Manufacturing Test Engineer

  • Seattle, WA, USA
  • Employees can work remotely
  • 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

Square’s Hardware Team builds the tangible connection to Square. We started with a simple and elegant Reader that turns any phone or tablet into a mobile point of sale - and we continue to lead this category with advances in chip card and NFC technology. As we introduce more products, we will meet the needs of more and more sellers with stand-out hardware products, globally. Our hardware engineers are responsible for designing and developing world class hardware products. They understand the subtleties of user interaction, robust communication interfaces, and smart product design.

The Manufacturing Test Engineering team at Square is responsible for making sure that the millions of hardware devices leaving our factories are built according to design and meet (or exceed) customer expectations. We’re a diverse group of engineers that use our unique backgrounds to solve challenging problems in our factories. We dabble in electrical engineering, software, mechanicals and data analysis to understand the design intent of our products and understand how we can translate it to scalable test plans. We are Jacks and Jills of all trades, and we thrive on having a deep systems-level understanding of Square’s hardware products.

You will:

  • Design, build and support board-level and product-level functional testers running in Square’s factories around the world.

  • Write and debug test station software.

  • Understand the meaning of the measurements our test stations are taking, and feed analysis of these measurements back to our hardware design teams.  

  • Become intimately familiar with Square's hardware products and manufacturing processes.

  • Research technologies for our next-generation hardware products.

  • Develop test plans and test-setup prototypes for new technologies.

  • Work with Square’s Electrical Engineering group to ensure our products’ circuits are designed for testability.

  • Work with Square’s Devices Software Engineering group to specify requirements for embedded test access and APIs.

  • Reach beyond the boundaries of Manufacturing Test to make Square’s products better wherever you see the chance.


You are:

  • Experienced working in a technical field for 2-5 years. 

  • Experienced in reading and understanding electronics circuit diagrams and schematics. 

  • Knowledgeable in circuit design at the “maker” level or beyond (e.g. projects like LED controllers, home automation, weather stations, etc.).

  • Excited to work on hands-on projects and to make things work in EE, software, and/or ME realms.

  • Knowledgeable in Python, MATLAB, Labview, and/or similar programming language. 

  • Experienced with hardware lab equipment for test, measurement (e.g. oscilloscope, power supply, DMM, etc.), and/or prototyping (Raspberry Pi, Arduino, 3D printing, powertools, etc.).

  • Enthusiastic to apply methodical engineering problem-solving skills to dig into challenges that are outside of your expertise.

  • Collaborative: have the ability to work as a team, ask questions, and share information to solve problems.

  • Flexible: have the desire to help partner teams when boundaries may be ambiguous.

  • Able to effectively communicate technical information to audiences that include members of various levels of technical expertise.

  • Able and willing to travel internationally 15% when that becomes available (post COVID-19).

Even better:

  • Experience with electronics schematic design and layout.

  • Familiar with board-level (SMT) and product-level (FATP) electronics manufacturing processes.

  • Knowledgeable in statistics. Experience using SQL, JMP, or similar data program.

  • Experienced performing analog measurements (RF, acoustic, optical, etc.) including calibration and control of systematic errors.

  • Experience managing contract manufacturing test engineering partners to drive GR&R, DOE, and Factory Test Dry Runs to prepare for prototype NPI builds.

  • Experience writing clear reports (Build Reports, Station Issue Lists/Material Issue Lists, SOPs).

  • Experienced working on electrical signal integrity in a noisy environment.

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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