Engineering backend microservices for internet acquiring and mobile commerce and card payments. Working to evolve and support the company's own PCI DSS certified fintech platform for online and mobile payments while introducing additional value.

During my employment there I made:
• Pluggable lib to collect monitoring and tracing data for Python microservice components.
• Designed and implemented API to communicate with client application and core components while our team was engaged in rebuilding separate payment solution for the major social network to give the ability for their users make money transfer right from the resource web page. Application units was implemented using Python and GoLang.
• Upshift legacy microservices based on more or less obsolete technologies to the new united project template organization with tooling set built around FastAPI.
• Resilient task controller working together with asynchronous message queues to mitigate their quirks during high-load peaks.
While everyday activity includes:
• Adding moderate-size features according to moving business requirements by modifying existing units or adding new ones
• Setup, tune and use deployment pipelines, provided with static checks and running unit and integration tests to ensure code quality
• Find bottlenecks in current system implementation and optimize processes by revising current logic and examine and optimize SQL queries and data structures in relation store.
• Fixing bugs based on support team reports in collaboration with DevOps team using reach set of infrastructure tools: monitoring, tracing, different kind of logs.

Software systems for enterprise project management and document flow management. Custom development for major railroad company. Built as web applications powered by Typesafe Reactive Platform (Scala & Play framework) as backend stack.
Backbone/Marionette feat CoffeeScript and KendoUI styles/controls as frontend solution
During my employment there I made:
• Designed and implemented flexible form generation depending on user role, document state etc. at front-end, based on formal rules stored at back-end
• Migrate legacy front-end from Backbone/CoffeeScript to React/TypeScript
• Create data table component feature rich with paging, filtering, grouping etc. applying ACL rules for fields sets and representation availability.
• Setup agile development process management with business requirements translation into tech requirements, task decomposition and distributing across the team, resource assessment, sprints.
While everyday activity includes:
• Communicate with the whole team, runs scheduled events, control task progress and feature implementations rate, reporting.
• Design API to communicate with backend, compose requirements for backend.
• Implement front-end components.
• Follow loosely coupled frontend architecture.

Implement real-time user content moderation system as administration user interface.