Senior Strategy Copywriter

Collier.Simon is an independent, full-service creative agency in the Los Angeles/Hollywood area. We work with our client partners to develop creative solutions that truly move the needle. Clients range from Fortune 500-type household names to up-and-comers across a variety of industries / verticals. We’re in the midst of a tech-powered transformation, using AI to supercharge creativity, not replace it, and we’re looking for curious minds excited to explore AI as a tool to scale, spark, and speed up creativity.

We’re looking for a Senior Copywriter to own the writing across one of our largest and most complex accounts—a high-volume performance marketing client with a deep portfolio of brands, regional markets, and localized creative needs. This is not a “just write what’s on the brief” role. You’ll work at both the brand/campaign level and the executional level, developing strategic messaging platforms and then building the systems to scale them across hundreds of touchpoints. You’ll partner with art directors on concepting, navigate compliance and regulatory requirements, and bring a systems-minded approach to high-volume creative.

We’re also looking for someone who’s AI-forward—not because it’s a buzzword, but because this account demands efficiency at scale. You should be actively using AI tools to accelerate your process, automate repetitive tasks, and scale your output without sacrificing quality. You’ll work closely with our Head of Creative Technology to identify opportunities to automate templated and redundant work.

You Might Be a Fit If You…

• You lead through the quality of your work—shaping creative direction, driving concepting sessions, and setting the standard for what great copy looks like on the account
• You think brand-first, even in a performance and retail-driven environment
• You’re comfortable writing across every format: broadcast, video, audio, OOH, digital, CRM, web, social, and print
• You understand the difference between brand-level messaging, regional campaigns, and localized executions—and can write for all three
• You can navigate brand guidelines, legal and compliance requirements, and offer-driven messaging without losing the creative thread
• You’re a systems thinker who builds frameworks, templates, and modular writing systems that scale
• You’re already using AI tools in your creative workflow—and you can talk about how and why
• You want to concept with art directors, not just fill in copy decks

What You’ll Do

• Own all copywriting for a major client—from brand campaigns to market-level executions
• Develop strategic messaging platforms and adapt them across channels, formats, and tiers (brand, regional, local)
• Write across the full media mix: broadcast scripts, video, audio, OOH, digital display, CRM, web, and social
• Navigate technical writing requirements including offers, legal disclaimers, and compliance language
• Partner with art directors on concepting and campaign development—not just execute against their direction
• Build modular writing frameworks and templates that scale across a large portfolio of brands and markets
• Collaborate with the Head of Creative Technology to identify and automate templated or redundant copy tasks
• Maintain brand consistency across a complex hierarchy of brand guidelines, regional needs, and localized executions

Requirements

• 7+ years of copywriting experience, with significant time in an agency environment
• Strong portfolio demonstrating both brand/campaign-level work and high-volume executional writing
• Experience writing across multiple channels and formats, including broadcast, digital, and direct response
• Comfort with technical writing: offers, legal copy, compliance language, and fine print
• Demonstrated AI proficiency—you’re actively using AI tools to improve your creative process and output
• Systems-minded approach to writing: you build templates, frameworks, and modular content that scale
• Self-directed with strong editorial judgment—you take ownership of the work from concept through delivery
• Excellent collaboration skills, especially with art directors and creative leadership
• Must be available to work standard PST hours

Bonus Points If You…

• Have experience on accounts with multi-brand portfolios, franchise structures, or regional/local marketing hierarchies
• Have worked on large-scale performance marketing accounts with high-volume creative needs
• Can show examples of how you’ve used AI to scale creative output or automate repetitive writing tasks
• Have experience developing content testing frameworks or performance-optimized copy
• Have worked in high-volume production environments with fast turnarounds

What We Offer

• A collaborative, forward-thinking creative culture where craft, experimentation, and systems thinking are all valued
• Fully remote work environment with PST-based hours
• Full-time salary and benefits including healthcare, 401(k), generous PTO, and professional development support

To Apply:

To be considered for this position, please provide a link to your portfolio or website, as well as a cover letter including some background as to why you are interested in working for an advertising agency.

Benefits

Benefits including healthcare, 401K, vacation/PTO policy to be shared in greater detail during the interview process.

Collier.Simon provides equal employment opportunity to all individuals regardless of their race, color, creed, religion, gender, age, sexual orientation, national origin, disability, veteran status, or any other characteristic protected by state, federal, or local law.

Attention Job Seekers: Please be wary of recruitment and hiring scams. Collier.Simon will never ask you to pay an application fee, equipment fee, or to provide any other type of banking information. If you have any concerns about whether the communications you’ve received are legitimate, please don’t hesitate to reach out to us at [email protected].