Lead Software Engineer (Mobile), Bitcoin Mining

Square, San Francisco CA, US

Square works for every business.

You will be part of the bitcoin mining team in Block that develops bitcoin mining ASIC, bitcoin mining rig; and associated systems, software and infrastructure.In this role, you will lead a team of developers to create mobile apps to promote and aid the mining of bitcoin on Block's devices. You will be hands-on in the design and development of both an IOS and Android application. You will be the first member of the team and in the first 6 months you will recruit 2 staff for development and Test/QA. Growth of the team beyond that will be re-evaluated based on your input and market progress. The Bitcoin HW team is in startup mode which means the goals are being continually re-evaluated. You will be challenged to assess and adjust as necessary to produce a consumer application that functions as an important part of Block's ecosystem of economic empowering tools.


  • Work directly with the Hardware team allowing you to influence the direction of the next generation of mining devices
  • Work with prototyping hardware requires the developer to exercise especially good instincts when debugging as the problem could be in the ASIC, the PCB or the software or any combination of them
  • Lead a team you will have influence on the product and the chance to choose your own team

  • 8+ years of relevant professional experience and team leadership
  • IOS and Android application development experience
  • IOS and Android application deployment experience

You May Also Have (but not required):

  • Knowledge of Bitcoin mining and economics of mining
  • Knowledge of W1 or other bitcoin wallets
  • Cash App interfacing / API
  • Security protocols, especially ECC
  • Wi-Fi interfacing with mobile devices, Wi-Fi Direct
  • Open source development experience
  • Experience with Linux or Unix development
  • Degree in CS, CE, or equivalent practical experience

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.

About Square

We believe the economy is better when everyone has access. When everyone has room to grow. No one should be left out because the cost is too great or the technology too complex. So we’re building easy tools to empower and enrich people. Tools that shorten the distance between having an idea and making a living from it—because we believe in fair and square. We started with a little white card reader but haven’t stopped there. Our new reader helps our sellers accept chip cards and NFC payments, our Cash app lets people send money instantly, and we’re building easy tools for customers, too. We’re empowering the electrician to send invoices, setting up the food truck with a delivery option, helping the clothing boutique pay its employees, and giving the coffee chain capital for a second, third, and fourth location. We’re here to help sellers of all sizes start, run, and grow their business—and helping them grow their business is good business for everyone.


Want to learn more about Square? Visit Square's website.