Mobile Developer

London, UK – hybrid or remote
Expected start date: Q1 2022
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As part of our core engineering team you will develop, test, and review code for our main product – a high performance sensor graph – in order to improve performance, add new features and sensors, and develop demonstration applications. Being confident with concurrency, meticulous with memory, and passionate about performance will see you do well here!

Why You Want This Position

Implementing the latest advances in edge computing and machine learning, challenging engineering problems, dedicated research time every week, contributing to patent filings, weekly internal lightning talks, fast-paced, bi-weekly team lunches, opportunity to deliver impact on a massive scale.

Key Responsibilities

  • Maintain and improve our SDKs for smartphones/watches
  • Facilitate the operation of the machine learning core in a power and memory efficient manner
  • Invent novel ways to use sensor data to detect different user contexts
  • Develop manual and automated test plans
  • Participate in customer meetings and design software with the team to fit their needs
  • Maintain/develop demo apps for prospective customers
  • Peer-review code for all our codebases


  • A strong core of C++ and the standard template library (C++11 onwards, specifically RAII concepts such as std::shared_ptr) (required)
  • Android development experience (preferred)
  • Interest and experience in machine learning (optional)
  • A good understanding of UNIX environments, i.e. the terminal (optional)


50,000-80,000 per year (based on experience), no equity

What We Do

We develop mobile SDKs to intelligently sense the phone’s environment, and transform raw sensor data into meaningful insights and user behaviour – we perform predictions on-device to avoid risk to user privacy and anonymity.

Our customers include digital audio, mobile advertising and mobile gaming. They use our product to personalise ads and content recommendations (music, podcast, game in-app purchase optimisation), without compromising privacy.

About Us

We have a culture of knowledge sharing, candid feedback, self-organisation, occasional (COVID-permitting) team meetups, and humour! Our team is a very closely-knit unit that has been carefully built over the years. We are ex-Apple, Palm, IBM, Disney, Wargaming, Warner Music, Activision, Imperial, Cambridge.

We’re committed to building an inclusive work environment where all team members feel welcomed as their authentic selves—inclusive of all genders, sexual orientations, ethnicities, races, education, ages, or other personal characteristics.

We’re currently working from home but will be moving to a hybrid setup in the next few months. That said, we welcome remote colleagues.

Make sure to take a look at the benefits we offer on our careers page.

Our Leadership Principles

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

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