Hardware Engineer

  • Toronto, ON, Canada
  • Full-time

Company Description

Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square. After enabling anyone to take payments and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn’t work together.

To solve this problem, we expanded into software and built integrated solutions to help sellers sell online, manage inventory, book appointments, engage loyal buyers, and hire and pay staff. Across it all, we’ve embedded financial services tools at the point of sale, so merchants can access a business loan and manage their cash flow in one place. Afterpay furthers our goal to provide omnichannel tools that unlock meaningful value and growth, enabling sellers to capture the next generation shopper, increase order sizes, and compete at a larger scale.

Today, we are a partner to sellers of all sizes – large, enterprise-scale businesses with complex operations, sellers just starting, as well as merchants who began selling with Square and have grown larger over time. As our sellers grow, so do our solutions. There is a massive opportunity in front of us. We’re building a significant, meaningful, and lasting business, and we are helping sellers worldwide do the same.

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.

Block's mission demands increasingly aggressive product designs, which necessitate the hands-on attention of multiple engineering disciplines to design, build, and validate them. As a hardware design engineer, you will be primarily responsible for the design and test of electronic circuit devices such as card readers and NFC systems.

Additionally, you will contribute to the process of certification of the devices. You will be using specialized equipment (e.g. Robotic test tools), troubleshooting failed devices/components, and executing deep validation tasks.

You Will:

  • Develop and debug hardware and the embedded software
  • Design electronic circuits using suitable components, systems and equipment.
  • Define test methodologies and process improvements
  • Generate documentation to support design testing and/or production activity
  • Perform simulations to validate design choices
  • Prepare product operational documentation to support software development


You Have:

  • Bachelor or Master's in Electrical Engineering or related fields
  • 2+ years for MSc and 5+ years for BSc of related EE or software experience.
  • Embedded firmware experience is a plus, as is good understanding of real-time embedded OSes internals (uCOS, VxWorks or any other, semaphores, mutexes, tasks, etc.), GNU tools, AHB/APB bus architecture, I2C, SPI, UART and bus analysis/debugging tools (Saleae, TotalPhase, etc.), assembly language programming (on any processor), understanding of DMA, ISRs, MMU and experience with C programming in embedded environment and/or Python/C# is desired.
  • Digital and Mixed Signal Circuits Analysis and Design experience
  • Experience with circuit analysis and design and CAD schematic.
  • RTL design using Verilog or SystemVerilog, design of state machines, data paths, Logic synthesis and timing constraints

Additional Information

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class. 

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page

Additionally, we consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.


We want you to be well and thrive. Our global benefits package includes:

  • Healthcare coverage
  • Retirement Plans
  • Employee Stock Purchase Program
  • Wellness perks
  • Paid parental leave
  • Paid time off
  • Learning and Development resources

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.

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