Principal Embedded Software Engineer

Calix provides the cloud, software platforms, systems and services required for communications service providers to simplify their businesses, excite their subscribers and grow their value.

This is a remote position that can be based anywhere in the United States or Canada.

Our team is growing and we’re looking for a Principal Embedded Software Engineer to play a significant role in building innovative cybersecurity features. As part of our high performing global team, this role is critical to our growth and reports into the Vice President, Cybersecurity Product Engineering.

Responsibilities and Duties:

• Architect, design and implement network traffic processing infrastructure and platform software for cloud managed consumer and business secure internet gateway products.
• Work with cross functional teams ranging from PON and Ethernet switching and routing software, subscriber management for Triple Play services, performance monitoring to network management to build, integrate, unit test and support software modules within a large-scale system.
• Research, prototype, and develop advanced cybersecurity features aimed at protecting millions of homes and businesses.
• Draft high level and detailed design documentation for new features and capabilities.
• Propose and implement tools to accelerate software system development and debug environments.
• Propose and implement built in diagnostics and test scripts to help reliability and supportability.
• Work with product management and solutions engineering to write software functional specification and integration documents.
• Participate and support in fixing issues arising from customer sites.
• Analyze system scalability, interworking issues and perform root cause analysis of system issues.
• Mentor junior engineers within the team.
• Keep abreast of the latest technologies within our product area.
• The candidate is expected to demonstrate a deep sense of product ownership with a strong focus on customer satisfaction.

Qualifications:

• 12+ years of experience designing, coding, and evolving high-performance real-time network security and intelligence software products.
• 7+ years developing embedded software in C as a key contributor to the construction effort of several large sized projects of moderate to high complexity.
• Deep understanding and practical experience with linux networking fundamentals: netfilter, conntrack, qdisc, iptables/nftables.
• Knowledge and experience with a variety of network traffic pattern & behavioral matching techniques, including: compiler work for building DFAs and NFAs, regex, behavioral and heuristic network traffic classification.
• Experience developing advanced network intelligence solutions and familiarity with leveraging ML for application detection, threat detection, and/or device typing.
• Knowledge and experience designing high-performance networking solutions with one or more of VPP, DPDK, XDP, eBPF, iptables/ebtables/nftables, qdiscs, hardware flow accelerators, FPGAs.
• Expert level understanding and experience working with L2-L7 protocol details.
• Organized and goal-focused, ability to deliver in a fast-paced environment.
• Excellent analytical, integration, and debugging skills.
• Excellent oral and written communication skills.

Location:

• Remote-based position located in the United States or Canada.