Full-Stack Web Developer with a solid foundation in front-end (HTML, CSS, SASS, Bootstrap, JavaScript, jQuery, React) and back-end technologies (Node.js, Express.js, PHP, Python, REST APIs, SQL, MongoDB). Skilled with tools such as Git, GitHub, Firebase, Heroku, VPS, and Hostinger, and focused on building reliable, high-quality web applications.
Summary
Karoly Hornyak
I am a dedicated Full Stack Web Developer with extensive experience in both front-end and back-end development. My skill set includes technologies such as JavaScript, ReactJS, SASS, NodeJS, Python, PHP, SQL, and MongoDB. I have a proven track record of developing custom web applications, optimizing website performance, and ensuring cross-browser compatibility. I thrive in both collaborative and independent settings, consistently delivering high-quality, innovative solutions. My commitment to continuous learning and staying updated with industry trends ensures that I bring the best practices to every project.
Education
Full-Stack Web Developer
2023 - 2024
IT CAREER SWITCH
Progressing from intermediate to advanced, I studied web development (HTML, CSS, JavaScript) and advanced topics (responsive design, interactive websites). I became proficient in front-end technologies (React, Redux, jQuery) and version control (Git, GitHub). I built back-end services with Express.js, handled user authentication/authorization, and worked with relational databases and advanced PostgreSQL/SQL. I also learned Python, PHP, API development (Swagger, OpenAPI), web security, and DevOps fundamentals. I studied complex data structures and algorithms.
Web Developer
2020 - 2021
PROGRAMOZASKARRIER.HU
Progressing from zero to intermediate, I studied HTML and CSS, including Flexbox and Grid, gained proficiency in JavaScript and Python, and used Bootstrap for responsive design. I managed Databases, learned IT Fundamentals, JSON, and APIs. I developed server-side applications with Node.js, practiced version control with Git and GitHub, and worked with SASS, TypeScript, and Django. Additionally, I gained experience with React and studied UX/UI and Web Design.
Mechanical Engineer (BSc)
2000 - 2003
University of Szeged, Hungary
In my mechanical engineering studies, I progressed from intermediate to advanced. I mastered the Design of Machines, learned Technical Depiction and Drawing Technique, studied Mechanics, and gained hands-on experience in Manufacturing processes and their real-world applications.
Professional Experience
As a Full-Stack Web Developer, I manage the entire lifecycle of building web applications and websites—from initial planning to deployment and long-term support.
- Collaborate with clients to define clear requirements and translate their goals into technical solutions.
- Set up and manage domains, hosting, and server environments to ensure stable, secure performance.
- Build responsive, mobile-first interfaces and implement front-end and back-end functionality using modern technologies.
- Design intuitive user interfaces with a strong focus on usability and accessibility.
- Integrate APIs and third-party services to extend features and improve workflow efficiency.
- Optimize websites for speed, SEO, and overall performance.
- Handle ongoing updates, maintenance, and feature improvements.
- Provide reliable technical support and resolve issues quickly.
- Develop custom web applications with frameworks such as React, Node.js, and Express.
- Use Git and GitHub for version control, collaboration, and project management.
- Continuously learn and adopt new tools and technologies to improve development workflows.
Production Supervisor
2018 - Present
UK, London
- I manage the processing plant, ensuring production targets, quality, machine maintenance, and safety compliance. I handle weekly collections, stock monitoring, and communication.
Head of Sales Department
2014 - 2015
Hungary, Budapest
- I led a 50-member team, boosted efficiency, built sales channels, managed the Sales Department, and focused on B2B marketing and contract maintenance to maximize income.
Site Operations Manager
2009 - 2013
Hungary, Szeged
- I managed the Regional Waste Recovery Facility, supervising 110 personnel across multiple plants and a landfill. I improved efficiency, upheld safety standards, ensured environmental compliance, maintained equipment, liaised with stakeholders, and participated in audits.
