Senior Cybersecurity Engineer, Advanced Security

Presidio

9h•Remote

About The Position

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. 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.

Requirements

Bachelor’s degree in Cybersecurity, Computer Science, or related field, or equivalent work experience and/or military experience
5–8 years’ experience in progressively senior cybersecurity roles, with demonstrable expertise in Application security and Zero Trust transformation projects
5-8 years’ experience in senior customer-facing technical roles (Solutions Architect, Senior Engineer, Technical Consultant)
3 years demonstrated threat intelligence and incident response experience
Demonstrated success delivering enterprise-scale security, networking, or cloud security solutions
Experience supporting Fortune 500 or large enterprise customers strongly preferred
Minimum 2 years hands-on experience with at least two of the following: Cloudflare and Zscaler
Technical expertise in SASE, SSE, ZTNA, SWG, CASB, DLP, SD-WAN, and Email Security
Proven track record delivering complex, multi-platform security projects in enterprise environments
Strong communication skills, capable of engaging technical and executive stakeholders alike
Multi-platform administration and optimization
Hands on experience with one or more of the following: TCP/IP, OSI layers 1–7, BGP, DNS, CDN, anycast, and edge architectures, WAF, DDoS mitigation, API security, Zero Trust and identity-centric security
Python, PowerShell, Terraform, JavaScript, and CI/CD Pipelines
Zero-Trust solution, CDN, and WAF deployment at scale
Strong troubleshooting and root cause analysis skills in complex environments
Ability to translate security strategy into actionable technical designs

Nice To Haves

Vendor certifications such as Operate Cloudflare DNS, Cloudflare Zero Trust 301, Cloudflare Zero Trust 401, ZDTA, ZDTE, ZDXA
Experience with hybrid/multi-cloud deployments (AWS, Azure, GCP)
Familiarity with emerging threats and adversary tradecraft
Advanced certifications highly valued

Responsibilities

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/TypeScript for edge logic, security controls, and performance optimization.
Integrate Cloudflare services with SIEM, SOAR, IAM, and security operations platforms.
Collaborate with Cyber Engineering team members globally to ensure service consistency, share best practices, and deliver with excellence across regions.
Act as a multi-platform subject matter expert, advising clients on architecture, platform optimization, and operational best practices.
Troubleshoot and resolve complex issues during deployment and post-implementation across all supported platforms.
Create high-quality technical documentation, including solution designs, runbooks, and as-built records.
Mentor junior engineers to elevate team-wide technical capability.