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Oswaldo HidalgoOH

Average response time: 1 hour

About Oswaldo

I help organizations strengthen their network security by optimizing firewall environments, improving security architectures, and reducing operational risk across on-prem and hybrid cloud infrastructures.

With more than 15 years of experience in enterprise and service provider environments, I specialize in Palo Alto and Check Point technologies, network security architecture, firewall policy optimization, and security automation using Python.

I support projects such as:

Firewall rule analysis and optimization
Network security architecture reviews
Palo Alto Panorama and Check Point management
Traffic flow analysis and security reporting
Security baselines for datacenters and hybrid cloud environments
Migration and integration projects
Network security automation and reporting tools

I have experience working in complex enterprise environments, including banking and critical infrastructures, where security, compliance, scalability, and operational continuity are essential.

My focus is to deliver practical, scalable, and secure solutions that improve visibility, reduce complexity, and support long-term security strategies.

Available for remote and on-site engagements.
  • English

    Fluent

  • Italian

    Fluent

  • Spanish

    Native or bilingual

  • Dutch

    Basic

Can work on-site
Amsterdam (up to 50km)

Experience

  • ING
    Network Security Designer
    BANKING AND INSURANCE
    April 2024 - Today (2 years and 2 months)
    Amsterdam, Netherlands
    Design and implement network and firewall changes supporting large‑scale datacenter and IPC migrations.
    Develop runbooks and technical documentation aligned with internal engineering standards.
    Engineer and validate changes on F5 BIG‑IP (LTM/GTM), Secure Web Gateway platforms, and firewalls.
    Develop Python automation scripts to manage Palo Alto Panorama device groups and security policies.
    Create monitoring and validation scripts to improve configuration accuracy and operational reliability.
    Monitored and troubleshooted network access issues using ISE dashboards and logs.
    F5 Cisco Palo Alto Firewalls Check Point Firewalls Python
  • Liberty Global – Netherlands
    Senior Security Network Engineer (Telemetry)
    TECH
    March 2018 - March 2024 (6 years)
    Amsterdam, Netherlands
    Designed and implemented Zero Trust security architecture including IPS/IDS and Threat Prevention
    platforms.
    Managed major incidents involving Check Point security gateways ensuring availability and data
    protection.
    Managed Cisco ISE (Identity Services Engine) for network access control (NAC) and 802.1X authentication.
    Implemented policies for device and user authentication across wired and wireless networks.
    Administered Cisco ACI infrastructure at an operational level, including management of Application
    Profiles, Endpoint Groups (EPGs), Port Groups, and policy/profile configurations to support application
    connectivity and network segmentation.
    Monitored and troubleshooted network access issues using ISE dashboards and logs.
    Administered FortiGate firewalls.
    Automated firewall policy migrations and system upgrades using Python scripts.
    Integrated telemetry and security monitoring solutions including Extrahop deployed in AWS.
    Acted as technical bridge between service owners, security teams and network operations.
    Cisco Check Point Firewalls Network Security Architecture Firewall Optimization & Rule Analysis Python
  • AT&T
    Senior Security Network Engineer
    TECH
    April 2016 - February 2018 (1 year and 10 months)
    Turin, Italy
    Senior Security Network Engineer | Apr 2016 – Feb 2018
    Designed and implemented enterprise firewall solutions using Check Point and Cisco ASA.
    Implemented advanced Palo Alto protections including DoS mitigation, zone policies and geolocation
    filtering.
    Supported multi‑vendor environments including Juniper, Fortinet, F5, Pulse Secure and Infoblox.
    Administered Juniper firewalls (SRX) at an operational level, including security policy changes, VPN
    support, routing updates, and centralized management through Juniper Security Director
    Managed DDoS mitigation and CDN protection using IP Guardian solutions.
    Check Point Firewalls Cisco F5 Juniper Fortinet

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Education

  • Computer Science
    TECSUP
    2000
    Education in Computer Science with a strong foundation in computer systems, networking, and IT infrastructure.

Certifications

  • CCSE R82
    Checkpoint
    2025
    Application Contr Smartview Event IT-Security IDS Clustering IPS URL Filtering Identity Awareness MDS Sandblast

Skill set

Categories