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Herasymets Illia

🌞 🌜

Backend-Focused Full-Stack Developer

Building production web applications, internal systems and customer-facing platforms.

About

Backend-focused Full-Stack Developer with commercial experience building production web applications, internal systems and customer-facing platforms.

Experienced across Node.js, Vue.js, REST APIs, SQL databases and production infrastructure, with hands-on experience integrating AI features into commercial and personal projects.

Work Experience

GoldenStay

Full-Stack Developer

Dec 2024 — Present

Production property management and booking platform connected to Airbnb, Booking.com and other reservation channels through Rentals United.

  • Developed and maintained customer-facing web applications and internal management tools.
  • Built a secure guest portal with token-based authentication, reservation management and an AI assistant using property-specific information.
  • Designed REST APIs and expanded the database schema for new product features and business workflows.
  • Developed integrations, including a custom WordPress plugin and protected API endpoints.
  • Supported production deployments and CI/CD using Linux, Nginx, TLS certificates and GitHub Actions.

RedBird Cafe

Frontend Developer

Nov 2023 — Dec 2023

Improved application performance and resolved production frontend issues in an existing Vue.js application.

CAC Tour / CAC Edu

Backend Developer

Oct 2023

Fixed backend issues and implemented improvements in Fastify-based commercial applications.

Estet

Python Developer

May 2023 — 2024

Built data-processing tools using Python, including generating, parsing and transforming large XML datasets for product synchronisation.

Amrita

Part-Time Full-Stack Developer

Jul 2022 — Mar 2023

Rebuilt and maintained an e-commerce platform using Laravel, Vue.js and MySQL, delivering new business features and ongoing improvements on a part-time basis.

Save-Health

Full-Stack Developer

2022

Developed new features for a healthcare platform used by posture specialists as part of a two-developer Laravel and Vue.js team.

Stack

Backend

JavaScript Node.js Fastify REST APIs PHP Laravel

Frontend

Vue.js Pinia Vue Router HTML5 CSS3 SCSS

Databases

MySQL PostgreSQL Prisma SQL

Infrastructure

Linux Nginx Docker GitHub Actions Git TLS

AI

OpenAI API Tool Calling Prompt Engineering Speech-to-Text Cursor Codex

Other

JWT Python Telegram Bots

Languages

English — Fluent

Ukrainian — Native

Russian — Native