Senior Backend Developer • Security Enthusiast • IoT Hobbyist
Welcome to my GitHub!
I'm a Senior Backend Developer from Lithuania with a strong focus on building secure, scalable and maintainable backend systems. I specialize in TypeScript, Node.js, NestJS, and modern API architecture.
I enjoy solving complex problems, improving system reliability, and designing clean backend modules with strong boundaries and clear contracts. Recently, I’ve been expanding into application security and electronics/IoT, combining software with real‑world hardware.
- Backend Architecture (TypeScript, Node.js, NestJS)
Modular design, clean boundaries, secure APIs, integration with external services. - Security & Observability
OWASP practices, encryption, authentication flows, logging, monitoring. - Database Design & Performance
MongoDB, PostgreSQL, indexing, query optimization. - IoT & Electronics (new path)
Arduino, sensors, prototyping, secure device-to-cloud communication.
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Migraine Tracker App
Full-stack project with secure NestJS monolith + React dashboard.
OAuth login, encrypted data, weather/solar integrations, multi-module backend. -
IoT Temperature Sensor Prototype
Arduino Uno + sensor → secure API ingestion → dashboard visualization.
- Application Security (OWASP, threat modeling, audits)
- Electronics & IoT (Arduino, ESP32, sensors)
- Python for data processing and automation
- TypeScript/NestJS backend projects
- Security-focused applications
- IoT prototypes and device-to-cloud integrations
JavaScript, TypeScript, Node.js, NestJS, backend architecture, API design, databases, security basics, IoT prototyping.
- Email: float45@gmail.com
- LinkedIn: https://www.linkedin.com/in/wirtaw/
- Blog: https://wirtaw.github.io/blog
- I enjoy weightlifting and crossfit
- I love combining software with real-world hardware
- Always exploring new ways to grow as an engineer