Senior Software Engineer (Backend), Hardware Wallet

  • San Francisco, CA
  • Employees can work remotely
  • Full-time

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

We're making a hardware wallet for the next 100M bitcoin users. Our goal is economic empowerment -- starting with bringing easy-to-use, reliable self-custody to a global audience. We're assembling a team deeply experienced in an extremely wide range of disciplines, including business, operations, design, software, hardware, security, and so many other aspects of product delivery. Come build the future of crypto-enabling hardware with us!

We are hiring a backend engineer to build the software customers use to interact with our hardware wallet.

You Will:

  • Ship a non-custodial, hardware-enabled bitcoin wallet to a global audience

  • Design, build, deploy, and sustain a wide range of backend secure and reliable services supporting the wallet -- multisig key management and provisioning, blockchain interaction, recovery processes, logistics, and more

  • Make key architecture and platform choices, leveraging existing Square infrastructure and best practices where appropriate and and forging a new path when our unique needs require it

  • Collaborate with mobile and firmware engineers, product managers, and infrastructure and service teams throughout the company

  • Own testing, observability, and maintenance for the services you and the team create

Qualifications

You Have:

  • 6+ years experience with the full life-cycle of critical production services - ideally in one of java/go/ruby and on AWS

  • Experience developing for bitcoin/cryptocurrency applications, or with key management and other cryptographic applications

  • Note: with this role, we are hiring for multiple positions - and not all of the initial team needs to have this prerequisite

  • Empathy for your customers and colleagues

  • Interest in the opportunities and challenges that come with building a new product area from the ground up

  • No location requirements, occasional travel to U.S. and international manufacturing sites may be required. GMT-5 (Eastern) to GMT-10 (Hawaii) strongly preferred for engineering roles.

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)squareup.com. 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.

Perks

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
  • Paid time off
  • Learning and Development resources

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.

Perks

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 TBD54566975, 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. TBD54566975 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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