CareerPlanSign in

Senior iOS Engineer – Payments & Hardware Integrations

Sunnyvale, California, US💼 Full-time💰 $140,000–$140,000🗓 2026-09-28 → 2026-09-29

Core

Design, build, and maintain native iOS framework components for Bluetooth Low Energy (BLE) and EMV card readers, leading end-to-end device and software payment certification efforts.

Role type

Senior IC iOS engineer (payments & hardware integration)

Builds

Native iOS frameworks for payment readers and transaction processing flows

Domain

Fintech / Payments / Hardware Integration

Required skills

Swift, Objective-C, Bluetooth Low Energy (BLE), EMV protocols, cryptographic protocols (DUKPT, AES, RSA), secure key management, low-level protocol debugging

Preferred skills

POS platform experience, native C/C++ library development

Technologies

iOS, Swift, Objective-C, BLE, EMVCo, PCI-DSS, Go3 reader

Responsibilities

Design and maintain native iOS framework components for BLE and EMV card readers; Lead end-to-end device and software payment certification efforts; Interface with Core Payments engineering for transaction processing and tokenization; Conduct real-time hardware debugging and firmware testing in on-site labs; Serve as US-based SME for iOS payments bridging local and global teams

Seniority

Senior, hands-on IC

Sourced via workday · Listed on CareerPlan, which tracks 852,000+ jobs from 20+ sources.