Hi, I'm Leonard Haddad

Software Engineer & CEO at IsraTech

"A whole IT department - in one person."

Experience & Education

01/2022 - Present
IsraTech Logo

Chief Executive Officer (CEO)

IsraTech
Leadership Consulting Full-Stack Development
04/2023 - Present
Horváth Logo

Senior Software Engineer | Consultant

Horváth.AI
Python TypeScript ReactJS Docker
05/2025 - 04/2026
Blackfield Logo

Lead AI & Software Engineer

BLACKFIELD AI AG
Python TypeScript ReactJS RabbitMQ Docker
10/2024 - 04/2025
DLR Logo

Full-Stack Software Engineer

German Aerospace Center (DLR)
Python TypeScript ReactJS RabbitMQ Docker
01/2022 - 09/2024
adesso Logo

Full-Stack Software Engineer | FirstSpirit® Developer

adesso SE AG
Java (EE) Python Spring Boot ReactJS Angular FirstSpirit

Core Arsenal

Java (SE/EE) Python C# Go JavaScript, TypeScript Docker SQL Spring Boot FastAPI Bash AWS Azure Jenkins OpenAI Claude Kubernetes

The Arsenal

Modules, AI and API Wrappers
Python Mini-Tools & Scripts
Thread-Safe Queue Priority-based queue for multithreaded apps. Git SSH Config Gen Automated multi-account SSH config generator. Israel Red-Alert Notifier Real-time alerts via API for safety monitoring. UniMensa Food Notifier Daily menu crawler for university dining halls. Earthquake Monitor Visual monitoring for regional seismic activity. Trash Calendar Renderer Custom PDF/Image renderer for waste collection. Trash Schedule Notifier Push notifications for bin collection days. iCal Event Generator Programmatic .ics file creation for calendars. Canary Tracking Pixel Security tool for alert triggering via pixel loads. StudIP REST API API wrapper for university course management. StreamTogether Sync video playback across multiple clients. Mini HTTP Server Lightweight file sharing server for local networks. Duplicate File Deleter Hash-based identification of redundant files. KeepBusy Mouse Mover Prevents system sleep by simulating movement. Investment Yield Calc Calculate compound interest and asset growth. Bank-Balance Calc Aggregates accounts for total net worth overview. AES Password Vault Secure encrypted storage for sensitive credentials. LAN Password Transfer Simple P2P utility for local credential sharing. Mass Git Diff Batch analysis of changes across multiple repos. Ethermine Ticker Real-time ETH mining stats for the desktop. Monoalphabetic Decypherer Frequency analysis based cipher cracker. Python Reverse Shell Educational script for remote command execution. Tkinter Markdown Editor GUI-based editor with live preview support. YouTube MP3 Downloader Converts and downloads audio from URLs. RevShell Generator Web/CLI tool to generate pentesting payloads. Chat Spammer GUI utility for high-frequency messaging.
Terminal, OS & Sysadmin
Other Stuff & Fun

Publications

Apps & Merch

Google Play Apps

Note: Google has taken my old developer account offline for being "inactive". Self-hosted alternatives are in the works!

  • Sharky: A family-friendly angry sharkfish game.
  • SemesterPlaner: Automated schedule creator.
  • Password Generator: 100% offline, secure generator.

Support my work!

Check out the various cool merch on my Teespring store, or buy me a coffee.