Network Engineer III

JSI; Huntsville (AL); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Bonuses

Benefits package (medical, dental, 401

Generous PTO

Job summary

JSI invites you to join our team as a Network Engineer III on the Broadband IP team in Huntsville, AL, where you'll apply fiber access expertise to build scalable, multi-vendor networks and expand broadband connectivity.

This senior role focuses on GPON/XGS-PON, OLT/ONT evaluations, and delivering high-level designs (HLD/LLD) for client projects, while mentoring Level I/II engineers and collaborating with vendor teams.

Qualifications

• Bachelor's degree or equivalent practical experience in Engineering/CS/IT.
• Professional-level vendor certifications (e.g., Calix Certified Expert, CCNP, JNCIP) required.
• 5–8 years of experience in network engineering with fiber access architecture focus.
• Extensive experience with high-capacity PON platforms and core edge integration.
• Ability to translate complex architectures into actionable client recommendations.

Responsibilities

• Maintain a solid generalist networking foundation while serving as a primary expert in fiber access architectures (GPON, XGS-PON, 25G/50G PON).
• Architect large-scale, multi-vendor PON access networks and ensure integration with IP/MPLS backbones.
• Lead evaluations and vendor platform selections for OLT/ONT in client RFPs.
• Review and approve High-Level Design documents and migration strategies.
• Mentor junior engineers and provide advisory support across client environments.

Skills

Fiber access architecture

Multi-vendor network engineering

PON technologies

Technical mentoring

Client relationship management

HLD/LLD writing

Education

Bachelor's degree in Engineering/CS/IT

Tools

GPON platforms

OLT/ONT platforms

IP/MPLS networking

Job description

Department: Broadband - Network Engineering Services

Location: Huntsville, AL

Description

JSI invites you to join our team as a Network Engineer III on our Broadband IP team in our Huntsville, AL office, where you'll play a critical role in advancing broadband and telecommunications initiatives that expand connectivity and drive digital inclusion—while advancing your career within a mission-driven, growth-focused organization.

About the Company

JSI is a leading full-service consulting firm specializing in broadband solutions. For over 60 years, we have provided independent communications service providers with expert financial, engineering, management, operational, regulatory, and strategic guidance. Our extensive industry knowledge and proven track record of success have empowered clients to achieve sustainable growth and profitability. With clients nationwide and a powerful presence in markets across the United States, JSI empowers rural and regional broadband providers to expand, evolve, and excel in a rapidly shifting digital world.

Position Overview

As a Network Engineer III on the BBIP you will have a Focus in Fiber Access. Building upon a strong generalist network engineering foundation across multi-vendor telecom domains, this senior-level engineer brings specialized subject-matter expertise in high-level fiber access architecture, platform evaluation, and advanced PON technologies to serve JSI's diverse client base.

Responsibilities

• Maintain a solid generalist networking foundation while serving as a primary subject matter expert in fiber access architectures (GPON, XGS-PON, 25G/50G PON, Zero-Touch Provisioning).
• Architect large-scale, multi-vendor PON access networks, ensuring seamless integration with core edge routing, IP/MPLS backbones, and optical transport layers.
• Lead technical evaluations and platform selection of Optical Line Terminal (OLT) and Optical Network Terminal (ONT) vendors for client RFPs.
• Review and approve complex High-Level Design (HLD) documents, network migration strategies, and technical specifications for client broadband projects.
• Mentor Level I and Level II network engineers across technical engineering standards, general network troubleshooting, and client deliverable quality.
• Provide expert-level advisory, cross-functional engineering support, and root-cause troubleshooting for complex multi-vendor client environments.

Required Qualifications

• Bachelor's degree in Engineering, Computer Science, IT, or a related field (or equivalent practical experience).
• Professional-level vendor certifications (e.g., Calix Certified Expert, CCNP, JNCIP, or equivalent) required.
• 5–8 years of experience in network engineering, with a strong focus in fiber access architecture and multi-vendor service provider integration.
• Extensive experience with high-capacity PON platforms and core edge integration.
• Demonstrated ability to manage complex engineering engagements and high-level client relationships.
• Ability to translate complex technical architectures into actionable client recommendations.
• Proficiency in technical writing and creating high-quality client-facing engineering deliverables (HLDs/LLDs).
• Strong interpersonal skills for client meetings and vendor coordination.
• Solid understanding of project budgets, timelines, and billable-hour environments.

Benefits & Compensation

• Competitive salary + performance-based bonuses.
• Comprehensive benefits package (medical, dental, vision, 401(k)).
• Generous PTO and wellness opportunities.
• Ongoing professional development and educational opportunities.