Social Media Manager in London

Want to work for a disruptive social-first marketing agency in the heart of London? re:act was founded by two global FMCG marketers with experience in Health & Beauty, Gaming, Food & Drink and Technology. Since 2019, re:act marketing has grown from a team of 2 to now over 40 employees. We are a social-first agency that truly believes in developing content that means something to consumers. Brands are no longer defined by what they say about themselves, but by what real people say about them. Our agency creates unique moments that matter to the consumer, allowing brands to own conversations in a creative and engaging manner.

We're looking for a Social Media Manager with significant, provable experience running successful TikTok accounts, to lead social-first thinking for some of the most exciting brands. You'll mentor a small team of Social Media Executives, help shape channel strategy, and create work that genuinely cuts through in culture. If you understand how drinks, beauty & lifestyle brands show up in culture, can spot trends before they peak, and know how to turn social insight into standout creative, this role offers the opportunity to make a real impact.

You’ll work closely with the members of the Social Team and cross-functional teams to deliver social strategies, creator partnerships and content that drives measurable results for our clients.

• Line Management & Development: Mentor, support and develop a high-performing team of Social Media Executives, creating an environment where creativity, collaboration and accountability thrive. Act as a positive role model within the team, supporting the development of future managers through coaching, feedback and guidance. Foster a culture of curiosity and continuous learning, encouraging the team to stay ahead of emerging social platforms, tools and trends. Support team wellbeing and professional development while maintaining high performance standards. Build strong internal partnerships across creative, strategy and client teams to deliver best-in-class social work.
• Social Content, Strategy & Creative Thinking: Work with the Social Lead to develop and lead social-first strategies for drinks, beauty & lifestyle brands, ensuring content is platform-native, culturally relevant and creatively ambitious. Identify opportunities for brands to participate authentically in culture, from trending moments to creator collaborations. Develop innovative content ideas designed for platforms such as TikTok, Instagram, and emerging social channels. Turn ideas into reality through scripting concepts, self-shooting content, editing quick short form videos and/or collaborating with the team to bring to life. Champion a social-first mindset across the agency, sharing insight, trends and best practice with colleagues. Stay closely connected to online culture, creators and the drinks category, translating insight into impactful social content.
• Client & Account Management: Act as a key point of contact for clients on social media delivery and strategy. Oversee the day-to-day running of social channels for leading FMCG brands. Build strong and trusted client relationships, confidently presenting ideas, strategies and results. Support planning and delivery of monthly social content calendars and campaigns. Manage creator, influencer and UGC partnerships where required.
• Project Management & Delivery: Own project timelines and ensure social deliverables are planned, prioritised and delivered on schedule. Manage multiple campaigns and content streams simultaneously while maintaining exceptional quality standards. Work closely with internal teams to coordinate content production, approvals and publishing. Upload, schedule and optimise content across platforms using agency tools and native publishing platforms. Ensure social documentation, calendars and planning materials remain accurate and up to date.
• Performance & Reporting: Take a data-driven approach to social media performance, using insights to continuously improve strategy and creative output for your brands. Monitor platform performance and key KPIs including engagement, reach, community growth and cultural impact. Deliver regular reporting and performance analysis for internal teams and clients, including competitor and industry insights. Use analytics tools to evaluate campaign effectiveness and identify opportunities for optimisation.

• Your must-haves: Proven experience managing social media accounts within an agency or brand environment, with FMCG experience and especially TikTok accounts. Strong content creation skills: confidence and proficiency in filming and editing videos to bring your social ideas to life. A strong understanding of social-first creative and platform behaviour, particularly across TikTok and Instagram. Experience working with creator marketing and influencer partnerships. Demonstrable success growing social channels and delivering strong engagement and audience growth. Confidence managing multiple stakeholders and presenting work to clients. A collaborative approach and the ability to bring energy and clarity to a team environment. Excellent written communication and storytelling skills. Strong organisational and prioritisation skills, with the ability to manage multiple deadlines. Curiosity about culture, trends, creators and how brands can authentically participate in conversations online.
• Experience & Skills: Experience managing and/or mentoring junior team members. Hands-on experience managing brand channels across TikTok, Instagram and Meta platforms. Strong understanding of social analytics and reporting, including experience with platforms such as Brandwatch, Emplifi or similar tools. Experience delivering social-first content strategies and campaigns. Comfortable working in a fast-paced agency environment where priorities can evolve quickly.

• Annual & New Business Bonus Schemes
• Up to 29 days leave + bank holidays
• Summer hours
• Free breakfast & refreshments
• Company pension scheme
• Cycle to Work scheme
• Enhanced family friendly benefits
• A warm, supportive team & a dog-friendly office

We’re committed to building a diverse and inclusive workplace. Applications are welcomed from people of all backgrounds, experiences and perspectives. If you’re excited about this role but don’t meet every requirement, we still encourage you to apply.