Manager, Social Media

Join the Manager, Social Media role at Arcellx
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Arcellx is a public, clinical‑stage biotechnology company reimagining cell therapy by engineering innovative immunotherapies for patients with cancer and other incurable diseases. We believe that cell therapies are a forward pillar of medicine and our mission is to destroy cancer and advance humanity by developing safer, more effective, and more broadly accessible cell therapies.

The Manager, Social Media is a creative and thoughtful communications professional who will focus on elevating and amplifying Arcellx’s corporate and executive thought leadership through social media channels.

• Develop editorial strategies, curate content, maintain a content calendar, manage reviews, schedule, distribute, and measure performance across all external platforms including graphics, videos, infographics, and long‑form articles.
• Manage all external digital platforms such as Linked In, X, and Glassdoor, ensuring they reflect the latest company developments, research updates, clinical trials, investor relations content, and other corporate information.
• Collaborate with cross‑functional teams to create fresh, engaging content that represents the company’s innovations and achievements.
• Craft compelling storytelling that engages audiences internally and externally, and creates a unique point of view for topics relevant to the executive team, company, and members.

• Bachelor’s degree and at least 3+ years of related experience in journalism, digital media, public relations, in‑house, or agency roles; biotechnology or pharmaceutical experience highly preferred.
• Proven experience and growth on multiple online channels (You Tube, Linked In, X, mobile devices).
• Strong attention to detail, project management, copy editing, and a solid understanding of multimedia and visual storytelling.
• Ability to take feedback and adapt content quickly in a fast‑paced environment.
• Capacity to translate complex scientific concepts into engaging content.

The base salary range for this position is $120,000 – $160,000 per year, with an annual bonus tied to company goals and an equity (RSU) grant. Relocation assistance is also offered if required.

Benefits include 100% coverage for medical, dental and vision for team members and dependents, unlimited vacation, a 3‑day weekend every month, fully paid parental leave up to 6 months, tuition reimbursement, 401(k) employer contribution, and more.

Join us in our quest to reimagine cell therapy and destroy cancer. For more on our technology, culture, and team, visit .