ITRex - AI pioneers who build systems that actually work in the real world, not just in demos. We're 200+ people spread across the US and Europe, creating solutions for companies like P&G and Shutterstock. We keep it simple, build it right, and focus on what works.
We believe in openness, accountability, and having each other's backs. No office politics, no hidden agendas - just people who care about doing good work together and supporting each other to get there.
Your Responsibilities
- Architect, build, and maintain high-performance, scalable React Native applications for iOS and Android
- Lead and mentor a team of React Native developers, providing technical guidance and conducting code reviews
- Collaborate with Product, Design, and Backend teams to define requirements and deliver new features
- Communicate and collaborate with external partners, including banks, SDK vendors, and 3rd-party providers, to support integrations, resolve issues, and ensure technical alignment
- Integrate and maintain third-party SDKs, native modules, and Web3 / crypto libraries
- Implement Web3 functionality, including wallet features, signing, and smart contract interactions
- Ensure secure handling of sensitive data (private keys, seed phrases) and enforce mobile security best practices
- Ensure top-level application performance, responsiveness, and overall app quality
- Identify and resolve performance bottlenecks, defects, and reliability issues
- Implement and maintain comprehensive test coverage (unit, integration, E2E)
- Work with CI / CD pipelines to support automated build, testing, and deployment processes
- Research, evaluate, and introduce new technologies and best practices to improve product quality and development efficiency
- Maintain clear technical documentation and promote knowledge sharing within the team
- Participate in the full application development lifecycle, from initial concept to production deployment
What We're Looking For
React Native & Mobile Development
5+ years of experience in mobile development with a focus on React NativeDeep understanding of React Native architecture, including Fabric and TurboModulesProven ability to architect, build and maintain high-performance, scalable mobile applicationsExpertise in application performance optimization, debugging, and profilingStrong knowledge of TypeScript and experience enforcing strict typing practicesExperience publishing and maintaining apps in App Store and Google PlayBlockchain & Web3
Hands‑on experience in crypto & blockchain development (crypto wallets, signing, transactions)Strong understanding of Web3 technologies : WalletConnect, EVM networks, RPC, smart contract interactionExperience with secure key storage, seed phrase handling, encryption, private key management, and cryptography best practicesExperience integrating complex SDKs / APIs, bridging native iOS / Android SDKs, and working with Web3 / crypto librariesUnderstanding of ERC standards and token metadata structuresLeadership & Processes
Proven technical leadership experience, including mentoring, code reviews, and architectural guidanceAbility to lead and coordinate a team of React Native developersExperience collaborating effectively with Product, Design, and Backend teams to define and deliver featuresStrong communication skills with the ability to clearly articulate technical decisionsExperience working with CI / CD pipelines for mobile applicationsAbility to manage the full development lifecycle : planning, implementation, testing, and deploymentExpertise in identifying, analyzing, and resolving application bottlenecks and performance issuesExperience building and maintaining robust testing strategies (unit, integration, E2E)Ability to research, evaluate, and introduce new technologies and best practicesStrong understanding of mobile security principles, secure data storage, and anti‑fraud mechanismsExperience operating in fast‑paced environments and making informed decisions under uncertaintyEnglish : Upper‑Intermediate or higherBenefits
Remote flexibility
Work where and how you work best – we trust you to deliverFair compensation
Competitive salary + benefits that matter (medical, wellness, learning)Ownership opportunities
See a problem worth solving? Own it. We back smart risks over bureaucratic safetyAI enhancement
We leverage AI to make you faster and stronger – complementing your abilities, not replacing themLearning investment
English classes, professional development, well‑being supportCareer progression
Real paths up, not just sideways shufflingResponsive teammates
No ignored Slacks, no “not my problem” attitudesSupportive culture
When you're stuck, people help. When things break, we fix them togetherHuman connections
Regular meetups, tech talks, and actual relationships beyond workCurious? We are too. Let's talk
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