Overview
Senior Embedded Software Engineer (Wireless Networking) — SimpliSafe is a high-tech home security company dedicated to protecting the life you’ve built and keeping Every Home Secure. We foster a no-ego culture of collaboration and innovation where those seeking their next challenge can find big opportunities and make a huge impact. We support growth and thrive here. We’re implementing a hybrid work model with two core in-person days (typically Tuesday and Wednesday) and flexibility the rest of the week.
Why are we hiring? We’re growing and thriving and 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.
As a Senior Embedded Software Engineer specializing in Wireless Networking, you will focus on optimizing SimpliSafe’s wireless communications systems to improve 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 wireless radio and communication stacks as well as the entire networking stack, from the physical layer up to the application. You will debug complex issues and meticulously optimize every layer of the network stack to achieve performance, reliability, and power efficiency in our 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 comprehensive test plans for wireless 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.
- 5+ 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 You’ll 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.
- 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.
Voluntary Self-Identification
We invite you to respond to voluntary self-identification questions for government reporting purposes. Providing this information is voluntary and will not affect your consideration for employment. Your responses are confidential.
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