Senior Executive Assistant

ILLUSTRATIVE MATHEMATICS • Full-time • Remote (United States) • $90k - $104k / year • 1d ago

Job Title: Senior Executive Assistant
Pay Rate: $90,000 - $104,000 / year
Employment Type: Regular, full-time
Location: Remote - U.S. location required
Reports To: Chief Executive Officer

Job Posting Close: 10/13/2025, 7:00pm EST

About Us

Illustrative Mathematics is dedicated to creating a world where all learners know, use, and enjoy mathematics. As a problem-based curriculum developer, we foster equity and deep understanding in math education through high-quality materials and professional learning. Our collaborative and mission-driven environment supports innovative thinkers who are passionate about transforming math education.

Position Overview

The Senior Executive Assistant provides high-level administrative support to the CEO. They manage complex calendars, prepare expense reports, conduct research, prepare various documents and presentations, act as a liaison between the CEO, internal, and external partners, and provide thought partnership. This role also oversees administrative support for other members of the senior leadership team (SLT).

Key Responsibilities

Act as liaison and primary point of contact for the CEO, managing communications and filtering inquiries as directed.
Help align the CEO’s day-to-day activities with big-picture organizational priorities.
Manage complex calendars, meetings, and travel for the CEO.
Ensure smooth execution of leadership meetings, retreats, and special events.
Arrange or coordinate all aspects of travel, including flights, accommodations, meeting spaces, supplies, meals, and ground transportation for the CEO and other applicable participants as requested.
Read, research, collect, and analyze information for the CEO as needed.
Draft, edit, and prepare communications, presentations, and reports.
Handle highly confidential information as needed by limiting its access to others and by following established policies and procedures.
Oversee the capture, organization, and distribution of SLT meeting agendas, notes, and follow-ups.
Represent the CEO and the SLT with professionalism, discretion, and reliability.
Support cross-team collaboration and alignment with the organization’s mission and values.
Oversee administrative support for the SLT as needed by its members.
Lead and manage employees by setting goals, providing guidance and support, and ensuring they have the resources that they need to be successful.
Provide evaluative feedback, recognition, and coaching to foster professional growth.
Resolve conflicts proactively, facilitating constructive dialogue and implementing solutions.
Travel as needed and adjust personal and work schedules to accommodate business-related travel.

Qualifications and Skills

Required

5+ years of related experience required in working in an executive assistant role supporting C-Level executives.
Ability to handle confidential information with discretion.
Advanced Proficiency in Google Workspace (Gmail, Calendar, Drive, Docs, Sheets, Slides, Forms) and a willingness to learn new technologies and systems.
Excellent note taking and editing skills.
Excellent written and verbal communication skills.
A positive mindset and attitude to continuously support the organization to accomplish its mission.
Strong time-management skills and an ability to organize and coordinate multiple concurrent projects.
Must reside in and be legally authorized to work in the USA

Preferred

Experience working in a completely remote work environment.
Experience using project management software, such as Asana, to manage projects and tasks.
Experience using Concur to book travel and create expense reports.
Strong computer skills with cloud-based systems, especially Google Workspace applications, Asana, Notion, Zoom, and Slack.

What We Value

At Illustrative Mathematics, we are committed to making a lasting impact through our work. We value a supportive, mission-driven culture where our shared purpose guides us. We take responsibility for the quality and impact of our work. We build trust through meaningful relationships, shared purpose, and inclusive collaboration. We embrace change, creativity, and continuous learning to meet evolving needs.

Our Benefits

In addition to competitive pay, we offer a robust and wide array of benefits to our employees. Here are the highlights:

Fully remote work environment. Everyone works from home!
Flexible work schedules within our Monday-Friday work week.
Flexible paid time off.
Closed for 10 company-recognized holidays, plus Winter Break
Competitive compensation and benefits package
- 403(b) retirement plan with matching employer contribution after 90 days of employment.
- Allowances for internet, phone, wellness, and professional development expenses.
- Three medical insurance plans to choose from, plus dental and vision plans.
- Employer-paid Life & AD&D Insurance, and Voluntary Life & AD&D
- Employer-paid short-term and long-term disability insurance.
- Voluntary accident, critical illness, and hospital indemnity insurance plans are available.

Please complete all areas that are indicated as required (*) on the application. Incomplete applications will not be considered.

Illustrative Mathematics is an independent 501(c)(3) nonprofit organization and does not discriminate against any applicant, candidate, or staff member on the basis of actual or perceived ancestry, age, color, disability, gender, gender identity, gender expression, nationality, race or ethnicity, religion, sex, sexual orientation, or association with a person or group with one or more of these actual or perceived characteristics.

Applicant Workplace Posters

In compliance with federal law, all persons hired for employee roles will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

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