Executive Assistant, Marketing

Location

California

Los Angeles, California

Hybrid Schedule (M/F remote, T/W/TH in-office)

About

At Magnite, we cultivate an environment of continuous growth and collaboration. Our work impacts what millions of people read, watch, and buy, and we’re looking for people to help us tackle that responsibility with creativity and focus. Magnite (NASDAQ: MGNI) is the world’s largest independent sell-side advertising platform. Publishers use our technology to monetize their content across all screens and formats, including CTV / streaming, online video, display, and audio.

Our tech fuels billions of transactions per day.

The Role

Magnite is seeking an Executive Assistant, Marketing to help keep our Marketing team running smoothly. This role, which reports to the Chief Marketing Officer, combines executive support with hands‑on operational ownership, with a strong focus on team operations. You’ll spend approximately 60% of your time on team operations and 40% on executive support (depending on seasonality).

You’ll be successful in this role if marketing spend is clearly tracked and well‑managed with variances flagged early; vendor and purchasing workflows run on time with minimal rework; and marketing leaders are set up for success with clear agendas, seamless travel coordination, and timely expense reporting.

In This Role You Will

Team Operations Support (approx. 60%)

• Own budget and spend tracking, monitor pacing, and flag variances early for review
• Manage procurement and vendor workflows, including POs, invoices, accruals, and Accounts Payable coordination
• Coordinate logistics for team off‑sites, all‑hands, and events (venue, catering, scheduling) with strong attention to detail
• Support special projects such as quarterly planning logistics, vendor renewals coordination, process improvements, and cross‑functional coordination with People/IT/Finance

Executive and Leadership Support (approx. 40%)

• Manage calendars and meetings across time zones while keeping the team’s operating cadence running smoothly, including leadership and our regular team meetings
• Coordinate travel for marketing leadership, including last‑minute changes
• Manage expense reporting and reconciliation for marketing leadership
• Prepare weekly agendas to help leaders focus on the highest‑impact work

We’re Looking For Someone With

• 2+ years of experience as an Executive Assistant (or similar role) supporting senior leaders (VP/C‑level leaders) in a fast‑paced environment
• Strong operational rigor, with experience owning trackers, workflows, and recurring team cadences (budget/spend, procurement, onboarding, events)
• Proven project coordination skills, with the ability to manage logistics, timelines, and stakeholders for team‑wide initiatives
• Experience with budget tracking, expense reconciliation, and/or procurement tools (e.g., Coupa, Concur, Oracle) is highly preferred
• Highly organized and detail‑oriented, with sound judgment and the ability to prioritize competing requests
• Proactive, solutions‑oriented, and comfortable navigating ambiguity and shifting priorities
• A collaborative, service‑oriented approach with the ability to build strong relationships across People, IT, and Finance
• Proficiency in Google Workspace (Gmail, Docs, Sheets, Slides) and an aptitude for learning internal systems quickly
• High integrity and discretion when handling sensitive information

Perks And Benefits

• Comprehensive Healthcare Coverage from Day One
• Generous Time Off
• Holiday Breaks and Quarterly Wellness Days
• Equity and Employee Stock Purchase Plan
• Family‑Focused Benefits and Parental Leave
• 401k Retirement Savings Plan with Employer Match
• Disability and Life Insurance
• Cell Phone Subsidy
• Fitness and Wellness Reimbursement

Company Culture

We believe collaboration is essential to success. Magnite’s hybrid schedule includes two days worked remotely (Monday and Friday) and three days on‑site (Tuesday, Wednesday, Thursday). Our offices provide catered lunches, beverages, snacks, training and development, and office events to support your work week. We also understand you have appointments, families, hobbies, and other commitments. Magnite strives to maintain a healthy work/life integration for all employees so you can…