Sr Specialist Embedded Firmware Developer (C/C++ Coding, System design & Networking)

AT&T; Hyderabad; Sur place; INR 3 000 000 - 6 000 000; Plein temps

Résumé du poste

AT&T is seeking a Sr Specialist Embedded Firmware Engineer for Residential Gateways in India. You will drive design, optimization, and scaling of prplOS-based platforms across Broadcom/MaxLinear SoCs, owning Linux wireless architecture and Wi‑Fi6E/7 capabilities.

You will champion automation with Python, perform deep profiling with perf/Valgrind, and ensure code quality through unit tests across lifecycle, in a role emphasizing carrier-grade stability and hardware abstraction.

Qualifications

• 5+ years of hands-on embedded firmware development in telecom/networking/ residential gateway industries.
• Proficiency in C and modern C++ on resource-constrained embedded systems.
• Strong knowledge of Embedded Linux development in OpenWrt or prplOS ecosystems.
• Experience with broadband management standards TR-181 and USP (TR-369).
• Experience deploying containerized microservices with Docker and prpl LCM.
• Deep knowledge of Linux Wireless stack (hostapd, wpa_supplicant, iw) and drivers.
• Profiling/debugging using perf and Valgrind.
• Git for source control and branching strategies.

Responsabilités

• Architect, develop, and maintain high-performance embedded firmware across gateway hardware.
• Test automation using Python to validate system components and APIs.
• Profile OS memory/CPU, fix memory leaks, and reduce bottlenecks.
• Design and optimize Wi‑Fi6E/Wi‑Fi7 features with hostapd and related tools.
• Manage containerized microservices and lifecycle tooling (Docker, prpl LCM).
• Implement and maintain device management and service models (TR‑181, USP).
• Configure and maintain Linux networking stacks and routing/bridging.

Connaissances

C/C++

Embedded Linux

OpenWrt/prplOS

TR-181/USP

Docker

prpl LCM

perf/Valgrind

hostapd/wpa_supplicant/iw

Git

Networking L2/L3

Outils

Docker

prpl LCM

Description du poste

Sr Specialist Embedded Firmware Engineer – Residential Gateways (prplOS & Wireless)

Role Overview

We are looking for an Embedded Firmware Developer with 5+ years of experience to drive the design direction, optimization, and scaling of our next‑generation Residential Gateway products. Our software architecture leverages prplOS, making our platform inherently SoC‑independent across diverse silicon, including Broadcom and MaxLinear SoCs. In this role, you will serve as the technical authority for our embedded firmware and wireless stack. You will own the Linux wireless architecture, scaling our platform to support cutting‑edge Wi‑Fi6E and Wi‑Fi7 capabilities, while ensuring carrier‑grade stability through deep system‑level profiling and optimization using tools like perf and Valgrind. Additionally, you will champion automation by using Python scripting to build robust testing and unit testing framework methodologies that ensure code quality across the entire lifecycle.

Key Responsibilities

• Test Automation & Scripting: Architect and implement automated testing and unit testing frameworks using Python to validate system components, APIs, and overall firmware reliability.


• Performance Profiling & Optimization: Use perf, Valgrind (Memcheck, Massif, Helgrind), and kernel utilities to profile OS memory and CPU management, eliminate memory leaks, resolve race conditions, and minimize CPU bottlenecks.


• Wireless Stack & Driver Integration: Design, configure, and optimize Wi‑Fi6E and Wi‑Fi7 features using hostapd, wpa_supplicant, and iw sub‑systems.


• Firmware Development: Architect, develop, and maintain high‑performance firmware in C and C++ across various gateway hardware platforms.


• SoC Abstraction: Leverage prpl APIs to maintain hardware‑agnostic implementations across multiple carrier‑grade SoCs.


• Inter‑process Communication (IPC): Develop and maintain scalable services utilizing ubus and/or iMTP to ensure reliable internal bus communication.


• Network Stack Management: Design and troubleshoot robust Layer 2 and Layer 3 network stacks to ensure optimal routing, bridging, and packet forwarding.


• Service Management & Provisioning: Implement and maintain device management and service models, including TR‑181 data models and USP (User Services Platform / TR‑369).


• Containerization & Lifecycle Management: Configure and manage containerized microservices and virtual execution environments using Docker and prpl LCM (Lifecycle Management).


• Version Control: Manage source code, branching strategies, and firmware release pipelines using Git.

Must‑Have Requirements

• Experience: 5+ years of hands‑on embedded firmware development experience in the telecom, networking, or residential gateway industries. Languages: High proficiency in C and modern C++ programming within resource‑constrained embedded systems. Platform Expertise: Strong working knowledge of Embedded Linux development within OpenWrt or prplOS ecosystems. Device Management: Deep, production‑level expertise with broadband management standards, explicitly TR‑181 data models and USP (TR‑369). Containerization: Demonstrated experience deploying, isolating, and configuring containerized microservices using Docker and lifecycle tools like prpl LCM. Advanced Linux Wireless: Deep knowledge of the Linux Wireless stack, including hostapd, wpa_supplicant, iw, and Linux wireless drivers. Networking Protocols: Deep understanding of Layer 2/3 networking and core routing/bridging concepts. Profiling & Debugging: Hands‑on experience with Linux profiling and debugging tools, specifically perf and Valgrind. Version Control: Strong expertise managing source code and branching strategies via Git.

Good‑to‑Have Requirements

• Next‑Gen Wi‑Fi: Experience implementing, configuring, or debugging next‑generation wireless features like Wi‑Fi6E and Wi‑Fi7.


• Scripting & Automation: Proficiency in Python for creating automated test scripts, hardware validation, or test execution.


• Testing Frameworks: Experience building or maintaining unit testing frameworks (e.g., CUnit, Unity, PyTest) in an embedded context.


• IPC Frameworks: Deep familiarity with OpenWrt ubus and message bus architectures like iMTP.


• Hardware Abstraction: Hands‑on experience developing abstraction layers on Broadcom or MaxLinear residential gateway SoCs.

Weekly Hours

40

Time Type

Regular

Location

Bangalore, India, Hyderabad, India

AT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit‑based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws. In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made.

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