Michael Sheffer has over 16 years of experience as an application programmer and system engineer working with Oracle, PL/SQL, SQL, Linux, and COBOL. He has worked on projects involving data warehousing, reporting, and OLTP systems for insurance, shipping, and financial companies. His experience includes database development, performance tuning, and Unix/Linux scripting.

1. MICHAEL SHEFFER
FORT LEE, NJ
msheffermoscow21@gmail.com
skype id: msheffer19
(917)902-6398
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Application programmer, System Engineer with over 16 years of experience in:
• Oracle 9i, 10g, 11g, PL SQL, SQL,TOAD, Sql Loader , Oracle Data Warehousing
• Unix utilities, Korn Shell Scripting , Linux, vi editor, SVN
• Data Warehousing, Cognos, Report Studio, Query Studio, OLTP
• SQL, Cobol/Microfocus Cobol
HARDWARE: Oracle Solaris, Red Hat Linux, IBM PC’s, AIX, HP9000
EXPERIENCE: 01/2015-07/2016
Oracle, Linux, Excel Developer, Consultant,
Euro Ship,
Carlsbad, CA
• Designed and developed database packages, procedures, functions and triggers in
Oracle 11g databases.
• Made enhancements and applied defect fixes in the test shipping system. RDM functionalities:
Distribution, Picking, Inventory Control and Invoice. These changes were developed using Oracle sql,
Linux shell scripting, PL/SQL, Excel 2010 and TOAD.
• Created Technical Design documents for major enhancements and attended Technical Design Reviews
with the owner of the company, gained comprehensive experience in SDLC (Software Development
Life Cycle)
• Improved performance of the Oracle programs by retrieving the Execution plans, creating new
indexes,
rebuilding indexes, introducing hints LEADING(tablename), SORT_MERGE JOIN, HASH_JOIN,
INDEXED,etc. Partitioned tables by Range and by List, used analytical functions RANK,
DENSE_RANK,
RATIO_TO_REPORT, OVER PARTITION BY.
• Heavy use of Linux utilities including but not limited to awk, sed, grep, sort, mailx, mutt and vi editor.
Oracle developer, 02/2014-12/2014
EmblemHealth Insurance Company,
New York, NY
• Participated in enhancement of Customer Acquisition Tool (CAT) application, using
Oracle 11g, sql Navigator, Unix Oracle Solaris.
• Created dozens of new and modified existing Oracle stored procedures, Functions and
Packages. Created new tables, indexes, sequences, performance tuning, used analytical functions.
Introduced new Medicare option for customers, who shop for Family coverage, introduced options
to buy Medicare coverage online, by using VISA, MASTERCARD, without mailing the checks
• Programs adjusted to include affordable care act requirements.

2. • Performed system and unit tests, using sql navigator Run PL SQL Menu, which allows to enter
Input parameters in Text boxes and to check the output parameters from the PL SQL stored procedures
after execution.
Oracle /Unix AIX developer, 07/2013 – 10/2013
Managed Staffing,
Oracle/Unix AIX Developer for Aetna Insurance,
Consultant
Dallas, TX
• Work as an Oracle 11g/ Unix AIX developer for major insurance company, supporting Drugs
Utilization Review system.
• Developed new and maintained existed Oracle Packages, Procedures, Functions, Using PL SQL
Developer tool and sqlplus.
• Deleted data from children tables, to enable foreign keys, that were disabled previously.
• Applications are running on Unix IBM 6000 computer, using the cron file.
• Oracle Procedures and packages are called from Unix Korn Shell scripts, that pass parameters to
them.
• Support of Acute frequency, Retail To Mail, Brands To Generic, Length of Therapy and other
applications.
• Use of Unix utilities awk, grep, sort, mailx and vi editor.
Oracle /Linux RedHat developer, 02/2012 – 06/2013
Highmark Blue Cross Blue Shield,
Pittsburgh, PA
• Worked as a Programmer Analyst to support Medicare Part A System that includes creation of new
Linux scripts, Oracle 11g sql and pl sql.
• This new system includes claims processing for providers that are located in CO, NM, OK, TX, AR,
LA and DE.
• The programs are to be transferred from Highmark Medicare Systems to Novitas Solutions.
• Designed, documented, wrote and debugged 100’s of Oracle scripts, stored procedures and functions
required to complete my various assignments for Highmark.
• Documented, recommended, and implemented effective steps to improve database performance and
partitioning of the tables.
• Wrote Linux scripts that insert mainframe files into Oracle tables using sqlldr,conventional and direct
• Paths.
Direct path:
 disabled integrity constraints, prior to loading of data (Not Null, Unique, Primary
 Key). Differed Index Maintenance, using SKIP_INDEX_MAINTANANCE=TRUE on the sqlldr
 command line.
 Checked Statuses of the Constraints by querying view USER_CONSTRAINTS
 Checked log file after loading of data
 Re-enabled all constraints, by using ALTER TABLE … ENABLE CONSTRAINT …
 EXCEPTIONS INTO ...
 Loaded data, using SQL MERGE, by using “when matched” and “when not matched” options
• Executed Oracle sql, pl sql, Linux utilities.

3. • Worked on improvements and new requirements for various functions of the following applications:
Benefit Integrity System, Appeals Application, Return to Provider, Medical Review Part A,
Inspection Assessment.
Oracle Developer, Tester
City of New York , Department of Finance 09/2011-01/2012
Consultant
• Wrote and Tested Oracle sql for Citywide Payments and Receivables Repository Project (CPRR ),
STARS ( Summons Tracking Accounts Receivable System ).
• These systems were an integral part of the Department of Finance and tracked Red Light Violations,
Parking and Bus Lane Violations, Summonses.
• There were about 14 millions active summonses in Stars.
• Performed comprehensive system test, including the validation of the input data that was loaded
• by Informatica program into the Oracle database.
• Heavy use of Oracle 11g sql, Sql Loader utility and TOAD.
• Performed validation of the data that was inserted into the CPRR database according to the ETL spec.
Created and executed test cases, uploaded the results into Share Point and Rally.
Linux Developer
Higmark Blue Cross Blue Shield, Pittsburgh PA 04/2011-08/2011
Modified existing Linux scripts due to Lotus Notes replacement with Outlook.
Assignment included processing files that were previously sent as attachments that were gziped and moved to
a shared drive.
Hardcoded e-mail addresses were replaced with the e-mail addresses found on the test servers Oracle
database.
Heavy use of Linux utilities including but not limited to awk, sed, grep, sort, mailx, mutt and vi editor.
Oracle developer / Consultant
Harris Teeter,
Charlotte, NC 11/2010-03/2011
• Oracle developer in Merchandising group for Harris Teeter, a major Supermarket Chain.
• Wrote Oracle sql and PL SQL to process vendor products, their description, vendor and store
locations, wrote new and updated existing Oracle stored procedures, Functions and Packages.
• Created jobs in Control M that submit scripts for execution on Unix. Tuned applications by retrieving
their execution plans.
• Created new and changed existing Korn Shell scripts. These scripts contained Oracle sqlplus
• commands to retrieve the data, produced and ftp’d the reports to other unix or windows servers.
Consultant, Cognizant,
Client: Collective Brands (Sportswear Company ) 05/2010-09/2010
Lexington, MA /

4. Oracle PLSQL/ Unix developer on IBM RISC 6000, Unix.
• Wrote Oracle SQL, PL SQL stored procedures, functions and packages for the Retail
Automation System of the Collective Brands Sales Company, OLTP.
• These programs created output files that were transmitted from OMNIA to the JDA system to
compare the sales data in both systems (order numbers, billing dates, sales prices, shipment
dates, shipping addresses, returns, etc).
• Created Unix Scripts on AIX which archived and deleted files, based on the retention periods.
• Used awk, grep, find, cat utilities and the vi editor.
3/2007 – 4/2010
Oracle, Sybase/PL SQL/ UNIX developer, L2 production support for AT&T
Consultant
• Created Oracle 10g sql, stored procedures, triggers, packages and functions. Application calculated
Universal Connectivity Charges for AT&T customers. These charges have been inserted
into Oracle tables and written into files for transfer to a mainframe for further processing.
The batch part of the project was developed using PL SQL and Datastage, an ETL tool. Supported
batch applications running on unix Sun Solaris servers using, Oracle, Sybase databases.
Tuned up Oracle 10g database, partitioned tables, created indexes, materialized views to pre-store
results and refresh them at set intervals, used different optimizer modes: FIRST_ROWS_n,
ALL_ROWS, hints for optimizer: FIRST_ROWS(n), ALL_ROWS, ORDERED,
LEADING(tablename), SORT_MERGE JOIN, HASH_JOIN, INDEXED,etc, retrieved execution
plan and runtime statistics by executing DISPLAY procedure from DBMS_XPLAN package.
• Provided production support, used Remedy tool, traced and solved production problems through log
files using different unix utilities (awk, grep, sed, sort), vi editor.
Users opened tickets in Remedy system, assigned the severity ( from 1 to 4 ), provided the error logs.
I solved the tickets by investigated the problems, changing sql or Unix scripts, closed tickets with the
user permission, documented the resolution, worked as a Tier 3 support person for GCP system,
which was running on Sun Solaris servers and used Oracle and Sybase databases, using cron-tab
utility. Performed production support by solving tickets from Remedy system.Attented Datastage
Training classes.
• Problem troubleshooting, root cause analysis and facilitation of both short and long-term solutions.
Consultant / Oracle Developer / Oracle DBA 1/2003–1/2007
BMW, One Call Medical, Highmark BCBS, BNP Paribas
• Oracle developer using TOAD, Tivoli, PL SQL on UNIX/Linux servers on Data
Warehousing/EDI/Financial projects.
• Populated Oracle staging tables with the data form the ASCII files, using sql loader utility,
with the conventional and direct path load.
• Created Oracle External tables to load data into the database.
• Developed Oracle PL SQL stored procedures, functions, packages using the debugging features of
TOAD and SQL Navigator.
• Converted DB2 stored procedures to Oracle stored procedures.
• Extensive use of UNIX utilities (awk, sed, grep, sort ) and vi editor.
• Developed reports in Cognos for Novartis Marketing department.
Tesia Corporation, New York, NY 10/2000– 11/2002

5. Programmer/Analyst
• Participated in the development of moderate to complex applications that process automated bill
payments and claims. Wrote new and maintained existing programs using Microfocus
Cobol/AcuCobol , SQL.
• Converted programs from UNIX and DOS operating systems to Windows NT. Development has been
performed on Windows NT and UNIX operating systems.
Long Island Rail Road (LIRR), Queens, NY 2/2000 – 9/2000
Consultant
• Maintained and supported Warehouse Management System, designed and provided easy to use
Purchase Order entry screen that will enable users to create purchase orders and effectively
communicate with LIRR suppliers.
• WMS's purchase orders supported both one-time deliveries as well as scheduled or blanket deliveries.
• Allowed to coordinate drop shipments to other service providers/suppliers.
• Created Customer Service Reports, Inventory Reports, Planning Reports, Production Reports, and
Financial Reports.
• Improved customer service levels. Data accuracy and inventory accuracy both improved. Mistakes are
pushed to an absolute minimum.
• Deliveries are timely, shipments are accurate and customers stay satisfied. This results in avoided the
very costly problem of having limited supply of the parts in the warehouse.
• Microfocus Cobol/CICS is implemented as a front end, Oracle 8 as a back end, UNIX (AIX version
4.3.2.0) as an operating system.
Pierce Technology, Monvale NJ 10/1997 – 12/1999
Consultant
• Maintained and supported Time Detail System, for major accounting Company (KPMG LLP), this
system was written in MicroFocus Cobol 2.
• Heavy user support based on the implementation of the Remedy system. Used Microfocus workbench
to write the source code, Animator to debug programs, Workbench File Loader (WFL) to recover
corrupted indexed files and to convert data files from EBCDIC to ASCII format.
• Provided QA for Y2K compliance of Time Detail System programs.
UPS, Mahwah NJ 6/1992 – 6/1997
Programmer
• Wrote programs in MicroFocus COBOL II, Cobol 2, APS, C with SQL to process data from
various tables using Watch, Step, setting conditional Breakpoints and Zoom. Both character based
and GUI based versions are implemented.
• Maintained DB2 data using SQL Insert, Update and Delete statements for embedded and interactive
formats.
• Created and maintained hundreds of programs for Automotive and MaxiShip applications.
These programs were written using the Client/Server Architecture; tested and ran with the workbench
animator.
EDUCATION:
MS Degree in Engineering, Moscow Auto-Mechanical College
Ramapo College, C programming class, Mahwah NJ
Bergen Community College, Oracle 10g DBA on Linux class, Paramus, NJ

6. Cope Institute, Advanced course in Computer Programming, Diploma, Brooklyn, NY

7. Cope Institute, Advanced course in Computer Programming, Diploma, Brooklyn, NY