IRINA KORZHENEVICH
1500 Sandstone Drive #205
Wheeling, IL 60090
Home: [Send email to request phone number] 19.9837 [Send email using form at bottom] Cellular: 224.805.0086
SUMMARY
A professional programmer-analyst with 12.5 years of American experience. Proven
ability to deliver full-cycle major projects and to significantly improve the
existing software. 2-year experience in support. Excellent analytical,
troubleshooting and problem solving skills. Strong mathematical background.
Excellent communication skills, experience of working with customers. Excellent
knowledge of C, C++, Perl, SQL and shell scripting.
TECHNICAL KNOWLEDGE
LANGUAGES: C, C++, Pro-C/C++, Perl, SQL, PL/SQL, UNIX Shell scripting, SAS,
COBOL, HTML, XML, FORTRAN, PV-Wave, DOD (Data on Demand), TSL (Citigroup
proprietary language)
DATABASES: Oracle, SQL Server, Informix, Access
PROFESSIONAL EXPERIENCE
CITIGROUP, Elk Grove Village, IL 2006 – 2009
Senior Programmer Analyst
Developed software using C, C++, Perl, SAS, SQL, PL/SQL, Oracle, Shell scripts,
TSL (C++ like Citigroup proprietary language) and DOD under UNIX.
· Worked on full life cycle project development including:
o Discussing business requirements with the Customer.
o Developing SAS programs, using SQL and PL/SQL for data analysis
o Making IT decisions and programming specifications for the project.
o Implementing the specifications in programs in C, C++, Perl, TSL and DOD
languages.
o Developing Shell scripts that control the process by running the above
programs.
o Unit and system testing.
o Creating procedures and documentation for implementing the project in
production.
o Investigating production issues and troubleshooting.
o Maintaining the project in production.
· Developed major projects that process credit card payments, minimizing the
risks of fraud and implementing the Company’s policies. The projects are
currently running in production.
· Created tools and utilities for:
o Data flow investigation.
o Incoming data conversion.
Selected Accomplishments:
· Developed five “Citi Payment Float Manager” projects for five credit card
portfolios that processed credit card payments and minimized the risks of fraud.
· Developed four “Unconfirmed Payments” projects that handled credit card
payments made from new checking accounts and minimized the risks of fraud.
· Developed “Buy Deeper” project that allowed a card holder to make purchases
for an amount greater than the credit line.
· Developed “XREF” project that built and maintained an account number – account
ID cross-reference table. It assigned one ID to multiple account numbers related
to the same credit card account. The process runs in production on different
portfolios processing up to 60 million cardholder records per portfolio.
· Developed “Citi Credit Limit Increase” project that created monthly data
repositories for business analysis.
EXLIBRIS-USA, Chicago, IL 2002 – 2006
Support Programmer 2003 – 2006
Applied hot fixes and patches and solved problems on the Customers’ sites by
fixing the existing software (Perl, Pro-C++, PL/SQL, SQL-Plus, Shell scripts,
COBOL, HTML, XML, UNIX, Oracle).
IRINA KORZHENEVICH PAGE TWO
EXLIBRIS-USA (Continued)
Responsible for upgrading of the product to newer versions:
· Scheduled and ran upgrades on the Customers’ sites.
· Provided training for customers who preferred to upgrade the Company product
themselves. Solved their problems and did the troubleshooting.
Accomplishments:
· Significantly improved the existing upgrade package for the Company product
(Perl, PL/SQL, Shell scripts, HTML, XML).
· Created tools for correcting and cleaning data in customers’ databases.
Scheduled and ran upgrades on the Customers’ sites
Implementation Programmer 2002 – 2003
· Created software for converting large-scale libraries and consortia of
libraries to the Company product Aleph (Perl, C, C++, Pro-C, PL/SQL, Shell
scripts):
o Worked directly with customers alone or in a team with a Librarian manager.
o Discussed customers’ needs, analyzed data and wrote specifications.
o Developed and tested software for data correction, conversion and loading.
· Ran conversions of new Customers’ databases to the Company product.
Accomplishments:
· Suggested and implemented a different method to greatly improve the
performance of existing software.
· Created sophisticated tools and utilities for Customers’ data correction.
· Designed and developed the conversion software; converted data of 23 Indiana
academic libraries consortium to the Company’s product Aleph.
· Developed and tested software for converting two other large-scale academic
libraries.
ENDEAVOR INFORMATION SYSTEMS, Des Plaines, IL 1999 – 2002
Programmer Analyst
· Worked with customers on full-cycle projects for data correction in
databases:
o Discussed problems with the Customer and suggested technical decisions.
o Wrote contracts and negotiated Customer’s signature.
o Developed software.
o Copied the relevant part of the Customer’s database for testing purposes.
o Executed the test run and got the Customer’s approval of the job.
o Ran the project on the Customer’s production database.
· Developed and tested software tools for large-scale academic libraries (C++,
Pro-C++, PL/SQL, Oracle, Shell scripts, Perl under UNIX (Sun OS, AIX, Linux))
Accomplishments:
· Developed various tools and utilities for conversion of customers’ delimited
data files into standard MARC record format.
· Created a converter between Australian and US MARC record formats.
· Created and implemented sophisticated algorithms for customers’ data
correction and modification in Oracle databases.
· Created a task management database in Access.
NCH NUWORLD MARKETING LTD., Lincolnshire, IL 1997 – 1999
Technical Analyst
Developed projects on coupon processing (C/C++/UNIX/Windows, SQL_Server
database).
Enhanced and maintained existing software, fixed pre-existing bugs.
Accomplishments:
· Developed a “retailer” server handling queries about retailers.
· Developed a "Snare" project for statistically detecting false coupons.
· Fulfilled a Y2K compliance project for all C/C++ software of the company:
o Re-wrote the standard time C library to use 4-digit year instead of 2-digit
year.
o Replaced standard time functions with the new ones in all C/C++ company
software.
IRINA KORZHENEVICH PAGE THREE
UNITED AIRLINES, Elk Grove, IL 1996 – 1997
Programmer-Contractor
· Designed and developed software for cargo sales forecast at United Airlines
(C/UNIX, SQL, Pro-C, Shell scripts, Informix database, PV-Wave):
o Explored the data statistics in Informix database using SQL and Shell
scripts.
o Researched various statistical algorithms of the forecast.
o Tested the algorithms on old data in Informix database using PV-Wave.
o Chose the forecast algorithm that provided the best prediction for historical
data.
o Developed a package of C programs that implemented the chosen algorithm.
o Wrote User manual for the project and trained United Airlines staff.
BIR TRAINING CENTER, Chicago, IL 1996
Teacher's Assistant
Assisted students in C, C++ and UNIX.
ADDITIONAL EXPERIENCE
RUSSIAN RESEARCH INSTITUTE FOR OPTICAL & PHYSICAL MEASUREMENTS, Moscow, Russia
Scientific Programmer
Worked as the only mathematician/programmer in an electron-optical laboratory (C
and Fortran/DOS).
Accomplishments:
· Created algorithms, designed and developed a package of C programs for
simulation of unique high-speed electron-optical devices and for calculation of
device characteristics.
· Suggested several technical decisions that significantly improved
characteristics of electron-optical devices.
EDUCATION
M.S., Applied Mathematics and Physics, Kharkov State University, Kharkov,
Ukraine
PROFESSIONAL DEVELOPMENT
In-house course in HTML and XML in Endeavor, Des Plaines, IL, 2002
In-house course in SQL Server in Nuworld Marketing, Lincolnshire, IL, 1999
PV-Wave School, Denver, CO, 1997
Programming course in BIR Training Center, Chicago, IL, 1996
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