Technical Support · QA · AI Automation

Mark Antonenko

Routine, automated. People, cared for. I build systems that take routine work off people's hands, and keep every conversation with clients human.

Download CV Message on Telegram

20+apartments run on a system I built

4.9client communication rating

1-5 mintypical reply time to a guest

3.5 yearsin a SaaS product team

Selected work

The system behind 20+ apartments.

Guest messages, cleaning schedules and repairs used to be handled by hand. I turned them into one system that runs every day, while the client communication rating stays at 4.9.

Fast answers

Standard guest questions are answered within 1 to 5 minutes, from a fact base for each apartment.

A person in the loop

Anything unusual comes to me with a ready reply to approve. Nothing goes out unchecked.

Staff on schedule

Cleaning and maintenance plans are built from live bookings and sent to the team automatically.

Experience

Operations Manager

Short-term rental company, Vienna · Remote · Since July 2026

Built a system that runs the business of 20+ apartments and kept the client communication rating steadily at 4.9.
Handled guest requests, conflicts and urgent repairs; coordinated cleaning staff and maintenance.

Logistics SaaS company

Trucking dispatch CRM and driver mobile app · Remote · January 2023 to June 2026

Project Manager2026

The link between the client and a 7-person team: requests into tasks, client feedback, releases every one to two weeks.

QA Engineer2024 to 2025

Tested the iOS driver app and a large web CRM: regression and release testing, clear bug reports, Postman, Jira.

Full-stack Developer2023 to 2024

CRM features in Angular and REST APIs in Node.js, with Stripe, Google Maps and Firebase integrations.

Freelance QA and Front-end Developer

US fuel tax reporting service for trucking · February to August 2024

Unit tests and front-end features: data tables and a small marketing website.

Skills

Support: Chat and email support, issue resolution, escalation, ticket triage, knowledge bases.
Quality assurance: Functional, regression and release testing of web and iOS apps, test cases, bug reports, Postman.
Coordination: Requirements, task breakdown, releases and client communication in Jira, GitLab and Notion.
Technology: TypeScript, Angular, Node.js, MongoDB, SQL basics, Claude API, Telegram bots.
Languages: Ukrainian and Russian, native. English, B2.

Contact

Let's work together.

Open to remote roles in customer support, technical support, QA and project coordination. Telegram is the fastest way to reach me.

Telegram @mark4121 mark.antonenko57@gmail.com