Senior Executive Assistant & Office Operations Lead

Alta Resource Technologies; Boulder (CO); On-site; USD 80,000 - 95,000; Full time

Benefits offered by this job

401(K)

Medical, Dental, Vision plans (or eq.)

Flexible Time Off

Paid Parental Leave

Paid Sick Leave

Company Holidays

Job summary

Alta Resource Technologies in Boulder, CO is hiring a Sr. Administrative Assistant / Office Manager to support the Office of the CEO.

This high-trust role owns scheduling, travel, workplace operations, and coordination to keep a fast-moving leadership team focused on strategy and execution. With 39 employees today and growth to 50+, you will implement repeatable processes, manage calendars, board logistics, onboarding, and executive communications, while representing Alta professionally to

Qualifications

• Associate’s or Bachelor’s degree or equivalent experience.
• 3–5 years of administrative, executive support, or office operations experience.
• Proven discretion with confidential personnel, financial, and board information.
• Strong written and verbal communication, including with external partners and investors.
• Highly organized with a bias toward closing loops and following through.
• Proficiency with Google Workspace or Microsoft 365, video conferencing, and expense management tools.
• Availability outside standard hours as needed, including evenings or weekends for special events.
• U.S. citizenship and valid passport required.

Responsibilities

• Own calendar management for the CEO, and for VPs and C-suite leaders as needed.
• Schedule and reschedule meetings, resolving conflicts without escalating each one.
• Protect focus time and enforce meeting standards set by the Chief of Staff.
• Coordinate complex multi-party meetings across functions, facilities, and external stakeholders.
• Manage the logistics of recurring leadership meetings, including room, materials distribution, and remote access.
• Book and manage domestic and international travel for the executive team, including itineraries.
• Administer vendor relationships for office services: onboarding, invoicing, renewals, and issue resolution.
• Maintain purchasing and supply processes across facilities within approved budgets.
• Prepare and submit expense reports; track receipts, reconcile against policy, and follow through to reimbursement.
• Assemble, format, and distribute meeting materials and agendas prepared by the Chief of Staff.
• Capture notes and action items in leadership and cross-functional meetings, and route them into the tracking system.
• Follow up on outstanding action items and flag items at risk of slipping.
• Draft and distribute internal communications and announcements as directed.
• Serve as a professional first point of contact for external visitors, partners, and investors.
• Own day-to-day office operations at the Boulder site: supplies, equipment, facilities requests, and workspace readiness.
• Coordinate with building management, service providers, and IS on workplace issues.
• Support the people-facing side of new site readiness alongside the SVP of Operations.
• Maintain office procedures and documentation so processes are repeatable.
• Partner with Facilities Ops Manager to stay current on building operations and maintenance.
• Schedule interviews and coordinate candidate logistics with hiring managers and the external HR partner.
• Execute new-hire onboarding logistics: workspace, equipment, access requests, first-week scheduling, and welcome materials.
• Maintain HR and compliance documentation and personnel records, handling confidential information with strict discretion.
• Support employee programs and recognition activities.
• Plan and execute company events, team gatherings, and all-hands meetings across sites.
• Coordinate logistics for board meetings and investor visits, including catering, materials, and on site arrangements.
• Contribute to a consistent employee experience across all Alta locations.
• This role is evaluated on reliability and on the capacity it creates for others.

Skills

Calendar management

Executive support

Discretion

Communication

Google Workspace / MS 365

Education

Associate or Bachelor’s degree

Tools

Google Workspace

Microsoft 365

ATS platforms

HRIS systems

Job description

Alta Resource Technologies in Boulder, CO is hiring a Sr. Administrative Assistant / Office Manager to support the Office of the CEO.

This high-trust role owns scheduling, travel, workplace operations, and coordination to keep a fast-moving leadership team focused on strategy and execution. With 39 employees today and growth to 50+, you will implement repeatable processes, manage calendars, board logistics, onboarding, and executive communications, while representing Alta professionally to