Systems Validation Engineer

  • San Francisco, CA, USA
  • Full-time

Company Description

Since we first opened our doors in 2009, the world of commerce has evolved immensely – and so has Block. After enabling anyone to take a payment and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn’t work together. So we expanded into software and started building integrated, omnichannel solutions – to help sellers sell online, manage inventory, run a busy kitchen, book appointments, engage loyal buyers, and hire and pay staff. And 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 all in one place.

Today, we’re a partner to sellers of all sizes – large, enterprise-scale businesses with complex commerce operations, sellers just starting out, as well as merchants who began selling with Block and have grown larger over time. As our sellers scale, so do our solutions. We all grow together.

There is a massive opportunity in front of us. We’re building a business that is big, meaningful, and lasting. And we are helping sellers around the world do the same.

Job Description

Our hardware team builds the tangible connection to all that is Block. We started with the simple, iconic card reader that turns any phone into a mobile point of sale. Since then, we have expanded our hardware portfolio to meet the needs of more sellers. Although the technology inside our hardware is growing more and more complex, the end goal is always the same: simple, elegant hardware that our merchants are proud to show to their customers.


Systems Engineering is a relatively new team within hardware.  Our goal is to translate the fuzzy world of the customer experience (“WiFi that just works”) to verifiable performance targets for engineering. 
We do this through:

  • Building automated test systems to measure device performance;

  • Working with Product Managers to calibrate these measurements to the customer experience;

  • Translating our learnings into specs and validation plans for future products. 


You will:

  • Create Python scripts to orchestrate various instruments and the unit under test;

  • Analyze characterization data and convert that to meaningful product performance insights;  

  • Dive in to learn the trickiest cross-discipline hardware technologies (e.g. wifi, display, batteries) and help our engineers and product managers understand what matters most to our customers;

  • Pull together hardware engineers, software engineers and product managers to facilitate judgment calls that balance the product experience, cost and time;

  • Help us define the future of Hardware Systems Engineering at Block.


You have:

  • Proficiency in Python scripting;

  • Written software that someone else has used;

  • Created automated hardware + software setups.  (e.g. robotics or instrumentation);

  • Thrived in a fast-paced, fast-changing environment;

  • Created lightweight processes to make your job easier for the next person;

  • The ability to be in our Oakland lab 2-3 days per week.


Bonus points if you have:

  • Experience working with embedded systems;

  • Shipped a successful consumer electronics device;

  • Worked in a variety of company sizes with a variety of technologies;

  • Used statistics to convert piles of data into meaningful insights;

  • Direct experience shipping products that use one or more of these technologies;

    • NFC

    • Wifi

    • Bluetooth

    • Capacitive touch sensors

    • Displays

    • Batteries 

  • Working knowledge of data storage and retrieval.

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, veteran status, 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, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.


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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