Lead Mobile Engineer

Back to all rolesLead Mobile EngineerApplyJob detailsDepartments / EngineeringParis, New YorkFull-time$120,000 USD - $220,000 USDJoin a team of engineers and cryptographers building the infrastructure behind the next generation of financial systems.We’re hiring a Lead Mobile Engineer to build the mobile experience of our platform. You’ll design and ship iOS and Android applications, improve our cross-platform architecture, and build interfaces that are fast, intuitive, and reliable. We’re looking for strong expertise in React Native and a sharp eye for product and UX details. You have experience shipping production mobile apps in fintech, blockchain, or other high-reliability environments. You’ll work closely with product, security, and backend teams to turn complex requirements into simple mobile workflows for both administrators and end users. This role includes owning projects end to end, contributing to mobile architecture decisions, and ensuring the mobile stack remains secure, reliable, and easy to build on.ResponsibilitiesLead the design and development of our iOS/Android apps.Own features from idea to launch to iteration.Refine SDKs and cross-platform frameworks for smooth integrations.Bring fintech-grade UX and bank-grade security to mobile wallets.Set high standards for performance, security, and architecture.Partner with product and design to ship features fast.Write clear docs, review code, and mentor teammates.Requirements8+ years in mobile engineering, with experience leading projects.Expert in React Native or native mobile (Swift, Kotlin, etc.).Skilled in cross-platform development and SDKs.Hands-on with WebAuthn, passkeys, and secure authentication.Proven record of shipping mobile apps in fintech or onchain.Strong sense of UX, detail-oriented, and reliable.Clear communicator who thrives in fast-moving teams.Recruiting ProcessIntro call with Co-CEO (30 min)Personality and cognitive tests (45 min)Coding test in a language of your choiceFocus interviews with the hiring panel (180 min)Code reviewArchitecture reviewSecurity fundamentalsCulture check fitFinal interview with CTO (30 min)Reference calls and background checksTermsTitle: Lead Mobile EngineerSalary: $120,000-220,000 per year (full-time)Equity: 100-200 stock options vested over 4 yearsBenefits: Healthcare and travel expensesLocation: US or EU (remote-first, office optional)Equipment: MacBook Pro + essentialsUpload your resume to autofill the applicationUploadFirst name *Last name *Email *Dial codePhone numberLinkedIn profile *Please upload your resume (preferably as a PDF file) *Click or drag file to uploadSupported file format: .PDF; Maximum file size: 10.49 MB; Maximum file: 1;Untitled sectionCover letterYour answer0/10000AI disclaimerThis application process may use AI-enabled systems to support candidate evaluation based on factors such as experience, technical skills, and qualifications. All processing is carried out in accordance with applicable data protection, AI governance, and labour laws. Human oversight is maintained at all stages, and final hiring decisions are made by people. Personal data submitted as part of this application is not used to train AI models.I have read and understood the privacy policy and acknowledge that my personal data will be processed as part of this application.ApplyApplyHire withPrivacy Policy