pleshevski.ru/docs/eng/works.md

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title: Works
layout: WorksPage
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## Highlighted working experience

### Binary Management

- Dates: August 2018 – currently
- Roles: Lead Fullstack Developer, Team Lead, Architect

Development of a Project Management Tool for Interior Designers

##### Backend GraphQL API

Stack: `Node.JS`, `Apollo`, `PostgreSQL`, `Redis`, `BullMQ`

- Migrated database triggers into business logic. Code became easier to read and 
maintain, and the system became more reliable.
- Introduced unit testing and integration testing practices. I wrote over 70% of 
all tests myself.
- Added GraphQL subscriptions for dynamic updates.

##### Frontend

Stack: `React`, `Apollo`, `Antd`

- Formed a UIKit and general components, optimized complex and loaded 
components.
- Changed API work on the frontend.
- Introduced integration testing practice using Cypress.
- Migrated the entire project to TypeScript. Created isolated system modules.

##### Leadership of the Team

- Introduced TDD (Test-Driven Development) practices.
- Brought the "Critical Chain Method", the "Buffer Method", and the "Backward 
Planning" method into the project. Helped the team get in sync,
releasing small batches every week.
- Created individual development plans for team members.

##### Architecture

- Broke down the entire codebase into modules by feature.
- Optimized `PostgreSQL` database, splitting company data into separate schemas 
and applying partitioning tables.
- Added query caching with Redis.
- Reduced infrastructure costs by 5 times, migrating the project from Kubernetes 
to NixOS.

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### Core Spirit (Back Office)

- Даты: Август 2024 - currently
- Роль: Lead Fullstack Developer

Development of the Back Office for Core Spirit social platform.

- Integrated `Dependabot`, which helped update all outdated 
dependencies. Replaced webpack with `vite`.

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### Master Progress

- Dates: May 2018 - currently (Passively maintained)
- Role: Tech Lead

Development web infrastructure of the educational center Master Progress

- [The main site](https://masterprogress.ru) (`Python`, `Flask`).
- [Student's cabinet](https://cabinet.masterprogress.ru) (`Python`,
`Flask`, `TypeScript`, `React`, `PostgreSQL`).
- [A tool for rosmintrud](https://rosmintrud.masterprogress.ru)
(`Deno`, `Vue`, `Typescript`)
- A complete infrastructure was created on `NixOS`. Before that, I had created 
an infrastructure using `Drone CI` / `Woodpecker CI` and `Docker
swarm`, which has been running for over 5 years.

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### Core Spirit

- Dates: August 2018 - May 2020, August 2024 - currently
- Role: Lead Fullstack Developer

Development of Social platform focusing on human and planetary enhancement.

- A REST API (using `Node.JS`, `Express`, and `PostgreSQL`) for the main website 
and back office. I also got to work with a new version of the REST
API using `Go` and `PostgreSQL`.
- Auto poster to various social networks and messengers
(Facebook, LinkedIn, Twitter, Telegram).
- Neural network for automatic categorization of articles.

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#### MERLION

- Dates: March 2016 – May 2018
- Role: Senior Fullstack developer

In this company there were 6 considerable projects I have successfully
completed:

- optimize the creation of promotional pages (PHP, JavaScript)
- support main traditional site <https://citilink.ru> (PHP, JavaScript)
- development of parsing to monitor products for changes in price,
quantity/availability in stock, rating and other fields based on data from 55
websites (Node.JS, Express)
- work with neural networks for matching of goods
- development face recognition apps for Android (Java)

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## Chronology

Public projects only.