The Role
Own end-to-end antenna design for connected consumer products, from architecture and prototyping through mass production. Responsibilities include RF component selection, PCB layout, antenna integration, tuning, simulation, validation, compliance testing, and production support. The engineer will collaborate with mechanical, firmware, product, and overseas manufacturing teams while optimizing performance, size, power, reliability, and manufacturability. The role requires advanced experience with electrically small multiband antennas, RF laboratory measurements, antenna fabrication methods, and automation using Python.
Summary Generated by Built In
Welcome to Fi.
We’re a passionate team from Square, Google, Oura, Peloton, Uber, and more working to transform the human-pet relationship. Our mission? Develop cutting-edge technology to revolutionize what it means to be a pet parent. The pet industry remains firmly stuck in the past and we are here to change that. Fi is leveraging our team's talent and expertise to improve the lives of millions of pets in the U.S. Real-time location tracking, activity, sleep and behavior monitoring – and that's just the beginning.
The most exciting aspect of our work? Bridging the communication gap between pets and humans. Imagine a world where everyone knows how their pet feels in real time and how to keep their best friend in good shape. That's the future we're building at Fi.
If you're someone who thrives in innovative, collaborative work environments and feels strongly about helping pets live longer, better lives, Fi could be the perfect fit. Join us in our pursuit of the “impossible,” or as we call it here “let me find a way,” to redefine the future of pet ownership together.
Fi is looking for an Antenna Engineer!
Fi is looking for an Antenna Engineer to own antenna design end-to-end for our connected products, shaping how they perform in the real world, not just on paper. You’ll work from early system architecture through mass production, partnering closely with electrical, mechanical, and product teams to solve hard constraints around size, power, reliability, and manufacturability. The work spans RF design, antenna integration, tuning, and validation, and directly sets the technical foundation for Fi’s next generation of high-volume consumer hardware operating at scale.
What You'll Do:
- Own end-to-end antenna design for Fi products, from proof-of-concept through mass production.
- Lead antenna architecture and contribute to overall system architecture, including RF component selection, schematic capture, and RF PCB layout.
- Design, optimize, tune, and validate antennas to meet aggressive constraints around size, performance, reliability, and manufacturability.
- Work closely with mechanical, industrial design, firmware, leadership, and overseas engineering teams to ensure seamless antenna integration into the product.
- Push antenna performance using a mix of best practices, state-of-the-art approaches, and novel designs where needed — because every dB matters.
- Partner directly with overseas CM/JDM teams on antenna implementation, performance testing, compliance, and production ramp.
What You'll Bring:
- 8+ years of experience designing electrically small antennas for consumer electronics or similar products.
- Bachelor’s or Master’s degree in Electrical Engineering or a related field.
- Proven ability to translate product-level connectivity requirements into RF system and antenna requirements, including managing external consultants and fabrication vendors as needed.
- Deep hands-on experience with custom antenna design in the ~600 MHz to 3 GHz range, including multiband designs, polarization control, antenna isolation in close proximity, and performance optimization near human or animal tissue.
- Strong understanding of antenna integration, including use of enclosures and mechanical structures as part of the antenna system.
- Experience across common antenna fabrication methods and materials, including LDS, FPC, PCB, stamped metal, and ceramic chip antennas, with an understanding of material tradeoffs.
- Comfort building scrappy prototypes using rapid methods such as hand-formed copper, milling, or 3D printing.
- Proficiency with 3D electromagnetic simulation tools for antenna design.
- Strong RF lab skills, including conducted and radiated measurements, antenna tuning, and managing cable effects when testing electrically small antennas.
- Experience operating semi-anechoic chamber testing and supporting regulatory and compliance testing.
- Ability to design simple schematics and PCBs to support antenna prototyping and test.
- Familiarity with firmware and software requirements for RF validation, including sensitivity metrics like BER and PER, and comfort using scripts (e.g., Python) for test automation or analysis.
- Proven track record leading antenna designs from prototype through mass production.
- Willingness to travel to China as needed.
Why You'll Love Us:
- Time to Recharge: Enjoy flexible PTO to take the breaks you need.
- Top-Notch Health Coverage: We’ve got your back (and teeth and eyes) with full medical, dental, and vision insurance.
- Wellness Perks: Free access to One Medical, Kindbody, and Talkspace to keep you feeling your best.
- Dog-Friendly Office: Bring your pup to work — they’re part of the team, too.
- Give Back to the Pups: Make tails wag with a $500 annual donation to a dog charity of your choice through our BarkBack Program.
- Free Fi Membership: Your furry best friend(s) get all the benefits of a Fi collar, on us!
- Love for Friends + Family: Share the Fi magic with loved ones through our gifting program.
Skills Required
- 8+ years of experience designing electrically small antennas for consumer electronics or similar products
- Bachelor’s or Master’s degree in Electrical Engineering or a related field
- Ability to translate product connectivity requirements into RF system and antenna requirements
- Experience managing external consultants and fabrication vendors
- Hands-on experience designing custom antennas from approximately 600 MHz to 3 GHz
- Experience with multiband designs, polarization control, antenna isolation, and performance optimization near human or animal tissue
- Strong understanding of antenna integration with enclosures and mechanical structures
- Experience with LDS, FPC, PCB, stamped metal, and ceramic chip antenna fabrication methods
- Experience building rapid antenna prototypes using copper, milling, or 3D printing
- Proficiency with 3D electromagnetic simulation tools
- Strong RF laboratory skills, including conducted and radiated measurements, antenna tuning, and cable-effect management
- Experience operating semi-anechoic chamber testing and supporting regulatory and compliance testing
- Ability to design simple schematics and PCBs for antenna prototyping and testing
- Familiarity with firmware and software requirements for RF validation, including BER and PER sensitivity metrics
- Comfort using Python or similar scripts for test automation or analysis
- Track record leading antenna designs from prototype through mass production
- Willingness to travel to China as needed
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The Company
What We Do
Fi is rethinking the relationship between dogs and humans. We build products for your dog to live their best life. We are full of experienced, passionate people that have built and shipped outstanding products for Nest, Square, Google and Uber who all care about their dogs. Together, we're bringing a digital revolution to the dog space. Today's collars and leashes are relics from the past; nothing has changed since the 80's. We're using technology to improve the dog space and affect the lives of the 100 million dogs living in the US for the better. The hardest part about being a dog owner is they can't tell you when something is wrong. Fi aims to change that; even by knowing what their 'normal' day of activity is, we're already learning so much more about our dogs than we ever could before. And we're not stopping there. We're looking for people to join us who love a good challenge—and of course, dogs. We set the bar high at Fi. In our world, "impossible" means "let me find a way".
