IT Specialist · Automation and Full-Stack · AI Voice Agents · Full-Stack AI Products
Tetiana Kotolup
n8n · OpenAI GPT-4o · Anthropic Claude · Telegram Bot API · AI Voice Agents · Node.js · TypeScript · PostgreSQL · React
I design and build production-ready AI automations, voice agents, and full-stack AI products — from n8n pipelines and AI phone agents to SaaS backends with PostgreSQL. From idea to live system, systematically and predictably.
17
Projects
9
Certificates
3
Case studies
4
Languages · CZ EN RU UA
01
About me
Who I am
Tetiana Kotolup — IT Specialist · Automation and Full-Stack. I build n8n automations, AI voice agents, Telegram AI bots, and full-stack AI SaaS products with Node.js, TypeScript, PostgreSQL, OpenAI, Anthropic Claude and React.
Education
Junior Specialist Diploma Cherkasy State Business College · 2017 Specialization: Computer Systems Technician — Group leader (starosta) throughout studies
✓ Nostrified in CZ · 18-20-M/01 Informační technologie · KÚ JMK 2021
Completing the AI No-Code Developer program. 4 live AI SaaS products deployed in production.
My approach
Analyse business processes and find time-loss bottlenecks
Design AI-agent logic tailored to the specific task
Build AI voice agents with natural conversation flow
Deploy production backends with PostgreSQL, Prisma, Supabase
Test on real scenarios and optimise token costs
Evaluate ROI of automation and SaaS implementation
Delivered production web applications across Real Estate & Construction and e-commerce industries — full cycle from requirements to deployment:
Eco Italia Link — full-stack React + Node.js online shop with product catalog, cart, checkout, admin panel and email notifications. Deployed on Railway. [GitHub]
HouseFixBrno Link — business website for a construction company. End-to-end: client communication, design, frontend & backend, testing, deployment. [GitHub]
Built landing pages, multi-page sites and portfolio sites; integrated contact forms, product catalogs and basic CMS functionality.
n8n pipelines with complex branching, error handling, scheduled jobs, retry logic and webhook triggers. Used across all 12 n8n projects including LegisFlow, GrowthLab AI and AI call analytics.
02
AI Voice Agents
Building AI voice agents with Vapi, Retell AI, Bland AI — natural conversation flow, function calling, CRM integration, appointment booking. Voice-first AI systems for sales and support automation.
03
AI Integration & Prompting
OpenAI GPT-4o / GPT-4o-mini, Anthropic Claude, structured JSON output, multi-model ensemble evaluation, chunking for large documents, Financial DNA modeling, BANT qualification systems.
04
Telegram Bot Development
Production Telegram bots via Telegraf (Node.js) and n8n: command routing, real-time alerts, voice processing, DALL-E image generation, usage-based SaaS limits. 6+ bots live in production.
05
Backend & API Development
Node.js / TypeScript, Express.js REST APIs, JWT authentication, webhook-based event pipelines. Applied in WealthMirror AI, GrowthLab AI and AI CRM — deployed on Render and Vercel.
06
Database & ORM
PostgreSQL with Prisma ORM, Supabase managed instances. Designed schemas for CRM (clients + appointments), financial user data, sales pipelines, usage quotas and SaaS monetization logic.
07
API & Service Integrations
Google Suite APIs (Sheets, Calendar, Drive, Gmail), Zoho CRM, AssemblyAI, CoinGecko, OpenWeatherMap, PrivatBank, NocoDB DataTable. 12+ third-party integrations across projects.
08
Voice & Image AI
AssemblyAI transcription pipeline with 30-sec polling, DALL-E 3 image generation from voice messages, PDF text extraction with chunking, voice-to-structured-data pipelines.
09
Frontend & React
React.js dashboard for AI CRM — client management, appointment views, real-time webhook sync. HTML/CSS responsive interfaces, Vercel deployments. LegisFlow and GrowthLab web interfaces.
04
Certificates
GoIT · Course Certificate · Unique ID 46370
AI Automator
243-hour program: no-code automation with n8n, prompt engineering & AI agents, marketing/sales/customer-service automation, production-ready AI agent build
AI Sales Ecosystem · n8n + Claude + Zoho CRM + Telegram
GrowthLab AI Sales Automation Ecosystem
Company couldn't understand why leads were lost. Built AI ecosystem that qualifies leads automatically, analyzes all dialogues, and sends CEO reports to Telegram — 3 interconnected workflows running 24/7.
8 roles across Czech Republic & Ukraine — click to expand
+8 roles
AI & Digital Project Specialist (DPČ)
VIA BASILICATA / Dalla Basilicata al mondo · Eduard Korolov
Sep 2026 – present · Secondary employment (DPČ)
Digital marketing, website management and e-commerce support for an international project spanning Italy, the Czech Republic, Europe, and other countries worldwide
Content creation, social media management, and basic IT & administrative support — fully remote
Driver — Medical Supplies Distribution
Hordin s.r.o.
Jul 2025 – Mar 2026 · Permanent position
Safe and timely distribution of medicines and medical supplies across the entire Czech Republic
Reliability and strict adherence to route and time schedules
Secondary Employment (DPČ)
Nov 2025 – Mar 2026
Supplementary work agreement alongside the main position
Road Freight Transport — Own Business Permit
OSVČ · Trade licence
Valid indefinitely from 30 Oct 2024
National transport with vehicles up to 3.5 t (goods or animals)
International transport with vehicles up to 2.5 t (goods or animals)
CZ-NACE classification: road freight transport
Self-Employed (OSVČ)
Apr – Jun 2025 (4 months)
Independent business activity under a trade licence
Textile Production Worker
Nová Mosilana, a.s. · Brno-Černovice
Mar 2018 – Mar 2025 (7 years)
Operating machinery and equipment in fibre processing
Long-term, stable role in a production environment
Training and onboarding new employees
Physical endurance and emotional resilience under production pressure
Electrical Assembly Worker
TOV "UKR TECH" · Cherkasy, Ukraine
Jun 2017 – Jan 2018
Soldering operator, assembly of voltage stabilisers
Training and onboarding staff, team supervision
Vehicle servicing
Sales Assistant
DELIKAT · Cherkasy, Ukraine
Oct 2016 – May 2017
Customer care, operating office equipment
Training and onboarding staff, preparing documentation
Various Seasonal & Side Jobs
Czech Republic & Ukraine
2013 – 2025 · alongside main employment
Short-term and seasonal roles (brigády) taken in parallel with full-time positions in both countries
Comfortable adapting quickly to new teams, tools, and work environments
IT Intern — Networking & Server Setup
Maklaut · Cherkasy, Ukraine
2016 (3-month internship)
Wi-Fi cabling and network installation in residential buildings
Basic server setup and configuration on-site
PC Repair & Cleaning
Freelance · Ukraine
Ongoing · hobby & side income
Hardware cleaning, troubleshooting, and repair for friends and local clients
Started as a hobby, grew into a small, steady source of extra income
Driving licence, category B (Czech Republic) — active driver
What This Experience Delivers
Transferable skills built over years of hands-on, accountable work — the same discipline now applied to automation projects.
Reliability under pressure
7 years in one production role with zero disruption; on-time medical logistics with no missed deadlines.
People leadership
Repeatedly trusted to train and onboard new staff across three different companies — including as elected group leader in college.
Logistics & route planning
Safe, on-time distribution of regulated medical materials nationwide under strict time windows.
Resilience & focus
Years of demanding production work — staying calm, precise, and productive under sustained physical and time pressure.
Technical precision
Soldering, assembly, and machine operation — the same attention to detail I now bring to debugging automation workflows.
Ownership & accountability
Ran my own licensed transport business and OSVČ activity — full responsibility for outcomes, not just tasks.
08
FAQ
Frequently Asked Questions
6 questions — click to expand
+6
Who is Tetiana Kotolup?
Tetiana Kotolup is an IT Specialist · Automation and Full-Stack based in Brno, Czech Republic, specializing in n8n workflow automation, AI voice agents, Telegram AI bots, and full-stack AI SaaS products built with OpenAI GPT-4o, Anthropic Claude, Node.js, and PostgreSQL.
What services does Tetiana Kotolup provide?
She designs and builds production-ready n8n automation workflows, AI voice agents for sales and support, Telegram AI bots, and full-stack AI SaaS products — from initial process analysis through deployment on platforms like Render, Vercel, and Railway.
What technologies does Tetiana Kotolup work with?
Her core stack includes n8n, OpenAI GPT-4o, Anthropic Claude, Telegram Bot API, Node.js, TypeScript, Express.js, React.js, PostgreSQL, Prisma ORM, Supabase, and voice AI platforms such as Vapi, Retell AI, and Bland AI.
Where is Tetiana Kotolup located and does she work remotely?
She is based in Brno, Czech Republic, and works remotely with clients internationally.
Self-development is a big part of her life — she reads widely across many fields and puts what she learns into practice. She also dances, runs, trains with kettlebells, and enjoys extreme driving to stay disciplined and energized outside the screen.
