I am a junior programmer with experience spanning game development and enterprise systems. I have led and built game projects in Unity as a main programmer and game designer, and I have worked as a junior mainframe developer using COBOL on the z/OS system. I have a background in IT education and have taught programming to children. I thrive in teamwork, value time management, and enjoy blending technical precision with creativity to build well-designed software.

Natalia Kosteczka

I am a junior programmer with experience spanning game development and enterprise systems. I have led and built game projects in Unity as a main programmer and game designer, and I have worked as a junior mainframe developer using COBOL on the z/OS system. I have a background in IT education and have taught programming to children. I thrive in teamwork, value time management, and enjoy blending technical precision with creativity to build well-designed software.

Available to hire

I am a junior programmer with experience spanning game development and enterprise systems. I have led and built game projects in Unity as a main programmer and game designer, and I have worked as a junior mainframe developer using COBOL on the z/OS system.

I have a background in IT education and have taught programming to children. I thrive in teamwork, value time management, and enjoy blending technical precision with creativity to build well-designed software.

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Experience Level

Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate

Language

Polish
Fluent
English
Advanced
German
Intermediate

Work Experience

Intern Unity Developer at Beast Games S.A.
January 1, 2018 - December 31, 2022
Contributed to game development projects using Unity; collaborated with designers and other developers; gained hands-on experience with C# scripting, asset integration, and debugging.
Junior Mainframe Developer at Grafton Recruitment
June 20, 2023 - September 25, 2025
Developed and maintained COBOL/mainframe applications; learned z/OS environment, batch jobs, and data processing; collaborated with cross-functional teams.
Programming Trainer at Giganci Programowania
January 20, 2023 - March 20, 2023
Taught programming concepts and exercises to students; prepared lesson materials and guided practice sessions; supported learners in building foundational skills.
Developer / Project at Non-commercial Project: Death is Only the Beginning (Game Jam 2022)
May 1, 2022 - May 31, 2022
Participated in a game jam project; contributed to game design and implementation; focused on rapid prototyping and collaboration.
Project Developer at School project Ellie
October 1, 2019 - June 1, 2021
School project titled Ellie; worked on coding tasks; languages included COBOL, C#, and Unity; collaborated with peers to deliver functionality.

Education

Add your educational history here.

Qualifications

Technik informatyk
January 11, 2030 - March 9, 2026
PCAP - Certified Associate in Python Programming
July 1, 2020 - March 9, 2026
SCRUM Fundamentals Certified
January 11, 2030 - March 9, 2026
Accent IT Girls Certifications
January 11, 2030 - March 9, 2026

Industry Experience

Gaming, Software & Internet, Education

Experience Level

Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate