Mobile Developer (iOS + Android)

Posted 20 Days Ago
Be an Early Applicant
Hiring Remotely in Portugal
Remote
Senior level
Blockchain • Gaming • Machine Learning • Payments • Database • Web3 • Metaverse
Protofire is a leading blockchain development studio, specializing in decentralized applications (DApps).
The Role
The Mobile Developer will build a consumer mobile app for DeFi credit flows, focusing on seamless onboarding and ensuring high security and UX in collaboration with product and backend teams.
Summary Generated by Built In

Protofire is looking for a Mobile Developer to build a consumer mobile app (iOS + Android) focused on seamless onboarding and DeFi credit flows. You’ll work closely with product and backend teams to deliver an MVP with a strong UX and production-grade security.

Requirements

  • 5+ years of professional mobile development experience
  • Strong experience with iOS and/or Android (native Swift/Kotlin) or cross-platform (React Native / Flutter)
  • Proven experience shipping production mobile apps
  • Solid understanding of wallets, key management, self-custody, and blockchain transaction flows
  • Hands-on experience with EVM / Web3 SDKs, DeFi interactions, signing, and security best practices
  • Comfortable working with APIs, state management, and mobile performance optimization
  • English B2+ (spoken and written)

Nice to have

  • Experience integrating embedded wallet providers (e.g., Privy, Dynamic, Web3Auth, Turnkey)
  • Experience with KYC/card providers and card lifecycle flows
  • Experience building fintech apps (payments, credit, lending)

Top Skills

Android
Defi
Evm
Flutter
iOS
Kotlin
React Native
Swift
Web3
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The Company
San Juan, PR
100 Employees
Year Founded: 2017

What We Do

Protofire is a trusted blockchain development studio that delivers top-notch solutions for decentralized applications (DApps). With a focus on blockchain protocols like Ethereum and Polkadot, Protofire offers a wide range of services, including smart contract development, auditing, token creation, and decentralized finance (DeFi) development. By leveraging their deep knowledge and experience, Protofire enables businesses to navigate the world of blockchain technology and unlock its transformative possibilities.

Why Work With Us

Protofire stands out in the blockchain development landscape for several reasons, making it an attractive company for individuals seeking employment opportunities:

Extensive Expertise. Comprehensive Services. Focus on Innovation. Strong Track Record. Collaborative Culture. Impactful Work.

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