RF Test Engineer

Saratoga, CA /
Engineering – Hardware Engineering /
At Mojo, we’re inventing the future of computing – Invisible Computing – which imagines a world where information is there when you need it, technology fades away, and you can freely connect with others in a more meaningful and confident way. Our team includes talented professionals with expertise in product design, user experience, applied physics, hardware, software, optics, photonics, electronics, chemistry, biology and vision science. Together, we’re building Mojo Lens, a smart contact lens with a built-in display that gives you timely information without interrupting your focus. Mojo Lens elevates your vision by providing the information you need exactly when it's needed - all while letting you look like you.

We are a well-funded startup founded by technology experts with decades of experience developing pioneering products and platforms and backed by some of the world’s leading technology investors. We are located in Saratoga, CA.

We are looking for an experienced RF test engineer to help us validate our Radio Frequency ASICs which are integrated into a smart contact lens AR/VR system. You will be part of a larger team designing and building complex systems using a combination of custom ASICs, MCUs, SOCs, FPGA, and other off-the-shelf components. You will be working with systems consisting of wireless data, wireless power delivery, batteries, imaging, real-time video/graphics and high-performance sensors.

Roles and Responsibilities

    • You will be responsible for bring-up and characterization of RFIC’s using RF equipment in the lab such as Spectrum Analyzers, Signal Analyzers, Signal Source Analyzers, Vector Signal Generators, Vector Network Analyzers, etc.
    • Working with IC and Antenna designers, you will be responsible for performing on-board RF impedance matching from calculation/simulation to component selection and lab measurements
    • Analyze test results and author design verification test reports
    • Automate the measurement set-up using python/C/MATLAB scripts to communicate with the hardware and test instruments and post-process the data
    • Select parts needed to build RF test systems and develop code needed to operate them.
    • Regulatory exposure and emission testing.


    • BS in EE, MS preferred
    • 5+ years of work experience in RFIC validation and testing
    • Hands-on experience with electronics test equipment such as mixed-signal oscilloscopes, multimeters, source measure units, spectrum analyzers, signal analyzers, network analyzers, signal generators, etc.
    • Experience with semiconductor and custom IC characterization & regression tests
    • Programming expertise in Python, C/C++ and MATLAB
    • Working experience with different wireless communication standards such as Cellular, WLAN, Bluetooth, Zigbee, NFC
    • Experience with design and debugging of circuit boards
    • Familiarity with board schematic and layout tools
    • Familiarity with micro-controllers
    • Hands on with creating test infrastructures, test plans and reports
    • Strong analytical skills required
    • Excellent communication skills and technical writing ability

Preferred Qualifications

    • Experience in using Altium tool suite for PCB design
    • Excellent communication skills and technical writing ability
If solving challenging problems and shaping the future interests you, come join us at our offices in Saratoga, CA just outside of San Jose. Along with competitive compensation employee perks include flexible time off, access to full health benefits and a stocked fridge and pantry in the office. Even if you don’t see your dream job on our openings page, you can still apply for it with the “Create your own position” option.