Sr. Administrative Assistant / Office Manager, Office of the CEO

Own calendar management for the CEO, and for VPs and C-suite leaders as needed

Schedule and reschedule against shifting priorities, 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 and contingency planning

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 company’s 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

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

What Success Looks Like

This role is evaluated on reliability and on the capacity it creates for others. Within the first year:

Executive scheduling runs without escalation; conflicts are resolved at this level rather than passed upward

Travel and expense administration is fully owned, with reimbursements and reconciliations current

Office and workplace operations run on documented, repeatable processes rather than institutional memory

Onboarding logistics are complete before every new hire’s first day

Board and investor visit logistics execute without leadership involvement in the details

Executive administrative and workplace volume no longer sits with the Chief of Staff

Growth Path

This position is the first dedicated hire in the Office of the CEO and sits at Level 3 on the G&A Admin track. As Alta scales past 50 employees and across multiple facilities, the scope of this role is expected to grow toward executive support for additional leaders and project coordination work, with a defined path along the Admin track toward Executive Assistant (Level 5) and Sr. Executive Assistant (Level 6). Strong performers may also move laterally into the Strategy & Execution track.

Required Qualifications

Associate’s or Bachelor’s degree, or equivalent experience

Three to five years of administrative, executive support, or office operations experience, ideally in a startup or high-growth environment

Demonstrated ability to manage complex calendars and competing priorities for senior stakeholders

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 without reminders

Drives tasks and projects to full completion, following up repeatedly and closing gaps in information, timing, or direction without being asked twice

Comfortable working independently and confidently making judgment calls in ambiguous situations

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, VIP or investor visits, and time-sensitive requests from the CEO or President

U.S. citizenship and valid passport required

Preferred Qualifications

3-5 years in Office Manager, Administrative Assistant, Executive Assistant, or similar role

Associate’s or Bachelor’s Degree

Experience supporting a C-level executive or executive team

Experience coordinating board meetings, investor visits, or company events

Familiarity with ATS platforms, HRIS systems, or onboarding coordination

Experience in a multi-site organization

Exposure to project or execution tracking tools such as Jira, Asana, or Notion Compensation & Benefits

The starting pay range for this position is $80,000-$95,000, commensurate with educational background and work experience.

Benefits include:

401(K)

Medical, Dental, Vision plans (or equivalent)

Flexible Time Off

Paid Parental Leave

Paid Sick Leave

Company Holidays

Alta Resource Technologies is an equal opportunity employer committed to building a workforce that reflects the diversity of the communities we serve. We believe that varied perspectives, experiences, and backgrounds strengthen our team and drive better outcomes for our clients and partners.

We welcome and encourage applications from all qualified individuals regardless of race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by law. Our hiring decisions are based solely on qualifications, merit, and the needs of the business. Alta participates in e-Verify for all positions.

If you require accommodations at any point in the hiring process, please let your recruiter know.

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