Project - Real-Time Auction Site, Payments & Image Recognition

Overview

At Lajos I worked across a diverse set of projects, ranging from real-time web applications to backend integrations and data visualization. The tech stack spanned PHP (Symfony 2, Zend Framework 2) and Node.js.

Key Projects

Real-Time Auction Site

Built a live auction platform where users could bid in real time. The architecture used:

• Symfony 2 for the application backend and auction logic.
• Redis Pub/Sub for broadcasting bid events across server instances.
• Node.js & WebSockets for pushing live updates to connected browsers with minimal latency.

Nappas.nl — Payments & Multilingual Support

Implemented new payment methods for nappas.nl and made the site available in multiple languages, including the full internationalization pipeline for templates, content, and URL routing.

RBAC Module for Zend Framework 2

Built a Role-Based Access Control module for a Zend Framework 2 application, providing granular permission management for different user roles.

Chart Rendering & PDF Generation

Developed server-side chart rendering for a workflow application that visualized personal performance results. Charts were rendered as images in PHP and embedded in both the web interface and generated PDF reports — a non-trivial challenge at the time given the limited PHP charting libraries available.

Image Recognition API Integrations

Integrated several third-party image recognition APIs for visual data processing and classification tasks.