Firmware Developer

About the role

We are seeking a skilled C++ Firmware Engineer with hands-on experience in embedded systems and a strong understanding of vending machine technologies. This role involves developing, maintaining, and optimizing firmware that powers vending machines, including payment systems, inventory tracking, and hardware integration.

Responsibilities

• Design, develop, test, and maintain embedded firmware in C++ for vending machine systems
• Interface with hardware components such as bill validators, coin mechanisms, card readers, touchscreens, and IoT modules
• Implement and debug communication protocols (e.g., MDB, UART, SPI, I2C) commonly used in vending environments
• Collaborate with electrical, mechanical, and software engineers to ensure seamless integration
• Optimize system performance, memory usage, and power consumption
• Develop and maintain diagnostic tools and firmware update mechanisms (OTA or wired)
• Troubleshoot field issues and provide root cause analysis
• Ensure compliance with industry standards and payment security requirements (e.g., PCI, EMV where applicable)

Requirements

• Bachelor’s degree in Computer Engineering, Electrical Engineering, or related field (or equivalent experience)
• 3+ years of experience in embedded firmware development using C++
• Strong understanding of real-time operating systems (RTOS) or bare-metal systems
• Experience working with microcontrollers (e.g., ARM Cortex-M, AVR, PIC)
• Familiarity with vending machine protocols such as MDB (Multi-Drop Bus) & DEX
• Experience integrating payment systems (cash and cashless)
• Proficiency with debugging tools (oscilloscopes, logic analyzers, JTAG debuggers)
• Strong problem-solving skills and attention to detail

Skills

• Experience with IoT connectivity (Wi‑Fi, LTE, Bluetooth) in embedded devices
• Knowledge of Linux‑based embedded systems
• Familiarity with cloud integration for telemetry and remote management
• Experience in low‑power design and optimization
• Understanding of cybersecurity best practices for embedded systems
• Experience with vending machine management systems (VMS)
• Understanding or familiarity with DEX protocol
• Understanding or familiarity with MDB communication protocol
• Knowledge of telemetry, remote monitoring, and predictive maintenance

Benefits

• Competitive salary and benefits package
• Opportunity to work on innovative, real‑world embedded systems
• Collaborative engineering environment
• Career growth and development opportunities