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Square // credit card processing & point of sale solns
, Full Time       Posted: Thursday, March 05, 2020
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Company Description

We believe everyone should be able to participate & thrive in the economy. So we're building tools that make commerce easier & more accessible to all. We started with a little white credit card reader but haven't stopped there. Our new reader helps our sellers accept chip cards & NFC payments, & our Cash app lets people pay each other back instantly. We're empowering the independent electrician to send invoices, setting up the favorite food truck with a delivery option, helping the ice cream shop pay its employees, & giving the burgeoning coffee chain capital for a second, third, & fourth location. Let's shorten the distance between having an idea & making a living from it. We're here to help sellers of all sizes start, run, & grow their business-and helping them grow their business is good business for everyone.

Job Description

Square's rapidly growing financing platform, Square Capital, has revolutionized the way businesses & consumers obtain the funding needed to achieve their goals.

Unlike traditional business financing products, Square Capital offers are extended to pre-qualified sellers with no application process, funds are deposited as soon as the next business day, & repayment happens as a fixed percentage of daily card sales. Since the product launched in 2014, Square Capital has extended more than $4.5 billion to over a hundred thousand sellers.

As a software engineer on Square Capital, you will be design, build, & own the services & infrastructure that power our products. You will build beautiful web applications, sophisticated financial systems, & highly available services that form complex distributed systems. If you love delivering beautiful software that improves the lives of millions of consumers & business owners, we want to work with you!

You will:

  • Design fault tolerant systems so the team can be brave & move fast, without ever negatively impacting our customers
  • Develop clear & secure APIs that integrate multiple web/app clients with server.
  • Build well-designed, reusable system patterns & components.
  • Massively scale our existing lending platform, from the datastores to the distributed coordination mechanisms depending on them
  • Build systems that collect & maintain customers' sensitive data, while holding Square to the highest standards for security & compliance
  • Provide mentorship to engineers & cross-functional partners to improve engineering quality & increase team effectiveness
  • Participate in ongoing training to maintain current knowledge of BSA/AML & perform BSA/AML duties as required by job function.


You have:

  • Interest in working full-stack, from developing frontend web applications to implementing business logic & optimizing database transactions
  • Passion for building products that are beautiful outside & inside - from their user experience to their robust & elegant design.
  • 3+ years of experience designing, building, & operating complex systems with a variety of technologies & programming languages

Technologies we use & teach:

  • Modern web services & applications built with a variety of frameworks, languages & databases (Ruby on Rails, Go, Mysql, DynamoDB)
  • Software engineering tools: testers, linters, package management, continuous integration
  • Robust server architecture built on our own data center, but we are expanding more & more on the cloud with AWS services

Additional Information

At Square, we value diversity & always treat all employees & job applicants based on merit, qualifications, competence, & 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 & preferred method of contact, & we will respond as soon as possible.

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