Tyler Feldstein
Cybersecurity Architect & AI Engineer
CISSP-certified cybersecurity leader with proven expertise in AI-driven security solutions, zero trust architecture, and cloud security across AWS, Azure, and GCP environments.
I architect and implement advanced security frameworks leveraging machine learning for threat detection, automate security operations (SOAR), and design resilient cloud infrastructures that meet stringent compliance requirements including FedRAMP, NIST, and ISO 27001.
Professional Experience
Trusted by Industry Leaders
My Expertise as an AI Engineer & Cybersecurity Architect
As a CISSP-certified Cybersecurity Architect and AI Engineer with over 10 years of experience, I specialize in building secure cloud infrastructure, AI-driven security solutions, and full stack applications that protect critical systems and data. My expertise spans machine learning, zero trust architecture, and automated security operations.
Cloud Security Architecture
Designing zero trust architecture and implementing secure cloud infrastructure on AWS, Azure, and GCP with FedRAMP-accredited solutions and compliance controls.
AI Engineering & Machine Learning
Building AI-driven solutions and agent workflows with machine learning expertise for enhanced threat detection, predictive analytics, and automated decision-making systems.
Full Stack Development
Developing modern web applications using React, Next.js, Node.js and cloud-native architectures with CI/CD pipelines, microservices, and containerization.
Security Automation & DevSecOps
Integrating security throughout CI/CD pipelines with SAST/DAST tools, container security, and automated vulnerability management using Terraform and GitLab/GitHub Actions.
Threat Detection & Incident Response
Building AI-driven threat hunting infrastructure using Splunk, ELK Stack, SentinelOne, and MITRE ATT&CK frameworks for advanced cyber defense.
Enterprise Network Security
Implementing secure network architectures with Cisco Nexus, firewall rules, IDS/IPS, VPN gateways, and Zscaler solutions for comprehensive protection.
Compliance & Risk Management
Ensuring alignment with frameworks including NIST, ISO 27001, SOC 2, PCI-DSS, CCPA, and implementing RMF controls with automated compliance monitoring.
Infrastructure Optimization
Designing and managing high-performance private clouds, virtualization environments with VMware, and enterprise-grade datacenter architecture.
Secure AI Integration & Alignment
Implementing responsible AI principles with secure guardrails, ensuring data privacy, ethical AI deployment, and integration of large language models into enterprise security frameworks.
AI Engineer & Cybersecurity Career Journey
Professional experience in cloud security architecture, AI-driven threat detection, and zero trust implementations across leading enterprises
Senior Cyber Security Engineer
Everbridge
July 2021 - Present
Experience Overview
As Senior Cyber Security Engineer at Everbridge, I spearheaded the design and implementation of advanced Security Operations and Incident Response (SOAR) capabilities. I led the development of AI-powered agents and chatbots for security automation and threat intelligence, significantly enhancing our proactive defense posture. My work involved building robust automated threat detection systems using Terraform, Kubernetes, and CI/CD pipelines across multiple cloud platforms. I successfully integrated security mechanisms across AWS, Azure, and GCP environments, ensuring FedRAMP accreditation compliance. Additionally, I deployed comprehensive enterprise security solutions and led initiatives to meet rigorous compliance standards.
Senior Cyber Security Architect
Warner Bros. Discovery
July 2021 - September 2024
Experience Overview
At Warner Bros. Discovery, I served as the primary security architect for the enterprise, where I designed and implemented robust security frameworks for the organization's digital infrastructure. I specialized in security automation and Infrastructure as Code using Terraform, enabling consistent and scalable security controls. My responsibilities included conducting thorough vulnerability assessments using industry-leading tools like SentinelOne, Brinqa, Nessus, and Splunk. I maintained strict alignment with critical compliance frameworks including NIST, ISO 27001, and SOC 2. Throughout my tenure, I secured complex hybrid cloud environments spanning AWS, Azure, and GCP, while providing executive-level reporting on security posture and risk mitigation strategies.
Senior Cyber Security Architect
CACI
January 2020 - September 2022
Experience Overview
While at CACI, I led secure cloud infrastructure development for CBP's mission support directorate (MSD). I architected and implemented a sophisticated GitLab CI/CD pipeline capable of deploying to multiple VPCs and Kubernetes clusters across development, pre-production, and production environments. I integrated Fortify into development IDEs and implemented comprehensive SAST/DAST scanning in GitLab pipelines to identify vulnerabilities early in the development lifecycle. My work included the integration of Aquasec, Nessus, ELK, and Splunk for multi-layered security monitoring and threat detection. I designed an innovative multi-VPC architecture supporting secure microservice deployments, while enforcing security best practices throughout the development process.
Senior Cyber Security Consultant
T-Mobile
June 2019 - January 2020
Experience Overview
As a Senior Cyber Security Consultant at T-Mobile, I was responsible for protecting the company's critical 5G infrastructure from RAN sites to subscriber databases. I embedded robust security practices within the DevSecOps lifecycle using Kubernetes, Docker, and CI/CD methodologies. My work involved conducting comprehensive security assessments and secure code reviews utilizing tools such as Tenable, Qualys, OpenVAS, and Fortify. I performed in-depth penetration testing and risk analysis to identify and remediate potential vulnerabilities. A key focus of my role was ensuring compliance with PCI-DSS, SOX, and CCPA regulations. I applied MITRE ATT&CK techniques to harden cloud architecture across AWS, Azure, and GCP platforms, while optimizing firewall configurations and log management through ELK and Splunk implementations.
Chief Information Security Officer
US Army (UTARNG)
August 2016 - June 2019
Experience Overview
As CISO for the US Army (UTARNG), I designed and implemented a sophisticated tier 3 private cloud infrastructure with impressive specifications: 1.5 THz of CPU power, 12 TB of RAM, and 1 PB of storage, supporting over 800 virtual machines. I completely re-architected the datacenter networking infrastructure using Cisco Nexus (7000 series & FEX) equipment. My security initiatives included implementing encrypted VPN pipelines to off-site locations and building a comprehensive threat hunting infrastructure utilizing Bro, Suricata, and Silk, with ELK for CVE monitoring. I managed Nessus with ACAS and conducted regular compliance scans to maintain security standards. I led penetration testing teams and enforced RMF compliance across all systems. One of my key achievements was authoring a Continuity of Operations Plan that ensured 99.99% uptime during outages or disasters.
25 CMF IT Instructor
US Army (UTARNG)
July 2015 - October 2018
Experience Overview
As a 25 CMF IT Instructor for the US Army (UTARNG), I taught comprehensive courses covering MOS 25B topics including CCNA Routing & Switching, MCSA Server (2008, 2012, 2016), and various cybersecurity certifications including CompTIA Security+, CASP+, and CEH. I managed a robust infrastructure of 8 physical Windows Server 2012 servers in an N-tier design to support training environments. Additionally, I designed and implemented a sophisticated 6-server VMware vSphere cluster capable of supporting over 400 virtual machines for hands-on training scenarios. My role involved developing and delivering technical curriculum that prepared military personnel for both their service duties and civilian IT careers, with a strong emphasis on practical, real-world applications of networking, server administration, and cybersecurity principles.
Senior Cyber Security Engineer
Everbridge
July 2021 - Present
Experience Overview
As Senior Cyber Security Engineer at Everbridge, I spearheaded the design and implementation of advanced Security Operations and Incident Response (SOAR) capabilities. I led the development of AI-powered agents and chatbots for security automation and threat intelligence, significantly enhancing our proactive defense posture. My work involved building robust automated threat detection systems using Terraform, Kubernetes, and CI/CD pipelines across multiple cloud platforms. I successfully integrated security mechanisms across AWS, Azure, and GCP environments, ensuring FedRAMP accreditation compliance. Additionally, I deployed comprehensive enterprise security solutions and led initiatives to meet rigorous compliance standards.
Senior Cyber Security Architect
Warner Bros. Discovery
July 2021 - September 2024
Experience Overview
At Warner Bros. Discovery, I served as the primary security architect for the enterprise, where I designed and implemented robust security frameworks for the organization's digital infrastructure. I specialized in security automation and Infrastructure as Code using Terraform, enabling consistent and scalable security controls. My responsibilities included conducting thorough vulnerability assessments using industry-leading tools like SentinelOne, Brinqa, Nessus, and Splunk. I maintained strict alignment with critical compliance frameworks including NIST, ISO 27001, and SOC 2. Throughout my tenure, I secured complex hybrid cloud environments spanning AWS, Azure, and GCP, while providing executive-level reporting on security posture and risk mitigation strategies.
Senior Cyber Security Architect
CACI
January 2020 - September 2022
Experience Overview
While at CACI, I led secure cloud infrastructure development for CBP's mission support directorate (MSD). I architected and implemented a sophisticated GitLab CI/CD pipeline capable of deploying to multiple VPCs and Kubernetes clusters across development, pre-production, and production environments. I integrated Fortify into development IDEs and implemented comprehensive SAST/DAST scanning in GitLab pipelines to identify vulnerabilities early in the development lifecycle. My work included the integration of Aquasec, Nessus, ELK, and Splunk for multi-layered security monitoring and threat detection. I designed an innovative multi-VPC architecture supporting secure microservice deployments, while enforcing security best practices throughout the development process.
Senior Cyber Security Consultant
T-Mobile
June 2019 - January 2020
Experience Overview
As a Senior Cyber Security Consultant at T-Mobile, I was responsible for protecting the company's critical 5G infrastructure from RAN sites to subscriber databases. I embedded robust security practices within the DevSecOps lifecycle using Kubernetes, Docker, and CI/CD methodologies. My work involved conducting comprehensive security assessments and secure code reviews utilizing tools such as Tenable, Qualys, OpenVAS, and Fortify. I performed in-depth penetration testing and risk analysis to identify and remediate potential vulnerabilities. A key focus of my role was ensuring compliance with PCI-DSS, SOX, and CCPA regulations. I applied MITRE ATT&CK techniques to harden cloud architecture across AWS, Azure, and GCP platforms, while optimizing firewall configurations and log management through ELK and Splunk implementations.
Chief Information Security Officer
US Army (UTARNG)
August 2016 - June 2019
Experience Overview
As CISO for the US Army (UTARNG), I designed and implemented a sophisticated tier 3 private cloud infrastructure with impressive specifications: 1.5 THz of CPU power, 12 TB of RAM, and 1 PB of storage, supporting over 800 virtual machines. I completely re-architected the datacenter networking infrastructure using Cisco Nexus (7000 series & FEX) equipment. My security initiatives included implementing encrypted VPN pipelines to off-site locations and building a comprehensive threat hunting infrastructure utilizing Bro, Suricata, and Silk, with ELK for CVE monitoring. I managed Nessus with ACAS and conducted regular compliance scans to maintain security standards. I led penetration testing teams and enforced RMF compliance across all systems. One of my key achievements was authoring a Continuity of Operations Plan that ensured 99.99% uptime during outages or disasters.
25 CMF IT Instructor
US Army (UTARNG)
July 2015 - October 2018
Experience Overview
As a 25 CMF IT Instructor for the US Army (UTARNG), I taught comprehensive courses covering MOS 25B topics including CCNA Routing & Switching, MCSA Server (2008, 2012, 2016), and various cybersecurity certifications including CompTIA Security+, CASP+, and CEH. I managed a robust infrastructure of 8 physical Windows Server 2012 servers in an N-tier design to support training environments. Additionally, I designed and implemented a sophisticated 6-server VMware vSphere cluster capable of supporting over 400 virtual machines for hands-on training scenarios. My role involved developing and delivering technical curriculum that prepared military personnel for both their service duties and civilian IT careers, with a strong emphasis on practical, real-world applications of networking, server administration, and cybersecurity principles.
Let's Connect
I'm always interested in new opportunities and challenges.
Transform Your Security & AI
Partner with a CISSP-certified security architect and AI systems expert who delivers measurable results for enterprise clients.
Enhanced Security
Implement enterprise-grade security frameworks that have protected Fortune 500 companies across hybrid cloud environments.
AI Automation
Deploy autonomous AI agents that orchestrate critical operations, eliminating human error and accelerating response times.
System Optimization
Modernize infrastructure with intelligent, self-healing capabilities that dynamically adapt to emerging threats.
Cost Efficiency
Implement AI agent workflows that reduce operational overhead while enhancing security posture across all environments.
Trusted by Industry Leaders
Join organizations like Everbridge, Warner Bros. Discovery, and T-Mobile who have transformed their security and AI operations.
Choose Your Service Level
Flexible engagement options to match your specific needs and project requirements
Ad-Hoc Hourly
Ideal for immediate or short-term needs requiring rapid, high-value expertise.
Features & Benefits
- Flexible, On-Demand SupportEngage quickly without long-term commitments.
- Priority SchedulingRapid response for emergency incidents, critical reviews, or urgent fixes.
- Minimal OverheadSimple hourly billing, easy to scale up or down as needed.
Use Cases
- Emergency incident response or threat assessments
- Quick code or architecture reviews
- Immediate DevSecOps or AI prototype troubleshooting
Contract-Length Hourly
Suited for longer engagements with a defined contract length, offering a slightly reduced rate.
Features & Benefits
- Predictable CollaborationGuaranteed resource availability over an extended period.
- Discounted Hourly RateReward for committing to a longer relationship or multi-phase project.
- Deeper PartnershipOpportunity to embed into the client's team and processes for ongoing improvements.
Use Cases
- Security transformations over multiple sprints
- Continuous AI/ML development and integration
- Cloud migration or compliance projects spanning several months
Special Project (Hourly)
For large or specialized initiatives requiring a tailored hourly agreement and detailed scope.
Features & Benefits
- Custom Scope & DeliverablesFlexible scoping for unique or highly complex projects.
- Milestone-DrivenAlign payments and progress checks with project milestones.
- Specialized ExpertiseFocus on advanced security, AI workflows, or full-stack development tasks that require deeper planning.
Use Cases
- Comprehensive platform rebuilds involving Next.js and security modernization
- Advanced AI-driven threat detection pipeline set-ups
- Multi-cloud infrastructure overhauls requiring high-level architecture design
Retainer
Pre-purchased hours at a discount with guaranteed monthly availability and priority service.
Features & Benefits
- Reserved Capacity50-100 hours pre-allocated monthly, use as needed across projects.
- Priority Response24-48 hour availability for critical needs with direct communication channel.
- Strategic PartnershipRegular check-ins and proactive recommendations beyond reactive support.
Use Cases
- Ongoing technical leadership without full-time executive hire costs
- Consistent security oversight with rapid incident response capability
- Long-term AI/ML product development requiring regular expert input
What Others Are Saying
Read about the experiences of others that have benefited from expertise
"Working with Tyler on our security infrastructure was a game-changer. His military-grade approach to implementing AI-driven monitoring helped us identify and neutralize threats we would have otherwise missed entirely. His background in the Army gave him unique insights for our security protocols."
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- Free 30-minute consultation to assess your needs
- Customized strategy proposal within 48 hours
- Flexible start times to align with your schedule
- No long-term contracts required for initial engagements
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AI Security & Zero Trust Architecture Expert
Senior security architect and full stack developer specializing in secure infrastructure, DevSecOps, and AI systems. With experience securing FedRAMP-accredited environments across AWS, Azure, and GCP, I design automation solutions using Terraform, Kubernetes, and CI/CD pipelines. I also build AI agents and workflows to enhance security operations and incident response capabilities.
Location
Sioux Falls, SD, USA