Who We Are: TKO Group Holdings, Inc. (NYSE: TKO) is a premium sports and entertainment company. TKO owns iconic properties including UFC, the world’s premier mixed martial arts organization; WWE, the global leader in sports entertainment; and PBR, the world’s premier bull riding organization. Together, these properties reach 1 billion households across 210 countries and territories and organize more than 500 live events year-round, attracting more than three million fans. TKO also services and partners with major sports rights holders through IMG, an industry-leading global sports marketing agency; and On Location, a global leader in premium experiential hospitality. DEPARTMENT: TKO IT Infrastructure MAIN PURPOSE The Global Messaging Architect exists to design and govern TKO’s enterprise-wide messaging and collaboration ecosystem. This role ensures that email, calendaring, and security platforms are reliable, secure, and scalable across all global brands, while enabling seamless collaboration for employees, partners, and talent. At its core, the role provides architectural leadership across M&A, divestiture, and brand migration programs, safeguarding business continuity, regulatory compliance, and executive communications. This is a pivotal position at the intersection of technology strategy, cybersecurity, and enterprise collaboration, directly influencing the experience of every TKO employee worldwide. WHY JOIN TKO? TKO unites three of the most recognizable brands in global sports — UFC, WWE, and PBR — with the premier hospitality brand, OLE, and the world-class broadcast, sports, and events company, IMG, to form a next-generation technology, sports, and entertainment powerhouse. As TKO prepares to separate from Endeavor and build a fresh infrastructure, this is a rare opportunity to engineer core systems at scale in a greenfield environment. You’ll work with cutting-edge identity, cloud, and infrastructure technologies from Okta and Entra ID and enterprise automation using Workato, Service Now, Workday, and Okta Workflows. The challenges are complex, the expectations are high, and the impact is real. Your work will support everything from corporate operations to global broadcasts and live events. If you want to build something that lasts and do it with autonomy and purpose, then TKO is where you want to be. LINE MANAGER: Director, Workplace Engineering WORKING HOURS: Dynamic EMPLOYMENT TYPE: Permanent LOCATION: Stamford or remote KEY RESPONSIBILITIES Define and maintain the global messaging architecture across Exchange Online, M365, and integrated security/compliance platforms. Develop and enforce governance models, standards, and best practices to ensure consistent, secure, and scalable messaging services worldwide. Lead messaging strategy through M&A, divestiture, and rebranding initiatives, ensuring seamless coexistence and business continuity. Architect and oversee global mail routing, security filtering, authentication standards (SPF/DKIM/DMARC), and hybrid coexistence. Direct engineering teams on monitoring, troubleshooting, and performance optimization for mail and calendaring systems. Partner with Global Security Operations to strengthen phishing defense, vulnerability patching, and threat detection. Provide architectural leadership for integration with Teams, Slack, Zoom, and other collaboration tools. Ensure compliance with global regulations (SOX, PCI, GDPR, PIPL, HIPAA) through secure design and retention/eDiscovery controls. Establish architecture for journaling, litigation holds, retention, and regulatory reporting in collaboration with Legal and Compliance. Govern role-based administration, privileged access, and identity controls across messaging platforms. Act as the enterprise subject matter expert for messaging, influencing cross-functional roadmaps and vendor strategy. Advise executives and senior leadership on risk, cost optimization, and strategic investments in messaging and collaboration. Mentor engineers and administrators, raising overall team capability and ensuring adoption of best practices. SKILLS & ABILITIES Architectural Leadership: Able to design, articulate, and defend email and messaging architecture decisions across hybrid environments (M365, Exchange Online, Exchange on Prem, Okta, AD, Entra ID). Extreme Ownership: adopts the leadership philosophy that means taking accountability for failures, setbacks, and results within your sphere of influence, even those caused by others on your team. Execution-Focused: Operates with urgency and accountability; drives deliverables forward without constant oversight. Analytical Thinking: Able to break down complex technical problems and deliver practical, scalable solutions. Documentation Excellence: Produces clear, detailed, and professional HLDs, LLDs, runbooks, and process diagrams. Mentorship & Collaboration: Capable of guiding junior engineers and collaborating effectively across infrastructure, security, and application teams. Communication: Strong written and verbal communication skills; able to influence stakeholders and explain complex concepts to technical and non-technical audiences. Comfort with Ambiguity: Thrives in environments where direction is still forming and able to bring structure and clarity to grey areas. Resilience: Maintains focus and composure under pressure in fast-moving, high-visibility environments. Customer Orientation: Keeps business impact front of mind; balances technical excellence with pragmatic execution. QUALIFICATIONS & TRAINING Required Bachelor’s degree in computer science, Information Technology, Engineering, or a related field, or equivalent hands-on experience. 8+ years of experience in identity and access management, enterprise infrastructure. Demonstrated experience leading identity architecture and delivery for large-scale, hybrid environments. Hands-on, expert-level proficiency with: Microsoft 365 (Exchange Online, Teams Online, SharePoint Online, etc.) Google Workspace Okta Identity Cloud (SSO, MFA, Workflows, Lifecycle Management, Identity Governance) Microsoft Active Directory (forest/domain design, GPOs, trusts, replication) Microsoft Entra ID / Azure AD (hybrid join, conditional access, identity federation) Desirable project experience: Played a lead role in messaging separation or integration during complex M&A events, including domain consolidation, rebranding, and tenant-to-tenant migrations. Architected mail routing and coexistence between acquired/divested entities while maintaining business continuity and compliance. Implemented SPF, DKIM, DMARC, MTA-STS, and DANE across global brands to harden email security. Rolled out enterprise-grade anti-phishing and advanced threat protection platforms (Mimecast, Proofpoint, Microsoft Defender for Office 365). Built global monitoring and alerting frameworks for messaging health, performance, and mail flow. Preferred Certifications: Microsoft Certified: Exchange Server 2019 / Exchange Online Expert (or legacy MCSE: Messaging) Mimecast Certified Specialist / Engineer Microsoft Certified: Identity and Access Administrator Associate (SC-300) Microsoft Certified: Azure Solutions Architect Expert Certified Information Systems Security Professional (CISSP) or GIAC certifications (IAM/GRC) Training or certification in Zero Trust Architecture, PIM/PAM Design, IAM Governance Per local requirements and in the interest of transparency, the hourly rate shown below reflects the prevalent current hiring range for this position. Hiring pay rates are based on a number of factors, including location and may vary depending on job-related qualifications, knowledge, skills and experience. The company strives to provide locally competitive rewards packages, which include base rate along with, as applicable, short- and long-term incentives, growth and developmental opportunities, and robust benefits, such as health care, retirement, vacation and other paid time off, and additional offerings. Hiring Rate Minimum: $135,000 annually(minimum will not fall below the applicable State/local minimum salary thresholds) Hiring Rate Maximum: $180,000 annually TKO is an Equal Opportunity Employer and complies with all applicable federal, state, and local laws regarding non-discrimination in employment. TKO makes employment decisions based on merit and qualifications, without considering an employee’s or applicant’s race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, marital status, veteran status, or any other basis prohibited under federal, state or local laws governing non-discrimination in employment in every location in which the Company has facilities. TKO also provides reasonable accommodations for qualified individuals with disabilities in accordance with the Americans with Disabilities Act (ADA) and applicable state or local laws. For information about Privacy and Information Security for TKO employment candidates, please review our Privacy Policy. For information regarding Terms of Use for this and other TKO websites, please review our Terms of Use. TKO Group Holdings, Inc. (NYSE: TKO) is a premium sports and entertainment company. TKO owns iconic properties including UFC, the world’s premier mixed martial arts organization; WWE, the global leader in sports entertainment; and PBR, the world’s premier bull riding organization. Together, these properties reach 1 billion households across 210 countries and territories and organize more than 500 live events year-round, attracting more than three million fans. TKO also services and partners with major sports rights holders through IMG, an industry-leading global sports marketing agency; and On Location, a global leader in premium experiential hospitality. About WWE WWE® is an integrated media organization and the recognized global leader in sports entertainment. The company consists of a portfolio of businesses that create and deliver original content 52 weeks a year to a global audience. WWE is committed to family-friendly entertainment on its television programming, premium live events, digital media, and publishing platforms. WWE’s TV-PG programming can be seen in more than 1 billion households worldwide in more than 20 languages through world-class distribution partners including NBCUniversal, The CW and Netflix. In the United States, NBCUniversal’s streaming service, Peacock, is the exclusive home to all premium live events, a variety of original programming and a massive video-on-demand library. Netflix is the exclusive home for WWE programming around the world, other than select international markets. WWE is part of TKO Group Holdings (NYSE: TKO). Additional information on WWE can be found at wwe.com and corporate.wwe.com. About UFC UFC® is the world’s premier mixed martial arts organization (MMA), with more than 700 million fans and approximately 290 million social media followers. The organization produces more than 40 live events annually in some of the most prestigious arenas around the world while broadcasting to over 975 million households across more than 170 countries. UFC’s athlete roster features the world’s best MMA athletes representing more than 80 countries. The organization’s digital offerings include UFC FIGHT PASS®, one of the world’s leading streaming services for combat sports. UFC is part of TKO Group Holdings (NYSE: TKO) and is headquartered in Las Vegas, Nevada. For more information, visit UFC.com and follow UFC at Facebook.com/UFC and @UFC on X, Snapchat, Instagram, and TikTok: @UFC. About IMG IMG is a leading global sports marketing agency, specializing in media rights management and sales, multi-channel content production and distribution, brand partnerships, strategic consulting, digital services, and events management. It powers growth of revenues, fanbases and IP for more than 200 federations, associations, events, and teams, including the National Football League, English Premier League, International Olympic Committee, National Hockey League, Major League Soccer, ATP and WTA Tours, the AELTC (Wimbledon), Euroleague Basketball, CONMEBOL, DP World Tour, and The R&A, as well as UFC, WWE, and PBR. IMG is a subsidiary of TKO Group Holdings, Inc. (NYSE: TKO), a premium sports and entertainment company. About PBR PBR is the world’s premier bull riding organization. More than 1,000 bull riders compete in more than 200 events annually across the televised PBR Unleash The Beast tour (UTB), which features the top bull riders in the world; the PBR Pendleton Whisky Velocity Tour (PWVT); the PBR Touring Pro Division (TPD); and the PBR’s international circuits in Australia, Brazil, and Canada. In 2022, PBR launched the nationally televised PBR Teams league—eight teams of the world’s best bull riders competing for a new championship expanding to 10 teams in 2024—as well as the PBR Challenger Series with more than 60 annual events nationwide. The organization’s digital assets include PBR RidePass on Pluto TV, which is home to Western sports. PBR is a subsidiary of TKO Group Holdings, Inc. (NYSE: TKO), a premium sports and entertainment company. For more information, visit PBR.com, or follow on Facebook at Facebook.com/PBR, X at X.com/PBR, and YouTube at YouTube.com/PBR. About On Location On Location is a global leader in premium experiential hospitality, offering ticketing, curated guest experiences, live event production and travel management across sports, entertainment, fashion and culture. On Location provides unrivaled access for corporate clients and fans looking for official, immersive experiences at marquee events, including the Olympic and Paralympic Games, FIFA World Cup 2026, Super Bowl, NCAA Final Four, and more. An official partner and/or service provider to over 150 iconic rights holders, such as the IOC (the Milano Cortina 2026 and Los Angeles 2028 Olympic Games), FIFA, NFL, NCAA, UFC, WWE, and PGA of America, the company also owns and operates a number of its own unique experiences. On Location is a subsidiary of TKO Group Holdings, Inc. (NYSE: TKO), a premium sports and entertainment company. About Zuffa Boxing Zuffa Boxing is a joint venture between TKO Group Holdings, Inc. (“TKO”) (NYSE: TKO) and Sela, the entertainment conglomerate. TKO serves as managing partner, providing day-to-day operational expertise, management, and oversight of the promotion, with executive leadership anchored by UFC President and CEO Dana White and WWE President and TKO Board Member Nick Khan. The promotion aims to reimagine the sport of boxing by evolving the current model to restore the sport’s rightful place in the forefront of the global sports ecosystem. For more information, follow @Zuffa_Boxing on X; and @ZuffaBoxing on Snapchat, Instagram, Threads, and TikTok.

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