Bartosz Siemieńczuk

The experienced full-stack web Java PHP SQL developer


Who I have been working for

Facts About Me


Open to Offers

Desired Salary:

To be Discussed


Polish, English

Education Level:

Bachelor's Degree in Computer Science
(Bialystok University of Technology)

Current Position:

Java Developer


Software Development


Full-stack web development, Java, PHP


Discovering asian culture, Playing acoustic guitar, Playing squash

Professional Timeline

Working hard and making the success
  • November 2018 - present


    Java Developer

    Working in international team in the travel industry: building Java APIs for integration and merchandising of different types of travel services like flights, accommodation, transfers, activities, etc. Consuming and creating complex REST and/or SOAP based APIs, communicating with data suppliers to ensure the integration quality.

  • June 2015 - October 2018

    Comarch SA

    Java Developer

    Working in Public Administration sector: creating solutions for polish healthcare system, The Agency for Restructuring and Modernisation of Agriculture and other local government agencies.
    Implementing backend solutions in Java using Spring, JSF, Liferay. Performing integration tasks and code reviews together with developing new and maintaining existing modules.

  • Feb 2015 - present

    Alpha Leonis

    Full-stack web developer

    Developing websites, content management systems, customer relationship management and e-commerce solutions. Working on projects for such brands as BMW Motorrad.
    Designing complex solutions from scratch, implemented in Laravel PHP framework.

  • June 2014 - June 2016

    Freelance web development

    Multiple projects

    When I first started doing professional software developing I did freelance work - I was working on small web projects, developing customized systems based from scratch on my own code. These were mostly content management systems and website layouts programmed based on provided graphic designs.