Founding Social Growth Lead

present of AI; San Francisco (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Sixtyfour is seeking a skilled social media writer to own the voice and daily presence on X and LinkedIn. You will craft posts and replies that people share and remember, adapting voice to fit the brand, and running experiments to measure impact.

You will turn real customer stories into authentic narratives, avoiding salesy tones while staying careful with sensitive topics. The ideal candidate writes fast, thinks strategically, and tracks results to continually improve audience engagement.

Qualifications

• A track record of building an audience people follow.
• Ability to write quickly and clearly across posts and replies.
• Experience writing in another person’s voice with consistency.
• Strong brand judgment about what fits and what to skip.
• Experience running experiments and tracking results.
• Ability to turn real customer stories into authentic narratives.

Responsibilities

• Own the voice and daily presence of the company on X and LinkedIn.
• Write posts and replies that are shareable and memorable.
• Run experiments, measure results, and optimize content.
• Translate customer stories into compelling, non-salesy narratives.
• Maintain tone, accuracy, and sensitivity in public dialogue.

Skills

Account growth

Fast writing

Voice impersonation

Brand judgment

Experiment tracking

Storytelling from customer stories

Tools

Scheduling tools

Analytics tools

Job description

This role asks someone to own the voice and daily presence of a company and its CEO on X and LinkedIn, writing posts and replies that people actually share and remember. A strong candidate has built an account people follow, writes fast and well, can write in another person's voice, and has judgment about what fits a brand and what to skip. It also calls for running experiments, tracking results, and turning real customer stories into narratives without sounding like a sales pitch.

How it fits the AI era

AI makes it cheap to produce endless posts, so the value shifts to taste, judgment, and knowing what deserves to be said at all. The role still depends on human writing, humor, and reading a room, plus care with sensitive topics like verifying people and companies. Tools can help with scheduling and measuring, but the angle and the restraint stay human.

How it builds AI experience

Working here means learning to talk about AI agents that investigate people and companies for trust and safety, fraud, and compliance teams, so the writing has to be accurate and careful. That builds skill in explaining AI products plainly and in handling sensitive subject matter. A candidate can prepare by studying how such tools are discussed publicly and by practicing clear, specific posts about real use cases.

Worth showing

• Account you built
• Fast strong writing
• Writing in others voices
• Taste and judgment
• Experiment tracking

This is our own read, written from the employer's posting and the company's Spotlight. The employer's posting is the source of truth for the role.

About Sixtyfour

AI agents that investigate people and companies from a single identifier, for trust and safety, fraud and compliance teams, per the company.