Office & Operations Manager H/F

About Alta Ares

Alta Ares is an air defense Neoprime. We build AI-guided interceptors to counter drones and cruise missiles, along with the software platform that powers them.

Our customers are NATO-aligned militaries and defense institutions, and our systems are regularly deployed during live exercises and operational demonstrations across Europe, the Middle East, and Asia.

Founded in 2024, we have grown to 90 people, raised over $60M, and increased revenue 40× this year. We are now entering a new phase of international expansion, industrial scaling, fundraising, and product development.

The Role

We are looking for an Office & Operations Manager to become the operational backbone of our Paris headquarters. You will ensure that our teams can operate efficiently by managing the office environment, coordinating administrative operations, supporting leadership, and delivering an exceptional experience for employees, visitors, and external stakeholders.

This is a highly visible, high-ownership role at the heart of the company. You will interact daily with engineers, executives, military partners, suppliers, and institutional stakeholders while helping Alta Ares scale its internal operations.

Responsibilities

Office Management & Facilities

• Own the day-to-day operation of the Paris office, including facilities, supplies, equipment, and workspace organization

• Manage relationships with landlords, service providers, and suppliers, ensuring service quality and cost efficiency

• Coordinate maintenance, deliveries, office improvements, and workspace projects

• Maintain a professional, safe, and efficient working environment aligned with Alta Ares' culture and standards

• Manage office budgets and proactively anticipate operational needs

Reception & Visitor Experience

• Serve as the first point of contact for visitors, customers, partners, and institutional stakeholders

• Coordinate meeting rooms, visitor access, demonstrations, and executive visits

• Manage incoming calls, mail, deliveries, and courier services

• Ensure a welcoming, professional, and security-conscious office environment

Executive & Team Support

• Support the CEO and leadership team with travel arrangements, expense management, scheduling, and logistics

• Coordinate internal meetings, offsites, and operational projects

• Assist with the preparation of presentations, briefings, and internal documentation

• Facilitate coordination across teams on operational and administrative topics

Administrative & Business Operations

• Manage onboarding logistics for new employees, including equipment, office access, and workspace setup

• Maintain organized records of contracts, suppliers, and administrative documentation

• Support finance operations through invoice tracking, purchase order management, and supplier coordination

• Help design and improve internal processes, tools, and workflows as the company scales

Events & Company Culture

• Organize internal events, team gatherings, offsites, and company celebrations

• Coordinate logistics for customer visits, demonstrations, and events hosted at Alta Ares

• Contribute to building a positive, rigorous, and mission-driven workplace culture

Requirements

Candidate Profile

Experience

• 3–6 years of experience in Office Management, Operations, Executive Assistance, or a similar role

• Experience working in a fast-paced startup, scale-up, consulting firm, or professional services environment

• Proven ability to manage facilities, suppliers, and administrative operations end-to-end

• Experience supporting senior leadership or C-level executives

• Previous exposure to defense, aerospace, government, or highly regulated industries is a plus

Skills

• Exceptionally organized, rigorous, and proactive

• Strong interpersonal and communication skills with the ability to interact confidently with a wide range of stakeholders

• Highly trustworthy and discreet when handling sensitive information

• Resourceful, hands-on, and execution-oriented

• Comfortable managing multiple priorities in a dynamic environment

• Fluent in both French and English

• Proficient with modern office and productivity tools (Google Workspace, Notion, expense management tools, etc.)