Adriene Castro

Collaborated with clients to deploy and troubleshoot access control systems, ensuring seamless integration with existing networks. Led MSSQL database configuration, migration, and upgrades to support hardware synchronization. Designed a secure, cloud-based solution using AWS EC2 and ZeroTier VPN for remote access over cellular networks. Integrated AWS services to enhance scalability and reliability. Created technical documentation on networking, databases, and security for internal knowledge sharing.

Provided technical support for radiology software on RHEL/Rocky Linux servers. Monitored server health, including disk usage, network latency, and database load. Managed and optimized PostgreSQL/SQL databases, addressing replication issues and perfor-mance tuning.

Managed and maintained complex network infrastructures tailored to client needs. Administered load balancers including Brocade ADX, NetScaler, and F5 BIG-IP with AFM and virtual server/pool setups. Administered firewalls such as Cisco ASA/FTD, Palo Alto NGFWs, and Imperva WAFs. Configured S2S and client VPNs with AnyConnect and GlobalProtect, integrating DUO MFA. Managed SSL certs and available cipher suites. Troubleshot issues using packet captures, IDS, VPN diagnostics, and firewall policies.

Delivered Tier 1–2 support to local and remote healthcare staff, ensuring rapid issue resolution in a HIPAA-compliant environment. Maintained Windows/Linux systems and peripherals per security standards. Automated ticketing and asset audits with Python scripts, boosting efficiency. Managed full asset lifecycle, supporting on-site and remote teams. Aided infrastructure upgrades, including VLAN setup and building a Raspberry Pi-based media network for internal communication.