Administrative Manager

Reintech•Bozeman, MT

2d•Onsite

About The Position

About the Role Sine Engineering is a leading global company developing advanced radio communication and navigation systems. We are building mission-critical infrastructure for the multi-million-drone era. At Sine, you’ll work with cutting-edge technologies tested in the most challenging environments worldwide and see your ideas evolve into an ecosystem that safeguards humanity. We are looking for an Administrative Manager to lead and optimize administrative functions for our U.S. operations in Bozeman, Montana. This role ensures smooth administrative workflows, efficient workplace operations, and consistently high-quality internal services. We value great ideas, rapid iteration, and open collaboration- and we’re driven by the impact our solutions can make. We are seeking professionals in the U.S. who aspire to go beyond product development and contribute to shaping the world of tomorrow. What You’ll Do As our company grows in the U.S., you will: Support office build-outs and expansions. Ensure adoption of company-wide administrative standards. Help build local administrative and corporate support capabilities that operate in a matrix structure with global functions. This is a hands-on role with high ownership- ideal for someone who enjoys autonomy and wants to shape a growing international office.

Requirements

3+ years of experience in administration, office coordination, or workplace operations.
Good understanding of U.S. administrative and workplace regulations.
Strong organizational and multitasking skills.
Excellent English communication skills.
Hands-on, reliable, responsible, proactive.
Ability to work independently with high ownership.

Nice To Haves

Experience with office build-outs or relocations.
Background in tech, R&D, or international companies.
Vendor management or procurement experience.
Basic finance or invoice handling experience.
Knowledge of U.S. H&S and workplace rules.

Responsibilities

Building Local Administrative & Corporate Support Establish and structure local administrative routines (office admin, vendor management, documentation, P2P execution, compliance support).
Act as the local anchor point for global corporate functions (People & Culture, Finance, IT, Workplace, Legal, Operations Excellence).
Implement matrix-aligned processes that meet U.S. legal and operational requirements.
Support future growth of local administrative capacity (evaluate additional roles or contractors).
Maintain strong cross-functional communication to ensure seamless integration with global operations.
Administrative Processes Maintain documentation, archiving, contract storage, and records.
Handle mail, courier services, and shipments.
Support local procurement of non-technical goods and services.
Ensure compliance with U.S. administrative rules and internal policies.
Vendor & Service Management Identify and manage local suppliers and service providers.
Monitor service quality, negotiate terms, and follow up on invoices.
Maintain vendor list compliant with company-wide procurement processes.
Company-Wide Standards & Alignment Implement global administrative, workplace, documentation, and procurement standards locally.
Adapt global standards to U.S. requirements.
Provide feedback to global teams to improve cross-country processes.
Finance & Compliance Support Support invoice handling, basic bookkeeping inputs, and office-related budgeting.
Ensure compliance with U.S. H&S, fire safety, and workplace laws.
Coordinate with global Legal, Finance, and People & Culture teams on local compliance needs.
Team & Visitor Support Serve as the main administrative point of contact for U.S.-based employees.
Support onboarding (workspace setup, access, welcome logistics).
Coordinate travel, internal meetings, and local events.
Assist international colleagues visiting Bozeman.
Cross-Country Coordination Work directly with the global COO on administrative readiness and office operations.
Collaborate with global functions (People & Culture, IT, Finance, Workplace, Legal, Operations Excellence).
Participate in global routines, reporting, and alignment meetings.
Office & Workplace Operations Oversee daily functioning of the Bozeman office.
Manage relationships with landlords, cleaning, maintenance, and security providers.
Ensure workplace standards comply with U.S. regulations.
Manage office supplies, furniture, equipment, meeting rooms, and deliveries.
Coordinate access cards, keys, and visitor management.
Office Build-Out & Expansion Support planning and execution of office build-outs, refurbishments, relocations, and expansions.
Coordinate with contractors and service providers during build-out phases.
Assist with layouts, workstation planning, and workplace configurations with global teams.
Ensure timely procurement and delivery of furniture, equipment, and materials.
Oversee readiness, installation timelines, and move-in logistics.
Conduct quality checks to ensure compliance with company-wide workplace standards.
Track expenses and report status to the global COO and U.S. Lead.