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Work experience

Fullstack-розробник

from 09.2025 to now (11 months)
Фундація «Незламна Україна»/ Foundation Unbreakable Ukraine, Дистанційно (Освіта, наука)

• Backend Architecture: Built backend services in Layered Architecture (Node.js/Express.js/TypeScript) on raw PostgreSQL with custom migrations or Prisma
• Authentication & Authorization: Designed a full auth system from scratch: OAuth 2.0 server with PKCE, JWT with refresh-token rotation, and fine-grained RBAC middleware for permission-based access control
• MCP Integration: Built MCP (Model Context Protocol) servers and clients exposing tools over HTTP, secured with OAuth 2.0
• AI Integrations: Integrated OpenAI, ElevenLabs, and Runpod APIs for AI-powered features (LLM, speech, image/video generation)
• Real-time Communication: Implemented Server-Sent Events for live progress updates and WebSocket-based real-time chat with streaming responses
• PWA & Offline Support: Built a PWA with Workbox service-worker caching, Cache API-based media storage, and IndexedDB-backed offline data sync (including an offline test-submission queue)
• Security & Observability: Hardened APIs with custom rate limiting, structured logging (Pino), and security middleware (helmet, CORS allowlists)
• File Storage: Built a custom file storage service for media upload, retrieval, and deletion with path-traversal protection and project-scoped directory organization
• Frontend Development: Built React SPAs with TypeScript, Vite, React Router v7, and form validation using Zod + React Hook Form
• Internationalization: Localized applications for multiple languages using i18next
• Documentation: Authored a Docusaurus documentation site covering architecture, user guides, and API reference

Fullstack-розробник

from 05.2024 to 08.2025 (1 year 4 months)
Fernir, Дистанційно (IT)

• SaaS Development: Developed and maintained SaaS applications using Next.js (TypeScript), integrating both front-end and server-side APIs
• Frontend Development: Built and styled responsive user interfaces with React.js, Next.js, Tailwind CSS, and shadcn/ui
• Backend Architecture: Designed and implemented RESTful APIs using Node.js, Drizzle ORM, and PostgreSQL
• Authentication: Integrated Lucia authentication for secure user sessions
• Payments & Subscriptions: Implemented Stripe API for payment processing and subscription management
• Testing & Quality: Wrote and executed unit and end-to-end tests using Jest and Playwright, ensuring software quality and reliability
• Team Collaboration: Collaborated in an Agile team environment, delivering scalable and high-performance solutions

Education

Національний технічний університет України "Київський політехнічний інститут імені Ігоря Сікорського"

Факультет інформатики та обчислювальної техніки, інженер програмного забезпечення, Київ
Higher, from 2020 to 2024 (4 years)

Additional education and certificates

Softserve, Practical React Course

2024, 2 місяці
Certificate

AWS Cloud Technical Essentials

2022
Certificate

IELTS: 6.0(B2)

2026
Certificate

Knowledge and skills

• Playwright
• Radix
• HTML
• CSS
• JavaScript
• Git
• React
• TypeScript
• Bootstrap
• Node.js
• Jest
• Material UI
• Docker
• REST API
• Knowledge of OOP principles
• Linux
• Next.js
• Vercel
• PostgreSQL
• Tailwind CSS
• Drizzle
• Kubernetes
• SOLID Principles
• DRY
• React Router
• Express.js
• JSON Web Token
• React Hook Form
• GitHub
• SQL
• GitLab
• Npm
• Stripe
• CI/CD
• Postman
• REST
• Figma
• Progressive Web App
• OpenAI
• WebSocket
• Prisma ORM
• NestJS

Language proficiencies

• English — above average
• Ukrainian — fluent