Sr. Software Engineer (Firmware)

Adtran Networks-posted 8 days ago
Full-time • Senior
Hybrid • Atlanta, GA
1,001-5,000 employees
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The Senior Software/Firmware Engineer will design, develop, and test embedded software for Reconfigurable Optical Add-Drop Multiplexers (ROADMs). You will collaborate closely with optical, hardware, and test engineers to deliver high-quality, production-grade firmware for next-generation optical networking systems.

  • Design, develop, and integrate modern C/C++ embedded software running on Linux and real-time operating systems (RTOS) such as FreeRTOS.
  • Own the complete software development lifecycle — from requirements and architecture through implementation, testing, debugging, and deployment.
  • Develop and maintain device drivers for fiber-optic components (e.g., WSS, OCM) and other hardware subsystems.
  • Collaborate with hardware teams on schematic reviews, hardware design input, and board bring-up.
  • Partner cross-functionally with optical, hardware, and test engineers in an Agile environment to meet product milestones and quality goals.
  • Develop and maintain unit tests, automation scripts, and test frameworks to verify and validate firmware functionality.
  • Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
  • 10+ years of experience in embedded software or firmware development, preferably in telecommunications or networking.
  • Strong proficiency in modern C/C++, including adherence to C++ best practices and coding standards.
  • Experience with RTOS, low-level debugging, and hardware/software integration.
  • Solid understanding of embedded communication protocols (SPI, I²C, UART) and hands-on experience developing and debugging device drivers.
  • Familiarity with ARM or other microcontroller architectures.
  • Proficient with Git and collaborative development workflows (branching, reviews, CI).
  • Skilled in reading schematics, using oscilloscopes, and troubleshooting embedded systems.
  • Experience participating in code reviews, testing, and documentation to ensure high-quality deliverables.
  • Excellent analytical, problem-solving, and communication skills.
  • Demonstrated ability to work effectively with cross-functional teams, including QA, product management, and manufacturing.
  • Commitment to continuous learning and staying current with modern C++ and emerging embedded technologies.
  • Must be authorized to work in the United States.
  • Energetic, collaborative, and eager to work with a diverse team.
  • Positive attitude, adaptability, and a genuine desire to learn, innovate, and excel.
  • Experience developing device drivers for ASICs or FPGAs.
  • Hands-on experience with CMake and scripting languages (Bash, Python, Ruby, or Perl).
  • Experience implementing CI/CD pipelines for embedded platforms.
  • Familiarity with Agile/Scrum methodologies.
  • Understanding of optical networking technologies such as OTN, Gigabit Ethernet, and related transport systems.
  • Proficiency in using oscilloscopes, logic analyzers, and diagnostic tools for system validation and debugging.
  • Join a team that’s shaping the future of optical networking.
  • We offer a collaborative environment, opportunities for professional growth, and the chance to work with cutting-edge technologies that power global communications.
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