Brand Copywriter – Part-Time, Freelance

Mozilla

Brand copywriter simplifying complex technology and policy ideas for Mozilla Foundation campaigns. Creating clear, compelling copy across web, email, social, video, and paid channels.

Posted 8/13/2026part-timeRemote • 🇬🇧 United KingdomMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in writing and editing campaign copy across various formats while simplifying complex ideas for diverse audiences. Proven ability to manage projects independently and maintain a consistent voice across multiple campaigns.

Highest-signal resume keywords

5+ Years Writing Brand Or Campaign CopyPortfolio Demonstrating Simplification Of Technical MaterialStrong Editing InstinctsExperience In Advocacy Or Public-Interest CommunicationsFamiliarity With SEO And Performance Copy Basics

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Campaign CopywritingEditingContent SimplificationInterviewing Subject-Matter ExpertsWriting For Global AudiencesExecutive Communications

Soft Skills

Self-DirectedDeadline ManagementCollaboration

Industry Keywords

AI AccountabilityPrivacyOpen InternetPublic-Interest Communications

About the role

Key responsibilities & impact

Write campaign copy across web pages, email, social, video scripts, and paid placements
Collaborate with researchers, fellows, and program leads to translate complex work for general audiences
Take briefs from concept to final copy, including headlines, taglines, and CTAs
Adapt core ideas into multiple formats while preserving the message
Protect the integrity and meaning of source material when simplifying
Maintain a consistent voice across campaigns while allowing each campaign to feel distinct

Requirements

What you’ll need

5+ years writing brand or campaign copy
Portfolio demonstrating simplification of technical or academic source material into readable copy
Comfort interviewing subject-matter experts and pushing back on jargon
Strong editing instincts and ability to distinguish shorter from clearer
Self-directed ability to manage own hours and meet deadlines independently
Interest in AI accountability, privacy, and the open internet
Nice to have: experience in advocacy, campaigning, or public-interest communications
Nice to have: familiarity with SEO and performance copy basics
Nice to have: experience writing for global audiences
Nice to have: experience writing executive communications
Three existing writing samples demonstrating range as a copywriter
Short note explaining how the applicant simplified a difficult idea

Benefits

Comp & perks

Approximately 10-15 hours per week (to begin)
Remote work
Initial 3-month engagement
Competitive day rate, based on experience