Senior Software Engineer, Reconciliation

Square, New York NY, US

Square works for every business.

Duration: Full-Time

The Reconciliation Team tracks the flow of money through Square’s payment ecosystem.  We build services that ingest and process data for our roughly half a billion dollars of daily transactions, to make sure the money ends up in the right bank accounts.

Our team’s projects are high importance, low urgency: we value thoughtfulness and correctness more than speed.  Our work is data-intensive, so if you enjoy understanding and working with data you may find it especially satisfying.

Our tech stack is deliberately “boring” but up-to-date.  We use Kotlin/Java services with backing MySQL databases for their internal state; Google BigQuery to store the transaction data itself and run jobs that efficiently process large volumes of data; and AWS infrastructure for everything else.

You will:

  • Help to design and build our next generation of reconciliation systems, needed to support Square’s accelerating growth in payments and payment methods
  • Work cross-functionally with our card processing, settlement, analytics, finance, accounting, and product teams: this job is very collaborative
  • Leverage our reconciliation data to build insight and early-warning systems which can protect Square and our sellers
  • Implement and operate the reconciliation services which ensure Square’s credibility and hold us to the highest standards of financial reporting and compliance


  • Bachelor's degree in computer science or equivalent practical experience
  • 3+ years experience developing backend services and infrastructure
  • Experience with cloud computing technologies and data platforms
  • Excellent communication and collaboration skills


  • Experience with OLAP databases
  • Interest or experience in payments technology

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, 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, and always assess candidates on an individualized basis.


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.