Jonathan Jesse
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| 📍 Grand Rapids, MI | 🐙 github.com/jjesse | 💼 linkedin.com/in/jjesse | 🐦 @jjesse |
Summary
Technical sales and cybersecurity professional with expertise in cloud security, network security, and enterprise software. Experienced in presales engineering, solution demonstrations, and building automation tools that help customers get the most out of security platforms. Passionate about open-source projects, homelab automation, and staying current with the evolving threat landscape.
Experience
Sales Engineer — Zscaler
Grand Rapids, MI
- Work with enterprise customers to architect, demonstrate, and validate Zscaler cloud security solutions including ZIA, ZPA, and ZDX.
- Build automation scripts and tooling to support proofs of concept and customer demos.
- Correlate Zscaler Cloud Enforcement Range IP addresses to datacenters to assist with traffic troubleshooting (zscaler_datacenters).
- Developed PowerShell scripts for demoing and testing Zscaler capabilities in lab environments (zscaler_demo_scripts).
- Automated Zscaler ZPA app segment and segment group management using Python.
Sales / Systems Engineer — Forescout Technologies
Grand Rapids, MI
- Supported enterprise presales engagements for Forescout’s device visibility and network access control platform.
- Developed a Python integration connecting IGEL thin clients with Forescout (igel).
- Authored Ansible playbooks to automate Forescout deployment and configuration (fs-playbooks).
Skills
Cloud Security: Zscaler (ZIA, ZPA, ZDX), SASE, Zero Trust Architecture
Network Security: Forescout, NAC, IDS/IPS, network traffic analysis
Programming & Scripting: Python, PowerShell, JavaScript, TypeScript, Bash
Infrastructure & Automation: Ansible, Docker, Homelab, Linux (Kali, Kubuntu)
AI & Developer Tools: GitHub Copilot, Generative AI, GitHub Actions
Other: OSINT, threat research, cybersecurity podcasts & community building
Projects
Selected open-source projects — see full portfolio for more.
| Project | Description | Tech |
|---|---|---|
| security_podcasts ⭐ 23 | Curated list of cybersecurity podcasts, community-sourced from r/cybersecurity | Python |
| zscaler_datacenters | Correlates Zscaler Cloud Enforcement Range IPs to datacenters | JavaScript |
| baseball_stats | Live MLB stats dashboard | JavaScript |
| nfl-stats-dashboard | NFL game and player stats tracker | JavaScript |
| homelab_dashboard | Web dashboard for tracking homelab services and devices | Python |
| traffic-generator | Generates realistic network traffic for security testing in homelab | Python / PowerShell |