Senior Software Engineer (Backend/Fullstack), Square for Retail

Square, New York NY, US

Square works for every business.

Duration: Full-Time

Retailers have struggled too long with clunky, outdated and disconnected tools. Even as mammoth Retail and e-commerce forces threaten to disrupt smaller merchants, we are empowering those merchants with simple and elegant solutions to complex problems - like predictive analytics and fluid, omni-channel capabilities to meet customers wherever they are - to always make the sale. Square for Retail is one of Square’s three vertical Point of Sale solutions, focused on serving upmarket sellers. We offer a purpose-built solution to help Retailers run all aspects of their business, including complex workflows in Square Dashboard (web), a custom built Retail Point of Sale for Android and iOS. Our solution is built for retail businesses with larger catalogs, with tools for advanced inventory management and multi-channel orders. 

As a senior software engineer on the Retail Inventory team, you will make high quality contributions while also guiding junior engineers to do the same. You'll work cross functionally with our product and design partners to build services that robustly serve elegant user experiences that solve complex problems: saving sellers time and reducing anxiety as they strive to manage and understand their inventory – logistics that are at the very heart of every retailer’s business.

You will:

  • Leverage your expertise in server technologies to partner with and empower a full stack group of server, web frontend, Android, and iOS engineers building solutions together that meet our sellers’ challenges.

  • Deliver highly impactful tools for Retail sellers to manage and understand their inventory.

  • Be responsible for the entirety of your features; including API design, implementation, automated testing, and roll out.

  • Create and maintain technical systems and write concise, well-organized code and sensible tests.

  • Achieve the levels of reliability and correctness that merchants and buyers expect when they entrust Square with their financial and business information.

  • Collaborate across teams in an agile environment to deliver solutions that solve complex business problems.

You have:

  • 5+ years of software engineering experience developing scalable production software and an excellent command of engineering fundamentals.

  • Bachelor's degree in Computer Science or equivalent practical experience.

  • Unwavering commitment to customer experience and the quality of your work.

  • An eagerness to share your ideas, and openness to those of others.

  • Empathy for your customers and colleagues.

  • Motivation to build beautiful, refined and intuitive products.

  • Curiosity, and a desire to learn and teach.

  • Proficiency in server technologies.

  • Experience with Go or Java preferred, but not required.

  • Experience with web frontend technologies preferred, but not required.

Technologies we use and teach:

  • Go, Java; JavaScript ES6

  • Protocol Buffers, gRPC, Kubernetes, Terraform, SQS; Ember.js

  • AWS RDS, MySQL, Elasticsearch, Snowflake

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.