Available

Hey, I'm
Vladislav (sm1le)

Backend engineer focused on building scalable, data-driven systems with Python and robust relational database design. Prioritizing performance, reliability, and security, with working knowledge of frontend development.

My Skills

Mini Game

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🍋

🔔

• Available for new projects! • Available for new projects! • Available for new projects!

Education

Kyiv Aviation Institute

Professional Junior Bachelor in Software Engineering

Software Development · 2021–2025

2021–2025

Technical Arsenal

Tools and technologies I use to design systems.

Languages

English

Czech

Russian

Native

Ukrainian

Native

Frontend

HTML5

React

JavaScript

Tailwind CSS

Backend & Infrastructure

FastAPI

Python

PostgreSQL

SQLAlchemy

Redis

Celery

Docker

Git

Alembic

Pytest

CI/CD

Soft Skills

TeamworkAgile/Scrum collaboration

CommunicationTechnical articulation

OpennessNetworking & contribution

Work Experience

Jan 2024 – Present

Backend & Full-stack Developer

Built and deployed 2 production-oriented FastAPI applications with PostgreSQL and Redis. Developed authentication and session systems, Stripe payments, email verification and password recovery, Celery background jobs, Alembic migrations, automated testing and CI/CD.

Secure auth, sessions, CSRF and account recovery

PostgreSQL, Redis, SQLAlchemy and Alembic

Stripe integrations and Celery background processing

Pytest, CI/CD, Docker and production deployment

Production work

Systems built & verified

Live applications

190

Automated tests

7/7

CI gates passing

87.03%

Test coverage

Completed Projects

Production-oriented Backend

TaskPulse

Production-oriented task management backend built with FastAPI, PostgreSQL, Redis and Celery. Implemented JWT authentication with HttpOnly cookies, refresh-token rotation, CSRF, RBAC, IDOR protection, rate limiting, caching and idempotent background jobs. Added N+1 query protection, automated testing and CI/CD with production Alembic migrations.

JWT, HttpOnly cookies, CSRF, RBAC & IDOR protection

PostgreSQL + Redis caching, rate limiting & idempotency

Celery background processing & asynchronous reports

62 tests · 87.03% coverage · N+1 regression protection

Tests passing

87.03%

Test coverage

≤2

SELECTs / task list

20/min

Requests / IP

Local API benchmark100 sequential requests

GET /health · P95

1.56 ms

GET /tasks/ · P95

4.93 ms

PythonFastAPIPostgreSQLSQLAlchemyRedisCeleryDockerPytestAlembicGitHub Actions

Live Preview

taskpulse-f5zy.onrender.com

Production Fitness SaaS

Sm1le-Fitness

Fitness SaaS built with FastAPI, PostgreSQL and Redis. Implemented secure account flows, Stripe payments, personalized training and nutrition plans, PDF exports, automated testing and production CI/CD.

Secure sessions, CSRF, email verification & password recovery

PostgreSQL + Redis, Alembic migrations & readiness checks

Stripe payments, personalized plans & PDF exports

128 tests · 7/7 CI gates · production smoke verification

128

Tests passing

7/7

CI gates passing

200

VUs within SLO

Request failures

k6 capacity validation3 × 60s · PostgreSQL + Redis readiness path