Client Success Executive; Account Executive) Client Success
London, Greater London, W1B, England, UK
Listed on 2026-09-12
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Marketing / Advertising / PR
Client Relationship Management, Digital Marketing
Our Mission:
Activating audience insight through unrivalled human understanding, media execution strategies and sustainable technologies.
Our CompanyOur pioneering technology is a powerful telescope into human understanding, turning billions of disparate audience data points into vibrant and easy to understand insights.
It’s complex data, made actionable for everyone. Unique to us, we join the technologies of audience intelligence and media buying together digitally - within our platform.
We understand the unique value of the individual, which is why we aim to create a company structure that welcomes ideas from everyone. You can read more about our culture and values here.
Your RoleThis is an exciting opportunity to join our Client Success Team at a time of rapid growth. Key aspects of your role include:
Supporting large client accounts and owning some client accounts (including relationship management)
Ensuring the high-quality output of all client communications, presentations, and deliverables from you or your wider team
Supporting the creation of account plans (across insights, strategy, and media planning) tailored to Fifty’s core insights and audience understanding, to achieve the client's goals
Supporting sales on client pitching, proposal writing, and/or presentations
1. Client Relationship Management
Responsibility for client reporting, proposal writing, and communications
Total quality control for all output delivered to you or the teams' clients
Help to develop and shape (with input from your manager, and our insights & strategy teams) media execution strategies and plans
Brief our insights and strategy teams/solutions to ensure they are shaped to your clients' needs
Ensure client dashboards, reporting, and templates are maintained and updated and campaign work is executed internally to the highest standard possible
Monitor and ensure client KPIs are tracked, identify issues early, and work with internal teams to find resolutions
Support the delivery of client reporting, PCAs, QBRs, and any other output-based reporting
1. Requirements
A genuine passion and interest in media advertising
Confidence, humility, calmness, and thoughtfulness
Ability to work well autonomously and independently
High expectations for oneself and one's peers
Brilliant communication skills
Resilience and the ability to face challenges under pressure
Confident in presenting in a consistent, clear, and engaging manner
Ability to juggle multiple stakeholders and meet their challenges
Keen eye for detail, operating withhigh standards of output and setting the bar for internal and external counterparts
At Fifty we...
...Recharge.25 annual leave days + bank holidays
Increased annual leave the longer you've worked with us
Office closure over Christmas
Paid volunteer leave
Matched giving for a fundraising cause
Contributory pension scheme based on level of seniority
Generous and inclusive parental leave and sick pay policies
Individual Learning & Development budgets
A Mac laptop
£100 personal budget for your home working station + a new monitor
Mobile phone contract contributions
Cycle to work scheme
Fifty Thursdays - monthly breakfasts and an early finish with games and drinks
Company-wide quarterly socials
Flexible working arrangements
Work abroad options
Dog friendly office
Access to free counselling through our Employee Assistance Programme
Three 'Duvet Days' in addition to annual leave
Private healthcare
Discounts on gym memberships and spa retreats
For more insight into Fifty culture and office life, you can find us on Instagram.
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