💼 Full-Time Position

Principal Software Engineer

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Actalent
📍 Horsham, PA, United States
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Location
Horsham, United States
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Posted
June 29, 2026
Type
Full-Time
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Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

Job Title: Principal Software Engineer – Embedded Linux & Optical Networking Systems
Direct Placement, hybrid work schedule
Job Description
This role focuses on developing chassis-level firmware and system control software for large-scale optical networking platforms. You will work on embedded Linux–based user-space applications that sit above low-level real-time firmware, concentrating on system integration, northbound interfaces, networking protocols, redundancy, and overall system reliability. The platform includes a controller and management card acting as the master, multiple line cards handling optical and transport functions, and a user-facing control plane that abstracts and manages the underlying hardware. You will build and enhance software that manages provisioning, upgrades, fault handling, security, and communication between hardware subsystems and customer-facing interfaces.
Responsibilities

+ Develop embedded Linux firmware and system-level software ...