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Yaroslav Sadovskyi
Software Engineer | Python (Django) | React | AI Integrations
[відкрити контакти](див. вище в блоці «контактна інформація») Lviv, Ukraine (Remote / Relocation)

Profiles
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Summary
Results-driven Full-Stack Software Engineer with 5 years of commercial experience specializing in Python (Django / DRF) and React.
Proven track record in designing robust database architectures, building scalable REST APIs, and implementing automated workflows
and AI/LLM integrations. Expert in optimizing backend performance and developing clean, responsive user interfaces. Adept at
transforming complex business requirements into high-performing, production-ready applications.

Education
Lviv Polytechnic National University Bachelor's Degree
Computer Science Lviv, Ukraine • 2021 — 2025
• Core Focus: Software engineering, algorithms and data structures, object-oriented programming, and database design.

• Bachelor's Thesis: Designed and developed a custom messenger application, focusing on software architecture, secure
communication protocols, and efficient data handling.

Skills
Backend Development Frontend Development
Python, Django, Django REST Framework (DRF), REST API, FastAPI React, JavaScript, TypeScript, HTML5, CSS3, NextJs

Databases & Architecture AI & Automation
PostgreSQL, Database Design, SQL Optimization, Git, Linux, MySQL, LLM Integration, API Integration, AI Automation, Telegram Bots
MongoDB

Experience
Loyalty Point Warsaw, Poland
Full-Stack / Backend Engineer 2022-2023
• Developed and maintained robust backend services and business logic utilizing C# and .NET framework.

• Created dynamic, component-based user interfaces on the frontend using React, ensuring seamless integration with
backend APIs.

• Worked on database optimization and wrote efficient queries to handle application data.

• Debugged complex system issues and refactored legacy code to improve application stability and performance.

Woki Kyiv, Ukraine (Remote )
Full-Stack / Backend Engineer 2023-2024
• Designed and developed scalable REST APIs using Python (Django REST Framework), ensuring secure and efficient
data handling.

• Built and optimized relational database schemas in PostgreSQL, significantly reducing query response times for
high-load features.

• Implemented dynamic, responsive front-end components using React, improving user experience and application
interactivity.

• Collaborated with cross-functional teams to integrate third-party services and maintain clean, production-ready code.
Freelance / Independent Contractor Lviv, Ukraine
Full-Stack Software Engineer (Python / React) 2024-2026
• Designed and implemented custom CRM and automation platforms from scratch, developing robust database schemas
and role-based access control systems.

• Integrated Large Language Models (LLMs) via API and built intelligent AI-driven automation workflows and interactive
Telegram bots.

• Developed responsive, user-friendly dashboards using React tailored to specific business management needs.

• Gathered business requirements directly from clients, translating them into scalable technical architectures and
production-ready code.

Certifications
Python Complex Certification 2024
Okten School
• Completed an intensive, comprehensive training program focused on Python development, clean code practices, and
software architecture.

• Developed practical skills in building backend systems, handling complex data structures, and implementing modern
programming methodologies.

Projects
Next-Gen CRM & AI-Driven Business Automation Platform 2024-2025
• Designed and engineered a sophisticated, high-performance CRM and automation ecosystem from scratch tailored for
modern enterprise needs.

• Architected a robust, high-load database schema with role-based access control (RBAC) layers ensuring bulletproof data
security and persistence.

• Built an intelligent AI automation core, integrating Large Language Models (LLMs) via API to handle autonomous
communication workflows and smart data analysis.

• Developed intelligent, interactive messaging modules and automated Telegram bots capable of real-time client
interaction and business operations routing.

Custom Messaging Application & Architecture 2025-2026
• Designed and developed a fully functional, production-ready custom messaging platform from the ground up, showcasing
strong software architecture principles.

• Implemented secure user authentication mechanisms, structured messaging protocols, and efficient data serialization
layers.

• Formulated and optimized complex relational database models to guarantee high availability, reliable message state
tracking, and fast query execution.

Languages
English
Intermediate (B1)

Ukrainian
Native

Polish
Upper-Intermediate (B2)