Горгула-Коваленко

Sebastian Horhula-Kovalenko
Junior Software Engineer
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Linz, Austria | github.comSebastian-null

Summary

Full-stack developer with 1.5+ year of experience developing various types and levels of projects using React, JS,
Next.js, Type Script, Tailwind CSS, Python. IELTS-certified C1 English speaker with hands-on experience contributing
to the full software development lifecycle within a lean agile team, taking products from initial concept to deployment.

Work Experience

Full-stack developer at LonelySoft

September 2024 (September) – 2026 (June)
Team Impact
• I directed the software development lifecycle within a lean agile framework as I guided digital products from early
concepts to the production stage.
• The integration of artificial intelligence tools into daily engineering workflows was my responsibility and this increased
the speed of programming plus peer reviews while I maintained high standards of accuracy.
• I designed full stack systems using Next.js, TypeScript & Node.js so that the software handles large volumes of data
and users with the speed required by major corporations.
• To improve efficiency, I adjusted cloud infrastructure but also created automated continuous integration and
continuous delivery pipelines with Docker or AWS for deployments that are frequent as well as consistent.
• By using English language skills at the C1 level, I ensured that different departments worked toward the same goals
next to I converted the requests of clients into technical documentation.

Skills Gained
• Full-Stack Architecture and AI-Driven Development (Next.js, TypeScript, Node.js, AI in Daily Engineering Workflows)
• End-to-End Product Delivery & Cloud Ops – driving 20 projects from scratch to production deployment with Docker
and AWS
• Technical Leadership & Client Communication Leading lean agile teams and translating business needs into code
Fluent in English (C1 level)

Key skills

Languages: Libraries: Frameworks: Key services and tools:

• HTML / CSS • aiogram • React • npm
• JavaScript • Node.js • React Native • git
• TypeScript • capacitor-firebase • Vite • Supabase
• Python • p5.js • Tailwind CSS • Firebase CLI
• Capacitor • Capacitor
• Next.js • PostgreSQL

Pet-projects

BRIEFS
BRIEFS, an underwear store with a back office for staff (personal project). Storefront in Next.js and TypeScript, API in
FastAPI on PostgreSQL, back office in HTMX. Payment through Stripe, an order turns paid only after the webhook.
One docker compose up to run, 104 pytest tests in CI.
View on Github

Pc.Builder.AI
PCBuilderAI is my side project: you describe in plain text what you need a computer for and your budget, and it puts
together a parts list and explains the choices. I built it alone with Next.js, React, TypeScript and Supabase. The
interface is in Ukrainian and English. It's in beta right now, the picker runs on my own rules, and hooking up a model is
the next step.
View on Github

Education

Ai and robotics – JKU - Johannes Kepler University Linz
September 2026 – Present

2