Hardware Engineer Jobs

About The Position

Requirements

• At least 5 years of hands-on experience building, testing, and shipping production-grade native iOS applications or frameworks using Swift and Objective-C.
• Hands-on experience connecting iOS applications to external hardware accessories or peripherals using CoreBluetooth, Bluetooth Low Energy (BLE), MFi, or USB interfaces.
• Deep understanding of iOS framework design, API architecture, multithreading, memory management, and asynchronous networking.
• Exposure to secure key management, cryptographic principles such as AES, RSA, or tokenization, or REST/WebSocket APIs.
• Curiosity and drive to troubleshoot complex edge cases spanning software, network protocols, and physical hardware layers.

Nice To Haves

• Experience with payment processors, card readers such as Clover, Square, Stripe Terminal, Ingenico, or Verifone, or point-of-sale systems.
• Familiarity with payment industry standards such as PCI-DSS, PCI-PTS, or EMVCo, or device certification workflows.
• Experience writing or maintaining shared native C/C++ libraries wrapped for iOS via Objective-C++ or Swift C-interop.

Responsibilities

• Design, build, and maintain modular native iOS SDKs and frameworks that communicate with Bluetooth Low Energy card readers, smart accessories, and next-generation terminal hardware.
• Partner with backend and Core Payments teams to integrate transaction processing, tokenization, refunds, and secure cryptographic communications on iOS.
• Use the Sunnyvale hardware lab for hardware-in-the-loop debugging, reader firmware testing, and performance optimization.
• Write clean, maintainable Swift and Objective-C components emphasizing thread safety, low latency, and robust offline-first execution.
• Serve as a U.S.-based technical lead for iOS hardware integrations, coordinating communication between local lab teams and global engineering groups.

Benefits

• Fuel Your Life program supporting physical, financial, social, and emotional well-being.
• Paid holidays and generous time-away policies.
• No-cost mental health support through Employee Assistance Programs.
• Living Proof peer-recognition program with points redeemable for rewards.
• Eight Employee Resource Groups.
• Professional growth through training, development, and internal mobility opportunities.
• Medical, dental, vision, life, and disability insurance options available from day one.
• Retirement planning and discounted shares through the Employee Stock Purchase Plan.
• Tuition assistance and reimbursement program.
• Paid parental, caregiver, and military leave.
• Annual incentive opportunity for eligible associates, which may be delivered as cash bonus and/or equity awards at the company’s discretion.