Senior Manager, Real Estate & Workplace

Get to Know Us

Horizon
3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. Node Zero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises.

It is used by IT Ops/Sec Ops teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots,  checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

We're seeking a Senior Manager, Real Estate & Workplace located in the New York City Metro Area to lead our global real estate portfolio and workplace operations function. You'll oversee our expanding office footprint (currently San Francisco, Chicago, and Amsterdam; opening Washington D.C., New York, London), manage 3 members of the team, and own strategic real estate decisions alongside day-to-day operations.

This is a leadership role that spans execution and strategy. You'll own budgeting, forecasting, lease negotiations, vendor management, and workplace standards while building systems that scale across geographies and cultures. You'll work closely with Finance, People Operations, IT, Security, and Executive Leadership to ensure our real estate portfolio aligns with our business strategy and supports a thriving hybrid workforce.

This role will be responsible for:

• Owning the global real estate portfolio strategy and roadmap for 6 offices (and counting) across 4 time zones

• Evaluating new market opportunities (D.C., NYC, London, Singapore) based on hiring plans, business drivers, and financial impact

• Developing market entry business cases with financial models, risk analysis, and implementation timelines

• Forecasting real estate costs, identify optimization opportunities, and manage budget discipline across the portfolio

• Leading end-to-end office launches from market evaluation through post-launch stabilization (site selection, lease negotiation, buildout, vendor management, launch execution)

• Hiring, developing, and mentoring 3 office managers across regional hubs

• Setting standards and frameworks for office operations, employee experience, and vendor management

• Driving budgets, operational metrics, and employee satisfaction

• Fostering collaboration across office locations and support local decision-making authority

• Providing strategic guidance on complex operational decisions and escalations

• 8+ years of workplace management, real estate operations, or facilities leadership experience

• Proven track record managing real estate portfolios across multiple locations or markets

• Experience opening, scaling, or relocating office spaces in fast-growing tech or professional services companies

• Deep expertise in lease negotiation, vendor management, budgeting, and financial forecasting

• Bachelor's degree in business, real estate, facilities management, or related field

• 8+ years of workplace/real estate operations experience, including managing multiple team.

• Proven experience leading multi-market office expansion or portfolio management

• You've built or led real estate operations from near-zero in a scaling tech company

• You bring a product mindset to operations: iterate, measure, and optimize based on employee feedback

• You've navigated international expansion and understand multiple geographies, time zones, and cultures

• You can influence…