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 highly motivated, collaborative, and results oriented software engineer with a strong background in building high-performance, real-time high network traffic inspection technology. The ideal candidate must be an excellent individual contributor, detail-oriented, self-motivated with strong communication skills and the ability to work effectively both independently and with others in a small team. You will be part of a highly talented team that is constantly innovating, improving, and expanding the network intelligence technology at the core of the Calix platform.

Responsibilities and Duties:

• Develop real-time network intelligence technology and platform software for cloud managed consumer and business secure internet gateway products.
• Research, prototype, and develop advanced cybersecurity features aimed at protecting millions of homes and businesses.
• Develop 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.
• 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:

• 5+ years of experience designing, coding, and evolving high-performance real-time network security and intelligence software products.
• 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.

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