Principal Engineer

Posted Yesterday
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Bangalore, Bengaluru Urban, Karnataka, IND
In-Office
Expert/Leader
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
We are shaping the future of digital connectivity the world relies on.
The Role
Lead the architecture, development, integration, and optimization of Wi-Fi firmware for carrier-grade networking routers. Responsibilities include embedded Linux development, bootloaders, kernel modules, device drivers, networking protocols, hardware bring-up, Wi-Fi stack integration, performance tuning, and technical leadership across engineering teams.
Summary Generated by Built In
Join our Team
About this opportunity:
We are seeking a highly skilled Firmware Engineer with specialization in WiFi domain to join our team at Ericsson and help develop the next generation of networking hardware. As a Principal Wi-Fi Firmware Architect, you will own the complete WiFi firmware architecture, drive integration strategy, and provide technical leadership across Wi-Fi software, hardware interfaces, and platform components. This is a ground-up opportunity to define architecture, influence long-term technology direction, and deliver carrier-grade, high-performance, high-reliability platforms deployed at a global scale. If you're passionate about embedded development and excited to solve real-world challenges in connectivity (esp. WiFi), scalability, and network efficiency, this is your opportunity to make a direct impact in a dynamic, high-tech environment.
What you will do:
  • Design, develop, and maintain firmware for networking routers featuring WiFi capabilities
  • Work closely with hardware engineers to bring up new products and support custom hardware features.
  • Implement and optimize Layer 2/3 networking protocols, traffic management, and routing features.
  • Develop and maintain Linux-based embedded systems, including bootloaders, kernel modules, and device drivers.
  • Contribute to the integration of open-source platforms such as OpenWRT or Yocto into production firmware.
  • Analyze and troubleshoot issues across hardware, firmware, and software layers to ensure system stability and tune the system for performance.
  • Collaborate with cross-functional teams including software developers, QA, and product managers to define and deliver features.
  • Stay current with networking technologies, standards, and best practices, and apply them to product development.

The skills you bring:
  • 15+ years of Wi-Fi experience with architectural ownership
  • A strong foundation in programming, predominantly Python and C.
  • Strong knowledge of Linux operating systems, including device drivers, shell scripting and system-level concepts.
  • Understanding of computer networking fundamentals (e.g., IP/TCP/UDP, Ethernet, routing and switching).
  • Exposure to embedded platforms such as ARM-based SoCs, microcontrollers, or development boards.
  • Good knowledge of 802.11 standards (WiFi 5/6/6E/7), WAP2/WAP3-Enterprise, 802.1X/EAP, etc.
  • Good knowledge of Linux WiFi stack and daemons like hostapd
  • Have worked on MAC layer, PHY interaction, rate control algorithms, power management and security features
  • Have integrated WiFi SoCs from leading vendors (eg. Qualcomm, Broadcomm, Mediatek)
  • Have conducted WiFi performance tuning (throughput, latency, airtime fairness, RF

Skills Required

  • 15+ years of Wi-Fi experience with architectural ownership
  • Strong programming skills in Python and C
  • Strong knowledge of Linux operating systems, device drivers, shell scripting, and system-level concepts
  • Understanding of IP, TCP, UDP, Ethernet, routing, and switching
  • Experience with embedded platforms such as ARM-based SoCs, microcontrollers, or development boards
  • Knowledge of 802.11 standards including Wi-Fi 5, Wi-Fi 6, Wi-Fi 6E, and Wi-Fi 7
  • Knowledge of WPA2/WPA3-Enterprise and 802.1X/EAP
  • Knowledge of the Linux Wi-Fi stack and hostapd
  • Experience with MAC layer, PHY interaction, rate control algorithms, power management, and security features
  • Experience integrating Wi-Fi SoCs from Qualcomm, Broadcom, or MediaTek
  • Experience conducting Wi-Fi performance tuning for throughput, latency, and airtime fairness

What the Team is Saying

Vishal
Mayank
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Ericsson
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Ericsson Compensation & Benefits Highlights

  • Healthcare Strength — Health coverage is described as broad and reliable, with multiple medical plan choices, dental/vision, and mental-health/EAP resources. Available descriptions highlight healthcare and disability insurance as consistent strengths.
  • Retirement Support — U.S. materials point to an automatic company 401(k) contribution plus matching that can add up to a notably high employer contribution, and some regions also offer pension options. This structure is often cited as a meaningful component of total rewards.
  • Leave & Time Off Breadth — Time-off programs are characterized as generous, with sizable vacation allowances, paid holidays, sick time, volunteer time, and strong parental leave in some locations. PTO is frequently highlighted as a standout element of the package.

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The Company
HQ: Stockholm
88,000 Employees
Year Founded: 1876

What We Do

Ericsson builds the digital connectivity the world relies on. Our technology underpins the mobile networks, platforms, and systems that billions of people, businesses, and societies depend on every day. We are a global leader in communications technology, delivering mobile network infrastructure, cloud software, and wireless connectivity solutions for service providers and enterprises worldwide. Our networks support connectivity across 180+ countries, helping power everyday communication as well as critical digital services at global scale. Connectivity has evolved far beyond consumer mobile use. Today, nearly 80% of the world’s population accesses the internet via mobile networks, and Ericsson is helping shape what comes next. We are advancing 5G and 5G Advanced, developing network APIs that open connectivity to the global developer ecosystem, and applying automation and AI to make networks more intelligent, efficient, and resilient. Ericsson was the first company to launch live 5G networks on five continents, and our 5G platform is now commercially live in 150+ networks across 60+ countries. We also support more than 36,000 enterprise customers, enabling secure, high-performance connectivity for industries such as manufacturing, aviation, logistics, utilities, and public safety, where reliability and performance are mission critical. Innovation is central to how we work. Ericsson has approximately 28,000 employees in research and development, backed by one of the strongest intellectual property portfolios in the industry with 60,000+ granted patents. Our engineers, researchers, and technologists work across 100+ global R&D sites, helping define how networks evolve and how digital infrastructure is built for the long term. As the world moves toward a mobile-first, AI-powered, and cloud-driven future, connectivity becomes the foundation for digital transformation across every industry. Ericsson is building that foundation, shaping the future of digital connectivity through technology that operates at global scale and supports real-world impact, today and for what comes next.

Why Work With Us

Ericsson is a place for people who want to work on technology that powers everyday life. You’ll contribute to large-scale systems used every day, tackle complex challenges in live environments, and keep developing your skills and career in your own vision.

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