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The Firmware Engineer II will design, develop, and test the embedded software for pluggable optical transceiver modules within the Optical Engines product unit. You will work closely with Optical, Hardware, and Test engineers to deliver high-quality, production-grade firmware for next-generation optical products.

Duties and Responsibilities

Perform all aspects of embedded firmware design and development, including architecture, design, implementation, testing, and debugging

Write device drivers for complex ASIC’s, FPGA’s, and other components

Contribute to hardware design and participate in hardware design reviews

Support the initial turn-up of new hardware

Work with optical, hardware, and test engineers to ensure product goals are met

Develop automation scripts to validate and test the product firmware

Develop user interfaces for transceiver assemblies and plugs

Assist in the design and implementation of manufacturing test fixtures

Basic Qualifications

Bachelor’s in Electrical/Computer Engineering or related

Proficient in C programming for embedded software

Debugging software experience

Real-time operating systems experience

Familiar with ARM or other microcontrollers

Familiar with UARTs as well as SPI and I2C protocols

Proficient with reading schematics and using an oscilloscope





Familiarity with optical networking (OTN, Gigabit Ethernet) is a plus

Excellent verbal and written communication skills

Requirements & Work Environment:

Permanent, full-time position 40 hours/week, Monday - Friday, in-office

Primary location in Ottawa, Canada

Must be authorized to work in Canada

Be energetic and eager to collaborate with a wide variety of cultures and personalities

Be able to maintain a positive outlook in the face of uncertainty

Have a genuine desire to learn, innovate, and succeed

About Adtran

Adtran is a leading global provider of fiber-based networking solutions and SaaS applications, focused on the broadband access market. Our comprehensive portfolio spans from the metro core to the customer premises, enabling network providers to deliver Gigabit broadband to every home and business. Our vision is to enable a fully connected world where the power to communicate is available to everyone, everywhere.

At Adtran, we believe in our people. With a diverse and inclusive team spread across the globe, our culture embraces creativity and seeks innovation and quality in everything we do. Built on a foundation of communication, trust, collaboration, and an entrepreneurial spirit enables us to be a global technology leader and a strong customer advocate.

Adtran began operations in January 1986. Headquartered in Huntsville, Alabama, Adtran is located in Cummings Research Park - the second-largest research park in the U.S. and fourth-largest in the world. Our mailing address is 901 Explorer Boulevard, Huntsville, Alabama, 35806.

Adtran, Inc. is a wholly-owned subsidiary of Adtran Holdings, Inc. (NASDAQ:ADTN and FSE: QH9). Find out more at adtran.com, or follow our story on LinkedIn and Twitter.

📌 Firmware Engineer II (Montreal)
🏢 Adtran Networks Canada
📍 Montreal