, ability to work in a team or individually and ability to ramp up to new technologies quickly.

 

 

Can help client with,

·         Complete lifecycle implementation of Data warehousing project design & automation of ETL     processes on UNIX /Linux/ Windows environments with error handling design.

·         Application Support with backend Integration services running on MS SQL Server,

·         Big Data solutions, setting up and administration of hadoop clusters, Upgrades/migration , performance tuning , trouble shooting, incident management

·         Oracle Database PLSQL Development /Oracle Applications Development/Support

·         Data Modeling (Logical and Physical) – 3NF as well as Dimensional (Star Schema)

Re-engineering Data Warehouses

·         Large-scale data conversion and migration projects (for example SQL Server to Oracle).

·         Moving  data from a transactional to analytical Processing model

·         Establishing Architecture and Governance policies & procedures, Production rollout and transition plans

·         Data warehouse platform (ETL, Reporting, Modeling, Query tools) selection

·         Facilitating  JAD sessions and requirement gathering workshops

·         Using use cases (UML) or SDLC processes, SOA (Service Oriented architecture), MDM (Master Data Management), and SOX

·         Database administration for Oracle single server or Oracle Real Application Clustered environment with Oracle Golden Gate Technology for High Availability and data replication along with Data Guard for disaster recovery.

·         Designing report layouts for EIS, Ad-hoc, standard reports, Web Page layouts for EIS

·         Implementation of Repository Metadata for Data Warehouses.

·         Business Information Model 

 

 

 

Technical Skills:

·         Databases: Oracle (11g R2) , MS SQL Server, DB2

·         Database Administration: Real Application cluster, Golden Gate , Data Guard

·         Data Modeling Tools – ERWin, Visio

·         ETL/BI tools and IDE’s : IBM Websphare Data Stage Quality Stage/Director, Cognos Reportnet, Informatica, AB Initio, Oracle Warehouse Builder (OWB), Oracle Developer Suit 10g, Oracle Jdeveloper ADF,  Sybase V11

·         Operating System: Windows Family, Unix , Linux

·         Web Technologies: HTML, XML, XSLT

·         Version Control: VSS, PVCS

·         Language and other Applications : Perl , Ruby on Rails , SQL, PL/SQL,C,C++,UNIX Shell scripting, Toad, PL/SQL Developer, Office XP, MS Visio, MS Access

·         High Level Familiarity with Java/J2EE

 

Detailed Professional Experience

New York City Department of Education (NYCDOE), Brooklyn, NY, Jan’09- Feb’ 2013

 

Sr. Oracle ETL Developer/Data Architect

 

The New York City Department of Education is the largest system of public schools in the United States, serving about 1.1 million students in over 1,600 schools. It is creating an Operational Data Store (ODS) for the New York City Department of Education (NYCDOE) Special Education Student Information System (SESIS).  The project vision for the ODS is to establish a data hub to bring in data from up to 30 source systems together so that a broader 360 degree view of the Special Education students is available. 

 

Responsibilities:

·         Redefining an architectural blueprint for the next generation NYCDOE enterprise systems.

·         Working on creating an end to end data management component that will define the data life cycle across the enterprise to leverage and improve existing data and to optimize the business processes of the NYCDOE future.

·         Creation of Operational Data Store as a subcomponent of the larger architecture and data management system while adhering to the architectural principles defined by the Enterprise Architecture group in NYCDOE

·         Creation of Initial solution blue print by analyzing complex legacy systems, working with SME’s and reverse engineering codes from applications built on legacy.

·         Integration of TIENET services (The system used by schools and users for Special Ed Education Process) with Legacy systems, with SQL Servers and SSIS Packages

·         Designing and building fully integrated real time student services for the processing of the updates from legacy systems through web services, ESB and PL/SQL packages.

·         Developing the architected solutions with IBM data stage for initial and daily load. This was done using DataStage Designer to design and develop jobs for extracting, cleansing, transforming, integrating, and loading data using various stages like Aggregator, Funnel, Change Capture, Change Apply ,Sequential file, Hash file, Transformer, Merge, Join and Lookup.

·         Working with project metadata, operational metadata and design metadata. Using parallelism and pipelining to rapidly handle high volumes of work.

·         Using DataStage Director and its run-time engine to schedule and run the parallel jobs, testing and debugging its components and monitoring the resulting executable versions on an ad hoc or scheduled basis.

·         Designing job sequences to automate the process and document all the job dependencies, predecessor jobs.

·         Designed and developed a process for extracting monthly special education student’s reports.

·         Setting up Initial Oracle testing server boxes. (Verizon provided hardware and network operations support).

·         Oracle database maintenance and support.             

·         Developing, modifying and customizing SSIS packages, SSRS reports on MS SQL Server 2008 R2 used for backend of TIENET Application. Writing Stored Procedures and Working with T-SQL queries.

 

Environment IBM InfoSphere Information Server 8.1(DataStage, QualityStage, Information Analyzer, Metadata Workbench, Business Glossary) ,Oracle 11g/10g, SQL, PL/SQL, SQL * Loader, XML, UNIX shell scripts, Windows XP, TOAD, Oracle SQL  Developer,  MS SQL Server 2008 R2, MS Access DB,  Microsoft Share point Access,  Windows ftp utilities client , PVCS (for version control). Microsoft SSIS and SSRS

 

Tracfone Wireless Inc., Miami, FL, Nov’08-Jan’09                                   

 

Oracle Data warehousing Consultant.

 

Tracfone wireless is America’s largest “No-Contract” cellular service provider in the U.S. with over 15 million subscribers. It is the fourth largest cell phone company in the world and the largest in all of the Americas with more than 200 million cell phone subscribers.

 

Responsibilities:

·         Primary responsibilities included working on the requests coming in from sales division which was making changes to the existing process in order to accommodate more users and faster decision making process. That required making appropriate modifications to their existing code packages with procedures, functions to reflect the correct changes.

·         Active involvement in discussions with other team members to enhance the overall architectural solution.

·         Worked on the debugging of the existing PL/SQL procedures, functions and packages.

·         Wrote the shell scripts for effectively deploying new developments to production.

               

Environment Oracle 10g, SQL, PL/SQL, SQL * Loader, XML, UNIX shell scripts, Windows XP, TOAD, Oracle SQL  Developer,  MS SQL Server, MS Access DB, Microsoft Share point Access,  Windows ftp utilities client , IBM's LEI, PVCS (for version control).

 

Malt-O-Meal, Minneapolis, MN, May’08-Sep’08      

   

Oracle Application/Data warehouse consultant

Malt-o-Meal is one of the top 5 cereal manufacturing company in USA with their manufacturing facilities and distribution centers all across USA. The company has its head quarters located in Minneapolis, MN.

 

Responsibilities:

·         Primary responsibilities include the back end support (writing and modifying existing packages, procedures, functions and triggers) for customized ORACLE Application called COSMOS (Customer orders management systems) with working with Oracle forms.

·         Enhancement of the overall Decision Support System.  Making enhancement by writing PL/SQL functions, procedures, packages, triggers, dB links, sequences, views, materialized views to best utilize the CDC (change data capture) functionality of oracle 9i in batch processes and successfully reduced runtime for various CTAS process leading up to the staging schema.

·         Design and developed labor fact table and dimension tables in data warehouse, also used existing dimensions like date reference for labor budget vs. actual through Lawson (it’s an ERP application used by HR).

·         LEI extraction was done using an IBM tool and data was being loaded through that extract into a staging area and from there it was being loaded into DW, through a package, modified that package. By introducing different parameters for tables involved in the staging area.

·         Wrote shell scripts for running/rerunning of the ETL jobs, scheduled jobs were run through Maestro scheduling tool.

 

Environment Oracle 9i/10g, SQL, PL/SQL, SQL * Loader, XML, UNIX shell scripts, Windows XP, TOAD, PL/SQL Developer, Oracle Warehouse Builder 10g, MS SQL Server, MS Access DB, cognos metrics studio, Windows ftp utilities client , IBM's LEI, PVCS (for version control).

 

Humana Inc.  Louisville, KY, Nov’2005-Apr’08  

 

Oracle (PL/SQL) Developer/Analyst/Data warehouse/Data mart Consultant

 

Humana is one of the nation’s largest health insurance providers and is a Fortune 500 company. Humana provides wide range of healthcare services and programs through traditional and internet-based plans to more than 7 million members with an established reputation for quality and superior service.

 

Sales Data mart Architectural Enhancement                     

 

Responsibilities:

·         Developed shell scripts with embedded PL/SQL procedures   to track and monitor data flow , from live enrollment system to Data mart (Oracle 10g running on AIX)

·         Wrote PL/SQL functions, procedures and packages for the data mart process enhancements , used existing reporting tables to create an automated process which would raise alerts about any drop in data from one staging table to another while live  data and platform loads make their way to Data mart.         

·         Develop an automated process for retriggering and reprocessing the dropped data, automated the daily platform load process which was kicked off manually every day.

·         Created an automated process for GSU (Group Setup Utility) delete and refresh in conjunction with the front end developers. Used bulk collection , associative arrays , nested tables , for bulk processing of data which resulted in a performance improvement

PDE Error Tracking                                  

   

Responsibilities:

·         Developing scripts for PDE Errors related ad/hoc requests submitted. The scripts are created in the ad/hoc schema CI_MBRSHIP. Recurring requests are moved to production after data testing.

·         Worked on the retro member related project, developed scripts for that, these scripts are being run manually and load the tables in the ad/hoc schema, these tables are then imported in the MS Access database which queries and delivers the data to user in an easy format. The database is created every week and is sent over.

·         Have been working on the monthly finance table uploads. Where we archive the data for past three months along with loading the data for the current month.

·         Extensively worked on the Claims data for errors, LIS status and DIR rebates.

·         Worked on the data reconciliation between our system and Argus for pharmacy rebates.

 

Medicare Reporting                                              

Responsibilities:

·         Daily operational reporting of Medicare Enrollment Summary (for year 2006) (CI System Comparison to Downstream Processes). The Medicare enrollment data flows from the legacy systems to the EDWPRO through daily mainframe jobs, once the data has been loaded Medicare scripts which were written and moved to production populate the other tables required daily operational reporting. The daily reporting included following.

·         CI membership data based on SSN, card data based on SSN and UMID, CI Argus data based on SSN. Summary and detail of No Card, Request cancelled and in progress card counts based on SSN and UMID.

·         Change report summary and detail (CI System Change Report Summary) from the previous version. Member data change, Card data change and Argus data change.

·         Channel reporting (inventory through various channels). Membership roll forward summary. Reason code summary.

·         With OWB10gR2 created source modules that import data from flat files, relational databases and  these import routines consist of SQL*Loader scripts, external table definitions, database links through to Oracle databases and other databases accessed.

 

C3 Scorecard Ad/hoc requests:                 

Responsibilities

 

·         Created PL/SQL triggers, procedures, functions for processing business logic and gather the data from the database to be used in the reports. Reporting involved generating summaries on a monthly, quarterly, half-yearly and annual basis.

·         Extensively involved in the performance tuning of the queries. Successfully reduced the run time of various scripts after effectively tuning them. Method used were partitioning and indexing of the tables for better performance and faster retrieval of data and for the optimization of the query performance.

 

Environment Oracle 9i/10g, SQL, PL/SQL, SQL * Loader, UNIX shell scripts, Windows XP, TOAD, PL/SQL Developer, Oracle Forms 9i, Reports 9i, Oracle Discoverer 10g, Oracle Warehouse Builder 10g, MS SQL Server, MS Access DB, Windows ftp utilities client

 

CompuCredit, ATLANTA, GA. May’04 to Sep ‘05

ETL Developer

CompuCredit is an information and technology driven provider and direct marketer of branded credit cards and related fee-based products and services offered to prospective customers on an unsecured basis. Responsibilities:

·         Performed data analysis based on the source systems and existing OLTP systems

·         Designed and built mappings and reusable objects using Informatica PowerCenter 6.2.

·         Extensively used Transformations like expression, Joiner for heterogeneous sources, and Look-up, Filter, Normalizer, Aggregator, Update Strategy to transform data into the interface tables and base tables.

·         Created reusable transformations and mapplets to build error free, reusable objects.

·         Used Informatica functions like LTRIM, RTRIM, ISNULL, DECODE, IIF, TO_DATE extensively in the transformations.

·         Worked extensively on Informatica repository manager, Designer, Workflow Manager to create, schedule, monitor and validate data models defined in the ER diagram.

·         Involved in extensive Performance Tuning by determining bottlenecks in sources, targets, mappings and sessions.

·         Performed unit testing to validate mappings, debugged mappings for failed sessions and populated the database. Used the existing mapping in debug mode extensively for error identification by creating break points and monitoring the debug monitor.

 

Environment PowerCenter 6.2(Informatica Designer, Workflow manager, Workflow monitor 6.2, Informatica Repository Manager), Oracle 9i, Sun Sparc, Toad 7.6

 

Other Clients

 

Rothschild Inc., NY, Nov‘03–March 2004, Data warehousing Consultant

Environment:

PowerCenter 6.2(Informatica Designer, Workflow manager, Workflow monitor 6.2, Informatica Repository Manager), Oracle 9i, Sun Sparc, Toad 7.6

 

Washington Mutual, IL, May’03 TO Nov’03, ETL Developer

Environment

Oracle 8.x/9.x, SQL Server2000, INFORMATICA 5.X/6.x (Power Center / POWER MART), SQLloader, Erwin, Shell Scripts, WindowsNT/2000

 

Target Corporation, MN, Feb’ 02-Apr’ 03

Environment

Informatica Power Center 5.1/6.2, Business Objects 5.1, Oracle 9i, shell Scripts, Sun-Solaris 5.8 and Windows NT, MS SQL Server 7.0, MS Access      

                                           

Sprint, KS, Jan’01 to Dec’01,     ETL Developer    

Environment                                                                                                        

Informatica Power Center5.1, PL/SQL, MS SQL, Oracle8i, Windows NT, UNIX Korn Shell Scripts

 

Daewoo Motors India Limited, INDIA, July ’98 to Nov’ 00, Oracle Application Developer

Environment 

Windows NT Client/Server, HP-Unix, Oracle 8, Developer 2000 (Rel. 2), Forms 4.5, Reports2.5, SQL*Plus, SQL, PL/SQL.

 

Education

Indian Institute of Technology, Roorkee, India 1998