AS Antonis Sigalas Let's talk

Available for opportunities

Cybersecurity & AI Developer

Antonis
Sigalas

I build secure, thoughtful software — blending Python, full-stack web, and a hacker's curiosity for how systems break and how to defend them.

Athens, Greece CTF Enthusiast

View my work GitHub

antonis@portfolio: ~

$ whoami
antonis_sigalas
$ cat profile.json
{
  "role": "Cybersecurity & AI Developer",
  "location": "Athens, Greece",
  "focus": ["python", "ctf", "web"],
  "status": "open to work"
}
$

01 — About

A developer who thinks like an attacker and builds like an engineer.

I'm Antonis — a developer from Athens, Greece, focused on cybersecurity and applied AI. I spend my time writing Python, tackling Capture-the-Flag challenges, and shipping full-stack web apps that solve real problems.

I care about clean code, understanding systems deeply, and building software that is genuinely useful and secure — with a long-term focus on a career at the intersection of security and AI.

14+Public projects
6Certifications
PythonPrimary language

02 — Certifications

Verified credentials

Issued by Anthropic · June 2026

AI✓ Verified

AI Fluency: Framework & Foundations

Anthropic

ID · xb8ds8dvyukd

101✓ Verified

Claude 101

Anthropic

ID · x2t7j7mapqwg

</>✓ Verified

Claude Code 101

Anthropic

ID · pymkdzwkzer3

◆✓ Verified

Claude Platform 101

Anthropic

ID · wcp54fiac9o6

◎✓ Verified

Introduction to Claude Cowork

Anthropic

ID · 3t2hgxb9zg76

▶✓ Verified

Claude Code in Action

Anthropic

ID · 7t5ydazuo543

03 — Selected Work

Recent projects

More on github.com/antwnakys

Featured project

paper-trader

A full-stack paper-trading platform — Google authentication, custom balances, and live US stock trading. A production-grade application end to end.

TypeScriptNext.jsPrismaNextAuthTailwind

View repository ↗

safevolts

A professional electrical-services website with a clean, responsive layout.

focusflow

A focus timer app that structures study and work into deep sessions.

class-schedule-organizer

A schedule-management tool for organizing classes and time efficiently.

gpa-calculator

A clean utility for computing and tracking GPA over time.

budgetapp

A budget-tracking application for managing personal finances.

See all repositories

Browse the full collection of projects on GitHub.

04 — Contact

Let's build something
secure together.

Open to opportunities, collaboration, and a good conversation about security or AI.

antonsig08@gmail.com