Jeff Jijy

Digital Forensics & Incident Response Analyst and Systems Administrator with hands-on experience conducting forensic investigations, administering production infrastructure, and securing enterprise networks. Skilled in Proxmox VE, Windows/Linux server administration, SonicWall firewalls, Docker, and digital forensic analysis. Experienced in independently managing virtualized environments, troubleshooting production systems, and supporting cybersecurity operations.

Digital Forensics & Incident Response Analyst | Systems Administrator at Cyber Diligence | Gardiyan System Security (2025-07 – Present)

• Conducted comprehensive digital forensic investigations, examining digital evidence for clients across legal, corporate, and law enforcement sectors using Magnet Axiom, Cellebrite, Intella, Forensic Explorer, FTK Imager/Lite, X-Ways, and Exiftool.
• Performed Technical Surveillance Countermeasures (TSCM) inspections to identify potential unauthorized surveillance devices across corporate, government, financial, and residential environments.
• Conducted network vulnerability assessments and network discovery using Nessus, Fing, and Zenmap to identify potential security risks.
• Served as the primary infrastructure administrator, independently deploying and managing 11 Proxmox VE virtual machines and maintaining production Windows/Linux server environments.
• Administered SonicWall firewall infrastructure, configuring NAT policies, VLANS and DMZ security zones, and access control rules to support production services.
• Deployed and maintained Docker-based production applications, troubleshooting container networking, storage, backend connectivity, and service availability.
• Configured and maintained services infrastructure services such as SSH, SFTP, reverse proxies supporting secure remote access and application delivery.
• Diagnosed production network connectivity issues using Wireshark, Tcpdump, and Linux networking utilities, investigating TCP communication failures, firewall restrictions, and application service interruptions.
• Monitoring client endpoints using Gardiyan System Security and prepared monthly security assessment reports that document findings and recommendations.

Intern Software Developer at Managed Org (2024-04 – 2024-10)

• Experience using Amazon Web Services and automating procedures with Terraform and GitHub.
• Managed projects using JavaScript and Python to support Managed Org initiatives and fundraisers.

Intern at IT Department at NYC Health + Hospitals/South Brooklyn Health (2023-01 – 2023-05)

• Assisted with the resolution of system/network issues, which were critical to hospital operations.
• Conducted computer re-imaging procedures to rectify defects, ensuring seamless continuity in healthcare services.
• Assisted in the deployment of new Cisco phones, Zebra printers, and desktops to the Ruther Bader Ginsburg Building.
• Executed configurations for Cisco 9400 switches and implemented network toning strategies to address Ethernet port issues.

IT Support Associate at Farmers Insurance (2022-06 – 2023-08)

• Diagnosed and resolved computer and printer anomalies through systematic troubleshooting and technical expertise.

Master of Science in Digital Forensics (Ongoing) – Champlain College (2027)

Bachelor of Technology in Cybersecurity; Minor in Network Administration – SUNY Alfred State College of Technology (2023)