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ROSTYSLAV
MARCHUK
Product-minded Python Developer
Applied AI and LLM Applications

EXPERIENCE PROFILE

2026-now Divena Product-minded software
Founder and Python Developer developer and founder focused on
• Developing an AI assistant that helps users reflect on emotionally Python, applied AI, and end-to-end
charged situations. product development.
• Built the Python application, Telegram bot, OpenAI API
integration, prompt-based conversation flow, session logic, CONTACT
safety checks, and response evaluation.
LOCATION
2024-2025 Blockchain Analytics Systems Kyiv, Ukraine
Python Developer PHONE

• Built blockchain analytics systems in Python. Project details are [open contact info](look above in the "contact info" section)
confidential under NDA. EMAIL
[open contact info](look above in the "contact info" section)
2022-2025 PRODUCTS
Algorithmic Trading System
ronyasoft.com
Independent Developer
divena.io
• Developed a Python/Flask trading system with rebalancing logic
and custom TradingView indicators in Pine Script.
TECHNICAL SKILLS
2003-now RonyaSoft
CORE
Founder and Software Developer Python, Flask, OpenAI API, LLM
• Created and shipped Windows graphics and printing applications, prompting, Telegram bots
including a virtual printer, with Delphi/Object Pascal and C++. DATABASES
• Handled development, testing, releases, customer support, SQL, PostgreSQL, MongoDB
marketing, and sales. TOOLS
Codex, Git, PyCharm, VS Code
2020-2021 E-commerce CRM ADDITIONAL
Software Developer Delphi / Object Pascal, C++,
JavaScript, Google Apps Script,
• Built a custom CRM that automated Etsy order processing using
Pine Script, HTML / CSS
Google Apps Script and JavaScript.

STRENGTHS
EDUCATION
• Analytical thinking
• Product thinking
1999-2004 Lutsk State Technical University • Persistence
Master's degree in Industrial Automation and • Curiosity
Computer-Integrated Technologies • Clear communication
• Thesis project: Development of a Video Surveillance System.
LANGUAGES
2020-2021 Taras Shevchenko National University of Kyiv
Master's degree in Psychology UKRAINIAN Native
ENGLISH B1-B2