Embedded Software Engineer

Ciena is a global leader in high-speed connectivity that prioritizes a flexible work environment and individual growth. They are seeking an Embedded Software Engineer to design, implement, and maintain firmware across the full software stack for high-reliability products, collaborating with hardware engineers and systems architects.

Responsibilities:

• Develop and maintain embedded Linux firmware on OpenWrt based ONU systems
• Implement and extend PON subsystem software: XGS-PON registration, OMCI agent, eOMCI, Active-Active coordination, and MIB synchronization
• Integrate and configure the Ethernet switching subsystems on Ciena hardware, VLAN operations, port management, QoS (traffic classification, scheduling, shaping), and LACP
• Develop U-Boot bootloader extensions, firmware upgrade flows, and firmware version management
• Implement and maintain security features: TPM 2.0 integration, Secure Boot, OMCI-level PON encryption
• Write and maintain OpenWrt package Makefiles, custom feeds, and build scripts
• Develop and apply patches to the OpenWrt/prplOS base for platform-specific capabilities
• Participate in code review, write unit and integration tests, and debug issues from lab bring-up through field deployment
• Maintain technical documentation and component-level design notes

Requirements:

• Bachelor's or Master's degree in Computer Engineering, Electrical Engineering, Computer Science, or a closely related field
• 3–5 years of relevant professional experience in embedded software or firmware development
• Proficient in C for embedded/systems programming; familiarity with C++ a plus
• Hands-on experience with embedded Linux (kernel drivers, device trees, init systems, cross-compilation)
• Familiarity with OpenWrt or a comparable embedded Linux build system (Yocto, Buildroot)
• Working knowledge of networking fundamentals: Ethernet, VLANs, QoS, LACP, TCP/IP
• Experience with bootloaders (U-Boot preferred) and firmware lifecycle management
• Comfortable using Git, Make, and Linux command-line toolchains
• Experience with PON technologies (XGS-PON, GPON) and the OMCI protocol stack (ITU-T G.988)
• Familiarity with Marvell/Broadcom switching components or equivalent merchant silicon SDK for switching/routing ASICs
• Experience integrating TPM 2.0 and/or Secure Boot in embedded platforms
• Knowledge of NAND flash memory layouts, UBI/UBIFS, and MTD subsystems
• Experience with inter-process communication mechanisms (ubus, Unix sockets, shared memory)
• Nice to have CAN bus experience