http://www.intelliad.de

Started to work as Software Engineer in API integration team.

https://firma-offshore.com

Worked as team lead, managing 20+ websites build on different CMS. Developed from scratch CRM system on Yii2 framework for company needs. Moved main company web/mail infrastructure from shared-hosting services to Amazon Web Services platform. Configured and maintained email marketing software such as Interspire and Mailwizz using own PowerMTA installations combined with Mandrill and Amazon SES for delivery.

http://www.dvhventures.de

Performed maintenance and fixed several issues on company's websites. Used my MySQL and mathematical knowledge to fix and refactor radius search on specialists belonged to different locations in Germany. Worked with Wordpress and Magento systems, Symphony framework.

Replaced previous team lead on the same project. Worked mainly on the server side tasks, received a lot of experience in web/mail server configuration and email marketing. Gained experience with Amazon Web Services platform, used Elastic Transcoder to convert uploaded videos on-the-fly. Wrote a module for nginx web server using Perl language, allowing to create video streams with unique link for each user, making possible to watch video online during limited period of time.

Worked on the web application consisted of 3 services: multi-level-marketing affiliate system, hosting and video streaming platform. The project was fully written in Yii, including a lot of front-end JavaScript code. Application was deployed in a distributed network, used several own and third-party services via APIs. Separate "customer area" application was used for e-commerce features like online payments/subscriptions and payouts to affiliate partners.

First time when I used Yii framework in my job. Website about African itineraries with possibility to schedule and book trips, paying online by credit card without leaving the website. Developed trip constructor allowing to build fully-customized itineraries. Worked in a team with 3 developers and designer.

http://www.bigappleportraits.com

Applied my knowledge in practice, refactoring old legacy code. Used Git to deploy changes on live server via SSH. Modernized schedule-based booking system to a single-page application and developed a simple CRM system to work with customers and reservations. Written on plain PHP with custom framework.

http://www.thumbtack.net

Learned about how to work in a big team using version control systems like Mercurial or Git, developing own configuration system/server using Java and PHP languages. Development performed in Linux environment, much work done in console. Received fundamental practical knowledge about software architecture, from the scratch to release.

http://www.omsu.ru

Studied: fundamental mathematical knowledge, programming languages, networking, databases, operating systems, general principles and aspects of information security, mathematical methods and algorithms being used in computer security, modern cryptographic algorithms and schemes.
My graduation work was a tool for packing Windows "Portable Executable" files encrypting them with AES algorithm using secret to decrypt and run them on-the-fly.