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Jobs · Engineering · Illinois

Embedded Software Test Engineer (US Citizen Required)

The Ranger Group · Niles, IL · 1 wk ago
On-siteEngineering$60–$80/hrFull-time

Type: Contract | Length: 6 months | Pay Rate: $60-80/hr (DOE) | Work Site: Hybrid | Location: Chicago, IL | Visa: Must be a US Citizen based on project

About the role

The Ranger Group, a leading US Engineering Solutions provider to companies across the Aerospace & Defense, Medical Device, Electronics and Industrial Manufacturing industries, is seeking a skilled Embedded Software Test Engineer to join a high-performing engineering team at a leading aerospace and defense manufacturer in the Chicago metropolitan area. In this contract role, you will design, develop, and execute software test strategies for embedded systems used in mission-critical applications. You will work closely with firmware and hardware engineers to validate software functionality against requirements and ensure the highest levels of quality and safety.

Responsibilities

  • Design and develop automated test frameworks using Python (pytest) for embedded software validation
  • Write requirement-based test cases from software specifications using both black-box and white-box testing methodologies
  • Perform embedded software testing on microcontroller-based systems, including validation of internal peripherals (GPIO, UART, SPI, ADC, Timers)
  • Debug and analyze hardware and software issues using tools such as JTAG debuggers and oscilloscopes
  • Collaborate with embedded firmware engineers to support integration and system-level testing
  • Document test plans, test cases, test results, and defect reports
  • Participate in design and code reviews with cross-functional engineering teams

Requirements

  • Python & Test Automation
    • Proficiency in Python programming with hands-on experience building pytest-based automated test frameworks
    • Solid understanding of object-oriented programming concepts; ability to write test cases using classes
    • Experience with requirement-based test development — translating software requirements into executable test cases
    • Demonstrated experience with both black-box and white-box testing approaches
  • Embedded C Programming
    • Strong proficiency in embedded C programming with solid knowledge of low-level programming concepts
    • Practical experience writing and debugging C code for resource-constrained microcontroller environments
  • Microcontroller Knowledge
    • Good working understanding of microcontroller architectures and internal peripherals
    • Hands-on experience with GPIO, UART, SPI, ADC, Timers, and related hardware interfaces
  • Debugging & Communication Protocols
    • Experience using hardware debugging tools including JTAG debuggers and oscilloscopes
    • Familiarity with serial communication protocols, particularly UART and SPI

Preferred Qualifications

  • Experience with bare-metal (non-OS) embedded software development
  • Proficiency with TI Code Composer Studio or equivalent embedded IDE
  • Knowledge of DO-178C (Software Considerations in Airborne Systems and Equipment Certification)
  • Prior experience in aerospace, defense, or other safety-critical industries

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