Self-Custody Crypto Wallet• Developed vital wallet features, including key pair handling, multi-chain transactions, and activity history• Processed and aggregated cryptocurrency balances from multiple chains, accurately calculating and displaying token values and conversions using dynamic market data• Implemented over 40% of the wallet base UI components, using React Native, advancing the team’s performance• Collaborated with product, design, desktop, backend, and QA teams for feature integration and timely releases.• Mentored new joiners, conducted code reviews, and enforced coding standards, resulting in high quality team output

• Crafted smooth gestures and animations using RN Gesture Handler and Reanimated, improving the app’s UX• Identified and refined coding design of critical components, significantly reducing bugs on pivotal screens• Built components with high attention to detail and proposed UI/UX improvements where appropriate• Led discussions to propose best practices and guidelines, which reduced technical debt and improved code quality

Web3 Social Storage➢ Overview★ Products: Sticknet iOS, Sticknet Android, Sticknet Web★ Scientific foundation: Stick Protocol - IEEE★ Open-source: sticknet-mobile, sticknet-engine, sticknet-web, stick-protocol• Shipped Sticknet, an end-to-end encrypted and decentralized cloud storage & social network,built with React Native, TypeScript, Redux and native code• Integrated Sign-In With Ethereum for iOS, Android, and Web, for passwordless and anonymous account access• Leveraged WebSockets from Firebase Realtime Database for real-time data synchronization, achieving minimal latency• Developed 100+ reusable typed components, increasing the app’s scalability and maintainability• Implemented in-app renewable subscription, improving the app’s sustainability• Setup CI/CD pipelines using CircleCI and Fastlane, reducing deployment times by multiple folds• Carried out unit and integration tests using Jest, end-to-end tests using Detox, improving the app’s reliability

• Engineered a custom cryptographic protocol including design, verification, implementation and performance evaluation, introducing the following security features: ✦ Multiple pairwise sessions for backward secrecy of exchanging re-establishable session keys ✦ Encryption sessions life cycle for many-to-many communications post-compromise security ✦ Double-Hashing for complete hiding of the user’s password ✦ Refreshing Identity Keys to self-heal from long-term keys leakage• Published its paper in a high impact IEEE Journal, establishing credibility and contributing to industry knowledge• Optimized cryptographic operations for performance, balancing security with computational efficiency for real-time applications, achieving just a 5% average overhead• Implemented the protocol as iOS and Android native libraries using Swift, Objective-C and Java, in addition to a backend public key infrastructure library in Python and a client handlers library in TypeScript

• Designed and implemented RESTful APIs, enabling seamless integration with frontend applications• Architected and deployed production-grade infrastructure on AWS, utilizing private-public subnets, decoupled databases, and multi AZ, to ensure high performance, scalability, availability, and security• Conducted A/B testing on web and mobile apps to assess the impact of new features on the product