What have I used? PHP, Symfony, Laravel, Codeigniter, Yii2, Silex Mysql, Mssql, MongoDB, RethinkDB, Neo4j, Elasticsearch, RabbitMQ, ApacheKafka, Memcache, Redis Vs, Composer, Git, Jira, Wrike, Sonar Vs, OOP, SOA, Microservice Architecture, Layered Base Architecture, Unit Testing, Design Patterns. Java, Python, Django...I'm currenty working at Enuygun.com. The main projects I work on are "Payment As a Service" and ENcuzdan(Wallet). Payment As a Service project integrates all the major bank systems and PayU in a single project. It has 3D Authentication, Pre-Authorization, Post-Authorization, Cancel, Refund, Card Point Check and Card Point Payment methods for all the POS systems.ENcuzdan, the other main project I'm working on, is a wallet system developed on a blockchain. It uses ENCoin as a token. Also supports other currencies such as TL. Some technologies like Elliptic Curve Cryptography (Signature - Verify with Public Key, Private Key), Proof Of Work are used. I am the only maintainer of these projects and I have coded them from the scratch.Before Enuygun, I was working at UITSEC(Cyber Security) as a Senior Developer. I developed a Rest API with microservice architecture that complies with all the standards and includes documentation. Some of the technologies I used Symfony Framework, ElasticSearch, Apache Kafka, RabbitMQ, Redis, Memcache, MongoDB, Neo4j, RethinkDB.Before that I was working at Incir A.S as a Senior Developer. We were using technologies like Memcache, Redis, Elastichsearch, RabbitMQ. Company has had more than 25.000+ stores. All the stores were working on the same system. They also used network matketing system. We also developed a product management tool built on this system. All the suppliers were able to put their products into the system using this. Symfony Framework is used on this project.