tomasz_cwajda_CV_eng

Tomasz Cwajda
Nationality:
Home address:
Polish
ul. Łukasińskiego 54A
71-215 Szczecin, Poland
Mobile phone: +48 601-72-81-29
E-mail: tcwajda@gmail.com
Skype: tomek.cwajda
Linkedin: http://linkedin.com/pub/tomasz-cwajda/b/b27/b9
Profile
Highly motivated, ambitious software engineer with over 15 years of experience in large database
architecture, programming and optimisation. Driven by data analytics and performance metrics.
Finds lots of fun in implementing most efficient algorithms with fewest possible resources. Open
minded, capable to work alone or in a team and manage significant size projects with care of
every smallest detail. Interested in data mining, warehousing and NoSQL databases. Fast and
happy getting familiar with knowledge and technology.
Technical Skills
Databases MS SQL (10 years), Oracle (3 years), Informix (1 year), MySQL, Firebird,
PostgreSQL, Paradox, dBase, MS Access
NoSQL MongoDB (only my own study )
ETL SQL Server Integration Services, DTS(MSSQL2K)
Data Mining Microsoft Analysis Services, Rapid Miner
Analytics Google Analytics, Nielsen Reports, Solver, Statistica
Caching Memcached
Languages Delphi (5-years),C#,Visual Basic 6, Java, Fortran,Algol,Clipper, Lisp,C,
Assembler
Reporting SQL Server Report Services,Crystal Reports
Web Languages HTML5, JavaScript,ActionScript,CSS, XML, XPath, XSL, XSLT
Project Management Trac, JIRA,TFS (Team Foundation Server)
Source Management Git,TFS, SVN,CVS,VSS
Scripting Bash,Windows Shell
Education
2004 - 2007 University of Szczecin, Poland
Faculty of Economics and Management
Econometrics, 3-years studies

Tomasz Cwajda | tcwajda@gmail.com | +48 601 728 129
1984 - 1991 Szczecin University ofTechnology, Poland
Faculty of Mechanical Engineering
Ship Automation, 5-years MSc studies
Working experience
June 2014 - (actual place of work)
Company Employed in Infovide-Matrix - Outsourced to PGE Systemy Data
Warehouse Department
Project Migrate ETL system supplying data to ForecastTrade Balance Of Electric
Power
Technologies MS SQLT-SQL, SQL Server Integration Services, SQL Agent Services, C#,
Team Foundation Server , ExcelVBA, R,Windows Host Shell
Position Developer Consultant
Tasks  Migrate system consisted of many (over 50) heterogeneous sources of
data, mainly fetching data from internet crawlers.
December 2013 – April 2013
Company Infovide-Matrix
Software House.
Project Analysis of Medical Registers – project on commission of Implementing
Authority for European Programmes ( http://www.wwpe.gov.pl/ )
Technologies MS SQLT-SQL, SQL Server Report Services, SVN
Tasks  Innovative project of database to provide flexible and quick solution for complicated
and huge questionnaires.
 Implement questionnaire (MS Excel )
 Develop, implement and manage the data supply from filled questionnaires
 Data clearing and normalizing
 Implement journaling mechanism in database
 Project and implementation of many reports (SQL Server Report Services)
 Administer and deploy
 Supply documentation
 Write for internal use an manual for programmers about SQL Server Report Services
– covering all most common aspects, to guide quicker education and becoming

familiar with Report Services projects like.
August 2013 – November 2013
Company Infovide-Matrix - seconded to work in PKP Informatyka and PKP SA
Software House.
Technologies MS SQLT-SQL, SQL Server Integration Services, SQL Server Report
Services, C#,Webservices,TFS, SVN
Tasks  Repair abandoned by other company and continue the work to the finish with
application managing import/export data between SAP, OCR type of application and
Document Workflow application type using web services and/or flat files.
 Deployment to the production environment
 Supply documentation
 Participate in tests and help with problem solving.
 Active help in performance tuning of SQL code used by reports realised in Report
Service.
 Conduct staff training in the area of SSIS and provided solutions in the process of
importing and exporting
July 2008 – July 2013 (5 years)
Company WAYN.COM – Where AreYou Now? Limited
http://www.wayn.com - travel and lifestyle social network designed for
members to meet others, keep friends informed of their whereabouts and
activities, and share experiences.
Technologies MS SQLT-SQL, Memcached,Visual Basic 6, HTML5, JavaScript, CSS, SVN,
Git,Track, Jayne, Google Analytics, Nielsen Reports
Position Data Analyst & SQL performance tuning

Tasks  Design and implement methods of querying and extracting data from SQL databases
 Track quality and success ratio based on data research against defined requirements
 Provide daily, weekly and monthly reports with key product metrics and estimating
future trends
 Supply clearly presented campaign stats to the sales team to help them manage
marketing campaigns and deals
 Supply stats on multi-variant UX tests and site performance to the product team to
help them refine product offerings and improve site performance
 Analyse product usage data and provide recommendations to the development team
on how to improve performance and efficiency
 Performance tuning for MS SQL database servers
 Monitor and maintain crucial performance issues in the database layer
 Being proactive in work and take care of the site as a whole. If there is a place for
improvement, propose it to the line manager
 Working with project team to secure the best possible quality
Achievements  Awarded with Golden WAYN twice, for brilliant achievements within the
organisation.
 Developed numerous analytical reports, of which the biggest were series of auto
generated cohorts engagement analysis in many aspects of activity and
demographic contexts,
 Significantly lowered CPU and disk consumption by optimizing numerousT-SQL
procedures and databases structures in few cooperating servers,
 Developed automatic monitoring mechanisms watching key parameters and alerting
people assigned to work with certain type of issue,
 Moved some most complicated logic from application to the database layer, which
resulted in significant performance boost and lower database requirements,
 Built set of functions, procedures and other mechanisms involving tables with
statistics, auto calculated fields, indexes etc, to provide spatial proximity to many
aspects of application.
 Implemented many search functionalities – most of them was very complicated and
difficult to meet high time of execution requirements.
 Designed and implemented subsystem to automatically detect spammers and
scammers activity.

July 2005 – July 2008 (3 years)
Company Profi-Data Sp. z o.o.
http://www.profidata.com.pl/en/start - software house delivering products
for insurance, banking and transport businesses - owning ISO 9001
certificate
Technologies PL-SQL (3 years), Delphi, Java, SQL, Oracle, Informix (a year of
programming) , MS SQL, Firebird, XSLT, XML, XPath, CVS,VSS, JIRA,
HTML, CSS, JavaScript, SAP
Position Designer, Analyst, Programmer
Tasks  Design new functionality - prepare technical documentation with cooperation of
business specialists from Allianz Poland.
 Implement database layer in PL-SQL (Oracle)
 One year outsourced toTUiR WARTA S.A. IT Department – migrate reports to new
financial system, implement new reports (SPL-SQL Informix, Bash)
 Implement off-line version of main product of Profi-Data for Allianz for insurance
agents (Borland Delphi, MSSQL)
Achievements  During my work atTUiR WARTA S.A. I was able to deliver outstanding speed increase
of huge reports by factoring and parallelizing batches of queries in one processing
report – for example duration of one of the reports decreased from over 6 hours to 30
minutes.
 Prepare documentation of few big projects for Allianz and co-authored of several
others.
1997 – 2005
Company Hors-Pro Sp. z o.o.
Technologies Turbo Pascal, Borland Delphi, PHP, MSSQL, MYSQL, MS Access, ADO, JRO,
SMO, HTML, XML, Web Services, JavaScript, ActionScript.
Position Founder
Tasks Series of applications covering:
 estimate of build costs,
 personnel and payroll registers,
 warehouse operations economy,
 medical laboratory and patients evidence.
Achievements Designed and implemented application for staff management (Delphi, MSSQL, MSAccess
using among others: ADO, Server Management Objects - SMO, Jet Replication Objects –
JRO, Report Builder).

1995 – 1996
Company Art Agency KANTARO
Position Programmer, manager
Tasks  Build application to manage contacts, artists and their concert routes (VBA, MS
Access)
 Managing team of 5 people
1993 – 1996
Company Ars KOMFORT Sp. z o.o.
Sale and installation of sport coverings, carpeting and office furniture.
Position IT Specialist
Tasks  Maintain and evolve IT infrastructure (software and hardware) to meet company
growth and employees demands.
 Prepare financial analysis and reports in co-operation with Department of Finance.
 Train office workers for the technologies and tools used in the company: Novell,
Windows, Word, Excel, AutoCAD, AutoVision and others.
Achievements  Modified warehouse evidence application to satisfy denomination needs (company
owned source code of this application written in CLIPPER).
 Implemented pioneer e-mail subsystem – it was the early beginning of Internet in
Poland.
1991 – 1993
Company DMZ CHEMAK Sp. z o.o.
Software house specialising in IMB AS/400 computers (software, hardware,
training – among othersCASE Adelia)
Position Programmer - often acting independently
Tasks  Test new technologies,
 Test possibilities of CASE Adelia for AS/400 ported on PC computers usingVisual
Adelia in its early stages (OS/2 system),
 Design and build computer networks using NOVELL Netware,
 Implement digital communication system to transfer data between divisions of
Regional Cars Evidence system.
 Service of all divisions of Regional Cars Evidence in all districts of region (hardware
and software).
Achievements  Co-author of the system transferring data owned by Instytut Meteorologii i
Gospodarki Wodnej from ODRA computer to IBM AS400 through CENTRONIX port.
 Implemented automatic communication system, which was using grid of modems to
transfer large amount of data.

Trainings
2007 Oracle 10g: Advanced PL/SQL
Oracle University
2006 Novell Active Directory
University of Szczecin
1994 AUTOCAD R14
Aplikom 2001 Sp. z o.o.
1992 CASE Adelia (AS/400 and IBM PC OS/2)
DMZ-CHEMAK Sp. z o.o.
1991 RPG programming (DB2 AS/400)
DMZ-CHEMAK Sp. z o.o.
Certification
2007 Oracle 10g: Advanced PL/SQL
Organisations
2008 - Now Polish SQL Server User Group
http://plssug.org.pl/
Co-founder of the branch in Szczecin. Organised and participate in many PLSQL
conferences, eg. SQLDay
2001 - 2004 Annual Symposiums of Delphi Programmers
Co-organize conferences and participate in Annual Symposiums of Delphi
Programmers. Active Delphi and database mentoring on Delphi users
newsgroups: pl.comp.lang.delphi , pl.comp.lang.delphi.bazy-danych.
Participate in many conferences organized by Borland Polska.
2002 - Now Union of Horse Fans – co-founder member
Languages
 English – fluent
 German – elementary
 Polish – native

Interests
A lot of my interest are connected to my work: econometrics and all-around of data exploration,
statistic analysis, data mining, fraud detection, etc.The other major area of my professional
interest is connected to SQL and database performance tuning of SQL (algorithmically or
structural).
I'm big fan of horses and horse riding (I owe one), also excited dancer: salsa, bachata or kizomba
on quite high skill level, and similar to many other individuals love books, music (favourite: Herbie
Hancock , Miles Davies, James Brown, Jamiroquai). If I don’t ride a horse I usually engage in my
free time in some other sport activities like: skiing, biking, windsurfing, kite surfing or
rollerblades.
Wyrażam zgodę na przetwarzanie moich danych osobowych zawartych w ofercie
pracy dla potrzeb niezbędnych do realizacji procesu rekrutacji zgodnie z Ustawą o
Ochronie Danych Osobowych z dnia 29.08.97 (Dz. U. Nr 133 poz. 883)

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