Андрей Онопа

Hi! I’m a Software Engineer, Cybersecurity Specialist, and Systems Administrator. My core advantage is the intersection of development, offensive security, and infrastructure management. I don't just write code; I architect secure systems, automate complex workflows, and build resilient, hardened networks. Whether you need a robust backend, advanced web automation, or a comprehensive security audit, I deliver end-to-end solutions.

What I have built & What I can do for you:

Cybersecurity & Offensive Security:As an active CTF player (TryHackMe, HackTheBox) and vulnerability researcher, I have deep expertise in penetration testing. I’ve developed custom OSINT tools and proprietary C2 (Command & Control) frameworks for Red Teaming operations. Proficient in Burp Suite, Metasploit, and secure code auditing.

Full-Stack & Secure Development:• Developed a complete SaaS platform "Stogram GPT" (Django backend + Next.js frontend) for comprehensive Telegram account management.• Currently architecting a custom end-to-end encrypted messenger (Rust backend + React Native frontend), heavily utilizing applied cryptography (Signal Protocol concepts).• Building scalable backends using Python and Rust.

Automation & Bot Architecture:• Built robust, anti-detect automation systems and web scrapers utilizing both Selenium and Playwright.• Developed custom browser extensions tailored to specific client needs.• Deep expertise in Telegram bot architecture—from simple utilities to complex, high-load systems.

System Administration, Identity & Networking:• Networking: Cisco certified. I design and secure networks, with hands-on expertise in configuring switches, implementing robust Port Security mechanisms, and deploying strict MAC address filtering.• Windows & Active Directory: Proficient in basic Windows administration and Active Directory configuration. I handle identity management and deep system troubleshooting (down to precise boot configuration data management and repairs).• Linux & DevOps: Seamlessly handle VPS provisioning, Docker containerization, deployment pipelines, and task scheduling (cron jobs) to ensure 24/7 uptime.

Tech Stack:• Languages: Python, Rust, JavaScript, TypeScript• Frameworks & Tools: Django, Next.js, React Native, Playwright, Selenium• Security & Networking: Penetration Testing, Cisco, Port Security, Active Directory, Burp Suite, Metasploit• Infrastructure: Docker, Linux Administration, Windows Server, VPS

Looking for an engineer who understands the full stack—from the network hardware layer to the application backend—and thinks like a hacker to secure it? Let's discuss your project!