Calix is a cloud and appliance-based platform and managed services company. Broadband service providers leverage the Calix broadband platform, cloud, and managed services to simplify operations, engagement, and service, innovate for their consumer, business. and municipal subscribers and grow their business and the communities they serve.

Position Overview

Key Responsibilities

• Participate in cross-functional team discussions to influence system/hardware architecture, software design, and integration/test planning
• Evaluate and bring up ARM, MIPS, or x86-based boards, including bootloaders (U-Boot, UEFI/BIOS), Linux kernel, and device drivers
• Collaborate with hardware, FPGA engineers, and silicon vendors to resolve bring-up issues
• Support global teams with customer issues, root cause analysis, bug fixes, and feature enhancements
• Lead software design efforts to meet requirements for stability, reliability, scalability, and security
• Engage in all development phases: requirements review, design documentation, peer reviews, feature testing and automation, solution testing support, internal training, and customer service support
• Provide technical mentorship to junior engineers

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, Optical Engineering, or related field
• 12+ years of experience in platform software development
• Strong programming skills in C/C++
• Deep knowledge of bootloader, Linux kernel, and driver development
• Experience with Linux system programming
• Expertise in x86/ARM/PowerPC CPU architectures
• Solid understanding of hardware interfaces: PCIe, I2C, SPI, USB, DDR, UART, Ethernet, Nor/NAND, eMMC, SSD
• Familiarity with Linux kernel internals (scheduler, memory management, concurrency/synchronization, file systems)
• Experience debugging embedded software using JTAG or similar tools
• Hands-on experience with Linux distributions, toolchains, and open-source projects (e.g., Buildroot, Yocto, OpenWRT, RDK, Ubuntu)
• Ability to read hardware schematics and collaborate with hardware teams to isolate HW/SW issues
• Proficient in development tools like JIRA and GIT
• Excellent communication and collaboration skills across teams
• Strong ownership mindset and commitment to continuous improvement

Preferred Qualifications

• Experience with QCOM/BRCM SoC/SDK
• Experience with Linux networking components
• Knowledge of virtualization (QEMU, KVM, Virtio, SR-IOV, IOMMU, OVS, DPDK) and container technologies (Docker, Kubernetes, namespaces, cgroups)