Freelancer profile translated to English.

Description

Full-Stack Web Developer with a focus on React, Next.js, Node.js, and PHP.

I have over a year of practical experience in developing enterprise software with plain PHP and Ext JS, as well as in my own full-stack projects with modern JavaScript technologies.

I accompany projects from conception to implementation and value clean architecture and maintainable code.

I am currently a bachelor student and simultaneously develop professional web applications for clients.

Languages

Polish
Native or bilingual
German
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

SOLIT Gruppe
Working Student Software Development
March 2025 - Today (1 year and 3 months)
Wiesbaden, Germany
• • Participation in extensive enterprise software based on PHP (backend) and Ext JS (frontend)
• • Implementation of backend functionalities as well as frontend components within ongoing tickets
• • Analysis, implementation, and documentation of requirements from the business department
• • Error analysis, bug fixing, and optimization of existing code structures
• • Support in the further development and maintenance of existing modules
• • Close cooperation with developers, project managers, and other specialist departments
• • Participation in technical and procedural topics in the context of IT security and ISMS (ISO/IEC 27001)
PHP Ext.js Symfony Git Docker
IT For You
IT Support
June 2019 - June 2020 (1 year)
• • Customer contact and consultation
• • Installation and configuration of Windows operating systems
• • Installation and setup of various software solutions
• • Execution of new installations (hardware and software)
• • Diagnosis and troubleshooting of hardware and software problems
• • Assembly and configuration of computers

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Bachelor of Applied Sciences
Darmstadt University of Applied Sciences
2026
Bachelor Angewandte
Technical College Diploma
Friedrich Ebert Schule
2019
Fachabitur

Check out Krystian's education

Web Designer

Krystian Sadlo

Full-Stack Web Developer (React, Next.js, Node)

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