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APPLICATION SECURITY ENGINEER

Kourosh
Rajabzadeh Dizaji

Software development and security professional with 9 years of experience, focused on secure development and code review. I work across web, mobile, and console applications, with experience in source code analysis, application security, and AI-assisted development and testing.

Contact me Download resume

01 / BACKGROUND

Experience

Security engineering informed by hands-on software development.

Apr 2017 — May 2026Tehran, Iran

Software Security & Code Review

Saba System Sadra

Application and network security work, supported by hands-on software development and code review experience.

Apr 2022 — Jun 2024Remote · Germany

Software Security & Code Review

Fakir Technology Consultants GmbH

Worked remotely on software security assessments, applying an implementation-focused perspective to application security.

2021 — PresentIndependent

CTF Organizer & Player

Pr1m3d CTF

Organize and take part in CTF competitions, with a focus on cryptography, web security, and coding challenges.

02 / SELECTED WORK

Projects

Products and hands-on tools across software development and security.

01

Cafekesh

A platform for managing café customers.

Software product 02

Windows DLL Injector

C++ implementations of DLL injection techniques for x86 and x64 Windows processes.

C++ · Windows internals 03

Escalatable

A vulnerable Linux machine designed for hands-on privilege escalation practice.

Linux · security education

03 / CAPABILITIES

Skills & focus

Software development

Python, C, Java, PHP, JavaScript, Flask, Django, Docker

Application security

Web, Android, iOS, and desktop applications; source code analysis

AI engineering

Agentic AI, LLM setup, and autonomous workflows

Cloud

AWS and Google Cloud Platform

CTF

Cryptography, web, and coding challenges

Language

English · Academic IELTS 7.5

04 / FOUNDATION

Education & credentials

2014 — 2019

B.Sc. Computer Engineering / Information Technology

Amirkabir University of Technology

Thesis: Design and implementation of a tool to test antivirus products.

Certifications

Selected teaching

  • Programming Fundamentals · Teaching Assistant, Amirkabir University (2015–2016)
  • Network Security in Linux · Amirkabir Linux Festival (2017)
  • Linux Privilege Escalation · Amirkabir Linux Festival (2025) ↗

05 / COMMUNITY

Volunteering

Jan 2023 — PresentTehran, Iran

Recreation Activity Coach

APCL

Aug 2017 — Aug 2018Tehran, Iran

Recreation Activity Coach

Toranj NGO Group

LET'S CONNECT

Have a project or role
in mind?

koorosh.rajabzadeh@gmail.com