Software Engineer - Mobile Clients - Contract - iOS & Android


Who We Are

The Magic Pony team works on visual processing and optimisation using state-of-the-art computer vision and machine learning techniques. We are a diverse, inter-disciplinary team  working end-to-end from research to product integration. Our team have backgrounds ranging from theoretical machine learning research to low-level compute optimization on both mobile and server architectures. Our work involves turning our research outcomes into real-world products as well as optimising our technology for the real world. 

What You’ll Do

You will be part of a team of ambitious and talented engineers responsible for delivering high-impact technology into our mobile clients. You will use your creativity and excellent problem solving skills to helping us integrate, measure and optimise new technologies developed by our research team into an app used by millions of people worldwide. You will focus around the media stack, working on our image and video handling and ensure we have reliable and efficient performance in all conditions.

Who You Are

You are a passionate software engineer, who takes pride in your work and looking to solve hard technical problems and do so efficiently, rigorously and reliably. You will have:

  • Passion for high quality performance code and an eye for detail

  • Experience in both iOS and Android

  • Proficiency and understanding of:

    • C/C++

    • Objective-C

    • Java/Android

  • Solid familiarity with the tools: Xcode, Instruments, Android Studio, etc

  • Knowledge of core CS concepts such as data structures, algorithms, profiling and optimisation

  • A detailed approach to writing tests and quality assurance


  • Previous experience developing mobile apps at scale
  • Experience with media playback libraries on mobile (iOS or Android) 
  • BS or MS in Computer Science or equivalent work experience

  • 3+ years experience of large-scale software engineering

    We are committed to an inclusive and diverse Twitter. Twitter is an equal opportunity employer. We do not discriminate based on race, color, ethnicity, ancestry, national origin, religion, sex, gender, gender identity, gender expression, sexual orientation, age, disability, veteran status, genetic information, marital status or any legally protected status.

Engineering Hiring Process

Step 1

Once your application is received, a recruiter will reach out pending your qualifications are a match for the role.

Step 2

If your background is a match, you may have 1-2 technical phone interviews or be given the chance to provide a work sample depending on the role.

Step 3

If the phone interviews go well or your work sample is strong, the final step includes interviews with 5-6 people held onsite in our office.


By applying you expressly make the following representations and warranties and give your consents as described below:
Twitter, Inc. collects your personal data for the purposes of managing Twitter, Inc.’s recruitment related activities as well as for organizational planning purposes globally. Consequently, Twitter, Inc. may use your personal data in relation to the evaluation and selection of applicants including for example setting up and conducting interviews and tests, evaluating and assessing the results thereto and as is otherwise needed in the recruitment processes including the final recruitment. 
Twitter, Inc. does not disclose your personal data to unauthorized third parties. However, as a global corporation consisting of multiple affiliated companies in various countries, Twitter, Inc. has international sites and Twitter, Inc. uses resources located throughout the world. Twitter, Inc. may from time to time also use third parties to act on Twitter, Inc.’s behalf. You agree to the fact that to the extent necessary your personal data may be transferred and/or disclosed to any company within Twitter, Inc. group of companies as well as to third parties acting on Twitter, Inc.’s behalf, including also transfers to servers and databases outside the country where you provided Twitter, Inc. with your personal data. Such transfers may include for example transfers and/or disclosures outside the European Economic Area and in the United States of America.

Personal Information

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Twitter does not accept and unsolicited resumes from recruiting agencies and will not pay fees associated with any such resumes. Agencies, please do not send resumes to any Twitter location, employee, or email address.

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