Leading billing development team.

* Formation of technical agenda for billing team;* Team design of a new event-based billing architecture and migration plan for the current architecture;* Promoting the idea of creating an infrastructure team and technical leadership at the initial stage (until the team becomes an independent unit);* Participation in technical duty and solving operational problems (SRE);* Participation in interviews with new candidates;* Solving product and technical problems.

* Reworking the architecture of the bot for automatic distribution of investor funds;* Design and development of new services - integration with the bank, standardization of documents, construction of analytical aggregates for borrowers, encryption and electronic signature;* Support and development of legacy code - distributed monolith;* Participation in the transformation of the borrower's personal account architecture for integration with new billing;* Migration of infrastructure and data to a cloud solution (Yandex.Cloud);* Participation in strategic technical planning;* Participation in team events - code reviews, task grooming, retrospectives.

Development and integration software products for automation of credit and related business processes, mainly for companies in financial sector. Maintainer of several microservices, like authentication and identification service, partner management service. Implemented a unified authentication and authorization system into the platform, which made it possible to speed up and simplify development of another parts.General microservice architecture with RabbitMQ communication, using Ruby on Rails, Sinatra and Hanami.

This is a startup! Development and architectural design white label crowdfunding solution, from initialization commit to completion of core development. With this solution, an own fundraising was carried out and then other startups conducted their fundraising 650m$, via ICO.Initially, it was a monolithic rails-application, then implemented REST API and separated front-end (React), using RSpec for testing.

Development experimental system with microservice architecture for behavioral-load testing. Maintainer of some services, such as task scheduler and composer; advanced manager for web-proxy, with ability to control and monitor the vital attributes of a proxy, distribution proxies between services. Using Ruby and Go, Dockerization and CI / CD (Gitlab CI, Bitbucket Pipeline).Also, implementing a library for direct communication with WebDriver via geckodriver (without selenium-server) and support for old projects, including a high-load processing system, maintenance of system for monitoring and controlling infrastructure.

Participation in development of such projects as:— Cryptocurrency exchanger;— Aggregator of information about tickets for various sports, theatrical and music events around the world. With LastFM integration (for music events);— Aggregator of information about US citizens from dozens of different resources;— Other projects, such as an online store, information parsing and etc.Also:— Library for visualization on GMaps crimes uncovered by UK police with division into districts and categories of crimes (https://data.police.uk/docs/);— Library for converting data from OpenCart to WooCommerce (unpleasant experience);— Script for regular parsing and aggregation of information into a single stream with 10+ resources.