Марк

Mark Antonenko
AI Automation Specialist | Business Process Automation
Ukraine, remote · [open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · Telegram @mark4121 · antonenkoo.github.io

SUMMARY

I turn manual business processes into working systems with AI. Since mid-2026 I have built and run the system
behind a 20+ apartment rental business: an LLM answers standard guest questions within 1 to 5 minutes from a fact
base for each apartment, Telegram bots coordinate cleaning and maintenance, and the client communication rating
stays at 4.9. Before that, 3.5 years in a logistics SaaS as full-stack developer, QA engineer and project manager, so I
can connect APIs, test what I build and talk to the business side.

EXPERIENCE

Operations Manager · Short-term rental company, Vienna (remote) Jul 2026 - Present
Built a system that runs the business of 20+ apartments and kept the client communication rating steadily at 4.9.
AI answers standard guest questions within 1 to 5 minutes and passes the rest to me with a ready reply; each
apartment has its own fact base.
Stack: TypeScript, Node.js, MongoDB, Claude API, Hostaway API; 650+ merged changes in 3 months with AI-
assisted development and automated tests.
Handled guest requests, conflicts and urgent repairs; coordinated cleaning staff and maintenance through
Telegram bots and schedules built from live bookings.

Logistics SaaS company · trucking dispatch CRM, driver mobile app (remote) Jan 2023 - Jun 2026
Full-stack Developer Jan 2023 - Aug 2024
Built CRM features in Angular (NgRx) and REST APIs in Node.js; integrations with Stripe, Google Maps, Firebase
and Sentry.
Project Manager Jan 2026 - Jun 2026
Link between the client and a 7-person team: turned requests into tasks and tracked delivery.
Coordinated weekly or bi-weekly releases; tasks in GitLab, Jira and Notion.
QA Engineer Sep 2024 - Dec 2025
Wrote test cases and bug reports with AI assistance; checked APIs and data with Insomnia and Postman.

Freelance QA & Front-end Developer · US fuel tax reporting for trucking Feb 2024 - Aug 2024
Wrote unit tests and built front-end features: data tables and a small marketing website.

SKILLS

AI & LLM Claude API, Claude Code, prompt design, knowledge bases for LLM answers, AI-assisted
development
Automation Telegram bots, webhooks, REST API integrations (Hostaway, Stripe, Google Maps), scheduled
jobs, Docker
Tech TypeScript, JavaScript, Node.js, MongoDB, Angular, SQL (basic), Git
Process Mapping manual workflows, requirements, testing before release, client communication

TRAINING LANGUAGES

Full Stack Web Development course (2021 - 2022) Ukrainian: native · Russian: native
GoIT English: B2