Small hotels, Hostels, Chain of Apartaments

2-way synchronization with 3rd systems: Booking, Expedia, Dobovo, Hotels24, HostelWorld

Reservations management by visual calendar, Reports, Analitic system, Settings page

Iceleads.com refers ready to buy shoppers from the affiliate website to the appropriate online merchants. ETL system to XML/ CSV product feeds (including price and stock position) from online merchants, update information daily. Core service "Where-to-Buy" shows product specific and local purchase links on manufacturer websites, so consumers can instantly purchase their product of choice at the manufacturer's preferred retailer.
I was first technical member from scratch. My goal was to a design product, build the team, understand and transform business requirement.

Technologies: J2EE, JBoss, JSF, RESTful, MySQL, EJB, Redis, Solr, HBase.
Role: team leader

The second generation of ICEleads.
Technology stack of ICEleads was deprecated and has decided to rebuild core parts of ETL and Analytics tools. Requirements: highly scalable, distributed, stateless platform with failover for processing.

Technologies: Java, Spark, ElasticSearch, Spring, AWS, JavaScript, React, Redux
Position: Senior software engineer

System has provided the reseller community access to wholesalers' stocks. A unique way to save time and gain in efficiency. My goal was develop ETL system to automation process of integration distributors into system, provide Web-services for off-site resellers.
Site: http://www.compubase.biz/ict/
Technologies: Java, J2EE, JBoss, Struts, Hibernate, JDBC, PostgreSQL, SOAP, Solr (old platform before acquisition: VB.NET, C#.NET, ASP, MS SQL)
Role: team leader, long term support

Business value: online shops require flexible and cheap way to get product data sheets for own products. icecat.com provides such datasheets and does not provide integration tools.
Developed solution: ETL automation tool to load ICEcat product datasheet to databases PostgreSQL, MySQL, MS SQL. Plus Fulltext search by product catalog.
Letter solution was evolved to Gepard project (https://bintime.com/syndication)

Technologies: Java, Solr, MySQL, PostgreSQL, MS SQL
Role: developer

Requirements:

• developed fulltext search engine based on Apache Lucene
  
• product comparison functionality
  
• Product filtering functionality
  
  

Technologies: C#.Net, Apache Lucene, MS SQL
Role: developer

Configuration tool for internal telecom's products.
Technologies: ASP.NET, MySQL
Position: Developer

Develop 3ht party modules for osCommerce (www.oscommerce.com)
- OpenIcecat connector integration to map product datasheets with internal osCommerce items
- Mapping module (to map vendor names / category names into own structures)
- Automated pricing module to make an extra charge based on input parameters

Technologies: PHP, MySQL, Apache

https://simplepay.pro/
Software for payment terminals: bill acceptors, coin acceptors, printers.
Technologies: Java, USB interface, RC-232
Role: Developer