Senior Cybersecurity Engineer, Advanced Security

Presidio, Where Teamwork and Innovation Shape the Future
At Presidio, we're at the forefront of a global technology revolution, transforming industries through cutting-edge digital solutions and next-generation AI. We empower businesses - and their internal customers - to achieve more through innovation, automation, and intelligent insights.

The Role 
Join Presidio’s Cybersecurity Advanced Security team as a Senior Cybersecurity Engineer. This role is a customer-facing technical authority within the Cybersecurity Advanced Security Services organization. This role is responsible for architecting, deploying, and optimizing solutions that provide edge security, Zero Trust, Network Threat Analytics, and enhanced performance while also supporting broader Secure Service Edge (SSE) and Secure Access Service Edge (SASE) delivery engagements across the organization.

This position sits at the intersection of Edge Security, Network Security, Zero Trust, cloud networking, and enterprise security architecture. The Engineer serves as a trusted technical advisor to enterprise customers, guiding architectural decisions that span web application security, API protection, Zero Trust access, secure web gateway capabilities, and cloud-delivered security services.

The ideal candidate can contribute to multi-vendor SSE/SASE architectures, partnering with advisory, network, and security operations teams to deliver cohesive, cloud-native security outcomes.

This role provides the chance to work with top platforms like Cloudflare and other NTA, NDR, and Zero Trust solutions. Mentor new talent and team up with global experts to shape the future of threat detection and response.

Travel Requirements:

This is a remotely based role within the Continental US with 10% associated travel as required.

Responsibilities Include:

• Lead high-profile delivery engagements across solutions such as Cloudflare with the opportunity to develop resilient architecture and guide clients through operational handoff.
• Serve as a senior technical escalation point for complex security, performance, and availability challenges.
• Lead enterprise migrations to Cloudflare and SSE/SASE platforms, including DNS cutovers and Zero Trust onboarding.
• Define phased migration strategies with rollback planning and risk mitigation.
• Produce and maintain reference architectures, technical documentation, and delivery artifacts.
• Lead the design, deployment, and optimization of Cloudflare-based security and performance solutions across enterprise environments.
  • Execute complex security engagements, including:
  • Web Application Firewall (WAF) and API security (API Shield, schema validation, JWT, mTLS)
  • Layer 3/4 and Layer 7 DDoS mitigation
  • Zero Trust Network Access (Access, Gateway, WARP, Tunnels)
  • Secure Web Gateway (SWG) and DNS-layer security
  • Global Load Balancing, Argo Smart Routing, and traffic steering
• Support the delivery of SSE and SASE architectures in collaboration with Advanced Security, Network, and Cyber Advisory teams.
  • Apply working knowledge of SSE components, including:
  • Secure Web Gateway (SWG)
  • Cloud Access Security Broker (CASB) concepts
  • Zero Trust Network Access (ZTNA)
  • Data protection and inspection in transit
• Contribute to SASE architectures that integrate:
• Cloud-delivered security services
• Identity-first access models
• SD-WAN and branch connectivity (where applicable)
• Architect solutions leveraging global anycast networks, CDN caching hierarchies, and distributed edge compute.
• Apply deep expertise in:
• TCP/IP and OSI layers 1–7
• BGP, global routing, and traffic engineering
• DNS, DNSSEC, and edge-based traffic control
• HTTP/2, HTTP/3, QUIC, and TLS 1.2/1.3
• Design hybrid and multi-cloud origin architectures optimized for security, performance, and resiliency.
• Design and deploy solutions across AWS, Azure, and GCP environments.
• Automate security and network configurations using Terraform, APIs, and CI/CD pipelines.
• Develop Cloudflare Workers using JavaScript/TypeS