Job Description

Principal Embedded Software Engineer (Wireless Networking)

About SimpliSafe

Were a high-tech home security company thats passionate about protecting the life youve built and our mission of keeping Every Home Secure. And weve created a culture here that cares just as deeply about the career youre building. Ours is a no ego culture of collaboration and innovation where those seeking their next challenge can find big opportunities and make a huge impact on the lives of all those who we protect. We dont just want you to work here. We want you to grow and thrive here.

Were embracing a hybrid work model that enables our teams to split their time between office and home. Hybrid for us means we expect our teams to come together in our state-of-the-art office on two core days, typically Tuesday and Wednesday, to work together in person, and teams can choose where they work for the remainder of the week. We all benefit from flexibility and get to use the best of both worlds to get our work done.

Why are we hiring?

Well, were growing and thriving. So, we need smart, talented, and humble people who share our values to join us as we disrupt the home security space and relentlessly pursue our mission of keeping Every Home Secure.

What Youll Do

As a Principal Embedded Software Engineer specializing in Wireless Networking, you will be a focused on the Systems Engineering task of optimizing SimpliSafes Wireless communications systems to optimize performance, resilience and power. You will be a critical contributor to our product development, focusing on the intricate world of IoT device connectivity. This role demands a profound understanding of not only wireless radio and communication stacks but also the entire networking stack, from the physical layer up to the application. You will be responsible for debugging complex issues and meticulously optimizing every layer of the network stack to achieve unparalleled performance, reliability, and power efficiency in our cutting-edge IoT and camera devices.

This is a hands-on role where you will dive deep into firmware, analyze network traffic, and collaborate closely with hardware, software, QA and cloud teams to deliver robust and highly optimized wireless solutions.

Responsibilities:

• Full Communications Stack Network Debugging & Optimization: Diagnose and resolve complex network connectivity, throughput, latency, and reliability issues across the entire networking stack, from the wireless radio (PHY/MAC layers) through TCP/IP and up to the application layer on embedded IoT devices.
• Protocol Implementation & Tuning: Implement, port, and optimize low power wireless (802.11, HaLow, Thread) and TCP/IP protocols to meet specific performance, power, and memory constraints of embedded systems.
• Performance Analysis: Conduct in-depth performance analysis of wireless and networking stacks, identifying bottlenecks and proposing innovative solutions for optimization (e.g., retransmission strategies, buffer management, concurrency, power management, scheduling).
• Root Cause Analysis: Perform detailed root cause analysis of intermittent and hard-to-reproduce networking issues using advanced debugging techniques and tools.
• Cross-Functional Collaboration: Work closely with hardware engineers to characterize RF performance, integrate drivers, and troubleshoot hardware-firmware interactions. Collaborate with application software developers to ensure seamless integration and optimal use of network services.
• Testing & Validation: Define and help develop and comprehensive test plans for wireless our QA and Automation teams to include unit, integration, and system-level tests.
• Stay Current: Keep abreast of the latest advancements in wireless technologies, networking protocols, and embedded systems.
• Travel: Willing to travel to Asian manufacturing partners 1-3 times per year

Required Skills & Experience:

• Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
• 10+ years of experience in embedded firmware development with a strong focus on wireless networking.
• Expert-level proficiency in C/C++ for embedded systems.
• Deep understanding of the entire TCP/IP networking stack (Layers 2-7), including Ethernet, IP, TCP, UDP, DNS, DHCP, Thread, etc.
• Extensive experience with WiFi (802.11) protocols, including MAC layer operations, roaming, power saving modes, and coexistence.
• Hands-on experience with embedded operating systems including FreeRTOS and Linux.
• Experience with various microcontrollers (e.g., ARM Cortex-M/R) and their peripherals.
• Proven ability to optimize embedded networking stacks for throughput, latency, power consumption, and memory footprint.
• Strong understanding of network security concepts, protocols, certificates/keys, firewalls, packet inspection and filtering.
• Familiarity with the following tools:
• Wireshark, Communications Analyzer, Traffic/Load generators, Network throttling, Wireless impairment test setups.

Preferred Qualifications:

• Experience with Matter/Thread networking a plus.
• Familiarity with cloud platforms (AWS IoT) and their connectivity requirements.

What Values Youll Share

• Customer Obsessed - Building deep empathy for our customers, putting them at the core of our work, and developing strong, long-term relationships with them.
• Aim High - Always challenging ourselves and others to raise the bar.
• No Ego - Maintaining a no job too small attitude, and an open, inclusive and humble style.
• One Team - Taking a highly collaborative approach to achieving success.
• Lift As We Climb - Investing in developing others and helping others around us succeed.
• Lean & Nimble - Working with agility and efficiency to experiment in an often ambiguous environment.

What We Offer

• A mission- and values-driven culture and a safe, inclusive environment where you can build, grow and thrive
• A comprehensive total rewards package that supports your wellness and provides security for SimpliSafers and their families (For more information on our total rewards please click here )
• Free SimpliSafe system and professional monitoring for your home.
• Employee Resource Groups (ERGs) that bring people together, give opportunities to network, mentor and develop, and advocate for change.

We wholeheartedly embrace and actively seek applications from all individuals, no matter how they identify. We are committed to cultivating a diverse and inclusive workplace, and we believe our work is enriched when we incorporate a multitude of perspectives, backgrounds, and experiences. We want everyone who works here to thrive and contribute to not only our mission of keeping every home secure, but also to making our workplace safe and supportive for others. If a reasonable accommodation may be needed to fully participate in the job application or interview process, to perform the essential functions of a position, or to receive other benefits and privileges of employment, please contact careers@simplisafe.com .

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