Михаил Полозков

I'm a Full-Stack Developer with over 5 years of hands-on experience building complex web applications using TypeScript, React, Redux, RxJS, and Material-UI on the frontend, and Python, FastAPI, Django, Django REST Framework, or Flask on the backend. I’ve worked on production-grade SaaS platforms, internal tools, admin dashboards, and service marketplaces — from scratch to release. On the backend, I have strong experience with PostgreSQL, MongoDB, MySQL, Kafka, Redis, Celery, SQLAlchemy, background tasks, and WebSocket-based real-time updates. I design clean REST and GraphQL APIs, implement secure auth with JWT, and build scalable systems with Docker and AWS. I’m also experienced with setting up CI/CD pipelines, automating testing, and deployment processes to ensure stability and rapid delivery. On the frontend, I focus on architecture, maintainability, and performance, utilizing tools such as Redux-Observable, InversifyJS, react-hook-form, and Jest for testing. Although I’m new to Upwork, I bring a senior-level engineering mindset, solid code quality, and real-world experience leading releases, mentoring teammates, and optimizing workflows. I’m reliable, fast, and ready to bring value from day one.

Key Skills

Frontend development:

• Professional experience in TypeScript (4-5) and JavaScript (EC6)

• Strong knowledge of web development with JavaScript/TypeScript Libraries: jQuery, Redux-Observable, Redux-Thunk, React-Hook-Form, RxJs, Automapper, Inversify, React-Intl

• Strong experience material-ui react component library

• Broad expertise in JavaScript Frameworks: React.js, Redux, Draft.js

• Good experience with testing and code quality checks libraries: Jest, Eslint, React Testing

• Strong experience in HTML5, CSS3

• Used build tools: webpack, npm

Backend development:

• Professional expertise in Python

• Broad expertise in Backend Frameworks: Django, Django Rest Framework, FastAPI

• Extensive experience in using databases: PostgreSQL, MongoDB

• Have experience organizing client-server communication with Rest API, GraphQL, WebSocket

• Good experience creation data and memory storages using Amazon Web Services (AWS) and Redis, creation CI/CD

• Strong experience of development with Python libraries: channels, celery

Programming practices: Code Refactoring, Code Review, Performance Improvements

Development Environments and Tools: WebStom, PyCharm, Visual Studio, Visual Studio Code, Terminal, DataGrid

Development Environment Services: Jira, Trello, Asana, Confluence, GitLab board

SourceControl: Git, GitHub, GitLab, BitBucket
Software Development Methodologies: Scrum, Kanban

English level: B2

Professional Experience (2020 - present)

The administrative panel of the international online gaming platform

The service provided access to the management of users of the gaming platform, taking into account the current role of the panel user (Customer-Support-Manager, Security-Manager, Player-Agent etc.). The platform is used to manage monetary transactions, display current data about users, their administration and management depending on the region. Also, depending on the permissions, it gave access to the management of its own users - the distribution of roles and access to certain functions of the service.

Technologies: FastAPI, SQLAlchemy, pytest, PyJWT, Docker, Celery, Redis,  JavaScript, TypeScript, React, Redux, RxJs, Redux-Observable, Automapper js, Inversify, HTML5, CSS3, Material-UI, Jest, Eslint, Webpack, GraphQL, FormatJs, Draft.js, React-Intl, WebSocket, mySQL

Responsibilities: 

• Fullstack development

• Code review

• Bug fixing

• Optimize code and performance

• Teammates mentoring

Completed task:

• Developed company’s libraries combining existing solutions to create a common interface

• Developed and implemented the architecture of the whole application

• Created and implemented proposal to improve build and test performance

• Developed dynamic displays with information about different project’s entities, including updates in realtime format using WebSocket, and actions on entities in these boards

• Created and implemented proposal on automated testing of project to less the team’s time that was spent on code review

• Implemented several product features over panel’s user roles

• Release management. Preparing the team for the release, optimizing the team's work, and task prioritizing

Service for the distribution of services

A service for the sale of P2P services. It included communication between users, automatic client-user interaction, management of the current deals, and administration all of that under a separate domain.

Technologies: Django Rest Framework, PostgreSQL, Celery, JavaScript, TypeScript, React, Redux, Redux-Observable, Automapper js, Inversify, HTML5, CSS3, Material-UI, Rest, AWS, React-Intl, WebSocket

Responsibilities: 

• Fullstack development

• Code review

• Bug fixing

Completed task:

• Product development from scratch

• Developed and implemented the architecture of the whole application

• Worked with mathematical formulas and algorithms

• Developed messenger incide service, for chatting between users + company support chat

• Developed automotive matching offer with customer system

Corporate site

Site is a web application for IT companies. The site provides information about the company's products and technologies. There is also a built-in service for internal staff use inside the site: Work calendar, sharing of access to various data, information about the current team and project, etc.

Technologies: JavaScript, React, FastAPI, AWS, Python, Rest, HTML5, CSS3

Responsibilities: 

• Fullstack development

• Code review

• Bug fixing

• Team Leading

Completed task:

• Developed working calendar as feature for internal use

• Managing the team, a new website design has been integrated

• Improved SEO to maximum performance after the design update