Senior Real Estate Manager Jobs in Reston, VA (NOW HIRING)

Horizon3.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. NodeZero 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/SecOps 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 senior leadership and push back constructively when needed

This role requires approximately 15-20% travel for office launches, site visits, and management meetings across Chicago, Washington D.C., New York, London, and future offices. Travel is primarily project-driven and planned in advance.

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

• Base salary range: $180,000 - $220,000 annually. The exact salary will be determined based on the selected candidate's location, qualifications, experience, and relevant skills.




• Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.




• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.




• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.




• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago and Amsterdam offices, where some roles require regular in‑office presence.




• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, hair length or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting‑edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.