During my work at Netology Group there were a lot of happy moments and challenging tasks. I tried to keep up with the very dynamic development of the company, tried to do my best and helped my colleagues to become a better versions of themselves :)

Here I learned a lot, and I was fortunate enough to grow up from a startup employee to a software architect/CTO in a mature and solid company (one of the biggest EduTech companies in Russia)

Here are some of my achievements, which I consider the most significant:

• For the portals and services of the Netology, business development processes have been built almost from scratch, and several cross-functional teams have been formed that develop independent products in accordance with the principles and ideas of Agile and using the Scrum / Kanban frameworks. The Department of Development of the Netology has been expanded from 4 developers to 15+. There was organized independent team work with parallel software releases (Gitflow -> GithubFlow)
• In the role of architect and developer I have developed and implemented important technical solutions and many of them are currently working in the company. Among these things:
  • Work with payments - payment gateways, In-app payments / recurring payments and refunds of payments, credit and installments, coupon service functionality (promotional campaigns and multi-level discounts), integration with various payment systems, price calculators, automation of accounting operations and procedures (integration with services such as solar-staff.com)
  • Tools for improving SEO positions / healthchecks system - custom meta tag validators and tools to build dynamic micro-markup, solutions for improving portal indexing (server rendering functionality (Dynamic nginx + PhusionPassenger (C ++) + ExpressJS backend) and AJAX-crawling proxying), optimizing page load speed (backend and frontend optimization),
  • Heavy SQL-based solutions - multicriteria ratings for students (filters on geobase, classes, disciplines, groups / olympiad seasons, etc.), the functionality of recommendation services, user's bookmarks, improvements of full-text search on the portal, facet search, profiling and optimization of heavy search queries, SQL profiling and optimization, construction of flame graphs and histograms)
  • Sub-portals (multi-tenant apps), special projects, landing constructors (like Tilda/Webflow, but for custom needs), web editors for media content,
  • Authorization services, business logic of access policies, model of access to checkpoints through access rules / prerequisites, gamification (data models for the system of ranks / levels / achievements), schedule / group parallels / custom granular LMS, user-friends bots, Code Sandboxes
  • Encrypted storage of personal data and documents , custom solutions for AB testing (including the layer of business logic for working with unauthorized users), ETL solutions (bindings around MyDBR / data converters => migration to Metabase)
• The strategy of migration of the Netology to a new platform has been developed and implemented (Monolith |> Monolith + SPA |> Monolith + rails + SPA |> Monolith + rails + nodejs server-side rendering + SPA)
  (PHP API / crontasks / CRM + rails (API - LMS - newCRM / CMS - code sandboxes) + micro-services + SPA + new Data Sources)
• The server infrastructure of production-like RC servers has been built and a lot of routine processes have been automated (server configuration tasks, deployment and containerization of applications, maintenance modes, dumps-backup-logging, etc.). I have done a lot to boost the DevOPS culture in the Netology
• A cohesive team was formed and a contribution was made to the development of the culture of development in the company: developer meetups were organized / with training sessions and pair programming / "techno-days" / attending conferences / joint passage of online courses, master classes were organized, etc :)

• developed a system for processing loan applications and several gateways to it. Its integration with ~ 50 credit companies and partners
• has developed a system for analyzing user actions to provide targeted offers based on Live Internet.
• has developed several plug-ins for bank sites (credit calculators written in JavaScript)

• Participated in the creation of a program to increase the loyalty of users "Berzka"
  (when cashbacks on the card were not yet mainstream, acquaintance with PCI DSS certification)
• Created about 6 plug-ins for Redmine Issue tracker
• Participation in the development of team projects

• Administration of Gentoo Linux servers
• participation in contractual reviews of on-board software development, testing and quality control of software products
• writing scripts on Ruby and Bash, working in Matlab, configuring blade servers