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I'm Vadym Hyrenko, a Full-Stack JavaScript/TypeScript Developer with hands-on experience in building internal business automation tools, AI-powered Telegram bots, REST API integrations, and web applications. I have a strong background in Python automation, Google Sheets/Drive API, SQL-based workflows, and OpenAI API integrations to optimize business processes. I’ve built systems for HR vacation approvals, employee management, payroll data visualization, automated data extraction from 1C, customer support chat routing, and AI-assisted user communication. I also develop React/TypeScript web apps, full-stack portfolio platforms, file encryption tools, dashboards for currency/crypto/metal tracking, and automated JS testing projects.…I'm Vadym Hyrenko, a Full-Stack JavaScript/TypeScript Developer with hands-on experience in building internal business automation tools, AI-powered Telegram bots, REST API integrations, and web applications. I have a strong background in Python automation, Google Sheets/Drive API, SQL-based workflows, and OpenAI API integrations to optimize business processes. I’ve built systems for HR vacation approvals, employee management, payroll data visualization, automated data extraction from 1C, customer support chat routing, and AI-assisted user communication. I also develop React/TypeScript web apps, full-stack portfolio platforms, file encryption tools, dashboards for currency/crypto/metal tracking, and automated JS testing projects.

Vadym

Full Stack Developer, Web Developer, Front-End Developer, +2

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I'm Vadym Hyrenko, a Full-Stack JavaScript/TypeScript Developer with hands-on experience in building internal business automation tools, AI-powered Telegram bots, REST API integrations, and web applications. I have a strong background in Python automation, Google Sheets/Drive API, SQL-based workflows, and OpenAI API integrations to optimize business processes. I’ve built systems for HR vacation approvals, employee management, payroll data visualization, automated data extraction from 1C, customer support chat routing, and AI-assisted user communication. I also develop React/TypeScript web apps, full-stack portfolio platforms, file encryption tools, dashboards for currency/crypto/metal tracking, and automated JS testing projects.…I'm Vadym Hyrenko, a Full-Stack JavaScript/TypeScript Developer with hands-on experience in building internal business automation tools, AI-powered Telegram bots, REST API integrations, and web applications. I have a strong background in Python automation, Google Sheets/Drive API, SQL-based workflows, and OpenAI API integrations to optimize business processes. I’ve built systems for HR vacation approvals, employee management, payroll data visualization, automated data extraction from 1C, customer support chat routing, and AI-assisted user communication. I also develop React/TypeScript web apps, full-stack portfolio platforms, file encryption tools, dashboards for currency/crypto/metal tracking, and automated JS testing projects.

Available to hire

I’m Vadym Hyrenko, a Full-Stack JavaScript/TypeScript Developer with hands-on experience in building internal business automation tools, AI-powered Telegram bots, REST API integrations, and web applications.
I have a strong background in Python automation, Google Sheets/Drive API, SQL-based workflows, and OpenAI API integrations to optimize business processes. I’ve built systems for HR vacation approvals, employee management, payroll data visualization, automated data extraction from 1C, customer support chat routing, and AI-assisted user communication. I also develop React/TypeScript web apps, full-stack portfolio platforms, file encryption tools, dashboards for currency/crypto/metal tracking, and automated JS testing projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Ukrainian

Fluent

English

Intermediate

Work Experience

JavaScript Engineer / Automation & Full-Cycle Web Developer at FRENDT – Precision Agriculture Center

August 1, 2024 - Present

Developed an AI-powered Telegram bot integrated with OpenAI API to provide automated responses for employees and clients. Built an internal HR automation system inside Telegram Bot for vacation requests, employee vacation balance tracking, document generation, and multi-step approval flow from manager to director. Automated vacation request processing with remote submission and automatic routing for approval. Created an employee management module to track trainees, internship start dates, duration, and automatic vacation accrual. Built an internal problem/idea board via Telegram Bot; submissions trigger director notifications with reminders. Implemented AI-based knowledge base support inside Telegram Bot. Developed a manager handoff system for unresolved questions. Automated data extraction from 1C, replacing manual requests with scheduled updates. Built payroll data visualization and search logic in spreadsheets, enabling salary lookups by employee number ranges and surname matching.

Freelance JavaScript Developer at Self-employed

June 1, 2023 - October 1, 2025

Worked on independent web development projects, focusing on frontend functionality, forms, and backend integrations. Developed small websites and landing pages, implemented user input handling, and integrated data collection solutions using Google Sheets and databases. This experience strengthened practical JavaScript skills and understanding of real-world web workflows.