Freelance Rf Design Engineer Jobs in Braintree, MA

Axon 911 brings together Prepared and Carbyne under Axon. Together, we are creating the only platform that combines modern 911 infrastructure with an AI intelligence layer-helping public safety agencies move faster, make better decisions, and deliver better outcomes in the moments that matter most.

911 is the backbone of public safety, yet the professionals behind it have long been held back by outdated technology. Axon 911 is here to change that. Joining this team means more than taking a job-it means helping shape the future of emergency response and building a safer, more connected world. 

We are seeking a Senior Electrical Engineer to own the design, development, and validation of complex electrical systems for mission-critical, connected hardware.

As a founding member of our hardware team, you will have significant ownership across the full hardware lifecycle, helping establish the technical architecture and engineering standards needed to scale.

You will work across schematics design and layout, RF coexistence, mechanical integration, form factor, and hardware debugging, solving complex challenges across cellular and Land Mobile Radio (LMR) frequencies, power, thermal performance, and signal integrity.

• Electrical & Board Design: Develop mixed-signal schematics and drive PCB layout across application processors, RF transceivers, power management, battery charging, memory, and high-speed digital interfaces.
• RF Integration & Coexistence: Design and validate RF and radio systems across multiple wireless technologies, addressing RF performance, coexistence, interference, isolation, and electromagnetic compatibility.
• Mechanical Integration: Partner closely with Mechanical and Industrial Design to optimize board layout, component placement, antenna integration, and form factor within tight physical constraints.
• Bring-Up & Debugging: Bring up, characterize, and troubleshoot hardware using oscilloscopes, spectrum analyzers, logic analyzers, power supplies, and other electrical and RF test equipment.
• Production Readiness: Drive component selection, Bills of Materials (BOMs), design documentation, verification, and electrical readiness from concept through certification and mass production.
• Technical Leadership: Provide technical direction to electrical engineering team members and external design partners, reviewing designs and driving hardware objectives to completion.

• 7+ years of embedded electronics design experience and a bachelor's degree in electrical engineering or a related discipline, with experience in high-speed, high-density, battery-powered, or low-power systems.
• Demonstrated experience with PCB design and layout, RF integration and coexistence, mechanical integration, and hardware bring-up/debugging for highly integrated devices.
• Experience across embedded subsystems, including application processors, microcontrollers, high-speed memory, power delivery, battery/charging circuitry, wireless/RF integration, and high-speed or wired interfaces.
• Proven experience taking electronics from concept through schematic and PCB design, verification, certification, manufacturing ramp, and mass production.
• Strong understanding of RF coexistence and interference across cellular and regulated frequency bands, along with signal integrity, power integrity, and electromagnetic compatibility considerations.
• Hands-on experience with Cadence OrCAD and Allegro, as well as oscilloscopes, spectrum analyzers, logic analyzers, power supplies, and related electrical and RF test equipment.
• Experience designing rigid, flex, or rigid-flex PCBs and working within tight mechanical and form-factor constraints.
• Experience designing electronics to meet U.S. and international hardware, wireless, and safety standards and regulations.
• Experience working with design partners, Original Design Manufacturers (ODMs), or Joint Design Manufacturers (JDMs) and collaborating effectively across cross-functional and geographically distributed teams.

This position offers a hybrid schedule, requiring team members to work onsite at one of our regional hubs, located in New York City, Boston, or Scottsdale, Arizona -  Tuesday through Friday.

• Relocation Assistance: Relocation support is available for qualified candidates who are currently based in the U.S., authorized to work for a U.S. employer, and open to relocating closer to one of our regional hubs.
• Fully Remote Eligibility: Full-time remote eligibility will be evaluated on a case-by-case basis to accommodate specific needs.

• Competitive salary and 401k with employer match
• Discretionary paid time off
• Paid parental leave for all
• Medical, dental, and vision plans
• Fitness Programs
• Emotional & Mental Wellness support
• Learning & Development programs
• And yes, we have snacks in our offices

Benefits listed herein may vary depending on the nature of your employment and the location where you work.

Pay Transparency
Axon offers a comprehensive total compensation package, which includes base salary, a generous annual bonus, and company equity.
The starting base annual pay for this role is between $170,900.00 - $196,535.00 excluding annual bonuses and equity, depending on your geographic market. The actual base salary will vary based on several factors, including level, function, training, transferable skills, work experience, business needs, and location-often a combination of these elements.
Our benefits are designed to support you physically, financially, and emotionally-through life's major milestones and in your everyday moments. To learn more about our benefits, please visit www.axon.com/careers/benefits.