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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Firmware Engineer - **Company:** Molex - **Location:** Allen, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** C++ (Programming Language), Content Management Interoperability Services, Code Review, Computer Engineering, Firmware, Formal Verification, Python (Programming Language), PID Controllers, PCI Express, Real-Time Operating Systems, Software Engineering, PIC Microcontroller, Git, Bare Metal - **Published:** July 9, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17527879?backUrl=%2Fcareer%2F17527879%2FSenior-Firmware-Engineer-Texas-Allen ## About the Role * Bachelor's degree in computer engineering and related fields * 5+ years of experience in firmware design and development for communication products * Proficiency in C/C++ and Python Programming * Experience in bare-metal and RTOS based firmware development and optimization * Strong understanding of bus protocols like I2C, I3C, SPI, PCIe, MDIO etc * Hands-on experience with lab equipment like Oscilloscope, Signal Generators, OSA, VOA etc * Knowledge about PID control loops involving DAC, ADC, TEC and PIC * Experience with GIT Version Control System, CI/CD Pipelines and optical technologies is a plus ## Description Molex is seeking a highly skilled Senior Firmware Engineer to join our Optical Business Unit. In this role, you will be part of a fast-paced firmware engineering team developing next generation optical transceivers for datacenter and telecom markets. The ideal candidate will have an excellent understanding of firmware design, development and verification methodologies for optical communication products. You will collaborate with Product Management, Hardware, Operations, and Field Application Engineering Teams to drive the development of transceiver products. This role requires both domestic and international travel. Our Team Molex possesses a rich heritage in the optical industry. We provide the highest performing and field-proven wavelength management solutions from components, modules to integrated line-cards. Continuous innovation in passive component function integration, miniaturization, and manufacturing automation, cutting edge WSS and amplification technology and comprehensive optical, mechanical, electrical and software design capabilities enable us to serve the needs of high-density, high-bandwidth, and flexible optical networks of telecom, datacom, hyperscale datacenter and supercomputing. What You Will Do * Design, Develop and Verify CMIS Compliant Firmware for Optical Transceivers * Design, implement and calibrate control loops for electro-optical components * Port, Integrate and Test DSP chip driver software on target platforms * Ensure Product Performance, Reliability and Quality through Critical Code Reviews, Test Design and Analysis * Support New Product Introduction (NPI) and Application Engineering teams in bringing products to the market * Troubleshoot and resolve operational and customer issues by understanding the use cases, reproducing the issues in lab and implementing solutions * Lead distributed design and development teams across multiple time zones ## Related Videos - [More efficient software for more efficient microchips](https://www.wearedevelopers.com/videos/1164-more-efficient-software-for-more-efficient-microchips) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Playing Pong on a shoulder press machine](https://www.wearedevelopers.com/videos/100140-playing-pong-on-a-shoulder-press-machine) - [Single Server, Global Reach: Running a Worldwide Marketplace on Bare Metal in a Cloud-Dominated World](https://www.wearedevelopers.com/videos/1206-single-server-global-reach-running-a-worldwide-marketplace-on-bare-metal-in-a-cloud-dominated-world) - [Agent Smith Gets Hardware: Autonomous IoT Hacking From Debug Port to Cloud API](https://www.wearedevelopers.com/videos/100258-agent-smith-gets-hardware-autonomous-iot-hacking-from-debug-port-to-cloud-api) - [Software stack under and over the hood of the fastest accelerating car in the world](https://www.wearedevelopers.com/videos/221-software-stack-under-and-over-the-hood-of-the-fastest-accelerating-car-in-the-world) ## Related Articles - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [Dev Digest 189: Open Phones, Be the Messenger and the USB-C of AI](https://www.wearedevelopers.com/magazine/639-dev-digest-189-open-phones-be-the-messenger-and-the-usb-c-of-ai) - [The Best Software Developer Blogs to Read](https://www.wearedevelopers.com/magazine/156-the-best-software-developer-blogs-to-read) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers) - [Dev Digest 162: AI careers, MCP, AWS best practices & floppy sweaters](https://www.wearedevelopers.com/magazine/571-dev-digest-162-ai-careers-mcp-aws-best-practices-floppy-sweaters)