Costin D.

CTO

122 euro
Freelancer
18 years
Bucharest, ROMANIA

My experience

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UpworkOctober 2011 - Present

Worked on many diverse projects during my time as a freelancer, like Zorhub.com - consisting of a PDF web crawler, document conversion engine, indexing engine, Solr infrastructure and complete API for use by the project's frontend, currently indexing over 20 million PDF documents in over 50TB of data.
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TimeVibeJune 2012 - Present

Started TimeVibe as a simple timeline idea and ended up with today's concepts. Developed everything myself from CSS to PHP to Caching Mechanics.
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Betago.comOctober 2017 - Present

End-to-end Web & Mobile sportsbook development & management using a wide array of performance-oriented technologies and tools. Direct involvement in BetRadar integrations for all products, data & trading exchanges, Live Betting, own API development, backend, white labeling and gaming clients. Using SQL & noSQL databases, various API integrations (wallets, payment providers, fixture supplementation, widgets, etc), caching mechanics, HTML 5 clients, responsive designs implementation, and the golden standard in web security.
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Fusion AppliancesOctober 2011 - Present

The maker of the InterLink, HyperWeb and VPNLink line of network appliances that use innovative technologies to help companies resolve challenging problems.
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Zorhub.comMay 2017 - January 2018

Expert search specialist using PHP, Apache Nutch, Apache SOLR and Sphinx to name a few of the relevant technologies. Developed Zorhub.com, consisting of a PDF web crawler, document conversion engine, indexing engine, Solr infrastructure and complete API for use by the project's frontend, currently indexing over 20 million PDF documents in over 50TB of data.
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SportsPro AppsOctober 2012 - May 2017

Leading LAMP development of the company's Sportsbook ecosystem in the online gambling industry. Working on Server & App Architecture, Caching & Performance optimizations, Scaling & Node Distribution
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eRepublik Labs LimitedJune 2009 - October 2011

Overseeing product performance, scalability and uptime; setting the product tech direction & architecture. Optimizing application performance. Working with Symfony, Memcached, Redis, Varnish and anin-house high-performance non-MVC framework which I developed to get rid of Symfony'soverhead.
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QuickWebFebruary 2008 - June 2009

Product architecture, design and programming.
Designed and implemented over 90% of the CMS that powers www.securitycoverage.com, www.volcanocommunications.com, www.lakeland.ws and many other partner sites.
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GameloftSeptember 2006 - February 2007

Development of company's internal management applications, working with large sets of mission-critical data.
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Arsson Highfield Miller GroupNovember 2005 - September 2006

Led a small 3-man team, in the development of a web company management suite (bookkeeping, stocks, personnel, etc.)
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Ideosoft DesignMay 2005 - November 2005

Microsites and internal CMS development.
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Freelance PHP developerJanuary 2003 - January 2005

Training stage; working on small different projects.

My stack

SQL, Sphinx, Solr, Redis, PHP, NoSQL, MySQL, Memcached, JavaScript, HTML5, ElasticSearch, API