Senior Native Mobile Developer (Swift & Kotlin – BLE)

We are looking for a Senior Native Mobile Developer with deep expertise in Swift and Kotlin, and a strong understanding of BLE (Bluetooth Low Energy) communications to join our team. This role will integrate our MPC (Multi-Party Computation) Crypto Wallet solution with a hardware component—that communicates with the mobile device via BLE.You will work closely with cryptography engineers, firmware teams, and backend developers to integrate the existing MPC libraries into the mobile app, define the mobile-side communication protocol, and ensure seamless and secure interaction between the mobile wallet and the Firmware.Key Responsibilities Implement and maintain native iOS (Swift) and Android (Kotlin) components of our MPC wallet application. Integrate MPC cryptographic libraries at the mobile level to facilitate secure key shares and transaction signing. Develop and optimize BLE communication protocols between the mobile app and the hardware device. Collaborate with firmware teams to define and test BLE packet structures, command sets, pairing/authentication, and data flow. Ensure security best practices are followed in all data transmission and mobile storage operations. Build robust, maintainable, and well-tested code that integrates cleanly with our overall architecture. Work with QA to write and validate mobile tests covering BLE communication and MPC flows. Participate in technical design discussions, code reviews, and continuous improvements across platforms. Troubleshoot performance issues, connectivity failures, and edge-case behaviors related to BLE and cryptographic operations.