Join the core team to design and ship a universal mobile wallet (BTC + EVM), integrate it into our main app via WebView or TWA, deliver secure seed phrase storage, dApp connectivity, and future multi-chain support, with a clean, native-feeling UI focused on Web3 UX.

Responsibilities:

• Build and maintain a production Flutter app for iOS and Android
  • Design wallet architecture and the integration with the main app
  • Implement Web3 stack — BIP-39, HD wallets, WalletConnect, bitcoinflutter, web3dart
  • Connect analytics, Firebase, push notifications, and secure storage
  • Optimize UX, micro-interactions, and performance with a product mindset
  • Own releases, CI/CD, builds, and testing
• Tech we use
  Flutter, Dart, Bloc or Riverpod, REST, WebSockets, Firebase, Secure Storage or Keychain/Keystore, WalletConnect, bitcoinflutter, web3dart, BIP-32/39/44, WebView or TWA

• 2+ years of Flutter experience
• Strong Dart and architecture skills — Bloc, Riverpod, Provider or MVC
• Published apps in App Store or Google Play
• Confident with REST APIs and WebSockets
• Practical mobile security — keychain, secure storage, biometrics

Able to work autonomously without micromanagement

• Experience in crypto or fintech products
• Web3 integrations — WalletConnect, web3dart or similar, hardware wallets
• HD wallet architecture knowledge — BIP-32/39/44
• Multi-chain wallets — Bitcoin, Ethereum, Tron, etc.
• Embedding Flutter modules in native apps or WebView/TWA integrations
• Strong understanding of Web3 UX and crypto audiences

• Learning support - courses, English classes, and conferences (up to 100% reimbursement)
• Unique loyalty program - receive corporate digital miners and earn passive income with no investment
• Team retreats - company-sponsored stays at a villa in Turkey
• Memorable events with wow prizes - we celebrate big occasions in a big way
• “Employee of the Month” award - we recognize and reward our top performers
• Flexible days off — holidays based on your location + up to 15 sick days + up to 28 vacation days (with fast and automated approvals)
• New career tracks - real opportunities to grow into expert or top management roles
• Work-life fit - flexible hours and remote work. You don’t need to chase balance - here, work is a part of life, not the opposite. We aim to make work inspiring, not exhausting. For us, results matter most.

Apply Now:

GK8 is seeking a Senior Mobile Developer to join our front-end team. In this role, you will work closely with product managers and UI/UX designers to develop the next generation of GK8’s mobile applications for both iOS and Android. You will leverage the latest mobile frameworks and technologies to ensure high performance, scalability, and a seamless user experience. This position requires strong technical expertise, problem-solving skills, and a passion for delivering top-tier mobile applications.

Responsibilities

• Develop and enhance GK8’s mobile applications for iOS.
• Ensure the best performance and user experience of our applications.
• Stay up to date with the latest mobile frameworks and technologies.
• Implement best practices in mobile development, including security and performance optimization.
• Work in an agile environment to meet project goals and timelines.

• 5+ years of experience in native mobile application development for iOS.
• Proficiency in programming languages such as Swift.
• Strong understanding of mobile development best practices, design patterns, and architectures.
• A passion for developing a pixel-perfect user experience.
• Proficiency in Swift, with a willingness to learn Kotlin for Android development.
• Excellent problem-solving, analytical, and communication skills.

• Experience with SwiftUI and/or Jetpack Compose.
• Experience developing using KMM (Kotlin Multiplatform Mobile).
• Familiarity with cryptocurrencies and blockchain technology.
• Willingness to learn Android and Kotlin.

The salary ranges included below will be commensurate with candidate experience, expertise and local market. Final offer amounts are determined by multiple factors, including candidate experience and expertise. At GK8, we maintain a total compensation philosophy which consists of a competitive base salary, annual bonus, and equity incentives.

Salary Range

$130,000 – $160,000 USD

• Competitive base salary and discretionary bonus
• Competitive paid time off
• Company-paid health and protective benefits for employees and their eligible dependents
• Free virtual coaching sessions through Headspace
• Opportunities to learn about the Crypto industry
• Smart, entrepreneurial, and fun colleagues

*Benefits may vary depending on location.

Apply Now:

Echo Base Global is a digital finance company creating an end-to-end crypto ecosystem built on Web3 technology. Echo Base drives interoperability across its products to create an integrated, user-first experience that simplifies the complexity of interacting with digital assets. Est. 2025.

Echo Base seeks to leverage operational and technical synergies across its portfolio companies to drive innovation. Join our engineering team to craft high-performance, mission-critical interfaces that bring OmniWallet to life. As a member of this team, your focus is on delivering seamless, elegant, and secure client experiences across our entire product surface.

What you'll be doing:

• Design, develop, and maintain high-quality mobile applications using React Native and TypeScript.
• Lead architectural decisions and implementation of scalable, performant mobile features.
• Collaborate closely with backend engineers, product managers, and product designers to deliver seamless mobile user experiences across iOS and Android.
• Implement and uphold mobile-specific best practices around performance, navigation, accessibility, and testing.
• Contribute to shared component libraries and mobile design systems.
• Collaborate with other engineers and support code reviews, architecture discussions, and process improvements.
• Optimize application performance, minimize load times, and enhance app responsiveness.
• Integrate third-party web3 services and APIs to extend wallet functionality, such as authentication, transaction insights, connectivity, and blockchain data.

Qualification/Requirements:

• 5+ years of experience in software development, with at least 3+ years focused on React Native.
• Deep knowledge of JavaScript/TypeScript and React Native's core components and APIs.
• Experience building and shipping cross-platform apps for both iOS and Android.
• Familiarity with React Navigation, Redux Toolkit, MobX, or other state management libraries.
• Experience integrating with RESTful APIs and WebSockets.
• Proficiency with mobile testing frameworks (e.g., Detox, Jest, React Native Testing Library).
• Experience working with native modules or bridging native code (iOS/Android) when needed.
• Understanding of mobile UX patterns, accessibility, and responsive design principles.
• Excellent collaboration and communication skills across engineering, design, and product teams.
• Understanding of mobile CI/CD and release pipelines (e.g., Fastlane, EAS, GitHub Actions).
• Familiarity with crypto wallets / DeFi mobile apps.

Nice to have:

• Experience migrating to or working with the new React Native architecture (Fabric/TurboModules).
• Familiarity with OTA update tools like CodePush or Expo EAS.
• Exposure to native iOS/Android development (Swift, Kotlin, Java).
• Contributions to open source or experience with building internal developer tooling.
• Practical experience creating blockchain-enabled apps with real-world usage, such as crypto wallets, DeFi / NFT apps.

Apply Now: