Mariusz Przewoźny

Co-Owner at IT Factory sp. z o.o.
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Contact Information
us****@****om
(386) 825-5501
Location
Warsaw, Mazowieckie, Poland, PL

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Konrad Hoszowski

Exceptionally competent and angelically patient I had the pleasure of working with Mariusz for several years at Impaq. I was always amazed at how quickly Mariusz was able to propose the right technical solution and patiently find out what the customer really needed. We survived several difficult and grueling projects together and Mariusz was always the bastion of positive attitude. I sincerely recommend Mariusz as a professional partner and a colleague :)

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Credentials

  • AgilePM Foundation
    APMG International
    Jan, 2016
    - Sep, 2024
  • Oracle Certified Associate - Oracle 10g Database Administrator
    Oracle
    Jan, 2013
    - Sep, 2024
  • Oracle Database SQLExpert
    Oracle
    Feb, 2011
    - Sep, 2024
  • PRINCE2 Fundation
    APMG International
    Jul, 2010
    - Sep, 2024
  • Sun Certified Business Component Developer (SCBCD)
    Sun Microsystems
    Jan, 2010
    - Sep, 2024
  • Sun Certified Web Component Developer for Java 2EE (SCWCD)
    Sun Microsystems
    Nov, 2009
    - Sep, 2024
  • Sun Certified Programmer for the Java 2 platform 1.4
    Sun Microsystems
    Mar, 2006
    - Sep, 2024

Experience

  • IT Factory sp. z o.o.
    • Co-Owner
      • Aug 2018 - Present

      Co-creating the vision and development strategy of the company in the short and long term, both in terms of business and technology. Making investment decisions and implementing management and operational processes in the company. Setting the direction for the development of technical competences and responsibility for hiring and managing teams of developers. Preparation of technical content for the offers creation. Valuations, selection of the technology stack and preparation of software architecture. Collaboration with customers, suppliers and partners. Show less

  • Allianz Insurance
    • United Kingdom
    • Insurance
    • 700 & Above Employee
    • Software System Architect
      • Feb 2014 - Jul 2018

      Close cooperation with all parties involved in the project, e.g. Project Manager, Business Analyst, System Designers, Business, Domain Architects. Preparation of business analysis and solution architecture, support at the test stage and solution stabilization Defining functional and technical requirements for new and existing products Preparing valuations of changes in systems and applications Ensuring best practices in team. Very good knowledge of technology: Java, Spring/Spring boot, CXF, Hibernate, JMS, Oracle, Consul, Elasticsearch, Kibana, Docker, JavaScript/Typescript, HTML5, Angular 10, RxJs, Ngrx Show less

  • Nokia Siemens Networks
    • Telecommunications
    • 1 - 100 Employee
    • Senior Software Developer
      • Apr 2012 - Jan 2014

      Development and support of VAS applications for Polkomtel and Sunrise mobile operators. Migration VAS applications for Swiss Sunrise mobile operator to the new JAIN SLEE jNetX platform. Ensuring best code practives in the team and performing source code validation. Identifying bottlenecks, optimizing processes on telco platforms and delivering rollout plans. Development and support of VAS applications for Polkomtel and Sunrise mobile operators. Migration VAS applications for Swiss Sunrise mobile operator to the new JAIN SLEE jNetX platform. Ensuring best code practives in the team and performing source code validation. Identifying bottlenecks, optimizing processes on telco platforms and delivering rollout plans.

  • IMPAQ Sp. z o.o.
    • Poland
    • Software Development
    • Senior J2Ee Programmer / Developer
      • Jan 2008 - Mar 2012

      Hurtownia CIS - ERA (T-Mobile)• new applications development for the CIS warehouse,• optimizing ETL processes in warehouse,• support migration CIS warehouse to new Unix platform• performing code review against best practicesMain technology: Java, Struts 2, Spring, Hibernate, PL/SQL, C/C++. Pro*C/C++, bash, Oracle 10g, WebSphare, Toad, Eclipse, maven, SVNData Warehouse Optimization - ERA (T-Mobile)• over 4TB data reorganization in the CIS warehouse,• optimizing and auditing tables indexes (detection of unused indexes, partitioning, etc.),• detecting unused tables and data compression• modification of ETL processes to enable data compression and speedup• rebuilding indexes and tables, including moving data segments between tablespacesMain technology: SQL, PL/SQL, Oracle Advanced Queuing, Oracle 10g, C, Pro*C/C++, JavaR&D - NSNResponsible for:• prepaid system development and integration with voucher-based systems,• implementing various integrations with external web services based on SOAP protocol and security mechanism,• creating reporting module as well as reports for fraud detection,• preparing data aggregator jobs for optimizing report generation and delivery, • automating system installation process and database provisioning using the Siemens propetary framework (conceptually similar to docker) • continuous integration and test automation as part of the build process.• code reviewMain technology: Java, JSF, EJB 2.1/3, Seam, Spring, Spring MVC, html, css, JavaScript, JAX-WS, SOAP, JNDI, Hibernate, JasperReports, SQL, PL/SQL, Oracle 9i, JBoss, maven, selenium, FitNesse, Clear Case, Hadson (Jenkins) Show less

    • J2Ee Programmer / Developer
      • Feb 2006 - Jan 2008

      Prepaid system upgrade - NSN• porting product customizations from the existing system to the new version,• adding locale support for Arabic language along the application, including GUI, reporting and notification modules• optimizing customer accounts provisioning process in prepaid system,Main technology: Java, EJB 2.1, Spring, Spring MVC, Hibernate, JasperReports, SQL, MySQL, JBoss, Maven, SVNCRF Reports - ERA (T-Mobile)Responsible for:• design of new sales reports for the Prepaid Analysis System.• analysis and optimization of execution plans for SQL feeding reports.• solving performance problems of existing sales reportsMain technology: Java, JDBC, Jasper Reports, SQL, PL/SQL, Oracle 9iADSS - Allianz Direct (Allianz)Development of the direct sales portal for insurance products for the regions of Hungary, Poland and the Czech Republic.Responsible for:• implementing core account management functionalities for ADSS system,• implementing various CallCenter functionalities for BackOffice module• implementing mail notifications based on templates and attachments• detection, analysis and solving bottlenecks between application and Oracle database (SQL, ORM and index optimalization),• preparing templates for quotation and policy pdf documents using jasper reports with embedded fonts, image resources and localization,• creating and optimizing migration process of client accounts and their insurance products (region Hungary, speed up process from 7 to 2 hours),Main technology: Java, JSF, MyFaces, RichFaces, Dozer, Quartz, Velocity, Spring Framework, Axis WS, JasperReports, Hibernate, SQL, PL/SQL, Oracle 9i, Weblogic, maven, SVNHEYAH project - ERA (T-Mobile)Responsible for:• development, optimization and stabilization of the Heyah portal• optimization of SQL queries and data fetching to the application.• solving frontend problems between various browsersMain technology: Java, Struts 2, EJB 2.0, Hibernate, Oracle, ant, SVN Show less

  • HP
    • Azerbaijan
    • Online Media
    • Programmer/Analyst
      • Aug 2004 - Jan 2006

      Programer/Analyst in the department's Global Delivery Application Services, responsible for building and supporting the Data Warehouse activities at one of the major HP customers (second and third level support), maintenance of application, errors handling, processing and reporting. Optimization of processes generating daily reports for business based on data from Data Warehouse. Support for Source Code Management Platform (“Harvest” by Computer Associates) serving over 800 users globally (speed up release process). Responsible for training and implementation of new team members. Show less

  • PKP Polish Railway Lines S.A.
    • IT Specialist / Programmer
      • Feb 2002 - Jul 2004

      Responsible for: • creating ETL processes supplying the database from various types of data sources (xml, csv, external systems, etc.). • creating tools for generating periodic and ad-hoc reports commissioned by business. • automaiting processes for document management system • participation in an international working group dealing with the integration of data from railway infrastructure (UIC). Main technology: Java, Swing, JSP, Struts, Html, CSS, XML, JDBC, SQL, MySQL, T-SQL, MS Server, Perl, VBA, ant Show less

  • Agora S.A. – INP Department
    • Programmer/Designer
      • Apr 2000 - Jan 2002

      Member of the INTERNET project team responsible for designing and developing from the scratch of the gazeta.pl portal. Responsible for: • developing various tools supporting publication of articles on website, • creating automatic ETL processes for data import to database (dictionaries, announcements, tv programs, articles (quark), etc.), • creating widget on gazeta.pl portal such as TV program, calculators, bookmarks, • support for the electronic edition of wybocza.pl Main technology: Java, jdbc, JSP, Servlets, Html, CSS, XML, Weblogic, Oracle 8i, SQL, PL/SQL, perl, bash, Apache server, Netscape NAS (as xml database) Show less

Education

  • Warsaw University of Technology
    Master of Science, specialty Computer Engineering
    1995 - 2001

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