Copywriter

Responsibilities

• Write donor-facing copy for nonprofit clients, including donation pages, fundraising emails, SMS appeals, and impact-driven landing pages
• Produce paid media ad copy for platforms like Meta, Google, and LinkedIn
• Create landing page copy and headline variants for A/B testing based on specific hypotheses
• Write email and SMS copy for lifecycle and donor journey campaigns
• Rewrite underperforming copy based on test results and analytics
• Build, train, and manage brand-specific AI writing agents using custom prompts and voice calibration files
• Collaborate with growth strategists and designers to execute experimentation roadmaps

Requirements

• 2–4+ years of experience in conversion copywriting, direct-response, or performance marketing
• Proven experience writing for nonprofit or mission-driven organizations
• Demonstrated experience building AI writing agents (e.g., custom GPTs, Claude projects)
• Portfolio showcasing copy written for testing (ads, landing pages, or email campaigns)
• Experience working in an agency or multi-client environment
• Ability to quickly adapt to and write in multiple distinct brand voices

Preferred Qualifications

• Experience with CRO (Conversion Rate Optimization) and hypothesis-driven copywriting
• Proficiency in using AI tools to accelerate drafting and variant generation

About the Company

Cro Metrics is an experiment-led growth marketing agency that partners with mission-driven and high-growth companies to scale through data-driven experimentation. We specialize in A/B testing, personalization, paid media, and full-funnel digital strategy.