Electrical Design Engineer

  • San Francisco, CA, USA
  • Full-time

Company Description

We started with a simple idea—that everyone should be able to accept credit cards—and we’ve been rethinking buying and selling ever since.

For sellers, we’re creating one cohesive service to run your entire business, from a register in your pocket to analytics on your laptop. For buyers, we’re making it faster to order from the businesses you love and more fun to pay your friends back.

Buying and selling sound like simple things—and they should be. Somewhere along the way, they got complicated. We’re working hard to make commerce easy for everyone.

Job Description

Our hardware team builds the tangible connection to all that is square. From the Square Card Reader for NFC and chip cards, Square Stand, Square Terminal and Register, our family of devices is growing - and this is only the beginning. As we introduce more and more of our products to the world, our hardware footprint continues to expand.

Square’s mission demands increasingly aggressive electrical designs that include integration of multiple payment technologies, RF and near-field communication (NFC), batteries, displays, multiple CPUs, and more. All of this must coexist with security, reliability, and low-cost, high-volume manufacturing. We are looking for a passionate electrical design engineer who craves these challenges.

You will:

  • Design circuits for Square’s hardware products

  • Collaborate with firmware, mechanical, and factory test engineers, developing cohesive, elegant solutions

  • Design low-power, low-cost embedded systems optimized for volume production from “cradle to grave”

  • Travel internationally 10~20%

#LI-KZ1

Qualifications

​​​​​​​You have:

  • 5+ years experience as an electrical engineer in embedded systems

  • Experience designing and shipping high-volume consumer products

  • Expertise in the hardware lab with test, measurement, and prototyping

  • Expertise in developing schematics and leading PCB layout activities

  • Familiar with standard communication interfaces such as SPI, USB, I2C, RS232

  • Hands-on experience designing for EMC and debugging associated issues

  • Strong skills in power management and low-power optimization

  • Extensive on-site factory experience with contract manufacturers

  • BS in electrical engineering or related field

  • Experience with electrical simulation (i.e. SPICE, electro-magnetic, etc.)

Even Better:

  • Experience in board-level analog design

  • Familiarity with Altium Designer

  • Experience with ARM processors

  • Understanding of near-field and RF design fundamentals (i.e. NFC, Wi-Fi, Bluetooth, etc)

  • Experience writing embedded firmware

  • Ability to automate lab instruments with Python

Additional Information

At Square, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.