👋 Hi, I'm Ihor Dubii
💻 Senior Software Engineer • System Architect • IoT Engineer
🌍 Based in Poland
🧠 Designing scalable backend systems, real-time platforms, and secure identity solutions
🚀 About Me
I design and build production-grade systems across backend, frontend, and infrastructure with a strong focus on scalability, reliability, and clean architecture.
My work spans distributed systems, identity protocols, IoT platforms, and large-scale web applications.
I enjoy solving complex engineering problems and turning them into maintainable, well-designed systems.
📄 CV:
👉 https://docs.google.com/document/d/1BxQ2XjYolpAgPuvs9ko7pSYYQOL7URH7smFmGZnXERo/edit?usp=sharing
🧠 Expertise
- ⚙️ Distributed systems & backend architecture
- 🔐 Identity & authentication systems
- 🪪 OID4VC / Verifiable Credentials
- 🌐 High-performance APIs
- 📡 IoT telemetry platforms
- 🏗 Infrastructure & DevOps
- 🧩 Large frontend applications
🛠 Tech Stack
Backend
- Node.js / TypeScript
- NestJS
- PostgreSQL / MySQL / Redis
- Elasticsearch
- MQTT
- REST / WebSockets
Identity & Security
- OIDC / OAuth2
- OID4VC
- JWT / token-based auth
- Credential issuance flows
Frontend
- Vue 3 / Vite / Vuetify
- React
- Angular
- Capacitor
Infrastructure
- Docker / Docker Compose
- Linux / Ubuntu
- AWS
- Cloudflare
- Traefik / Nginx
Hardware / IoT
- ESP32
- Sensors / telemetry
- Home Assistant
- Embedded integrations
🧪 Selected Work Areas
- Financial systems & transaction processing
- IoT monitoring and automation platforms
- AI-powered assistants
- Homelab infrastructure and self-hosted platforms
- Identity and credential issuance systems