Daniel James Bertrand

Built and operated large-scale UNIX/Linux production environments for business-critical workloads, including Apache and enterprise Linux deployments. Installed, repaired, and maintained production mail stacks (Postfix/Dovecot), UFW firewall configurations, and Apache services—restoring reliability under pressure and hardening configurations against recurring failure modes. Engineered custom DNS/TLD and reverse-proxy/hosting systems for ISP and enterprise customers when standard solutions were insufficient. Developed bespoke production technology on demand (scripts, services, infrastructure components) to meet urgent operational needs. Implemented AWS networking, IAM, and WAF controls aligned to security and compliance requirements, resolving complex incidents across networking, mail, DNS, firewall rules, and application layers. Delivered enterprise reliability and production support in high-accountability environments.

Built and operated large-scale UNIX/Linux production environments for business-critical workloads. Installed, repaired, and maintained production services including Apache and enterprise Linux deployments; restored mail services and hardened configurations against recurring failure modes. Engineered custom DNS/TLD, reverse-proxy, and internet-facing hosting systems when standard tooling was insufficient, and deployed bespoke production tooling on demand. Implemented AWS networking, IAM, and WAF controls to align infrastructure with security and compliance needs. Resolved complex incidents spanning networking, mail, DNS, firewall rules, and application layers, delivering reliability and production support in high-accountability environments.

Built and operated large-scale UNIX/Linux production environments for business-critical workloads, including Apache, Sun Netra, and enterprise Linux deployments. Installed, repaired, and maintained production mail (Postfix/Dovecot), UFW firewall, and Apache stacks—restoring services under pressure and hardening configurations against recurring failure modes. Engineered custom DNS/TLD and reverse-proxy/Internet-facing hosting systems for ISP and enterprise customers when standard tooling was insufficient. Designed and deployed bespoke production technology on demand (scripts, services, and infrastructure components) to meet immediate operational requirements. Implemented AWS cloud networking, IAM, and WAF controls aligned with security and compliance needs, and resolved complex incidents spanning networking, mail, DNS, firewall rules, and application layers while improving overall reliability and production support outcomes.