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Pavlo Fitkailo [відкрити контакти](див. вище в блоці «контактна інформація»)

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[відкрити контакти](див. вище в блоці «контактна інформація»)
fi
Node.js / Backend Software Engineer

Summary
Backend Developer (Node.js, NestJS, TypeScript) with hands-on experience designing and building REST APIs, real-time
features and relational databases. Experienced with DTO validation, ACID transactions, OpenAPI/Swagger documentation,
integration testing (Jest, Supertest) and Docker Compose deployment. Focused on clean architecture, maintainable code
and scalable solutions; Open to remote and full-time Backend Developer roles.

Key Projects & Experience
Vocabify | July 2026 - Sept 2026
Tech Stack: NestJS, TypeScript, WebSockets (Socket.io), PostgreSQL, React. G itHub Live Demo
Built a full-stack vocabulary platform (NestJS, PostgreSQL/TypeORM, React 19): 6 tables, 47 REST endpoints, JWT
auth, DTO validation

Implemented 2 Socket.io gateways for live online/offline presence and instant friend-to-friend chat

Added flashcard practice, progress tracking (New/Learning/Mastered), streaks, XP and achievements; deployed
with Docker Compose (3 services) on Render

Gold Bud Trans (GBT) | Nov 2025 – Jul 2026
Tech Stack: Express.js, MySQL, JWT, React, Tailwind CSS. GitHub
Built a full-stack machinery rental platform (React 19, Express 5, MySQL): 12-table schema, 55 REST endpoints
with OpenAPI docs, JWT + role-based access, ACID order transactions

Delivered admin analytics (Chart.js, XLSX export), PDF invoices and Telegram/email order alerts

Covered the API with Jest/Supertest tests; Docker Compose setup (3 services)

Telegram Client Automation Tool | March 2025 - May 2025
Tech Stack: Node.js, Telegram MTProto API, REST APIs, JSON/FS.
Built a Node.js Telegram userbot (MTProto API) automating bulk messaging, message deletion and chat
management from a personal account

Added language-tag translation via an external REST API and AI-generated replies through an LLM API

Skills
Programming: TypeScript, JavaScript and SQ L

Backend: Node.js, NestJS, Express.js, RESTful APIs, WebSockets

AI Tools: Google Antigravity, AI-assisted development (code review of generated code, debugging)

Databases & ORM: PostgreSQL, MySQL, Redis, TypeORM, Prisma

Architecture & Security: Clean Architecture, Dependency Injection, JWT, DTO Validation

Tools & DevOps: Git, GitHub, Postman, Docker, Docker Compose
Education
TNT U – B.Sc. AI & Data Science, expected 2029

TNTU College – Software Engineering, Honours diploma, Sept 2022 – Jun 2026
Languages: U krainian - Native | English - B2