37 Advertising Assistant Jobs in Cerritos, CA

Updated daily. Most recent posting: October 30, 2026.

Assistant, The Wall Group

Provides administrative and booking support to a business leader and artists at The Wall Group. Responsibilities include managing communications, calendars, booking documents, billing, travel, scheduling, research, and special projects....

Los Angeles, California WME
Assistant Media Planner

The Assistant Media Planner will support the Client Orchestration team by managing campaign flowcharts, budgets, and data research. The role involves assisting with campaign setup, performance reporting, and the preparation of client-facing presentations across various media channels....

Santa Monica, California RPA
Associate, Brand Strategy (2026 Auto)

The Associate, Brand Strategy supports the agency team in developing multimedia media plans and marketing recommendations. The role contributes research, planning, implementation, and stewardship while coordinating workflow, deadlines, and client-brand information....

El Segundo , California Canvas Worldwide
Associate, Brand Strategy (Cal Lotto)

The Associate, Brand Strategy supports multimedia media planning and campaign execution for Cal Lotto. Responsibilities include research and analysis, preparing strategy materials, maintaining budgets, and coordinating campaign approvals and handoffs....

El Segundo , California Canvas Worldwide
Associate, Paid Social (MGM)

The Associate, Paid Social supports paid social and search media campaigns for entertainment clients, including campaign planning, setup, optimization, pacing, and reporting. The role also assists with audience research, campaign quality checks, and post-campaign reconciliation....

El Segundo , California Canvas Worldwide
Assistant Product Manager

The Assistant Product Manager supports BenQ’s consumer projector line, balancing sales forecasting, inventory, and production allocation with product positioning and market analysis. The role also contributes to digital marketing, e-commerce visibility, product launches, and coordination across inte...

Costa Mesa, California BenQ North America
Entry Level Communications Assistant

Supports communications, public relations, and marketing activities by creating and editing press releases, newsletters, social posts, and website content. The role also helps coordinate campaigns and events, monitor media coverage, and maintain communications resources....

Los Angeles, California SharpContra
Sales Assistant

Supports account executives at an outdoor advertising company by preparing client proposals, maps, demographic information, and performance reports. The role assists the sales process for advertising media products rather than handling marketing or agency account management....

Los Angeles, California Clear Channel Outdoor
Junior Associate, Media Planning & Activation

Supports media planning and activation at a digital creative agency, assisting with campaign setup, QA, tracking, reporting, and coordination. The role spans paid social, search, programmatic, video, audio, and other digital and direct media channels....

Culver City, California UNFOLD Agency
Public Relations Assistant

The Public Relations Assistant will support brand awareness initiatives and coordinate outreach activities to strengthen company reputation. The role involves managing external communications, preparing promotional materials, and fostering positive relationships with customers and the public....

Los Angeles, California Zolidco
Communications Assistant- Immediate Start

The Communications Assistant will support company initiatives by preparing materials, coordinating communication activities, and assisting with customer engagement projects. The role focuses on maintaining clear messaging and supporting promotional efforts to strengthen public and customer relations...

Los Angeles, California Zolidco
Assistant Communications Manager – Aviation Infrastructure & Public Outreach

The Assistant Communications Manager will support public outreach and stakeholder engagement for infrastructure projects at LAX. Responsibilities include drafting construction notices, managing public inquiries, and coordinating community meetings to keep stakeholders informed....

El Segundo , California Consertus
Marketing Assistant

The Marketing Assistant will support promotional activities, prepare marketing materials, and assist with customer-facing brand initiatives. The role involves coordinating team resources, gathering customer feedback, and contributing to the execution of marketing campaigns....

Los Angeles, California Lorygen Group
Marketing Associate - Industrial Color Extended

Industrial Color is seeking a temporary Marketing Associate to support a global beauty client with campaign development, trend research, and project management. The role involves tracking social media trends, managing marketing calendars, and coordinating product samples for marketing initiatives....

Los Angeles, California CoCreativ
PR Assistant, Content (Film, TV, Streaming, Entertainment)

This role is an entry-level public relations assistant position at a communications agency specializing in entertainment. The assistant will support the team by managing media lists, conducting research, and monitoring industry news for film and television clients....

Remote (Los Angeles, California) Sunshine Sachs Morgan & Lylis
Social Media & Content Assistant

This is a part-time, entry-level / early-career opportunity for someone who understands social media, short-form content, visual presentation, and how platforms like TikTok and Instagram work. I'm looking for someone who can help turn ideas into actual posts, assist with getting content published co...

Los Angeles, California DSOTD
Assistant Brand Manager

The Assistant Brand Manager will support the development and execution of marketing campaigns, brand initiatives, and customer retention strategies. This role involves cross-functional collaboration to manage project timelines, analyze performance metrics, and ensure consistent brand messaging acros...

El Segundo , California Golden Pet Brands
Student Social Media Assistant

The Student Social Media Assistant will support the Wilkinson College Dean's Office by creating, scheduling, and publishing content across social media platforms. The role focuses on promoting college events and initiatives while helping to develop campaigns to engage students, alumni, and faculty....

Orange, California Chapman University
Strategic Partner Development Lead, Ad Platforms

Note: By applying to this position you will have an opportunity to share your preferred working location from the following: Mountain View, CA, USA; New York, NY, USA; San Francisco, CA, USA; Los Angeles, CA, USA. Experience managing agreements or partnerships. Experience with partner management or ...

Los Angeles, California Google
Fall Internship, Influencer & Celebrity Relations

BPCM is seeking an intern to support their influencer and celebrity relations team in Los Angeles. The role involves monitoring media coverage, managing influencer gifting and samples, and assisting with the execution of PR campaigns and events....

WEST HOLLYWOOD, California BPCM
Job Types
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