Sr. Firmware WIFI Engineer

Ring Inc., Santa Monica, CA

Your Ring of Security Starts at the Front Door

Ring is looking for a Sr. Radio Network (WLAN) Protocol Engineer to lead Ring’s radio networking protocol usage and development of current and next-generation RF products (WiFi, BLE, Zigbee and more); This encompasses lowest levels from L1 MAC to L4 Transport, including Mesh networking.

The ideal candidate is extremely well versed in WiFi and has extensive hands-on experience with analyzing and debugging with Wireshark and optimizing networking protocol parameters.


  • Optimization of RF MAC protocols for best performance (robustness & throughput) in Ring’s application. Optimization of WLAN, BT, BLE, Zigbee, MAC layers, etc.
  • Stress testing and validating protocol enhancements
  • Root causing field connectivity issues
  • Defining new and modifying existing L1-3 and higher layer protocols to perform specific needed tasks
  • Integrate radio device drivers into RTOS and Linux systems
  • Multi-tasking work across multiple products
  • Evaluation of new RF technologies, Vendor evolution and leading performance comparison testing

Required Skills

  • Experience in WLAN protocols such as rate adaptation algorithms, QoS, Encryption and security, Authentication, Power Save, Multicast, Broadcast, Unicast packets usage, Roaming, Mesh Networking, Scan, auto channel selection, etc.
  • Basic understanding of radio layer CSMA/CD, Diversity, STBC, MRC, MIMO, OFDM. Convolution Encoding, FEC, etc.
  • Experience in IP stack protocols particularly as related to getting a device on a network: DHCP, DNS, DLNA, Bonjour, proxies, etc.
  • Experience in other protocols like BLE, Zigbee, their hardware abstraction layers, application layers and profiles
  • Communicate clearly
  • Hands on
  • C/C++ coding experience
  • Experience working in both RTOS and Linux environments
  • Working ability to read schematics and component data sheets. Strong documentation and writing skills in English
  • Matlab simulation

Experience and Education

  • 10 years industry experience designing consumer electronics products with emphasis on radio frequency communication devices using industry standard protocols such as Bluetooth, WiFi, ZigBee, etc.
  • B.S. or M.S. in Electrical Engineering, Computer Science, or equivalent work experience
About Ring

Ring's mission is to reduce crime in neighborhoods and empower consumers by creating a Ring of Security around homes and communities with its suite of smart home security products: Ring Video Doorbell, Ring Video Doorbell Pro (HomeKit-enabled), Ring Stick Up Cam and the new Ring Floodlight Cam. With these security devices, Ring has created the neighborhood watch for the digital age and continues to keep homes around the world safe. For more information, visit www.ring.com . With Ring, you're always home.

Ring Inc. is proud to be an equal opportunity employer, and provides equal employment opportunities (EEO) to all employees and applicants with our regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, Ring Inc. complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities.

About Ring Inc.

The Ring Story If not for my wife, the Ring™ Video Doorbell would not exist. Inventors come up with a lot of bad ideas and she has heard them all. One night I shared my idea for reinventing the doorbell. She loved it! Not just for the obvious convenience but for the security of now being able to safely answer the door from anywhere. She said “This is like caller ID for the front door” I hope that you enjoy the Ring™ Video Doorbell as much as we do, and I look forward to hearing your stories about the product.

Want to learn more about Ring Inc.? Visit Ring Inc.'s website.