EXPLORE

C Programming Java Mobile App Testing Python Software Architecture
Profile cover photo
User Avatar

Syed Ali Mehdi J.

@Jafferi12

monthly-level-three.svg
5.0
3

2.5

2.5

100%

✅Systems Architect✅Security ✅AI/LLM ✅ Full-Stack

$40 USD / Hour

Flag of

Pakistan (4:34 PM)

Joined on January 4, 2026

2 Recommendations

$40 USD / Hour

For the past years, I have operated at the intersection of deep-systems security, advanced software architecture, and artificial intelligence. I don't just write code; I architect robust ecosystems. From reverse-engineering malware at the assembly level to deploying localized Large Language Models (LLMs) and engineering fully automated web applications, I build systems that are secure by design, intelligent by nature, and infinitely scalable. My foundation as a Principal Security Engineer dictates how I build. Because I know exactly how to tear down cloud environments, bypass EDRs, and exploit web vulnerabilities (XSS, SQLi), I know precisely how to defend against them. I don't just point out flaws; I deploy the firewalls, configure the Linux/Windows servers, and harden the bare-metal infrastructure. Beyond defense, I am a creator. As a Full-Stack Developer and AI Engineer, I design complex applications (Python, Rust, Java, JavaScript) and integrate them with custom, locally hosted LLMs to ensure absolute data privacy. I connect these systems using advanced automation frameworks (n8n, Twilio , Vapi), building the neural pathways of modern, hyper-efficient businesses. Whether you need a network secured, a web app built, or an AI workflow automated, I deliver engineering at the highest level. Core Expertise ✅ Offensive & Defensive Security: Advanced Penetration Testing, Reverse Engineering (Assembly, C/C++), Digital Forensics, and Web/Cloud Security. ✅ AI & Large Language Models (LLMs): Local LLM deployment, secure AI integration, Machine Learning models, and privacy-first AI architecture. ✅ Full-Stack Software Architecture: End-to-end application development in Python, Java, JavaScript, Rust, and C. ✅ Advanced Automation & Orchestration: Building complex, multi-platform workflows using n8n, Twilio, and custom API integrations. ✅ Infrastructure & System Administration: Enterprise server configuration (Linux/Ubuntu, Windows Server), Virtual Machines, and Active Directory domination. ✅ Network Defense & Hardening: Deploying Next-Gen Firewalls, securing network perimeters, and architecting zero-trust environments. ✅ Scripting & Rapid Prototyping: Automating deployments and system tasks using Shell Scripting and PowerShell. ✅ Database Architecture: Secure SQL database design, optimization, and administration.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Portfolio

Portfolio

13816482
13816471
13816482
13816471
5.0 · 3 Reviews
Reviews
User Avatar

Mobile App Testing (QR Features) $50 AUD

Very attentive and focused, great to work with.

Daniel W.

@daniswas

Flag of

Bondi Junction, Australia

19 days ago

Share

B

FJD Trion P2 Firmware Upgrade Troubleshooting & Vendor Escalation Support (UK / Region-lock + Device Disabled) £80 GBP

Very pleased. Clearly very experienced and had the expertise necessary to complete a specialist project.

Ben M.

@benmiddle123

Flag of

Oldham, United Kingdom

2 months ago

Share

User Avatar

Build a Windows EXE to Copy Subtitle Timestamps from One File to Another $40 USD

Excellent work from Syed Ali Mehdi J.. Delivered exactly as promised. Very clear communication, quick updates, and the final tool worked perfectly with accurate results. Professional, reliable, and easy to work with. Would definitely hire again.

Content Factory I.

@avatarr14

Flag of

chennai, India

3 months ago

Share

Experience

Research Assistant

Jan, 2025 - Present

1 year, 2 months

IOMID (International Organization for Multidisciplinary Innovation and Development)

Jan, 2025 - Present

1 year, 2 months

Working with a professor on practical security research focused on malware analysis and penetration testing. I analyze suspicious samples, study behavior and indicators, and document findings in clear reports. I also support lab testing with basic reverse engineering and security tooling when needed.

Flag of

Vechta, Germany

Jan, 2025 - Present

1 year, 2 months

Penetration Testing Intern

Jun, 2025 - Sep, 2025

3 months

ISO Arabia

Jun, 2025 - Sep, 2025

3 months

Reconnaissance & scanning (Nmap, Nessus, Burp Suite, Amass, Shodan, Nikto); vulnerability assessment (scanner operation, manual validation, CVE review, PoC testing); exploitation practice (privilege escalation, lateral movement, password cracking in simulated environments); application/web/API/mobile testing support; reporting (findings with screenshots and reproduction steps); research & tooling (CVE research, automation scripts in Python, Bash, PowerShell); participated in shadowing events.

Flag of

Dubai, United Arab Emirates

Jun, 2025 - Sep, 2025

3 months

Education

National University of Science and Technology

2023 - 2026

3 years

Bachelor of Computer Engineering

Flag of

Pakistan

2023 - 2026

3 years

Qualifications

Python and Ethical Hacking

2025

Udemy

I took this because I didn't want to just rely on other people's tools. It taught me how to write my own Python scripts for network scanning, packet sniffing, and even creating backdoors. It’s been super useful for when I need to build a custom tool for a specific problem.

2025

Advance Web Attacks and Exploitation

2025

Offsec

I took this to bridge the gap between developing and breaking. It focuses on advanced web exploitation, specifically finding deep vulnerabilities that automated scanners miss. It gave me heavy practice in chaining small issues together to fully compromise a web app, and I got really comfortable automating those attacks with custom scripts.

2025

Practical OSINT Research Professional

2025

TCM security

I took this to get better at digital investigations. It basically taught me how to find almost anything that's publicly available on the web, even if it's well-hidden. I learned a lot about tracking digital footprints, verifying information, and using advanced search techniques to gather intel on specific targets.

2025

Registered Users

Total Jobs Posted

Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)

Copyright © 2026 Freelancer Technology Pty Limited (ACN 142 189 759)