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Daniil S.

Daniil S.

Backend Developer

Verified expert

middle
Ukraine
$30/hour
English – Advanced
Top skills
Python FastAPI APIs PostgreSQL Redis Docker AWS WebSockets Celery SQLAlchemy
Daniil S.
Backend Developer

Verified expert

advanced
Ukraine
$30/hour
English – Advanced

Meet Daniil ✨

A Backend Developer with three years of experience building scalable Python systems for AI platforms and real-time financial applications. Daniil specializes in designing clean, high-performance APIs with FastAPI, async PostgreSQL, and Redis, focusing on architecture that holds up under production load without unnecessary complexity.

He has built the backend for an AI agent development platform with MCP integrations, access control, and real-time WebSocket communication, as well as a cryptocurrency tracking application with live price monitoring, virtual wallets, and WebSocket-based investor community chat across a microservices architecture.

Daniil is a Google Cloud certified engineer with a Master's degree in Computer Science. He combines strong async programming skills with practical experience in cloud deployment, task scheduling, and system observability using tools like Sentry and Loguru.

If you need a backend developer who can build fast, reliable APIs and production-ready Python services without overengineering, Daniil is the kind of engineer who delivers clean architecture that scales 🚀

Download the CV

Hard skills

Python

SQL

FastAPI

Django

Django REST Framework

Celery

SQLAlchemy

Alembic

Pydantic

Numpy

Pandas

BeautifulSoup

boto3

Requests

Selenium

AIOHTTP

Async Programming

WebSockets

Socket.IO

PostgreSQL

MySQL

SQLite

Redis

Docker

Docker Compose

AWS

GCP

Nginx

REST API Development

Microservices Architecture

Tools

Git

GitHub

GitHub Actions

GitHub CI/CD

Postman

Pytest

Unittest

Mock

Sentry

Loguru

PyCharm

APScheduler

MindsDB

Firebase Admin SDK

Soft skills

Responsibility

Problem solving

Communication

Ownership

Adaptability

Attention to detail

Team collaboration

Continuous learning

Studio — AI Agent Development Platform

Backend Developer
Duration:

2 years

Domains:
AI & Machine Learning
Project Description:

Built the backend for a flexible AI platform that enables users to create, configure, and operate intelligent agents through a scalable interface. Developed APIs for agent management, dataset handling, access control, and user configuration. Integrated MCP connectors, Google Sheets, email services, and external authentication providers.

Tools & Technologies:

Python, FastAPI, SQLAlchemy, PostgreSQL (asyncpg), Alembic, Socket.IO, Pydantic, Redis, aiobotocore, MindsDB, APScheduler

Tracking Cryptocurrency Platform

Backend Developer
Duration:

1 year

Domains:
Cryptocurrency FinTech
Project Description:

Developed the backend for a mobile-optimized cryptocurrency tracking app with real-time asset monitoring, virtual wallets supporting crypto, forex, and stocks, and multilingual investor communities. Built WebSocket-based chat with role management, integrated Firebase notifications for price alerts, and implemented promo code and affiliate systems.

Tools & Technologies:

Python, FastAPI, SQLAlchemy, PostgreSQL (asyncpg), Alembic, Socket.IO, Pydantic, Celery, Redis, Sentry, aiobotocore, Firebase Admin SDK, Pytest

Master's Degree in Computer Science (Control Systems and Technologies)

Kharkiv National University of Radio Electronics

Bachelor's Degree in Computer Science

Kharkiv National University of Radio Electronics

Associate Cloud Engineer Certification

Provider: Google Cloud

Associate Cloud Engineer Certification

Provider: Google Cloud
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