Docsis RF Test Engineer

The role is a Senior RF DOCSIS Test Engineer

Environment:
Cable Labs Certification Lab

Position Overview

We are seeking a highly skilled DOCSIS PHY Certification Engineer to support hands‑on certification testing within the Cable Labs certification lab in Louisville, Colorado. This role is focused on executing and supporting DOCSIS physical layer (PHY) certification testing for cable modems and CPE devices in a true HFC cable environment.

The ideal candidate will have strong, practical experience with DOCSIS RF testing, lab setup, troubleshooting certification failures, and documentation. This is a lab‑based role requiring daily interaction with test platforms, CMTS systems, and HFC plant simulators.

Key Responsibilities

DOCSIS Certification & Lab Operations

Perform DOCSIS PHY layer certification testing on cable modems and CPE devices in accordance with Cable Labs requirements

Configure and manage certification test environments, including:

CMTS platforms

HFC plant simulators

Devices under test (DUTs)

Test Execution & Analysis

Execute Acceptance Test Procedures (ATPs) using industry‑standard PHY test platforms

Analyze test results and investigate certification failures across modem, CMTS, and simulated plant environments

Perform root‑cause analysis of PHY‑level issues related to RF impairments, device behavior, or interoperability

Test Platforms & Tools

Operate and troubleshoot Averna Jupiter 310 and ePIDoX PHY test systems (experience preferred)

Support operator‑specific or custom test engagements beyond standard certification flows

Documentation & Reporting

Prepare and maintain detailed certification reports and technical documentation

Document lab configurations, test execution details, failure analysis, and corrective actions

Collaborate with internal teams, vendors, and operators to communicate results and findings

Required Qualifications (Must‑Have)

Hands‑on experience with DOCSIS RF testing in cable/HFC environments

Experience must be DOCSIS‑specific; general RF, wireless, or cellular backgrounds alone are not sufficient

Strong understanding of DOCSIS PHY layer fundamentals and cable modem behavior

Experience configuring and working with CMTS systems and HFC plant simulations

Ability to work full‑time on‑site in a lab environment in the Denver metro area

Preferred Qualifications (Nice‑to‑Have)

Experience with Averna Jupiter 310 and/or ePIDoX PHY test platforms

Prior involvement with Cable Labs certification programs

Exposure to DOCSIS 3.0, 3.1, or DOCSIS 4.0 certification testing

Experience supporting MSO‑specific certification or pre‑certification labs

Work Location & Expectations

On‑site presence required for the first 6 months (no exceptions)

Candidates must be located in or willing to commute to the Denver/Louisville, CO area

Limited remote flexibility may be considered after initial ramp‑up, based on lab needs and performance

What We're Looking For

This role is well‑suited for a candidate who:

Is comfortable working hands‑on in a DOCSIS certification lab

Understands the full cable RF ecosystem, from PHY behavior to HFC plant conditions

Enjoys structured testing, repeatability, and detailed technical analysis

Can clearly document test results and collaborate with engineering stakeholders

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