Levente Lorch, Developer in Pécs, Hungary
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Levente Lorch

Verified Expert  in Engineering

Front-end Developer

Location
Pécs, Hungary
Toptal Member Since
April 9, 2020

Levente has been a professional developer for over 15 years. He built an application for the leading sports club in Hungary (Fradi) and developed his own dating site and app, which quickly became one of the most popular in the country. Now focusing on mobile development, he is excited to take on new challenges and deliver outstanding products that exceed business goals.

JavaScriptFull-stackFront-endCordovaWebSocketsBluetoothReact HooksPHPMySQLSQLjQuerySQLyogMemcachedReactApp StoreNFC

Portfolio

DKK, Ltd.
Front-end, Near-field Communication (NFC), Bluetooth, MySQL, PHP, JavaScript...
Personal Project
React Navigation, Front-end, Google Play Store, App Store, Push Notifications...
Weco-Travel
Front-end, HTML, JavaScript, MySQL, PHP

Experience

JavaScript - 15 yearsPHP - 15 yearsMySQL - 15 yearsFront-end - 6 yearsCordova - 4 yearsReact Native - 3 yearsNode.js - 1 yearReact Hooks - 1 year

Availability

Part-time

Preferred Environment

Git, Visual Studio Code (VS Code), MacOS, Windows

The most amazing...

...app I've developed is the NFC/Bluetooth access control app for the largest sports club in Hungary (Fradi).

Work Experience

Lead Mobile Developer

2016 - PRESENT
DKK, Ltd.
  • Developed an app for identification and payment using React Native, Bluetooth, NFC, and QR Code.
  • Built the mobile app (entry, membership, and other options) for the leading Hungarian sports club (Fradi) using Cordova.
  • Created custom Cordova Android plugins for the applications.
  • Worked on experimental applications and technologies, including face recognition, fingerprint scans, Bluetooth "touch," indoor navigation, kontakt.io API, and beacons, to name a few.
  • Developed the PHP and MySQL back end serving the applications.
  • Integrated Zoom.us API and SDK for video meetings as an online education solution.
Technologies: Front-end, Near-field Communication (NFC), Bluetooth, MySQL, PHP, JavaScript, Cordova, React Native

Project Owner

2014 - PRESENT
Personal Project
  • Created a dating site and a niche clone as a hobby project which has become one of the largest in the country.
  • Developed the website, a mobile website, and a mobile app first in Cordova, later in React Native. The mobile website and the Cordova app shared the same source code.
  • Built a Node.js chat to replace the well-performing but outdated AJAX chat with WebSocket technology. Results showed that a single small server is more than enough to host both sites and apps.
Technologies: React Navigation, Front-end, Google Play Store, App Store, Push Notifications, React Native, Context API, React Hooks, HTML, WebSockets, Node.js, MySQL, PHP, Cordova, JavaScript

Full-stack Developer

2012 - 2015
Weco-Travel
  • Performed as the main developer on the travel booking site. It is one of the largest in the country. Assisted in the development of its partner sites and air ticket search site.
  • Imported XMLs and worked with different APIs to import travel offers into the database from more than 20 partners. Introduced a live connection to partner systems, including handling reservations and receiving live room availability data.
  • Optimized the large-scale database and MySQL queries for performance and liability.
  • Developed a newsletter system and newsletter editor interface serving 300,000 subscribers.
  • Constructed a partner system where travel agencies could design, edit, and administrate their own travel booking sites backed by the central database and engine.
Technologies: Front-end, HTML, JavaScript, MySQL, PHP

Full-stack Developer

2007 - 2012
Otthon Centrum (Real Estate Website)
  • Developed new LAMP-based websites for Otthon Centrum and its partners.
  • Maintained and upgraded the main property listing web page of the company.
  • Redesigned the database of the property listing web page. Rewrote database queries to improve performance and reduce load.
Technologies: HTML, JavaScript, MySQL, PHP

Survey App

Built an app in React Native, enabling enterprise users to gather and share retail information among manufacturers, brokers, and retailers. The app allows the user to take surveys offline (related to their position), take pictures, and sync data with the back-end server. This is not a public application.

Dating App

https://www.randik.hu/
This is my personal project. React Native dating app (Randik and it's clone Vagyaid) with Node.js chat server and PHP-MySQL back end. Previously an app built in Cordova (for native and the web) served mobile users recently replaced with the React Native app.

Gym Management System and App

http://profgym.hu/en/
A web application that handles the full management of the largest gym in the city of Pécs (ProfGym), including membership, cash register, entry system, cabinet handling, and stock management, to name a few. I used a PHP/MySQL back end. The mobile application was built in Cordova to run on tablets at the counter for customer feedback after each purchase or interaction with the crew (connected to the cash register and the management system). The application also makes self-registration possible for new customers making the entire process easy, intuitive, and streamlined.
1999 - 2002

Bachelor's Degree in Computer Science

University of Pécs - Pécs, Hungary

Languages

JavaScript, PHP, SQL, HTML

Frameworks

React Native

Libraries/APIs

Context API, React Navigation, React, jQuery, Node.js, Handlebars

Tools

SQLyog, Cordova Plugins, Git, NGINX, GitHub, Zoom

Storage

MySQL, Memcached

Other

React Hooks, Push Notifications, Cordova, WebSockets, Bluetooth Beacons, Near-field Communication (NFC), Bluetooth, Front-end, Full-stack, App Store, Google Play Store

Platforms

MacOS, iOS, Android, Windows, Linux, LAMP, Visual Studio Code (VS Code)

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