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Valentin V.

Full-Stack Developer

Verified expert

Valentin V.

Full-Stack Developer

Verified expert

senior

Ukraine

$35/hour

English – Advanced

Ukrainian – Native

Top skills

Python React Django FastAPI PostgreSQL Docker MongoDB Redis AWS Flask

Meet Valentin ✨

A Full Stack Developer with 5.5 years of experience building scalable web applications, microservices architectures, and data-driven platforms using Python on the backend and React on the frontend. Valentin works confidently across the entire development lifecycle — from technical specifications and architecture design to deployment, monitoring, and ongoing maintenance.

He has delivered production systems across e-sports analytics, e-commerce, FinTech, communications, and e-commerce domains. His projects include a real-time sports prediction platform with proprietary statistical algorithms and live data streaming, a web-based auction platform for collectible and ancient items with customized buyer experiences, a FinTech financial accounting platform with multi-currency wallet management and AWS deployment, and a microservices-based chat contact center connected to a GC marketplace.

Valentin’s core stack is Python with Django, Flask, and FastAPI on the backend, React and Redux on the frontend, and PostgreSQL, MongoDB, and Redis for data. He has solid experience with Docker, Kubernetes, AWS, Celery, and CI/CD pipelines. His approach combines clean code, unit testing, and thorough technical documentation.

If you need a reliable full stack developer who can handle complex backend logic, build intuitive frontends, and deliver production-ready systems with real-world performance at scale, Valentin is ready to take ownership and deliver 🚀

Download the CV

Hard skills

Python

JavaScript

TypeScript

React

Redux

Redux Toolkit

Django

Django REST Framework

Flask

SQLAlchemy

Alembic

Celery

NumPy

Pandas

Matplotlib

BeautifulSoup

Selenium

Aiogram

Requests

Motor

boto3

Twilio

Material UI

Bootstrap

JSX

SQL

PostgreSQL

MySQL

SQLite

MongoDB

Redis

Docker

Kubernetes

AWS

Heroku

Nginx

Jenkins

Bitbucket CI/CD

REST API Development

GraphQL

WebSockets

Software Architecture

Technical Documentation

Tools

Git

GitHub

GitLab

BitBucket

Postman

PyTest

Unittest

Mock

Sentry

PyCharm

Visual Studio

WebStorm

DataGrip

Scrapy

Grafana

Prometheus

Elastic

Rancher

Soft skills

Problem solving

Responsibility

Adaptability

Communication

Attention to detail

Team collaboration

Time management

Continuous learning

Advanced Predictive App for Competitive Sporting Events

Full Stack Developer

Duration:

1 year

Domains:

E-sports

Project Description:

Developed backend and frontend for a real-time sports prediction platform using custom statistical models and proprietary algorithms. The system combines offline match result prediction algorithms with online algorithms fed by live data streams, updating predictions in real time during matches. Optimized resource allocation for peak traffic performance.

Tools & Technologies:

Python, FastAPI, WebSockets, JavaScript, MySQL, Tortoise, MsSQL, Drill, Scrapy, Selenium, BeautifulSoup, SQLAlchemy, Alembic, PostgreSQL, Vue.js, Elastic, Prometheus, Grafana, GraphQL, Rancher, Redis, Unittest, Sentry, Docker, Kubernetes

Auction Application

Full Stack Developer

Duration:

1 year

Domains:

E-commerce

Project Description:

Built and maintained features for a web-based auction platform for buying and selling specialized ancient and collectible items. Extended notification and report generation functionality, improved UI/UX with new web pages and modal windows, and delivered regular maintenance and bug fixes.

Tools & Technologies:

Django, Vue.js, Redis, Celery, DRF, MongoDB, Docker, Docker Compose, PostgreSQL

Chat Contact Center

Full Stack Developer

Duration:

1.5 years

Domains:

Software Communication

Project Description:

Developed frontend and backend features for a microservices-based chat platform enabling conversations between builders, customers, and companies across multiple channels, with integration to a GC marketplace. Rebuilt backend and frontend components to encapsulate additional clients and micro-services, and managed containerized deployment.

Tools & Technologies:

Python, Flask, PostgreSQL, MongoDB, SQLAlchemy, Alembic, React, Redux, Pytest, Unittest, Docker, Docker Compose

Financial Accounting

Full Stack Developer

Duration:

1 year

Domains:

FinTech

Project Description:

Built a financial accounting platform with multi-currency wallet management, transaction history, date-range filtering, report exports, and fund transfers between users. Integrated with Amazon Web Services for infrastructure, deployed on AWS, and integrated third-party APIs for extended functionality.

Tools & Technologies:

Python, JavaScript, Flask, PostgreSQL, JWT, Unittest, Docker, Docker Compose, AWS (RDS, S3, EC2, Route53, Elastic Beanstalk)

Website and Telegram Bot for Genealogists

Full Stack Developer

Duration:

1 year

Domains:

E-commerce

Project Description:

Developed a web application and Telegram bot that allow genealogists to search, display, and manage information about people and relationships to build family trees. Implemented data import/export functionality, designed the database schema, built the Telegram bot with pyTelegramBotAPI, and deployed to production.