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Open to opportunities
Ioannis Krokos
Full-Stack Product Engineer
I build and operate production software — from a hospitality SaaS running in 9 hotels to 500+ client websites — backed by 12+ years of experience.
Working with React, Next.js, TypeScript, and Node.js — backed by PostgreSQL, Supabase, and MongoDB in production.
Mykonos, Greece 🇬🇷UTC+2
9
hotels running GuestSync
500+
client websites delivered
12+
years of experience
01 — About
About Me
I'm Ioannis Krokos, a full-stack product engineer. I design, build, and operate GuestSync, a multi-tenant hospitality SaaS running daily guest operations across 9 hotels in Mykonos — owned end-to-end, from architecture to client onboarding and support. Since 2015 at Webee Web Agency, I've also delivered 500+ responsive websites and modern applications, translating complex business requirements into robust technical solutions with React, Next.js, and TypeScript.
Location
Mykonos, Greece 🇬🇷 · EU citizen · Open to relocation
Languages
Greek (native) · English (fluent) · German (actively learning)
Community
Cross-Industry Experience
Built solutions across hospitality, real estate, and e-commerce sectors, developing booking systems, payment integrations, and complex web applications.
Modern Tech Stack
Next.js, React, TypeScript, and Node.js, with PostgreSQL, Supabase, and MongoDB in production — supported by AI-assisted development workflows.
Team Collaboration
Proven track record of working with cross-functional teams, delivering scalable solutions from design to deployment while optimizing development workflows.
02 — Stack
Skills & Tech Stack
Specialized in modern web technologies for building efficient, scalable, and user-focused applications.
Frontend Development
React, Next.js, TypeScript, Tailwind CSS
Modern user interfaces
Backend Development
Express.js, Node.js
Robust server-side architecture
Database Management
PostgreSQL, Supabase, MongoDB
Efficient data storage & retrieval
Proficiencies Overview
Frontend
React, Next.js, TypeScript, Tailwind CSS
Backend
Node.js, Express
Database
PostgreSQL, Supabase, MongoDB
Deployment & Cloud
Vercel, Railway, Cloudflare Workers, AWS
AI Tooling
Anthropic Claude, Cursor, Workers AI
TypeScript-first. React and Next.js in production, shipped weekly.
03 — Experience
Experience & Resume
12+ years of building digital solutions, collaborating with teams, and delivering results.
2015 — Present
Co-Founder & Lead Developer · Webee
Co-founded and lead development at Webee, a web agency serving the Mykonos hospitality sector — 500+ production websites, booking systems, and payment integrations built with Next.js, React, and PostgreSQL. Key project: GuestSync — a multi-tenant hospitality SaaS I designed and built solo (Next.js, Node.js, PostgreSQL), in production across 9 hotels, owned end-to-end from schema and API to deployments and monitoring.
2013 — 2015
Frontend Web Developer · P.aR Publishing
Developed responsive interfaces for 10+ client projects using HTML, CSS, and JavaScript. Contributed to CMS solutions and agile workflows.
2016 — 2019
Bachelor's Degree, Computing · University of East London
Focused on software development, gaining foundational knowledge in programming, databases, and IT systems.
04 — Contact
Looking for a Full-Stack Product Engineer for your team?
I'm open to full-time roles and freelance projects. Let's talk about how I can help your team ship great products.