Senior Software Engineer - Merchant SMB

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

Company Description

Afterpay’s mission is to power an economy in which everyone wins, to play fair, trust people and reward them for doing the right thing. We are obsessed with our product and we see and feel the impact of our work as more and more people gain financial freedom and retailers grow across the globe. 

Offered by more than 70,000 of the world’s best retailers and has more than 14 million active customers globally. Top fashion and beauty retailers across the globe - including  Ebay, The Iconic, Myer, Foot Locker, Adore Beauty, Mac Cosmetics, Kathmandu and many others. We also have offices across the globe including New Zealand, USA, China, UK and Europe!

Job Description

You'll be working on the Merchant side of Afterpay's business, supporting SMB (small/medium businesses) throughout their lifecycle with Afterpay - from applying to joining to transacting to growing, we cover it all. Our team supports the end-user applications as well as the microservices behind the scenes - this is a full-stack, product-focused, user-facing role. You'll work with a smart set of team members who are very motivated to keep learning and continuing to grow each other in a supportive way.

Technologies you'll be exposed to:

  • Frontend

    • React and Redux (including hooks) in TypeScript

    • React Testing Library and Cypress

    • Material UI and Figma

    • Webpack 5 (including some micro-frontends)

  • Backend

    • Python (Flask) and Celery

    • Kotlin (Spring / Gradle)

    • PostgreSQL

    • Kafka

  • Infra/DevOps

    • Heroku and AWS

    • Docker, Kubernetes, Terraform, and Helm

    • Buildkite for CI/CD

    • Git + Github


What you'll bring:

  • 5+ years of full-stack software engineering experience

  • Strong proficiency in at least one of our core languages (TypeScript, Python, or Kotlin)

  • Comfort providing leadership as an individual contributor, and driving best practices on a team

  • Ability to lead by example and actively address problems you identify, and give & receive feedback with regard for emotional and technical concerns

  • Desire for a collaborative engineering culture - meaning, you're comfortable pairing with others and you actively enjoy teaching concepts, technologies, and best practices to other engineers (especially those who are less experienced!)

  • Kindness, maturity, and empathy for your colleagues and end-users

Additional Information

Onboarding Process:

Just because you're experienced, that doesn't mean we expect you to hit the ground running! You'll have a gentle, intentional onboarding experience and will have time to learn and grow comfortable with our systems, processes, and people.

Within 1 month, you'll:

  • Get assigned and set up recurring meetings with your onboarding mentor

  • Learn about the business and dive into the inner workings of our platform and our codebase

  • Tackle your first ticket by committing changes and deploying your code to production

  • Help the team by performing code reviews

Within 3 months, you'll:

  • Establish strong working relationships with your peers and leaders, practicing transparency and visibility in your progress against areas of focus

  • Join the on-call rotation and help the team pay down technical debt and improve reliability

  • Gain a more robust understanding of the needs of the product and become more comfortable with diagnosing problems

  • Deliver on your first project and help iterate on meaningful customer outcomes

  • Solicit feedback from your peers, including other engineers and teammates in your product/design team, and support the team through thoughtful feedback

Within 6 months, you'll:

  • Be equipped to ship large features and improvements with minimal guidance or support from other team members

  • Fortify relationships with cross functional team members as well as broaden your connections across the organization

  • Represent the team and be a significant influence in the overall vision and long term goals for the team and product

  • Grow into a subject matter expert in an area that interests you, and leveraging this ownership to make a significant impact to our team and business

  • Become a partner to engineering leadership as you help level up the team and continually improve the reliability and observability of our system, especially by advocating and identifying technical debt or impediments that slow down the team's ability to deliver code to production





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.

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