Sergey Koval

I am proficient Full Stack Engineer with 12+ years of experience in backend and frontend development. I posses deep understanding of OOP principles and knowledge of patterns.

Main skills and area of expertise:

• JavaScript and JS frameworks: NodeJS, AngularJS, ReactJS, VueJS, React Native

• Knowledge of HTML5/CSS3 + LESS/SASS/SCSS - responsive design (Bootstrap, GridLayout, Zurb)

• Django, Django RESTful framework, Mezzanine, Pyramid, Bottle, Flask

• MySQL, No SQL solutions

• RabbitMQ, Memcached, Redis, Sphinx, Elasticsearch

• MEAN and LAMP stack

• Play, Akka, ReactiveMongo, Rediscala.

• Amazon AWS: EC2, Lambda, S3, DynamoDB, Aurora

• Serverless architecture

• Payment Gateway integration (Google Checkout, Authorize.net, PayPal, Stripe)

• IDEs and Tools: CentOS, Ubuntu/Debian, OSX. Vagrant, Docker, NginX, Apache, SBT, Maven, Gradle, Git, IntelliJ IDEA, Jenkins, Jetty, Tomcat

• APIs: Facebook, Twitter, Livejournal, VK, JIRA, Mailchimp, Mailgun, Mandrill, Zendesk, Twilio