Senior Account Manager in London

re:act is a disruptive digital marketing agency based in London, founded by two global FMCG marketers. Since 2019, re:act has grown from a team of 2 to over 40 employees, working with blue-chip clients across multiple sectors. We are a creative content agency that believes in developing meaningful content for consumers.

We are looking for a sharp, confident and delivery-led Senior Account Manager to join our team and lead one of our most fast-paced and high-profile accounts—a global FMCG drinks brand. This role requires someone who has experience running multiple social workstreams, partnering closely with creative and strategy teams, and navigating the pressures of short deadlines and high expectations.

Responsibilities:

• Act as the day-to-day client lead, managing relationships across brand, social and community teams.
• Translate client briefs and business needs into clear, actionable workstreams across paid, organic and influencer social.
• Collaborate closely with strategy, creative and influencer teams to ensure impactful and executable social-first ideas.
• Present work, performance and insights with confidence and clarity.
• Identify potential roadblocks early and proactively solve them.
• Monitor trends, competitor activity and platform updates.

Project & Content Delivery:

• Oversee day-to-day delivery of content calendars, paid social activations, community-led campaigns and influencer partnerships.
• Lead content planning, timeline management, stakeholder reviews and approval workflows.
• Ensure content is delivered accurately, on time and to spec.
• Manage client feedback and amends with care and clarity.
• Work closely with producers and creatives to align on deliverables and deadlines.
• Support the creation of performance reports and insights.
• Mentor junior team members, helping them grow in confidence and quality.
• Set the tone for high-quality account delivery without compromising on relationships.
• Act as the connective tissue between departments.
• Champion a positive, proactive culture within your account team.

Commercial & Operational Management:

• Own scopes of work, timelines and budget trackers across all social deliverables.
• Ensure all projects are delivered within scope and timelines.
• Track time, reconcile budgets, and ensure accurate forecasting.
• Manage third-party partners or talent with commercial rigour.

What We’re Looking For:

• Significant experience in a social-first agency environment at SAM level.
• Direct experience leading always-on social delivery across FMCG or lifestyle brands.
• Strong understanding of social content planning and production workflows.
• Highly organised and detail-oriented, with a reputation for meeting deadlines.
• Calm and confident under pressure, with strong instincts and great judgement.
• Outstanding client communication and relationship-building skills.
• Confident managing scopes, timelines, approvals and budgets.
• A real pride in doing things well.

This is a senior-level delivery role within a fast-paced, social-first agency environment. Candidates whose experience is primarily in-house or limited to a single social brand or project will not be considered.

Why Join Us? This is a high-impact role on a flagship FMCG brand, working with a smart, supportive team in a genuinely fast-paced environment. You’ll be trusted, stretched and supported—with the freedom to do great work and the structure to grow.

What You’ll Get:

• Annual & new business bonus schemes
• Up to 29 days leave + bank holidays
• Summer hours
• Free breakfast & refreshments
• Dog-friendly office