Mobile Developer

London, UK – hybrid remote/office
Expected start date: Q1 2022
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As part of our core commercial team, you will take control of our customer success management and maximise customer growth. You’ll need to be a problem solver and have excellent people and organisational skills to be successful. Most importantly, you’ll need to fit easily into our open and transparent team culture.

Why You Want This Position

  • Build the customer success operation from the ground up
  • Develop and implement best practices
  • Be a part of a dynamic startup pioneering privacy-first mobile advertising
  • Opportunity to deliver impact and growth on a massive scale

Key Responsibilities

  • Customer stakeholder management
  • Learn the ins and outs of each of your accounts and take ownership of these relationships on a proactive basis
  • Identify growth opportunities and maintain long-term account health and relationships
  • Handle challenging customers and/or situations and suggest possible solutions
  • Drive product adoption and share best practices
  • Manage payment processes
  • Maintain accurate CRM data (we use HubSpot)
  • Software used in this role includes Slack,, and GSuite


  • 4+ years experience in Customer Success Management (CSM)
  • Required: 3+ years experience in digital audio
  • Additional experience in (display) AdTech, mobile gaming, or startups is a plus
  • Excellent written and verbal skills
  • Have in-depth knowledge of SDKs and integrations in mobile
  • Have experience in building a team (2-3 people)
  • Multi-tasker who demonstrates sound judgment
  • Process-oriented with a knack for creative problem solving
  • Enjoy building long term partnerships to influence prospects and customers successfully
  • Have a can-do attitude, happy to take on new challenges, such as supporting BD efforts
  • Natural team player, comfortable working with different opinions and stakeholders


45,000-55,000 per year (based on experience) plus bonus

What We Do

NumberEight transforms raw mobile sensor data into live contextual moments and behavioural audiences, using on-device artificial intelligence to safeguard user privacy and anonymity. Watch the demo here.

Our customers are in digital audio, mobile AdTech, and mobile gaming.

They use our product to serve personalised ads and make content recommendations (products, game in-app purchases, music, etc).

About Us

Diversity, equity & inclusiveness blurb. Remote working. Maybe add covid. See our careers page for benefits.

Our Leadership Principles

Creativity – Friendliness – Resourcefulness – Humility – Openness – Inquisitiveness – Outstanding quality – Humour

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