Summary

 

·   Over 20 years of experience in IT, 10 yrs as ETL Developer/Architect/Lead with a strong background in ETL Data warehousing using Talend 5.6, Informatica PowerCenter, Pentaho, SSIS and DataStage.

·   Experienced in Planning, Designing and Implementing Data warehouses/Datamarts with experience of both relational & multidimensional database design.

·   Experienced in Informatica Repository Administration, Workflow Administrator and Workflow Monitor.

·   Experienced in Metadata Manager for documenting ETL process and to integrate and consolidate metadata from different resources.

·   Experienced in Informatica PowerExchange for extracting data from Adabase and mainframe files.  

·   Experienced in upgrading the system from Informatica version 8.x to version 9.1.

·   Working knowledge of data warehouse techniques and practices, experience including ETL processes, dimensional data modeling (Star Schema, Snow Flake Schema, FACT & Dimension Tables), OLAP.

·   Worked on Natural Language Processing initiatives with different unstructured and semi-structured sources like Machine-logs, Flat-Files, PDFs, MSOffice documents and RDBMS-CLOBs.

·   Experienced in loading data, troubleshooting, Debugging mappings, performance tuning of Informatica (Sources, Targets, Mappings and Sessions) and tuning the SQL queries.

·   Very experienced in working with various databases like PostgreSQL, Oracle, TeraData, UDB DB2, Microsoft SQL Server, Sybase and Microsoft Access as Sources and Targets.

·   Expertise developing SQL and PL/SQL codes through various procedures, functions packages, triggers, views and indexes to implement the business logics.

·   Strong knowledge in LINUX, UNIX Shell scripting to automate data warehouse jobs.

·   Effective in working relationships with client teams to understand, support requirements and manage client expectations.

·   Team player with good communication skills, written skills, technical documentation skills and also a self-motivated individual with exemplary analytical and problem solving skills.

 

Technical Knowledge

 

Platforms & Scripting: UNIX/AIX, AS/400, Windows (200*/7), Mainframes (MVS, VM/370), OS2.

SOFTWARE:SQL Server, SSIS, SSRS, PostgreSQL, Talend, Informatica, DataStage, Business-objects, Teradata Oracle, SQL-Plus, SAS, Unix/Windows Scripting, Mainframe Tools/Utilities, QMF, SPUFI, NDM/HTTPS/SFTP, MS-Project, MF-COBOL, Testing tools, TOAD, SQLAssistant, SSMS, SQLDeveloper, Pgadmin and MSOffice.

LANGUAGES: Shell-scripting, VBscript, JAVA, C++ C, BASIC, Mainframe based languages, PERL,  PASCAL, VB.Net, Power Builder and Fortran .

EDUCATION:  Master’s in Computer Science & Technology - IIT Roorkee, India (1993-1995)                        

Published AI Research papers Computer Society of India  

Bachelors (Electronics & Communications Systems) - Osmania University, India

 

 

 

 

Professional Experience

 

DataManagement Leader (Data/ETL Architect) @ Cisco (Scry Analytics)                                 Nov’14 – Jun’15

·   Developed Data-architecture, ETL Batch processes in Talend, SQL-server and PostgreSQL for Call-center systems including architecture for parsing documents related to Call-center notes

·   Designed and implemented new environments and ETL frameworks for conformed data delivery and Call-Center-Analytics

·   Worked on Dimensional Models, SCDs, Error-event schema, Audit dimensions to satisfy business requirement and worked with development teams to implement the Data-Models, Mapping-docs and ETL to satisfying technical requirements

·   Designed and developed Loads (full and incremental) and optimized-jobs as part of black-box solutions

·   Led a team of developers and played roles of ETL-Architect, Data-Architect and Scrum Master

·   Worked on evaluation of MongoDB and other NoSQL databases for text-mining from user-forums on website created for cancer-patients

·   Worked on NLP initiatives including keyword proximity analysis when parsing textual call-center data

·   Evaluated Hadoop unstructured information processing frameworks like UIMA, GATE and NLTK(Python)

·   Evaluated Hadoop real-time stream processing frameworks like Storm and SparkStreaming

·   Evaluated Open-source frameworks for real-time audio/video stream processing like Sphinx and Kaltura

·   As an ETL-architect resolved geocoding issues for Caviar-analytics using Pentaho

 

 

 

 

ETL-Lead @ CenturyLink(TekSystems)                                                                                    Mar’14 – Oct’14

·   Led a team of 11 ETL developers and played roles of Lead-Developer, Scrum Master and Project Manager 

·   Upgraded ETL Batch process to Talend/TAC, gained ETL and development process efficiencies 

·   Generated and Performed TIFVAL/QA gating reviews for data-conversion

·   Designed and implemented  new environments and ETL frameworks for network-data conversion and for semi-structured data conversion involving WA-notes/CLOBs

·   Worked on complicated SQL Queries and produced reports using Talend for Source and Target cleanup

·   Worked with Data-Mapping team to implement ETL-code from gathered requirements and Mapping Docs

 

 

 

Business Analyst/Sr. ETL Developer @RMA (KForce)                                                                 Aug’13 – Feb’14

·   Performed requirements analysis for CRBI.

·   Designed and developed mapping documents for ETL (SSIS-2012) batch processes by using Data-profiling, T-SQL.

·   Performed testing for ETL (SSIS-2012) and reports (SSRS-2012) maintenance.

·   Designed ETL-SSIS framework based on requirements meta-data documentation and implemented, more than half of it, for loading historical data.

·   Designed and implemented Parameterized and cascading parameterized reports using SSRS.

·   Created ad-hoc reports using SSRS in developing Parameterized, Drill Down, Drill Through, Chart, Graph, Linked, Dashboard, Scorecards, Drill-down and Drill-through reports using SSRS.

 

 

 

Sr. Software Engineer/Sr. ETL Developer@ Enterprise                                                                Jul’13 - Aug’13

·   Designed and developed ETL batch processes using SAS-DI, Text-miner and Teradata.

·   Designed and developed reports in aiding targeted campaigns using Base-SAS, SAS-Campaign Manager and Teradata.

 

 

Sr. Software Engineer/ETL Architect @ DST Brokerage Solutions                                            Mar’12 - May’13

·   Designed and developed data-acquisition and data-delivery systems using tools (Data-Stage, SFTP, HTTPS, encrypted-FTP) and scripts for DST applications and BARS databases.

·   Led production support of ETL based transaction processing systems and in the process helped re-architect applications and technologies.

·   In the ETL-Architect role evaluated Data-tools for ETL-Development, ETL-testing, BI-Reporting (Cognos, Info-builder), Analytics and Big Data initiatives.

·   In the Enterprise-Architect role helped in establishing enterprise initiatives like Governance, Business-Recovery and IT Roadmaps.

·   Helped setup SLA based reporting on Data-processing systems for acquisition, processing and delivery.

·   Evaluated IBM (Pure-Systems/Netezza), SAP and Oracle vendor technologies in Big-Data initiatives including unstructured and semi-structured data.

·   Helped in modeling Source, Staging and ODS databases for ETL loads.

 

 

 

Sr. Professional/ETL and DB Conversion Architect @YRCW                                                     Jan’03 – Mar’12

·   Developed on SQL Server Databases using Tables, Indexes, Stored procedures, Views, Triggers, user defined functions, cursors, derived tables, common table expressions (CTEs) and Triggers to facilitate efficient data manipulation and data consistency. Written complex SQL statements using joins, sub queries and correlated sub queries. Designed many Packages using SSIS Designer by using Control Flow, Data-Flow, Lookup, Derived Columns, Condition Split, Script-Task, Aggregate, Pivot Transformation, and Slowly Changing Dimensions.

·   Involved in data extractions using SSIS, and designed and produced documentation of data transformations for all extractions. Developed, deployed and monitored SSIS Packages including upgrading DTS to SSIS. Helped design and implement processes for deploying, upgrading, managing, archiving and extracting data for reporting.

·   Designed best practices document for ETL and Reporting Systems using Data Warehouse concepts. Experience in Error and Event Handling: Precedence Constraints, Break Points, Check Points, Logging.

·   Created SSRS reports using Report Parameters, Drop-Down Parameters, Multi-Valued Parameters Debugging Parameter Issues Matrix Reports and Charts.

·   Developed regional-carrier ETL processes for DW/BI and resolved prod issues using Informatica on windows.

·   Implemented ETL based test system refresh process through Informatica and DataStage.

·   In the role of ETL-Architect led EDW Reporting (Business-Objects) team for regional transportation and fulfilled IT-Business liaison roles.

·   Migrated mainframe based (delimited files, VSAM, Eztrieve) based reporting system to SSIS/SSRS.

·   Developed and Migrated MS-SQLServer based DTS Services to SSIS/SSRS for executive management reporting.

·   Designed and implemented ETL transformation of data for PowerForward on National-EDW from Oracle to SQL Server DataMart using Informatica on UNIX.

·   Developed complex T-SQL queries, stored procedures, temporary tables and designed SSIS packages for data cleansing, transformation and loading.

·   Led ETL-conversion effort of Teradata-to-Oracle migration of Regional EDW.

·   Performed metadata management, reporting and administration (including installing JDBC/ODBC drivers) of Informatica and Business-Objects.

·   Setup cyclone (sftp,ftp, oftp) for Informatica-B2B/EDI teams and helped develop their ETL processes.

·   Involved in star-schema data-model build outs for Regional and national EDW and used Data-profiling tools for discovery and data-quality.

·   Evaluated appliances like cast-iron systems and technologies like golden-gate.

·   Developed SAS-AF replacement software to realize annual savings.

·   Automated cross-region DB2-Data-refresh for people-soft using ETL tools.

·   Customized Smart-TS (a google like source-search engine) for Unix, Windows, SQL-server (SSIS,SSRS), AS/400 and Mainframe  platforms for all 3 operating group of companies. Also involved in generating PDF documents and reports regarding the Smart-TS usage. In addition to code also added Smart-TS libraries for searching all business documents like PDFs and Microsoft Office documents.

·   Designed and Developed Code-generators and automated encryption system to encrypt and preserve integrity for People-soft/Payroll test-data.

 

 

Sr. Software Engineer @ DiscoverCard, The Hartford (TRS Staffing Solutions)                       May’98 – Sep’02    

·   Served as a Team-lead, designer and developer for the security conversion project, Disaster Recovery, Vantage-One based Fortis Conversion (VIPS, DR), Bands>100, 101/102 out of sync, Employee Gross-up payment, and other projects.

·   Migrated projects using PRS/Panvalet change managers, SDLC methodology and developed/reviewed Tech/Business and Test/Estimation Specs for these projects and was part of on call support for all the regions.

·   Involved in leading Testing efforts with Win-runner and Load-runner for major projects in different regions (System, Integration, Volume, and User-Acceptance) and preparation of Test Plans, RACF setup and execution.

·   Monitored Test and Production VAS Storage growth to reduce significantly the storage expenses using SMS and TMS. Developed tools for storage analysis, management-reports/emails and to improve productivity for team members in activities like pulls and refreshes for the Test-regions and developer aids.

·   Led ETL team for providing VISTA extracts to mainframe using Oracle ETL Data-Warehouse builder.

·   Involved in application performance tuning with CICS/TS1.3 and Batch systems using history-file expansion, job optimization, Involved in extracting data to PC using TERADATA SQL Assistant/Queryman and generated data mining reports on mutual-fund feeds using SAS.

·   On data-security projects worked as System Security Administrator and architect for conversion project.

·   Led in migration projects: CICS/TS, OS/390, MVS-SYSPLEX-64bit and z/OS VAS Migration.

·   Forecasted the Hardware/Software growth and led the capacity planning for the DST-VAS system.

·   Led teams by managing Projects, helping out in requirements (gathering and analysis), High Level Design, Detail Technical Design, Database Modeling, Interface Design, Defect resolution, Development and Production Support for the latest MERS system and Transaction Tracker System (a Web Based Report Viewing System using MQ, OCI, Java, ORACLE, HTML and using Object Oriented Analysis & Design Methodology).

·   Worked on generating, indexing and archiving PDF Merchant reports using Mobius

·   Fixed major business defects involving handling of unbalanced merchant tree structure in Online and Batch systems for MERS. Involved in performance and tuning on Mainframe. Developed & maintained MERS using IBM Mainframe, AIX and OS/2 products.

·   Involved in scheduling/OPC, Disaster Recovery and project management (MS Project98).

·   Generated meta-data reports on MERS reporting. Involved in Capacity planning, CICS/DB2 and AIX test regions setup.

 

 

Sr. Systems Analyst @Citibank(APN Software Solutions)                                                             Nov’97 – Apr’98

·   Involved in Design and Reviews of the conversion strategy, capacity planning for Y2K-compliant code conversion of the CTS. Addressed all major changes in the design of conversion process as a team lead.

·   Developed all the tools including GDG based processing tools for testing, for manipulation of the IDMS source for CCCA processing using Mainframe Tools, ISPF services, macros and IBM utilities. Coded & Tested COBOL-CICS, VSAM, VTAM-CICS-Macro Assembler programs.

·   Also involved in application performance tuning involving CICS and IDMS Led the team by managing the conversion project using MS Project.

 

 

Sr. Systems Analyst @IBM , TCS (TCS)                                                                                         Mar’95 – Oct’97

·   Maintenance and enhancement of the Assembler code using Expeditor and ISPF for TLM/TMS as a team lead. Tested TLM/TMS with different subsystems like MVS-PARALLEL-SYSPLEX, DB2 and CICS.

·   Involved in project management using MS Project.

·   Developed REXX, CLIST, DIALOG MANAGER Tools as a team-lead for enhancing documentation of the Assembler programs and establishing their call structure for the Tape Library Manager.

·   Also developed Public Key Cryptography on OS/390 platform in LE and worked on VTAM programming.

·   Involved in design, development and testing of ISMF 1.4.0, ISMF 1.5.0 and led the team for automated regression testing of ISMF 1.4.0.