My services

Dániel Debreczeni
  • Full Web Development icon

    Full Web Development

  • Installable Web Application icon

    Installable Web Application

  • Web Strategy & Planning icon

    Web Strategy & Planning

  • Feature Development icon

    Feature Development

  • Bug Analysis & Fixing icon

    Bug Analysis & Fixing

  • Code Refactoring icon

    Code Refactoring

  • Modernization & Technology Upgrade icon

    Modernization & Technology Upgrade

  • Version Upgrades icon

    Version Upgrades

  • SEO Optimization icon

    SEO Optimization

  • Responsive Modern Design icon

    Responsive Modern Design

  • Performance Optimization icon

    Performance Optimization

Full Web Development

Full Web Development

Based on the approved plans we build the complete web system, from development and testing to final handover.

We deliver the complete web system based on the specification. We use modern technologies and proven practices to build stable, secure and scalable software. Throughout development we focus on code quality and performance, followed by testing to ensure reliable production behaviour. The final delivery includes clear documentation.

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Installable Web Application

Installable Web Application

We create modern web applications that can be installed on mobile devices and provide an app-like experience. Look for the install icon in your browser’s address bar – this website itself can be installed as an app.

Installable web applications, commonly referred to as Progressive Web Apps (PWA), represent one of the most advanced approaches in modern web development. They combine the reach of the web with the experience of native mobile applications. Users can install the application directly from their browser, which places an icon on their device similar to a traditional mobile app. PWAs load quickly, may support offline functionality and can even provide push notifications. In many cases they offer a cost-effective alternative to building separate native apps for iOS and Android while keeping the flexibility and easy update cycle of the web.

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Web Strategy & Planning

Web Strategy & Planning

We guide the process from idea to specification. Together we analyse business processes and design the right web solution.

Successful web projects start with careful planning. We review business goals, map processes and define what the system needs to do. Together we design the core features and user flows. The resulting specification provides a clear foundation for development and reduces risk during implementation.

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Feature Development

Feature Development

We review the existing system and requirements, then implement new features that fit seamlessly into current operations.

We add new features to existing systems. Before implementation we review architecture and business logic to ensure a clean fit. We aim for stable behaviour without side effects and keep maintainability and future extensibility in mind.

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Bug Analysis & Fixing

Bug Analysis & Fixing

We identify the root cause and fix issues to restore stable and predictable system behaviour.

Issues often have complex causes. We first identify the real root cause, then apply targeted fixes. Beyond removing symptoms we aim to restore stable operation and avoid regressions in other parts of the system. The result is predictable and reliable behaviour again.

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Code Refactoring

Code Refactoring

We improve the internal structure of the codebase to make it cleaner, more maintainable and more stable long-term.

In long-running systems code structure can become complex over time. Refactoring reorganises the code while keeping behaviour unchanged. The goal is a clearer, more maintainable and extensible codebase—especially important when many developers have contributed over the years.

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Modernization & Technology Upgrade

Modernization & Technology Upgrade

We review your tech stack and modernise the system by upgrading to current platforms and tooling.

Technology evolves, so legacy systems can fall behind. We review the technical foundation and upgrade to modern solutions. This can improve performance, security and developer velocity, while preserving existing functionality during the transition.

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Version Upgrades

Version Upgrades

We upgrade frameworks and runtime environments to keep your system secure, compatible and reliable.

Keeping dependencies up to date is key for security and compatibility. We upgrade to newer versions while maintaining stable behaviour, checking dependencies and potential breaking changes. The result is a more future-proof system.

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SEO Optimization

SEO Optimization

We review technical SEO foundations so search engines can better crawl and understand your site.

Technical SEO helps search engines crawl and interpret your website. We review structure, metadata and relevant markup. A clean setup supports better indexing and can improve visibility over time.

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Responsive Modern Design

Responsive Modern Design

We design and build modern, responsive interfaces that work smoothly across devices.

Modern sites must work well on every device. Responsive design adapts layouts to different screen sizes. We focus on clear structure and usability so the interface remains consistent and easy to use.

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Performance Optimization

Performance Optimization

We analyse performance, identify bottlenecks and optimise for faster, more efficient operation.

Performance is critical for user experience. We analyse the system, identify what causes slowdowns and optimise accordingly. Improvements can target the database, backend processing or frontend resources. The goal is faster response times and more efficient operation.

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Contact

Contact with me

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Dániel Debreczeni

Web Application Developer

I am available for freelance projects.
If you have an idea to implement, a question, or perhaps a web problem, feel free to contact me.

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