Alex Sotiriou

I build full-stack products with a strong frontend backbone—component-based architecture, reactive state management, and performance-first UI. In recent work, I architected and owned a white-label, multi-tenant vehicle booking platform from a single Angular 19 codebase, serving 9 rental operators with per-vendor runtime i18n.

I’ve delivered critical customer flows end-to-end, from availability search and OTP verification to payment integration via Saferpay and real-time GPS fleet display through the Google Maps API. I also design systems for reliability and scale—implementing SSO, Webhooks, and async processing to keep integrations responsive and maintainable.

On the frontend platform side, I maintain quality through automated testing with Playwright E2E and Jest unit suites inside an Nx monorepo. I focus on practical delivery: reusable UI components, design tokens and design systems, and CI/CD pipelines deploying to Cloudflare Pages via GitLab CI.

I also expand into AI and 3D/real-time experiences, leading frontend development of IoT dashboards with interactive 3D viewers and real-time data visualization using Three.js and WebGL—optimizing rendering (lazy loading, instancing, LOD) to reduce model load times by ~60%. Alongside this, I’ve shipped LLM prompt pipelines with the Anthropic API/OpenAI, built agentic workflows with n8n, and contributed to production-grade fullstack tools—from bilingual study products to e-commerce storefronts.