Tomasz Pierzchała

Java Developer & Analyst at Whirly
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Contact Information
us****@****om
(386) 825-5501
Location
Prague, Czechia, CZ
Languages
  • Polish Native or bilingual proficiency
  • English Full professional proficiency
  • Russian Professional working proficiency
  • French Limited working proficiency
  • Dutch Elementary proficiency
Skills

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Krzysztof Piotrzkowski

Tomasz had a very strong drive for programming - he enjoyed all aspects of it, from low to high level coding, and he always tried to get to the bottom of a problem or solution. He was a very valuable collaborator.

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Credentials

  • MS 70-461: Querying Microsoft SQL Server 2012
    Microsoft
    Mar, 2015
    - Nov, 2024
  • Oracle Certified Professional : Java EE 5 Business Component Developer
    Oracle
    Aug, 2012
    - Nov, 2024
  • Oracle Certified Professional : Java SE 6 Programmer
    Oracle
    Jul, 2012
    - Nov, 2024

Experience

  • Whirly
    • Poland
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Java Developer & Analyst
      • Jan 2019 - Present

      Migration of the mobile service provisioning system at Orange Poland to the new technology. • Analysis of the operation of the old system in the context of individual services. • Preparation of analytical documentation. • Analytical support for development. NICE recordings deletion marking system, working in batch mode, driven by input data. • Preparation of a Spring Boot application which runs periodically, a cron controlled working thread, calling database procedures that marks for deletion relevant recordings. • Wrapping as a Windows Service with a Service Manager. Docker pre-speech Analytics System - microservice responsible for initial processing of telephone recordings • Creating of the service concept. • Development using Spring Boot, FFmpeg API with optimized FFmpeg Docker image. Migration of the B2B telecommunications platform in Orange Slovakia to a modern platform based on IMS. • Development of an automatic data migration tools between systems with an intermediate step (MySQL database). • Participation in designing a model for the data structures transformation between systems. • Work in an international environment. Show less

  • ValueLogic
    • Poland
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Software Engineer
      • Aug 2021 - Jan 2023

      Development of the Movello mobile application and its supporting backend • extension of existing views of the React-Native mobile application • adding app translation • adding language versions to the application backend (GoLang) Participation in migration of Zenhomes’ micro services (~50) from GCP to scout24.de platform based on AWS. • Started with the analysis of some of the simplest typical microservices showed the need to pull, the Auth0 JWT tokens from the security layer of the reverse-proxy service at GCP and use it to secure all services at AWS as they are public. • Preparing Proof of Concept one service migration with new CI/CD pipeline. • New settings and final switch to the new environment. Working with recommendation system • Rewriting Python script function into classes with Unit Tests. Show less

  • CRIF
    • IT Services and IT Consulting
    • 700 & Above Employee
    • Software Engineer
      • Oct 2013 - Oct 2017

      Maintaining the internal billing system • Programming requirements related to servicing new contracts both on the data server and frontend side. • Maintenance, bug fixing. Construction of a data warehouse (DWH) that analyzes inquiries to the company's system during a time. • Building of DWH consisting of a fact table combined with five dimensions embedded in the company's system based on JMS queues and a blob system. Creating new PDF reports from HTML based on the XML data model. • Work on XSLT with XPath transformations of XML data to HTML with help of CSS and JavaScript. Creating tests of internal SOAP services. • Designing and building test suites in SoapUI based on service specifications (ensuring full coverage). Show less

  • JCommerce Sp. z o.o.
    • Poland
    • Software Development
    • 100 - 200 Employee
    • Java Junior Developer
      • Jan 2013 - Sep 2013

      Rewriting the GUI of a banking application from C++ to Java (SWT + JFace) in the Eclipse RAP platform. • Work in the Scrum. Rewriting the GUI of a banking application from C++ to Java (SWT + JFace) in the Eclipse RAP platform. • Work in the Scrum.

  • Université catholique de Louvain
    • Belgium
    • Research Services
    • 700 & Above Employee
    • Postdoctoral researcher
      • Sep 2004 - Dec 2008

      • I developed a simulator of the GASTOF (Gas Time Of Flight Cerenkov detector) - a C++ program using Monte Carlo techniques and CERN's ROOT package. The GASTOF is a supporting detector for Large Hadron Collider (LHC) at CERN aiming at 15 ps timing precision of flying by protons. • I participated in the GASTOF's tests in USA (at Fermilab’s site experiment) as well as its analysis using dedicated C++ algorithms with ROOT library. • I carried out analysis of possibility to tight stronger limits on anomalous quartic vector boson couplings in photon-photon interaction at the LHC. • For three years, I conducted exercises of statistics for students of Physics at the UCL in Louvain-la-Neuve. Show less

Education

  • University of Silesia, Department of Field Theory and Particles Physics, Katowice, Poland
    Ph.D in Physics, High Energy Particle Physics
    1999 - 2004

Community

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