Embedded Linux Software Engineer, Principal

Join a strategic initiative to transform our broadband device software development organization. As an Embedded Linux Software Engineer, Principal - you will contribute to the development of high-quality, innovative software for the next generation of broadband gateways serving 15 million+ customers. You will leverage your expertise to drive technical excellence, integrate AI solutions, and champion a quality-first approach to software delivery. Your individual contributions will help differentiate our software in a highly competitive market and play a vital role in shaping industry-leading products.

What You’ll Do:

Embedded Linux Software development for Broadband Customer Premise Equipment (CPE).

• Migrating CPE from a proprietary software platform to an Opensource Prplware (OpenWRT) based software solution.
• Design, Develop and Document existing systems to improve reliability and develop new innovative features.
• Software development for new Hardware with cutting-edge features and technology.
• Manage ongoing software architectural updates that include new Prplware, OpenWRT and Linux Kernel versions.
• Development in an Agile environment with up to 5 releases a year.
• Develop automated testing to validate new features.
• Develop applications to run in a Lifecycle Management (LCM) container on the Broadband CPE.

• Knowledge of Linux operating system, process execution, multi-process environments, inter-process communication. Good understanding of networking fundamentals, UDP/TCP basics, packet flow through the Linux packet processing stack. Understanding of Linux firewall and routing concepts. Knowledge of common networking protocols: DHCP, DNS. Familiarity with tcpdump and network protocol analysis.
• Knowlege of wifi concepts, AP and station roles, association and authentication of wifi stations, configuration of ssids.
• Familiarity with the gcc toolchain and debugging stack traces. Familiarity with syslog and logging concepts.
• Experience in an Agile development environment.
• Extensive experience with C programming. Familiarity with standard C libraries, and other common libraries like libssl, libcrypto, libcurl. Knowledge of prplware libraries. Familiarity with the OpenWrt build system, and its IPC mechanism ubus, overlayfs, and its config system UCI.
• 7+ years of experience in embedded software development.
• Track record of creating innovative solutions and new applications through the design, development, and coding for innovative Consumer and business applications.

Our Principal Software Engineering jobs earn between $174,100.00 - $261,100.00 USD Annual. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

Joining our team comes with amazing perks and benefits:

• Medical/Dental/Vision coverage
• 401(k) plan
• Tuition reimbursement program
• Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
• Paid Parental Leave
• Paid Caregiver Leave
• Additional sick leave beyond what state and local law require may be available but is unprotected
• Adoption Reimbursement
• Disability Benefits (short term and long term)
• Life and Accidental Death Insurance
• Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
• Employee Assistance Programs (EAP)
• Extensive employee wellness programs
• Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone