Fullstack nodejs react developer

Node.js developer
Development of back-end services with Node.js. Made refactoring of a big and complicated data converter from MySQL to MongoDB, reached high convertation speed in real time.
Created API for number of statistical surveys. Used to do minor editing in php sources of the site and HTML templates (twig).
Participated in developing of a GraphQL server (ES7, babel, flow) for retreaving data from MySQL on the front end

JavaScript Node.js developer
Development of a cryptographic communication system http://www.zioniti.com/
Postfix, Dovecot - has set up a mail server on MySQL
Node.js - has developed an integration module for user registration on email server (with tokens) during registration in our system.
Has developed a module connecting the server and sending/receiving emails through SPTP/IMAP using third parity open source modules. Participated in development of a public key infrastructure with Node.js and PostgreSQL. Has developed an email encryption module, analogous to PGP: symmetric ciphering with AES, digital signature, and secret sharing with RSA, hashes SHA-2; with Node.js core modules and Forge module. Has developed a small (USB flash sized), contactless card reader with NXP PR533 chip. Has developed a native module on С++ for Node.js, enabling cross platform working with card reader through PC/SC driver: Windows, Mac, Linux (tested on Ubuntu). Module testings with mocha + chai.
Java Card - a platform for programming smart cards. Wrote an applet for authentication to the system through the challenge-response with the ability to updаtеthe keys. Worked with NXP smart cards - JCOP J3A080 (have a certificate). Used types of encryption: AES-128, RSA-1024; SHA-256 hashes.
node-webkit (nw.js nowadays) - a platform for creating portable desktop applications with web developer tools. Used for e-mail client, on the front end HTML, CSS (LESS). Laid out graphical user interface on the PSD layouts, used: AngularJS, jQuery, Bootstrap, Summernote, Font-Awesome. Has set up server with git repository for the project. Assemble project with npm, bower, grunt.