Rafał Chałupnik

Senior Backend Developer & PhD student

About Me

Senior .NET developer with over five years of experience. Passionate about exploring new skills and technologies, with positive attitude and a strong willingness to learn and self-improve.


Technical skills:

C#/.NET Software Architecture Git/TFVC AWS/Azure Jira/Azure DevOps TeamCity/Azure Pipelines Oracle/SQL Server/PostgreSQL React/Vue.js Swift

Soft skills:

Willingness to learn Problem analysis & solving Teamwork Technical leadership Recruitment

Languages:

Polish (native) English (C1) Spanish (A1)

Experience

Shiji Group

Senior Backend Developer

June 2024 - Present

The company is delivering complex all-in-one hotel management software for hotels around the world. My responsibility is to make sure other hotel-related sites can reliably integrate with our software, thus extending the reach of hotel chains to potential customers.

Titian Software

Senior Software Engineer

September 2021 - May 2024

I’ve been promoted to the Senior Software Engineer role. The scope of my responsibilities was the same, with addition of tech lead role in projects and more software architecture design involvement.

Titian Software

Software Engineer

August 2018 - August 2021

The company is delivering sample management software to the biggest pharmaceutical companies in the world. I was responsible for development and maintenance of the software, especially in terms of system integration (integration with vendors + developing REST APIs). Also, I’ve been responsible for the technical evaluation in the recruitment process and slightly engaged in company’s IT administration.

KRD BIG S.A.

Junior .NET Developer

September 2017 - November 2017

The company is holding one of the biggest databases containing information about debts and debtors. I was responsible for maintaining and developing SoA applications. This was my first commercial experience during BSc studies and it turned out to be difficult to simultaneously work and study back then.

Education

PhD Information and Communication Technology

Wroclaw University of Science and Technology

October 2020 - Present

MSc Computer Systems Design

Wroclaw University of Science and Technology

March 2019 - July 2020

BSc Computer Science

Wroclaw University of Science and Technology

October 2015 - January 2019

Publications

14th Asian Conference on Intelligent Information and Database Systems

Ho Chi Minh City, Vietnam

2022

Using Brain-Computer Interface (BCI) and Artificial Intelligence for EEG Signal Analysis

Jakub Kurczak, Katarzyna Bialas, Rafal Chalupnik, Michal Kedziora

IEEE Transactions on Human-Machine Systems

2022

Multifactor Authentication System Using Simplified EEG Brain–Computer Interface

Katarzyna Bialas, Michal Kedziora, Rafal Chalupnik, Houbing Herbert Song

The 36th International Conference on Advanced Information Networking and Applications

Sydney, Australia

2022

The 14th International Conference on Advances in Computer-Human Interactions

Nice, France

2021

14th International Conference on Dependability of Computer Systems

Brunow, Poland

2019

Correspondent Sensitive Encryption Standard (CSES) Algorithm in Insecure Communcation Channel

Rafal Chalupnik, Michal Kedziora, Piotr Jozwiak, Ireneusz Jozwiak

A Little More About Me

Alongside my interests in software engineering some of my other interests and hobbies are:

  • Photography
  • Automotive
  • Music
  • Travelling