Marcin Kisielewski

Senior Software Engineer

VeriFone•  January 2015 - October 2023

Implemented multithreading payment applications in C++ for Verifone Engage terminals, covering various payment methods and integrating with fiscal cash register systems. Added handling for external devices to the terminal, such as barcode and check readers. Implemented internal communication with other applications on the terminal. Provided support for payment applications in C on Verifone Verix terminals. Maintained and refactored older repositories to a new architecture. Supporting python script that was around the source project and was related with downloading and creating project solution. Led and collaborated with an international team based in England, Italy, Portugal, India, Latvia and Poland. Communicated with other teams to improve existing libraries and programs or provide new features. Gathered requirements from the product owner and managed the backlog. Verified new requirements according to VISA and Mastercard Mandate modification. Used Collis/UL Test Tool software to verify features. Shared knowledge with new team members and maintained clean code on the GIT repository through pull request mechanisms. Released new versions of the application via Jenkins and Confluence to create SRN. Worked closely with Manager and team to estimate new program feature.

Software Engineer

DMT•  October 2011 - January 2015

Implemented fuel card payments system (UTA, DKV, BZA) on INGENICO terminals in C. Developed systems for selling mobile top-ups on Ingenico terminals and custom ARM-based constructions. Creating technical documentation for the application. I managed to implement the use of GIT in company. I expanded the company's knowledge used Confluence.