DOCSIS SME

GCS Recruitment; Aurora (CO); On-site; USD 100,000 - 130,000; Full time

Job summary

GCS Recruitment is seeking a hands-on technical leader in Aurora, Colorado, focused on DOCSIS systems and CMTS interoperability. The role involves leading test lab setups, driving root-cause analyses, and ensuring performance optimization for DOCSIS technologies.

The ideal candidate has strong experience with DOCSIS 3.0/3.1 and knowledge of 4.0, along with the ability to collaborate closely with global teams and vendors to resolve technical challenges.

Qualifications

• Hands-on experience with DOCSIS 3.0 / 3.1, 4.0 preferred.
• Experience in DOCSIS test labs and system-level validation.
• Ability to analyze logs and identify root causes.

Responsibilities

• Lead DOCSIS lab setup, validation, and qualification activities.
• Drive root cause analysis of complex DOCSIS issues.
• Collaborate with CMTS vendors to resolve interoperability issues.

Skills

DOCSIS 3.0 / 3.1 knowledge

CMTS interoperability

Root-cause analysis

Troubleshooting skills

Networking fundamentals

Tools

Wireshark

tcpdump

Linux debugging tools

Job description

This is a hands-on technical leadership role focused on DOCSIS systems, CMTS interoperability, lab validation, and advanced troubleshooting across DOCSIS broadband deployments. The role emphasizes test lab ownership, root-cause analysis, and close collaboration with chipset vendors and customers to ensure high-performance and stable DOCSIS gateway solutions.

You will work closely with global R&D teams, CMTS vendors, and silicon providers to drive end-to-end DOCSIS validation, interoperability, and performance optimization for DOCSIS 3.0, 3.1, and emerging 4.0 technologies.

Key Responsibilities

• Lead DOCSIS lab setup, validation, and qualification activities, including interoperability testing with CMTS platforms.
• Design and execute comprehensive DOCSIS test plans covering performance, provisioning, stability, and feature validation.
• Drive root cause analysis of complex DOCSIS issues using logs, packet captures, and system-level debugging.
• Troubleshoot field and lab issues using:
• Wireshark / tcpdump
• Cable modem & gateway logs
• SNMP and telemetry data
• Linux debugging tools (gdb, strace, etc.)
• Collaborate with CMTS vendors and SoC/chipset providers (e.g., Broadcom, MaxLinear) to resolve interoperability and performance issues.
• Analyze DOCSIS behaviors across layers (PHY/MAC/IP) and identify bottlenecks or failures.
• Support customer deployments and field issue reproduction, providing deep technical insights and resolutions.
• Guide and validate DOCSIS provisioning workflows:
• DHCP / TFTP / TOD
• Config files (TLVs)
• Security, certificates, and PKI handling
• Ensure robustness of firmware upgrade flows, secure boot, and DOCSIS security mechanisms.
• Maintain and enhance lab infrastructure, automation, documentation, and internal knowledge base.
• Provide technical input on DOCSIS roadmap, standards evolution, and future feature development.

Required Skills & Experience

• Strong hands-on experience with DOCSIS 3.0 / 3.1 (DOCSIS 4.0 knowledge highly preferred).
• Proven expertise in DOCSIS test labs, CMTS interoperability, and system-level validation.
• Strong experience in troubleshooting and root-cause analysis of DOCSIS/network issues.
• Deep understanding of:
• DOCSIS provisioning flows (DHCP, TFTP, TOD, TLVs)
• Certificates, PKI, and security mechanisms
• Proficiency with debugging and analysis tools.
• Solid networking fundamentals:
• IPv4/IPv6, NAT, DNS, DHCP, HTTP/HTTPS, SNMP
• Experience working with CMTS platforms and chipset vendors (Broadcom, MaxLinear, etc.).
• Strong ability to analyze logs, identify patterns, and isolate root causes across system layers.
• Experience with embedded Linux environments (debugging focus; deep development not mandatory).

Ability to lead technical discussions, mentor engineers, and work with cross-functional/global teams.

GCS is acting as an Employment Business in relation to this vacancy.