Copywriter – Direct Contract

The Copywriter: Conversion & Growth Copy is responsible for producing high-quality, hypothesis-driven copy across Cro Metrics' integrated service lines. You'll write headline variants for A/B tests, landing page copy, email and SMS campaigns, paid media ad copy, and product page rewrites — always grounded in a strategic rationale and designed to be tested. You'll work across B2B, B2C, and nonprofit clients, adapting messaging to audiences that range from enterprise buyers to individual donors to direct consumers.

This role is ideal for a copywriter who thinks in hypotheses, writes for conversion, and can shift between brand voices quickly and confidently — whether that's a nonprofit appeal, a B2B SaaS landing page, or a DTC promo campaign. You won't be writing blog posts or thought leadership — you'll be writing the copy that goes live inside experiments and campaigns, where every word has a measurable impact.

The first 5–10 business days of the engagement are a paid evaluation period. You'll do real client work at your full contract rate. At the end, we'll either continue the engagement, extend the evaluation for a few more days if we need more signal, or end the engagement — and in all three cases, we'll tell you why and pay for all hours worked.

What You'll Do

• Write conversion-focused copy for A/B tests — headline variants, CTA copy, value proposition rewrites, and messaging hierarchy tests — each variant mapped to a clear hypothesis.
• Produce landing page copy from briefs and wireframes, collaborating with designers to ensure messaging and layout work together.
• Write email and SMS copy for lifecycle campaigns (welcome flows, abandoned cart, win-back, promotional sends) within client brand voice guidelines.
• Create paid media ad copy across platforms (Meta, Google, LinkedIn) — headlines, descriptions, and creative copy that drives clicks and conversions.
• Rewrite underperforming copy based on test results and analytics — diagnosing what's not working and proposing data-informed alternatives.
• Adapt quickly to new client brand voices, absorbing voice guides and existing copy to produce on-brand work from the first deliverable.
• Collaborate closely with strategists on hypothesis development — your copy is the execution layer of their experimentation roadmap.
• Manage your workload across multiple concurrent clients and projects, communicating proactively about capacity, timelines, and blockers.
• Use AI tools to accelerate drafting, variant generation, and research — while maintaining the craft, originality, and strategic rigor that make great copy.
• Build, train, and manage brand-specific AI writing agents — creating custom prompts, voice calibration files, and guardrails so AI output stays on-brand for each client. Maintain and iterate on these agents as client voices evolve.
• Write for nonprofit audiences with the same conversion rigor applied to commercial clients — donation pages, fundraising emails, advocacy campaigns, and impact-driven landing pages where the "product" is a mission.
What We're Looking For
• 3–6 years of experience in conversion copywriting, direct-response writing, CRO copy, or performance marketing copy.
• A portfolio demonstrating copy that was written to be tested — headline variants, landing pages, email campaigns, or ad copy with clear strategic framing.
• Ability to write across multiple brand voices quickly and accurately — you can absorb a voice guide and produce on-brand copy on the first pass.
• Strong strategic instinct — you understand why copy converts, not just what sounds good. You think in hypotheses, value propositions, and objection handling.
• Experience writing for digital channels: web (landing pages, PDPs, funnels), email/SMS, and paid media (social and search ads).
• Experience writing for nonprofit or mission-driven organizations — you understand that conversion copywriting for nonprofits means donation optimization, fundraising appeals, and impact framing, not just "awareness."
• Comfort with volume and speed — you can produce multiple variants quickly without sacrificing quality or strategic thinking.
• Clear communication skills — you ask good questions about briefs, flag ambiguity early, and explain your copy rationale to non-writers.
• Advanced AI fluency — beyond using AI as a drafting tool, you can build and manage brand-specific AI writing agents. You know how to create system prompts, calibrate voice, set guardrails, and evaluate AI output quality. You treat AI agents as tools you maintain, not just chat windows you type into.
• Self-directed and reliable — you manage your time well, meet deadlines consistently, and don't need to be micromanaged.
AI is a hard requirement, not a preference.Must Haves
• Experience writing copy for CRO, experimentation, or growth marketing — not just brand or content marketing.
• Experience at an agency or in a multi-client environment where you managed competing priorities and fast turnarounds.
• Familiarity with A/B testing methodology — you understand control vs. variant, statistical significance, and how copy variables are isolated in tests.
• Experience writing email/SMS copy
• Experience writing paid media copy (Meta, Google, LinkedIn) with awareness of character limits, platform specs, and creative best practices.
• Experience writing for nonprofit clients — fundraising campaigns, donation page optimization, advocacy messaging, or grant-related communications.
• Demonstrated experience building AI writing agents — custom GPTs, Claude projects, or similar tools configured with brand voice, tone rules, and output guardrails for specific clients.
• You consistently deliver on-brand, hypothesis-driven copy on time and with minimal revision cycles.