Fifty • London, United Kingdom

Client Success Manager (Account Director)

3 days/week at home

Core hours 10–4

Dog friendly

Job Description

Our Mission

Activating audience insight through unrivalled human understanding, media execution strategies and sustainable technologies.

Our Company

Our 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 Role

This is an exciting opportunity to join our Client Success Team at a time of rapid growth.

Key aspects of your role include:

  • Managing and developing key senior relationships with your clients
  • Identifying and driving new business opportunities through existing or new business relationships
  • Taking ownership of the quality and output of all client communications, presentations, and deliverables to your clients
  • Developing strategic account plans across insights, strategy, and media planning, tailored to Fifty’s core insights and audience understanding, to achieve the client's goals
  • Managing your clients' revenue/gross profit forecasts
  • Supporting our sales teams on client pitches, proposal writing, and creating presentations
  • Coaching or managing more junior client success team members
  • Networking within the marketing and media community in a manner that drives and distinguishes

Please note we will be hiring on a rolling basis for this role so please apply as early as possible.

Your Responsibilities

1. Client Relationship Management

  • Take responsibility for senior client relationships
  • Develop, grow, and retain existing and new revenue streams with your clients
  • Ensure total quality control for all output delivered to your client

2. Strategic Media Development & Planning

  • 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 align with your clients' needs
  • Work with your clients to shape KPIs/measurements of success to meet the client's strategic goals against realistic benchmarks

3. Execution

  • Ensure your clients' plans are executed internally to the highest standard possible
  • Monitor and ensure client KPIs are on track, identifying issues early and working with internal teams to find resolutions
  • Ensure the delivery of client reporting, PCAs, QBRs, and any other output-based reporting

4. Client Profitability

  • Take responsibility for forecasting client revenue and profitability projections for your clients
  • Prepare pricing proposals (using frameworks provided by the CFO), tailored to the client's service requirements
  • Be accountable for ensuring the timely billing, reconciliation, and payment for services to your client

5. Attitude

  • Ensure every client touchpoint is delivered to the highest standards expected of Fifty
  • Inspire, engage, and delight our clients with our outputs
  • Be humble, be kind, and support others in their learning and development

Your Essential Skills

1. Requirements

  • Experience in media advertising, whether working within brands or for providers of media
  • An understanding of the media landscape, communications planning, and the media solutions available in the market (preparing & presenting media plans)
  • Confidence and experience acting in client-facing roles

2. Attributes

  • Confidence, passion, humility, calmness, and thoughtfulness
  • Ability to work well autonomously and independently
  • High expectations for oneself and one's peers
  • A brilliant communicator with a track record of building strong relationships with colleagues and clients
  • Resilience, with the ability to face challenges under pressure

3. Skills

  • Ability to engage, persuade, and influence stakeholders within your client & manage multiple campaigns
  • A wide breadth of knowledge across all digital media channels
  • Experience and adeptness in pushing back or challenging clients (or partner agencies, i.e. creative) to ensure the right results, process, and outcomes are achieved
  • Confidence in presenting in a consistent, clear, and engaging manner
  • Ability to juggle multiple stakeholders and meet their challenges
  • A keen eye for detail, operating with high standards of output and setting the bar for internal and external counterparts

Your Extra Skills

  • Experience using Hubspot, Data Studios, Keynote and Excel (or similar programs)
  • Experience working in scale-ups, or independent media agencies

Our Benefits

At Fifty we...


  • 25 annual leave days + bank holidays
  • Increased annual leave the longer you've worked with us
  • Office closure over Christmas

...Give Back.

  • 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

Work-Life Balance at Fifty


  • 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.

Your Salary

£30,000 - £40,000 + 50% OTE and company-wide bonus

Our Diversity and Inclusion Commitment

At its core, Fifty aims to understand humans better – but this mission doesn’t stop with our technology, it feeds into our internal ethos too. Our belief in the power of human connection has helped us build a workplace where everyone can thrive and succeed. We know that the best work happens when we bring diverse and innovative minds together to work towards a common goal. So if you want to join team Fifty, we can’t wait to hear from you! You can find out more about our commitment to Diversity and Inclusion here.

If you come from a marginalised or underrepresented group, we urge you to apply. We believe that diversity is key to building a strong and innovative team, and we want to ensure that all voices are heard and valued. If you are hesitant to apply because you don't feel you meet every single job requirement, we want to reassure you that we encourage all qualified candidates to apply. We believe that your unique perspective and experiences can bring invaluable insights to our team, and we are committed to providing a supportive and inclusive work environment where everyone can thrive.

If you require additional support, reasonable adjustments or would just like an informal chat about the recruitment process, please reach out to our Senior People Executive at

For the first stage in our recruitment process, your application documents will be anonymised. We therefore ask that you do not include your name or any other identifiable information in the written sections of the application.

Company benefits

Dog friendly office
Open to part-time employees
Work from anywhere scheme
Enhanced sick days
Wellbeing allowance
Adoption leave
Mental health days
Health insurance
Dental coverage
Duvet days
Mental health platform access
Gym membership
Compassionate leave
Enhanced sick pay
Travel credit
Cinema discounts
Accrued annual leave
Time off in-lieu
Religious celebration leave
Paid anniversary break
Enhanced maternity leave
Enhanced paternity leave
Shared parental leave
Pregnancy loss leave
Cycle to work scheme
Salary sacrifice
Annual pay rises
Annual bonus
Volunteer days
Personal development budgets
Charity donation scheme
Employee assistance programme
Skilled worker visas
Employee discounts
Lunch and learns
L&D budget
Enhanced pension match/contribution
Employees are very happy with their working location freedom
Employees are largely happy with the flexibility in the hours they work
Employees are very happy with the benefits their company offers
Work-life balance
Employees feel that they can find the perfect balance of life and work
Role modelling
Employees feel that flexible working is part of the culture
Employees feel they have complete autonomy over getting their work done

Working at Fifty

Company employees


Gender diversity (male:female)


Office locations

London, Farringdon

Hiring Countries

United Kingdom

Awards & Achievements

Most flexible companies

Most flexible companies

Flexa100 2024
Media & Agencies

Media & Agencies

Industry awards 2023

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