Sr. Network Engineer

Empire State Realty Trust•New York, NY

5d•$155,000 - $175,000•Hybrid

About The Position

Empire State Realty Trust, Inc. (NYSE: ESRT) is a NYC-focused REIT that owns and operates a portfolio of well-leased, top of tier, modernized, amenitized, and well-located office, retail, and multifamily assets. ESRTâ€™s flagship Empire State Building, the â€œWorld's Most Famous Building,â€ features its iconic Observation Deck, ranked the #1 Top Attraction in New York City for the fifth consecutive year in Tripadvisorâ€™s 2026 Travelersâ€™ Choice Awards: Best of the Best Things to Do. The Company is a recognized leader in energy efficiency and indoor environmental quality. As of March 31, 2026, ESRTâ€™s portfolio is comprised of approximately 8.0 million rentable square feet of office space, 0.8 million rentable square feet of retail space and 743 residential units. More information about Empire State Realty Trust can be found at esrtreit.com and by following ESRT on Facebook, Instagram, TikTok, X and LinkedIn. The dedicated team at ESRT is a collection of diverse individuals with a shared passion for excellence and a keen eye toward future growth. Headquartered in New York City, we harness the energy of the city in everything we do. We care for one another, work hard, and have a lot of fun doing it! We are Certifiedâ„¢ as a Great Place to WorkÂ® by the global authority, Great Place to WorkÂ®, on workplace culture, employee experience, and leadership behaviors. We prioritize and invest in the health and wellness of employees to attract, develop, and retain top-tier talent. ESRT values continuous employee development and encourages colleagues to excel in their roles and adapt to emerging business needs. From our crown jewel, The Empire State Building, to incredible buildings modernized for the 21st century, to outstanding customer service, and our decade-long leadership position in sustainability and energy efficient portfolio that is 100% fully powered by renewable wind electricity, we take pride in our work. ESRT seeks an equally passionate colleague to join the team, understand the vision and help achieve that vision.

Requirements

Communicates complex technical issues, architectural decisions, and incident status clearly to both engineering peers and executive leadership
Strong analytical and troubleshooting instincts works through ambiguous, high-pressure situations methodically and calmly
Collaborative mindset: works effectively with internal teams, MSP, MSSP, and vendors; shares knowledge freely and raises team capability
Self-directed and highly accountable that takes ownership without waiting to be asked and follows through to full resolution
Strong documentation discipline; leaves systems, configurations, and designs better documented than found
Proactively monitors industry developments and brings emerging technologies and best practices to the team's attention
Expert-level policy management, troubleshooting, and architecture across a distributed multi-site environment
Panorama: centralized policy administration, device group management, log forwarding, and operational management at scale
Advanced firewall design: zone-based architecture, App-ID, User-ID, URL filtering, SSL decryption, threat prevention, and WildFire integration
GlobalProtect: VPN configuration, gateway management, and site-to-site connectivity
NAT policy design, security profile tuning, and firewall policy lifecycle management
PCNSE certification strongly preferred
Aruba CX / AOS-CX switching — configuration, troubleshooting, and lifecycle management across multi-site environments
Aruba Central management: RF planning, access point lifecycle, and performance optimization
Wireless security: 802.1X, RADIUS integration, guest network segmentation, and rogue AP detection
SD-WAN architecture awareness and WAN/ISP circuit failover design
Zscaler Internet Access (ZIA) URL filtering, SSL inspection, cloud firewall, and policy configuration
Zscaler Private Access (ZPA) zero-trust application access, app connector management, and policy administration
Zscaler tenant administration, log streaming, and integration with SIEM and identity providers
Okta SSO/SAML/OIDC configuration, MFA enforcement, and user lifecycle management including SCIM provisioning
Okta integration with Palo Alto User-ID, Zscaler IdP federation, and Azure AD directory sync
PAM platform familiarity and IAM integration with network access controls and Conditional Access Policies
Windows DNS / Active Directory-integrated internal DNS, external authoritative DNS, and split-brain DNS architectures
DNSSEC implementation and DNS-based threat detection and filtering
Domain protection — monitoring for lookalike/spoofed domains and unauthorized SSL/TLS certificate issuance
SSL/TLS certificate lifecycle management across internal and external services
BitSight or equivalent EASM platform administration
Anti-spam, anti-phishing, email encryption, and threat response policy management
Platform administration including quarantine management, allow/block lists, and reporting
Coordination with the security team on phishing investigations and incident response
Experience with a comparable enterprise email security platform considered equivalent
Hands-on experience with network design for building management systems (BMS), IoT devices, and PropTech deployments
Network segmentation for OT/IT boundaries including VRF separation and secure access control
Experience supporting access control, CCTV, AV systems, and sustainability technology in a commercial real estate or multi-family residential environment
Awareness of OT security principles and protocols relevant to building infrastructure
Physical server management, rack installation, and data center operations including cabling, power, and cooling
VMware vSphere, virtual networking and server resource management
Microsoft Windows Server 2019/2022/2025 and Linux administration
Microsoft Active Directory, DNS, and DHCP infrastructure management
SAN/NAS storage networking and business continuity / backup technologies
Working knowledge of PCI-DSS and SOX requirements for network segmentation, access control, and audit logging
Firewall ACL governance, policy review cycles, and evidence collection for compliance audits
Experience in a regulated industry (real estate, financial services, or similar) preferred
Microsoft Azure — VNet design, hybrid connectivity (ExpressRoute / VPN Gateway), NSGs, Azure Firewall, and Azure AD / Entra
Hybrid DNS resolution, cloud-to-on-premises connectivity patterns, and identity federation
Microsoft 365 and Exchange Online — network requirements, split tunneling, and connectivity optimization
8–10 years of progressive, hands-on enterprise network engineering experience with demonstrated depth in complex, multi-site environments
At least 3 years in a senior or lead capacity managing complex, multi-site infrastructure
Proven experience serving as a technical escalation resource or informal architect on an infrastructure team
Experience in Real Estate, Financial Services, or a similarly regulated industry preferred
PCNSE (Palo Alto Networks Certified Network Security Engineer) strongly preferred; Panorama hands-on experience is a firm requirement
Aruba/HPE (ACSA/ACCP), Zscaler (ZCCA-IA/PA), Azure (AZ-104), or Okta Certified Administrator are a plus
CCNP Enterprise or equivalent routing/switching certification considered; demonstrated production depth matters most
Associate's or Bachelor's Degree in Computer Science, Information Technology, or related field preferred; equivalent professional experience considered

Nice To Haves

PCNSE certification strongly preferred
Aruba/HPE (ACSA/ACCP), Zscaler (ZCCA-IA/PA), Azure (AZ-104), or Okta Certified Administrator are a plus
CCNP Enterprise or equivalent routing/switching certification considered; demonstrated production depth matters most
Associate's or Bachelor's Degree in Computer Science, Information Technology, or related field preferred; equivalent professional experience considered

Responsibilities

Serve as the primary escalation point for complex network incidents, outages, and performance issues owing problems through to resolution with clear communication to stakeholders
Provide expert guidance to internal engineers, MSP resources, and NOC personnel on architecture, troubleshooting methodology, and root cause analysis
Lead post-incident reviews, drive root cause identification, and implement lasting remediations to prevent recurrence
Evaluate complex vendor and MSP escalations; make technical decisions on design, tooling, and resolution approach
Work with the Director of Network & Infrastructure to architect scalable, resilient, and secure network solutions across LAN, WAN, wireless, cloud, and building infrastructure
Lead the design and evolution of network segmentation strategy including zero-trust principles, VRF separation, and secure OT/IT boundary enforcement
Develop and maintain network infrastructure standards, reference architectures, and design patterns for consistent deployment across properties
Evaluate emerging technologies and contribute to the long-term infrastructure roadmap, particularly around Palo Alto / Panorama, Aruba, and cloud connectivity platforms
Design, deploy, and manage enterprise network infrastructure across BMS, IoT, Wi-Fi, PropTech, AV, security systems, corporate offices, and the Observatory
Administer Palo Alto NGFWs via Panorama — policy management, threat prevention, VPN, NAT, and security profile lifecycle management
Manage and optimize Aruba switching and wireless infrastructure including configuration, upgrades, RF planning, and troubleshooting via Aruba Central
Own BGP, OSPF, VLANs, VPN, QoS, and DNS configurations across multi-site environments
Manage WAN and ISP connectivity including failover design and carrier-level troubleshooting
Support IoT and PropTech deployments in a secure manner with a focus on building systems, access control, and sustainability technology
Lead network security posture improvements including firewall policy lifecycle, ACL governance, and vulnerability remediation
Administer Zscaler ZIA and ZPA — URL filtering, SSL inspection, cloud firewall rules, and app connector management
Manage Proofpoint email security platform including anti-spam, anti-phishing, encryption, and threat response policies
Administer BitSight to track, triage, and coordinate remediation of external security posture findings
Maintain PCI-DSS and SOX compliance through adherence to and enforcement of network policies and procedures
Collaborate with the MSSP on security monitoring, threat analysis, and incident response
Ensure timely application of patches, hotfixes, and firmware upgrades across all network equipment
Administer Okta for SSO/SAML/OIDC, MFA enforcement, and user lifecycle management including SCIM provisioning and deprovisioning
Manage Conditional Access Policies and integrate identity platforms with Palo Alto User-ID, Zscaler IdP federation, and Azure AD
Design and manage Microsoft Azure cloud networking including hybrid connectivity, VNet architecture, NSGs, and Azure Firewall
Support Microsoft 365 and Exchange Online from a network and connectivity perspective including split tunneling and optimization
Support IAM and PAM platforms as they relate to network access control and privilege governance
Manage physical server infrastructure, rack equipment installation, and data center operations including cabling, power, and cooling
Administer building riser infrastructure and ensure secure integration of IT and OT devices on segregated network segments
Support VMware vSphere virtual networking environments and server resource management
Oversee SAN/NAS storage networking and business continuity / backup technologies
Drive network monitoring strategy and tooling to ensure proactive alerting and performance trending across the full infrastructure estate
Author and maintain high-quality documentation including topology diagrams, configuration baselines, SOPs, and runbooks
Contribute to business continuity and disaster recovery procedures; develop, test, and maintain failover runbooks
Adhere to change management and PMO best practices for all infrastructure changes; manage project milestones with clear stakeholder communication