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Marek Sagan

Software Architect @ GLS IT Services
Luxembourg, Belgium

8 years of hands on web development and DevOps. Self driven, dedicated and problem solving software engineering professional. Passionate and creative about Object Oriented Programming software development.

Top roles

Software Administrator< 2 years

Back-end

Java
Python

Cloud

Amazon Web Services (AWS)
Kubernetes

Front-end

ReactJS

Systems

Linux
Language
Native Polish
Polish
Native
English
Fluent
Czech
Fluent
German
Fluent
Work experience
Since 2020
Software Architect @ GLS IT Services
01 October 2024 - 30 April 2025

Designing and optimizing new and more efficient architecture and technical solutions for the package routing system (Java 21, JUnit, Spring Boot 3, Swagger / OpenAPI, Kafka, Kafka UI).

Lead Software Engineer @ Knappschaft
01 January 2024 - 30 September 2024

Developing new features and leading the team for the non-profit migrant and low income household supporting application (Java 21, JUnit, Spring Boot 3).

Senior software engineer @ Orange Poland
01 March 2023 - 31 December 2023

Working on a sales authentication/authorization system with DevOps support (Java 17, JUnit, Groovy, Spock).

Senior software engineer @ Circle K
01 June 2022 - 31 March 2023

Developing new features for the remote fueling application (Java 17, JUnit, Groovy, Spock).

Senior software engineer @ WorkFusion
01 July 2021 - 30 June 2022

Using and improving Machine Learning algorithms for the core product (Java 8, Groovy, Scala).

Senior software engineer @ Orange Poland
01 May 2020 - 30 June 2021

Coding new features of and tuning the firmware / middleware on embedded systems (Java 7, ReactJS, Google Web Toolkit / GWT).

Education experience
Since 2014
Business Administration @ The Power Business School
01 September 2023 - 30 June 2024

Master of Business Administration (MBA).

IT Project Management @ Warsaw School of Computer Science
01 September 2021 - 30 June 2022

Postgraduate studies in IT Project Management.

Computer Science @ Warsaw School of Computer Science
01 September 2014 - 30 June 2018

Bachelor of Science in Computer Science.

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