Senior Embedded Software Engineer/W2 Contract

Senior Embedded Software Engineer

Schaumburg, IL

Contract on W2

NEED CANDIDATE WITH 7 YEARS EXPERIENCE

Overview

We are seeking a Senior Embedded Software Engineer to support the development of next-generation secure NFC/RFID credential reader products. This individual will be responsible for designing, developing, and delivering production-quality embedded firmware within an established software framework. The ideal candidate has strong hands-on experience with modern C , embedded microcontrollers, RTOS environments, and low-level driver development.

This is a highly technical firmware role focused on embedded systems rather than application software.

Key Responsibilities

• Design, develop, and maintain embedded firmware using C 17 or newer.
• Develop low-level drivers and hardware interfaces including:
  • USB
  • UART
  • SPI
  • I2C
  • GPIO
  • DMA
  • Timers
• Implement and enhance embedded software components, modules, threads, and state machines.
• Work within an RTOS environment (Zephyr preferred) to integrate drivers, middleware, and application functionality.
• Extend and support USB functionality, including CCID-related protocols.
• Optimize firmware performance, memory utilization, timing, and power consumption.
• Implement robust fault handling, recovery mechanisms, and secure coding practices.
• Collaborate with cross-functional engineering teams to integrate firmware into the broader product architecture.
• Deliver production-ready firmware that meets performance, reliability, and security requirements.

Required Qualifications

• Bachelor's degree in Engineering, Computer Engineering, Computer Science, or related technical field.
• 5 years of embedded firmware development experience.
• Strong expertise in modern C (C 17 or later). They would take a candidate with strong embedded C in place of the C
• Experience developing firmware on ARM Cortex-M microcontrollers, preferably Cortex-M4F.
• Hands-on experience with STM32 microcontrollers, ideally the STM32G4 family.
• Solid RTOS experience, with Zephyr RTOS strongly preferred.
• Strong background in low-level embedded development and device driver implementation.
• Experience working with USB stacks and USB communication protocols.
• Familiarity with Embedded Template Library (ETL) and state-machine-based architectures.
• Experience debugging and optimizing real-time embedded systems.
• Understanding of secure firmware development and embedded security concepts.

Preferred/Desired Background

• Experience with NFC, RFID, smart card, authentication, or credential reader products.
• Experience in security-sensitive industries or products.
• Familiarity with CCID (Chip Card Interface Device) protocols.
• Experience working in senior-level embedded engineering roles where ownership of major subsystems is expected.
• Ability to work independently while collaborating effectively with larger engineering teams.

Technical Environment

• Modern C (C 17 )
• Zephyr RTOS
• ARM Cortex-M4F
• STM32G4 Microcontrollers
• USB / CCID
• ETL (Embedded Template Library)
• Windows development environment with Linux-based build and test systems

Ayush Sharma Sr. US Technical Recruiter

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