Savelii

Savelii Prysiazhnyi
Full-Stack Developer
Kyiv, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | GitHub | LinkedIn

Professional Summary
Full-Stack Developer specializing in Node.js, focused on designing scalable architectures and developing with AI-
driven workflows. Strong experience in applying design patterns to refactor code for readability and maintainability,
writing comprehensive tests, and automating deployments using Docker and CI/CD pipelines.

Skills
Languages: JavaScript, TypeScript, Python
Platforms & Frameworks: Node.js, Bun, Fastify, Hono, Django, React
Infrastructure & DevOps: PostgreSQL, Redis, Docker, Docker Compose, GitHub Actions CI/CD, Hosting
(Heroku, Vercel)
Testing: node:test, Jest
Patterns & Principles: GoF (Creational patterns, Adapter, Decorator, Observer), SOLID, DI, IoC
Networking: OSI Model, TCP/IP
AI: Agentic Development Workflow (Skills, Agents)

Human Languages
Ukrainian: Native
English: B2

Experience
ChartAlchemy | Website | GitHub Feb 2026 – May 2026
Full-Stack Engineer Kyiv, Ukraine
Web application for data visualization using LLM.
• Designed a full-stack TypeScript architecture with Fastify and React 19.
• Integrated the Google Gemini API for transforming natural-language prompts into charts, plotted using Apache
Echarts library.
• Implemented a robust JWT authentication system for secure user access, including Google OAuth sign-in.
• Integrated Redis to manage daily API quotas and implement efficient request rate-limiting.
• Developed a user-friendly dashboard for managing saved charts, improving usability and accessibility.
• Implemented a GitHub Actions CI/CD pipeline for automated testing and deployment to the cloud.

Education
Kyiv Polytechnic Institute Sep 2025 – Present
Bachelor of Science in Software Engineering Kyiv, Ukraine
Coursework: Algorithms and Data Structures, Fundamentals of programming, Computer systems and networks,
Discrete mathematics, Components of software engineering, Linear algebra, Mathematical analysis

Extracurriculars
Board of European Students of Technology (BEST) | Kyiv Polytechnic Institute

• Developing a unified healthcheck system for monitoring the availability of web services and Telegram bots with
a centralized dashboard and Telegram notifications.