Senior iOS Software Engineer

Flipster – Engineering /
Full-time /
🚀 About Flipster
Flipster( is a next-level trading platform that is connecting investors to insight, and new opportunities brewing in the cryptoverse. We uncover exclusive opportunities and provide a high-performance platform to put them to work. We believe in an exciting, bold future for crypto. A decentralized, well-governed space, that sparks progress for investors, traders and amazingly innovative crypto projects simultaneously. Flipster will unlock access to ideas we can't even imagine yet. We aim to propel their development and uncover potential.

As a Senior iOS Software Engineer at Flipster
Recently, we have taken a huge challenge and made it into our mission: To create a cryptocurrency-based derivatives exchange focusing on agility and a wide range of unique trading products. To achieve this, we have built a team of smart, creative and optimistic people and we are still growing! You will design & implement mobile application to bring a delightful, intuitive mobile experience to users.


    • Develop & maintain iOS native app for our exchange.
    • Work together with cross-functional teams to define, design, test, and ship features.
    • Troubleshoot issues, fix bugs and improve application performance & reliability.
    • This is an individual contributor role.


    • Minimum 7 years of iOS Software Engineer experience.
    • Technical ability to design & implement feature intentions into reliable & efficient code.
    • Ability to communicate in English. (at least in written form)
    • Ability to work autonomously in distributed remote teams with asynchronous communication.
    • Enthusiast Apple user who knows what Apple users want with proper aesthetic sense & taste.
    • Excellent programming, design & development skills in Swift.
    • Experience in production for published large-scale commercial apps.
    • Experience in building apps with complicated and performant Apple native UI/UX.
    • Deep understanding of Apple platforms & technologies.
    • Strong interest in soft/firm real-time apps & optimizations for it.


    • Understanding of financial derivatives products, exchange and trading platforms, blockchain, software development and business.
    • Personal projects. (open source code or published apps on AppStore)
    • Interest in Rust.
    • Ability to communicate in Korean.
    • Ability to work during Korea's primary working hours.

Our Tech Stacks

    • All Swift basically.
    • SwiftUI mostly.
    • Elm-like REPL structured.
    • async/await instead of event handling.
    • Actors for concurrency.
    • Modularized with SPM. Packaged in Xcode.
    • Tested by XCTest.
    • Stored in GitHub.
    • Watched by Sentry/DataDog.

Hiring process

    • Resume/CV submission
    • Home Assessment
    • 1st round interview
    • 2nd round interview
    • * Depending on the circumstances, the interview process may change.