Office Manager, Horizon3
€63-70k
Offers equity
4-5 days a week in office
Autonomous security solutions
Be an early applicant
Autonomous security solutions
201-500 employees
Be an early applicant
€63-70k
Offers equity
4-5 days a week in office
201-500 employees
Company mission
To help find and fix attack vectors before attackers can exploit them.
Role
Who you are
- 2+ years of experience in office management, executive support, operations, or administrative roles, ideally in a fast-growing company
- Strong organizational skills with the ability to multitask and prioritize effectively across both executive support and office operations
- Excellent written and verbal communication skills in English required; Dutch proficiency is a plus
- Tech-savvy with proficiency in tools like Google Workspace, Slack, Zoom, and expense/reporting systems
- Passion for creating engaging, inclusive workplace experiences
- Proven experience in event planning and execution, from small gatherings to large-scale
What the job involves
- We are seeking an ambitious and proactive Office Manager to join our team in Amsterdam
- This is a dual-focus role
- Approximately half of your time will be dedicated to owning the day-to-day operations of our Amsterdam and UK offices
- The other half will be focused on executive support to our VP of EMEA, including diary management, travel coordination, and the logistics and planning of EMEA-wide events
- You will be responsible for managing daily office operations, managing vendors, and creating an exceptional employee experience
- You will be expected to be in the office typically 4–5 days per week
- The nature of this role offers visibility from leaders across our growing EMEA organization and the chance to showcase ambition to executive leadership
- Office Operations & Facilities (~50%)
- Own day-to-day office operations in our Amsterdam office, including supplies, mail, facilities management, and ensuring the space is always welcoming and fully operational
- Act as primary liaison with building management, contractors, and service providers
- Manage vendor relationships, contracts, and service quality for all office-related providers
- Prioritize the employee experience, ensuring the Amsterdam office reflects Horizon3's culture and is a place where employees feel energized, supported, and connected
- Remotely manage day-to-day operations of our UK office as it comes online, including: standing up vendor relationships, coordinating logistics, and serving as the operational point of contact for UK-based employees
- Executive & EMEA Support (~50%)
- Serve as the executive support partner for our VP of EMEA, managing complex scheduling, calendar prioritization, and travel coordination across the region
- Plan, coordinate, and execute EMEA-wide events, including team offsites, customer events, regional all-hands, and milestone celebrations, all while ensuring smooth end-to-end logistics (venues, travel, catering, activities, and budgets)
- Own logistics and scheduling for EMEA leadership meetings, QBRs, and cross-functional gatherings, anticipating needs and resolving conflicts proactively
- Manage vendor relationships for EMEA event services, including caterers, venues, and entertainment
- Track budgets and ensure events and travel are delivered on time, within scope, and aligned with company values
Our take
In an era marked by escalating cyber threats and data breaches, safeguarding digital assets has become a high priority across all industries. Amid this landscape, Horizon3.ai stands out as an autonomous security solution by addressing the critical need for robust cybersecurity.
At the heart of Horizon3.ai's mission is NodeZero™, a platform designed to elevate proactive security measures. Using this, customers can verify their security posture and identify potential vulnerabilities through self-service. This proactive approach to cybersecurity effectively thwarts potential exploits and ensures the integrity of their digital infrastructure.
With 2025 funding in hand, the company is poised to further its ambition to develop into an industry-leading cybersecurity company. The infusion of funds will be channelled towards expanding its partner network, refining its offerings and entering the US government market. Horizon3 aims to establish itself as a pivotal player in the evolving autonomous security landscape, a highly lucrative market valued at $80 billion.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
-8% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Jun 2025
$100m
SERIES D
Aug 2023
$40m
SERIES C
Total funding: $187m
Company benefits
- Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities
- Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking
- Flexible Work Environment: Enjoy the convenience and work-life balance that comes with remote work
- Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive
Company HQ
SoMa, San Francisco, CA
Leadership
Snehal Antani
(Co-Founder & CEO)Graduated from the Rensselaer Polytechnic Institute with an MS in Computer Science. Previously worked at IBM as a Lead Architect, at GE Capital as the CIO of Distribution Finance and Splunk as the SVP & GM of Business Analytics & IoT.
Anthony Pillitiere
(Co-Founder)Graduated from the University of Maryland with a Bachelor's Degree in Computer Systems Networking and Telecommunications. Previously worked at the United States Air Force in multiple roles, including Deputy Chief Technology Officer.
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