542 Online Advertising jobs in Costa Mesa, California

Updated daily. Most recent posting: September 18, 2026.

Social Media Marketing Specialist

The Social Media Content Specialist will manage and execute daily content strategies across Instagram, Facebook, and YouTube Shorts. The role involves creating short-form video and photo content, maintaining a content calendar, and identifying trends to increase brand awareness and engagement....

Irvine, California TP-Link USA Corporation
Development Communications Specialist

The Development Communications Specialist will support institutional fundraising and community engagement through writing, editing, and content strategy. The role involves creating proposals, collateral, and digital content while managing project timelines and cross-functional communication efforts....

Los Angeles, California Cedars-Sinai
Digital Content Marketing Intern (Generative AI)

This internship involves supporting digital content marketing efforts, specifically focusing on Generative Engine Optimization and AI search strategy. The intern will assist with content creation for Google Business Profiles, prompt engineering, and performance analytics across multiple brand accoun...

Brea, California Champions Group Holdings
Forward Deployed Creative Lead

The Forward Deployed Creative Lead will bridge the gap between generative AI technology and enterprise creative production. You will be responsible for directing cinematic AI content, building production workflows, and training creative teams on how to utilize Higgsfield AI tools for commercial proj...

Los Angeles, California Higgsfield AI
Manager / Senior Manager, TikTok Strategy & Innovation - Extended

The Manager of TikTok Strategy & Innovation will lead content strategy, creator partnerships, and social commerce initiatives for a global beauty client. The role involves translating platform trends into actionable marketing concepts and collaborating with cross-functional teams to drive brand rele...

Los Angeles, California CoCreativ
Supervisor, Brand Strategy (Genesis 2026)

The Supervisor of Brand Strategy will lead the development of integrated media strategies and content insights for agency clients. This role involves cross-channel budget planning, client-facing communication, and identifying cultural opportunities to enhance brand relevance across various media pla...

El Segundo , California Canvas Worldwide
Senior Account Executive - Team Omnicom

The Senior Account Executive will drive revenue growth and manage strategic partnerships within the Omnicom Group ecosystem for Teads. The role involves navigating agency trading desks, delivering consultative pitches, and overseeing the commercial lifecycle of digital advertising campaigns across C...

Los Angeles, California Teads
US Marketing Manager - Aesthetics & Reconstruction

Johnson & Johnson is seeking a US Marketing Manager to lead strategic marketing initiatives for their Aesthetics and Reconstruction business. The role involves developing deep customer connections with healthcare professionals and patients to drive brand advocacy and engagement....

Irvine, California Johnson & Johnson
Retail Specialist and Marketing Coordinator

This position manages the day-to-day retail operations of a school store while simultaneously supporting the marketing and communications department. The role involves website updates, social media management, and print and digital production to support school-wide marketing initiatives....

Orange, California Orange Lutheran High School
Marketing Specialist | Hourly - Tuttle Click Hyundai

The Marketing Specialist will manage digital vehicle merchandising, social media channels, and online advertising campaigns for an automotive group. Responsibilities include creating digital assets, coordinating content, and analyzing marketing performance to drive customer engagement and dealership...

Irvine, California Gee Automotive
Communications Specialist

The Communications Specialist will manage digital platforms, create internal and external content, and support district-wide messaging. The role requires skills in email marketing, web content management, and graphic design to engage district stakeholders....

Lake Forest, California Lake Forest School Districts 67 & 115
Associate Director, Social Media Activation

The Associate Director of Social Media Activation provides strategic leadership and operational oversight for paid social media campaigns. This role involves managing client relationships, mentoring team members, and ensuring the quality and performance of social media initiatives....

Los Angeles, Georgia WPP Media
Temporary Marketing Associate - Industrial Color Extended

The Temporary Marketing Associate will support a global beauty client by assisting with campaign development, product launches, and marketing operations. Responsibilities include conducting market and influencer research, maintaining marketing calendars, and providing project support to the marketin...

Los Angeles, California CoCreativ
Temp Associate Director, Project Management

The Associate Director of Project Management will lead the end-to-end execution of integrated marketing campaigns for top-tier clients. This role involves managing project lifecycles, coordinating cross-functional teams, and ensuring that all digital, content, and print deliverables align with clien...

Los Angeles, California Monks
Associate Director, Data Logistics

The Associate Director of Data Logistics will manage data taxonomy, governance, and marketing technology integrations for a media agency. This role involves ensuring data quality across ad servers and analytics platforms like GA4 to support effective campaign measurement and reporting....

El Segundo , California Canvas Worldwide
Art Supervisor

The Art Supervisor is responsible for the creative development and oversight of multi-channel advertising campaigns. This role involves hands-on design work, managing creative projects, and collaborating with copy and account teams to meet client objectives....

Irvine, California AbbVie
Associate Director, Paid Social

The Associate Director of Paid Social will lead the strategic development and execution of cross-channel biddable media programs, including paid social and programmatic advertising. This role involves serving as the primary client lead, managing campaign performance, and mentoring a team of media pr...

Los Angeles, New York WPP Media
Marketing Coordinator, Promotions

The Marketing Coordinator for Promotions will manage and execute consumer-facing promotional campaigns for the Allergan Aesthetics portfolio. This role involves collaborating with brand teams, agencies, and internal stakeholders to ensure promotional assets are developed, approved, and reported on e...

Irvine, California AbbVie
Paid Search Delivery Lead, Media Operations

The Paid Search Delivery Lead is responsible for the end-to-end management, strategy, and execution of paid search campaigns. This role involves hands-on platform activation, client relationship management, and collaborating with internal teams to ensure high-quality campaign delivery....

Los Angeles, California Monks
Advertising Coordinator (LA Times Studios)

The Advertising Coordinator will manage the planning, trafficking, and execution of advertising campaigns across print, digital, and social platforms. This role acts as a liaison between sales, creative teams, and clients to ensure campaign deliverables are met on time and performance metrics are tr...

El Segundo , California The L.A. Times Studios
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