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Mobile Networking Engineer

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🚀 About Flipster
Flipster() is a high-performance crypto perpetuals trading platform on a mission to create the most efficient, frictionless, and high-performance trading experience.
Engineered by traders and optimized for trading, Flipster combines zero spreads, instant execution, and capital efficiency to deliver a platform where performance is the product.
Operating globally and serving users in nearly 200 countries, Flipster is built for crypto traders who demand the ultimate perpetual trading experience — from active retail users to degens to seasoned pros — while maintaining the highest standards of compliance and security.

About this role

We're hiring a mobile networking specialist based in mainland China to own the SDK-level connectivity layer for our iOS and Android apps in the region. This is an engineering role focused on transport-layer logic, connection management, and client-side resilience strategies for users in challenging network environments.

Required experience

  • 4+ years of mobile SDK development on iOS or Android (both preferred) with significant time spent on the networking layer
  • Direct hands-on experience shipping apps to mainland China users with measurable reliability improvements you can describe
  • Strong understanding of TLS, TCP behavior, and modern transport protocols (HTTP/2, HTTP/3, QUIC, WebSocket)
  • Comfortable with Wireshark, tcpdump, Charles, and platform-specific network debugging tools
  • Based in mainland China and able to test directly against real regional network conditions

    • Preferred

  • Experience at fintech, exchange, streaming, or gaming companies with mainland China users
  • Familiarity with native networking stacks (NSURLSession, OkHttp, Cronet) and how to customize them
  • Background in protocol design or transport-layer optimization

    • Hiring process

  • CV/Resume submission
  • 1st round interview
  • 2nd round interview
    • What you'll have access to

      A real, hard, well-resourced problem. A team that respects deep network expertise. Autonomy on architecture and protocol decisions. Direct impact on user experience for our entire mainland China user base.
    Show

    What this application asks

    lever

    Resume/CV, Full name, Email, Phone, Current location, Current company, LinkedIn URL, GitHub URL, Portfolio URL, Other website

    • Besides English, what other languages are you proficient in speaking
    • By providing us with your personal data, you agree to the the terms of the respective personal data protection policies of each Presto Group member, and you consent to our collection, use, transfer, and disclosure of your personal data on these terms. yes / no · optional
    • Applicant Privacy Consent - By submitting an application, you consent to the collection, processing, use, disclosure, storage and transfer of the following personal data relating to you by us, our affiliates, and our third-party vendors for recruitment and related employment purposes: (i) your general information and contact information, rĂ©sumĂ©/CV, and supporting documents (such as a copy of your passport or national ID); (ii) information provided during the interview (including video/audio recordings, if any); (iii) information obtained through the use of ID verification software, deepfake detection software, and other video conferencing platform tools or integrations; and (iv) information obtained through identity verification, background checks, reference checks, and employment/education verification. Your personal data may be transferred to and processed in countries where we, our affiliate or third-party vendors operate. Appropriate safeguards will be used to protect your personal data in accordance with our Privacy Policy which explains how we manage, protect, and retain your personal data. By clicking “I Agree”, you confirm that: (1) you have read and understood this Privacy Consent and our Privacy Policy; (2) You consent to the collection, processing, use, disclosure, storage and transfer of your abovementioned personal data for recruitment and employment purposes; (3) you understand that you may withdraw your consent at any time by contacting us at the contact provided in our Privacy Policy. yes / no · optional
    • How well do you speak and write in Chinese? choose one

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