Full-Stack Developer · AI Architect · Cybersecurity Enthusiast
I engineer intelligent systems, automate complex workflows, and harden digital infrastructures. From zero to production — I build software that scales, performs, and stays secure.
I'm Victor Tsorakidis — a passionate Full-Stack Developer, AI Solutions Architect, and Cybersecurity enthusiast with over 10 years of hands-on experience shipping production software. I've worked across the entire stack: from low-level Linux systems administration and network security to modern React/Next.js frontends, Python backends, and AI-driven automation pipelines. My toolkit spans more than 30 technologies, and I'm always adding more.
End-to-end technology solutions — from architecture to deployment, security to automation
Custom AI pipelines using OpenAI GPT-4, local LLMs (Ollama/LLaMA), LangChain, and vector databases. I build chatbots, autonomous agents, document processing systems, content generation pipelines, and AI-driven decision engines that integrate seamlessly into your existing workflows.
Expert-level n8n workflow architecture and deployment. I design complex multi-step automations connecting hundreds of services — CRMs, ERPs, marketplaces, APIs, databases, and communication platforms. Trigger-based, scheduled, or real-time: zero manual effort, maximum reliability.
End-to-end enterprise application development: Order Management Systems, ERP modules, Inventory & Warehouse Management, CRM platforms, and BI dashboards. Built with FastAPI, React, PostgreSQL, and Docker for horizontal scalability and 99.9% uptime requirements.
VPS hardening, firewall configuration (iptables/ufw/pfSense), intrusion detection (Fail2ban, Suricata), SSL/TLS management, secure SSH configuration, vulnerability assessments, OWASP Top 10 mitigations, and penetration testing fundamentals. I build systems that resist attacks by design.
Linux server administration (Ubuntu, Debian, CentOS), Docker containerization, Nginx/Caddy reverse proxies, CI/CD pipeline setup (GitHub Actions), automated backups, monitoring (Grafana, Prometheus, Uptime Kuma), and multi-server deployment orchestration on Linode, VPS, and bare metal.
WooCommerce customization and plugin development, marketplace integrations (Skroutz, BestPrice, Google Shopping), automated XML/JSON feed generation, dynamic pricing engines, FTP/API product synchronization, and custom checkout workflows that maximize conversion rates.
Full-stack web applications with React 18, Next.js 14+, TypeScript, TailwindCSS, and modern component libraries. REST and GraphQL APIs with FastAPI, Express.js, and Node.js. I build from landing pages to multi-tenant SaaS platforms — always fast, always accessible, always SEO-optimized.
Native Android apps with Kotlin and Jetpack Compose, cross-platform solutions with React Native, and custom Windows desktop applications with Python (PyQt/Tkinter). I deliver polished, production-ready apps with intuitive UX and offline-first architectures.
Schema design, query optimization, migrations, and database administration across PostgreSQL, MySQL, SQLite, PocketBase, MongoDB, and Redis. I design data models that scale to millions of records while maintaining sub-millisecond query performance through intelligent indexing and caching strategies.
Production-grade software spanning AI, cybersecurity, enterprise systems, and e-commerce
A comprehensive Order Management System with multi-environment support, database synchronization, real-time monitoring, and a Python GUI management tool. Deployed across enterprise networks with automated CI/CD pipelines and full audit logging.
View Details
A full-featured sports club and gym management SaaS with role-based access, automated billing, PDF invoicing, POS system, athlete profiles with medical records, and a Caddy-secured HTTPS deployment pipeline.
View Details
A native Android coaching app for swimming professionals built with Kotlin and Material Design. Features intelligent workout planning, athlete performance tracking, group management, and offline-capable SQLite storage.
View Details
A high-performance WordPress/WooCommerce plugin generating fully compliant XML product feeds for Greece's top marketplaces. Handles thousands of SKUs with variations, custom pricing, stock thresholds, and WP-CLI/cron automation.
View Details
A suite of 20+ intelligent n8n automation workflows including AI-powered WooCommerce product ingestion, Ollama LLM content generation, multi-platform publishing, contact export pipelines, and a custom Portal Tools dashboard.
View Details
A modular collection of business web tools: customer search with CSV export, SSH-tunneled database access, n8n workflow orchestration, product catalog management, and an integrated auth system for secure team access.
View Details
A production AI support agent using NLP and LLM reasoning for automated Tier-1 ticket resolution, intelligent routing to human agents, multi-channel intake (Telegram, web chat, email), and real-time analytics dashboards.
View Details
A toolkit of battle-tested WooCommerce plugins and hooks: FTP product sync, automated competitive pricing, WebP/JPG image conversion, scheduled WP-Cron backups, and custom storefront extensions deployed on high-traffic production stores.
View DetailsTechnical articles on AI engineering, cybersecurity, automation, and modern full-stack development
A practical guide to deploying Ollama with LLaMA 3.2 for production workloads — GPU vs CPU inference, prompt engineering, context window management, and integrating local AI into n8n automation pipelines without a single API call to the cloud.
Read More
From fresh Ubuntu install to locked-down production server — SSH key-only auth, fail2ban tuning, UFW firewall rules, CrowdSec integration, rootkit detection with rkhunter, and real attack patterns I've seen hitting my own servers.
Read More
Beyond simple webhooks — how I architect multi-branch n8n workflows with error handling, retry logic, database state machines, and the Portal Tools dashboard pattern for managing 20+ automations without losing your mind.
Read MoreThe exact tech stack, folder structure, auth strategy (JWT + refresh tokens), Docker deployment setup, and the 10 architectural decisions I made building ClubPay Pro — and what I'd do differently next time.
Read MoreQuery optimization secrets, custom indexing strategies, object caching with Redis, avoiding variation explosions, and why the Skroutz feed plugin had to be rewritten 5 times to handle real-world catalog complexity.
Read MoreAn honest comparison after building production systems in both — FastAPI vs Express.js vs Hono, type safety tradeoffs, ecosystem maturity, deployment complexity, and when I reach for each language in new projects.
Read MoreNew articles drop regularly. Subscribe for deep dives on LLM engineering, n8n automation patterns, Linux hardening, and real-world software architecture decisions.
Have a project, a problem to solve, or just want to discuss technology? My inbox is always open.
vtsorakidis@gmail.com
Phone
+30 693 653 5369
Location
Thessaloniki, Greece
Availability
Open for freelance & consulting projects
