“Shuttle Cargo” project — system for factory processes automatization. The main functions are vehicle monitoring, cargo and work order creation and processing, reports, and analytics reparation.— As lead of the crew with 3 members, designed and implemented the system's primary functions with FastAPI, ClickHouse, k8s (Kubernetes), and others, analyzed the technical assignment, gathered requirements, and created and assigned developer tasks.— Designed event-driven architecture for processing entity events, presented that idea and implemented it with Kafka and Redis, as well as SDK for comfortable use. The system became more flexible for modifications, data receiving speed was up by more than 10 times, and the current implementation is easy to reuse in any system service.— I implemented the opportunity to run all micro-services locally with Docker. The development speed was up, and code quality increased.“Microtransit” project — On-demand passenger transportation system. Service offers a flexible routing of minibus vehicles that are shared with passengers.— As a part of a team of 20+ people, I was developing a project from scratch. I implemented many features, including corporate and intercity transfers, metrics collection, alerts generation subsystem, etc. Thanks to my participation, the system expanded from 0 to 4 cities,
 delivered 1.5+ million passengers, and became produce a profit.— Came up and implemented finding bus stops around users using Redis Geo instead of PostgreSQL PostGIS to resolve the load problem, which increased by 10 times that arose on integration with map service Urbi (2GIS). As a result, integration fetches an install conversion rate of 10%, 50% of which became regular customers.— I designed intercity transfer with scheduling features such as well as tasks groomed and implemented the most important functions with one another developer. As a result, new opportunities attracted new users and increased company income.

“Trucks owner account” project — Service granting full access to vehicle specification and updatable documentation, allowed buy insurance and etc.— As a single backend developer, I designed and implemented the system from scratch. Thanks to it, the project was successfully launched.— I planned backend development based on required deadlines.
As a result, the project was finished in 3 months.“Fleet management” project — System vehicles position, events, aggregates monitoring, driving style evaluation, drivers accounting and etc.— I maintained the legacy monolith on Flask and refactored several modules, including users, vehicles electricity events, and driving style evaluation to micro-services on FastAPI.— The authorization approach used the PKCE method based on OAUTH 2.0 was implemented by me. As a result, mobile applications became secure.

“Architectural monuments accounting” project — System for accounting guarded objects like historical buildings, monuments, parks and etc.— I have developed a module for document flow automation and employee presence in the workplace registration with Flask. As a result, document for customers production speed was up by 50%.— Decided to adapt the system to work with cutting-edge Python 3.6 instead of Python 2.7 and did it. Developers could use the latest and more stable libs with modern and needed functions that increased developing speed and decreased bug count.

— I maintained the system, supported users, and detected and fixed errors and bugs.— I worked with frontend and backend functions as part of my modifications.