JA Jobyer Ahmed
Jobyer Ahmed

Jobyer Ahmed

Security Professional & Entrepreneur

Founder of Bytium, OSCE3-certified cybersecurity expert with deep experience in pentesting and vulnerability assessment.

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Services

Application Penetration Testing
Manual web, mobile, and API pentests to uncover authentication, logic, and injection flaws. OWASP Top 10 coverage with prioritized fixes.
Network Penetration Testing
External & internal network pentesting to find misconfigurations, exposed services, and lateral-movement paths (incl. AD/VPN).
Vulnerability Assessment
Continuous vulnerability scanning & validation across apps and infrastructure. Findings triaged with CVSS severity and remediation guidance.
Cloud Security Audit
AWS / Azure / GCP configuration review: IAM, networking, storage, encryption, logging. CIS Benchmarks & best-practice hardening.
Red Teaming
Adversary emulation using MITRE ATT&CK TTPs—from phishing and initial access to objectives— with replayable evidence and blue-team drills.
Incident Response & Hardening
Rapid breach triage, forensics, containment, and recovery. Playbooks and hardening for EDR, logging, IAM, and backups to reduce dwell time.
Security audits, pentesting, and strategic consulting — slots open. Book a call

Pricing

App Pentest
Web/app/API testing, OWASP Top 10, report + retest.
from $2,500
Network Pentest
External/Internal, AD paths, remediation guidance.
from $1,800
Simple vulnerability scan
Web/app/API testing, OWASP Top 10, report + retest.
from $600

Testimonials

“Pinpointed critical flaws and provided clear remediation steps.”

— CTO, SaaS startup

“Professional, thorough, and business-focused.”

— Head of Engineering, Fintech

“As always, fast and professional delivery. Highly recommended.”

— CISO, E-commerce

“Is eager to work and is delivering a good result.”

— CTO, Retail