All Services Programming & Development Web Applications Development Share This Copy Link Directly Copy $40/hr · Starting at $500 I develop web applications and integrate with payment gateways. I work with PHP and Mysql, PostgreSQL and Oracle databases. I also do Blockchain cryptocurrency and affiliate systems for ICOs Skills & Expertise BlockchainCryptocurrencyMySQLOraclePHPPostgreSQL 0 Reviews This Freelancer has not received any feedback.