Product Design Engineer

  • San Francisco, CA
  • Full-time
  • Alternate Location: Oakland, United States

Company Description

Square builds common business tools in unconventional ways so more people can start, run, and grow their businesses. When Square started, it was difficult and expensive (or just plain impossible) for some businesses to take credit cards. Square made credit card payments possible for all by turning a mobile phone into a credit card reader. Since then Square has been building an entire business toolkit of both hardware and software products including Square Capital, Square Terminal, Square Payroll, and more. We’re working to find new and better ways to help businesses succeed on their own terms—and we’re looking for people like you to help shape tomorrow at Square.

Job Description

You Will:

  • Work closely with Industrial Design & Product teams to architect and refine new product concepts. 
  • Develop rapid prototypes using common prototyping techniques such as 3D printing, machining, etc. 
  • Design high volume & high cosmetic plastic and metal parts. 
  • Work closely with cross functional teams such as Electrical Engineering, Factory Test, Factory Quality, and our Operations teams to design and validate new products. 
  • Forge strong partnerships with our CM's to ensure successful builds. 
  • Effectively communicate your designs in CAD, Keynote, or PowerPoint, and in front of a group. 

Unique aspects to the Square Product Design team: 

  • Ownership of elements of product and engineering program management especially in early project phases. 
  • Responsible for tooling bring up and manufacturing design engineering of all new tools and processes. 
  • Incorporating security elements in our designs for tamper detection and prevention. 
  • Working with our CM partners in both OEM (Original Equipment Manufacturing) and JDM (Joint Design Manufacturing) models. 
  • Responsible for reliability testing including putting together a validation plan, leveraging our CM partner’s DQE teams to perform the testing, and reviewing, presenting and approving the data. 
  • Responsible for the sustaining in-production products including early field failure analysis (EFFA), design improvements, rework, and setting ongoing reliability testing specs (ORT) 


You Have:

  • BS or MS in Mechanical Engineering or Product Design 
  • 3+ years of relevant industry experience
  • Proficiency in industry standard CAD tools - SolidWorks a plus 
  • Tooling experience, especially parts with high cosmetic requirements 
  • In-depth understanding of high volume manufacturing processes and DFM 
  • Extensive experience onsite with contract manufacturers in Asia 
  • Experience in detailed failure analysis 
  • Experience with Finite Element Analysis - a plus 

Products we work on: 

  • Square Register 
  • Square Stand 
  • Square Contactless + Chip Reader 
  • Square Chip Card Reader 
  • Square Magstripe Card Reader 
  • Dock for Square Reader 
  • Many more to come.

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. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us by sending an email to assistance(at) We will treat your request as confidentially as possible. In your email, please include your name and preferred method of contact, and we will respond as soon as possible.


At Square, 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
  • Flexible time off
  • Learning and Development resources