Responsibilities

• Develop, execute, and own Castelion's social media strategy across social channels, including X, LinkedIn, YouTube, Instagram, and other priority platforms.
• Plan the editorial calendar for company channels, including announcements, milestones, recruiting content, executive perspective, industry commentary, event coverage, and evergreen brand storytelling.
• Draft, edit, schedule, and publish social content that is technically accurate, visually compelling, and appropriate for defense, policy, customer, investor, and talent audiences.
• Build social-first campaigns around major company announcements, product milestones, test activity, launch activity, executive appearances, industry events, and recruiting priorities.
• Partner with creative, design, video, engineering, and recruiting teams to develop visual assets, short-form video concepts, carousels, explainers, and behind-the-scenes content.
• Support executive social presence, including drafting posts, shaping point of view, identifying timely moments, and translating leadership perspective into credible public commentary.
• Monitor defense, aerospace, technology, policy, competitor, and geopolitical conversations to identify relevant moments for Castelion to engage or avoid.
• Produce concise daily executive media and social brief summarizing relevant coverage, industry developments, competitor activity, social conversation, geopolitical events, and emerging narratives.
• Track channel performance, audience growth, engagement, sentiment, and campaign results, then use those insights to improve content strategy.
• Manage community engagement, comment monitoring, inbound message routing, and escalation workflows.

Requirements

• 4-7 years of experience in social media, strategic communications, public affairs, journalism, defense communications, technology communications, or a related field.
• Demonstrated experience managing brand, founder, executive, or organizational social channels, especially LinkedIn and X.
• Exceptional writing and editing skills, with the ability to craft concise, compelling content under tight deadlines,
• Strong fluency of social media strategy, latest trends, audience engagement, social listening, and performance analytics to iterate and constantly improve.
• Ability to translate technical or complex subject matter into clear, accurate, engaging messaging.
• Clear judgment and discretion under pressure, especially in sensitive or high-visibility communications environments.
• Ability to work directly with senior executives, engineers, military leaders, policymakers, and external partners with professionalism and confidence.
• Strong organizational skills and ability to manage multiple fast-moving priorities simultaneously.
• Interest in U.S. national security, defense innovation, aerospace, manufacturing, and emerging technologies.
• Willingness to travel as needed for events, media opportunities, launches, tests, and industry conferences.

Preferred

• Experience in defense, aerospace, government, Capitol Hill, journalism, public affairs, venture-backed technology, or dual-use technology.
• Experience building or managing executive social media programs.
• Experience using social listening, analytics, scheduling, or reporting tools.
• Experience supporting product launches, test campaigns, major announcements, conferences, or recruiting campaigns.
• Familiarity with defense acquisition, Pentagon structure, national-security policy, venture-backed technology environments, or dual-use technology sectors.
• Relationships with defense, aerospace, technology, policy, business, podcast, or creator-media communities.
• Experience with crisis communications, rapid response, or sensitive issue management.
• Comfort working with creative teams on photography, video, motion graphics, and visual storytelling.
• Familiarity with OPSEC, export-control considerations, classification boundaries, or communications review processes in defense or aerospace environments.

Benefits

• Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.