Senior Software Engineer - Hardware Developer Experience

Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square. After enabling anyone to take payments and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn’t work together.

So we expanded into software and started building integrated, omnichannel solutions – to help sellers sell online, manage inventory, offer buy now, pay later functionality, book appointments, engage loyal buyers, and hire and pay staff. Across it all, we’ve embedded financial services tools at the point of sale, so merchants can access a business loan and manage their cash flow in one place. Afterpay furthers our goal to provide omnichannel tools that unlock meaningful value and growth, enabling sellers to capture the next generation shopper, increase order sizes, and compete at a larger scale.

Today, we are a partner to sellers of all sizes – large, enterprise-scale businesses with complex operations, sellers just starting, as well as merchants who began selling with Square and have grown larger over time. As our sellers grow, so do our solutions. There is a massive opportunity in front of us. We’re building a significant, meaningful, and lasting business, and we are helping sellers worldwide do the same.

The Role

Hardware Developer Experience (HDX) is a growing internal team that serves developers working with and testing hardware devices. We develop internal software products, firmware tools, test software infrastructure, and developer infrastructure to serve our internal customer teams. Some of our customer teams include the Android platform teams, firmware teams, Quality Assurance (QA) teams, and app development teams.

As a Senior Software Engineer on the team, you will play a critical role in enhancing the productivity and efficiency of developers working with Square hardware devices. You will contribute to the development and maintenance of internal tooling, libraries and infrastructure enabling software engineers developing for hardware that we build. Your work will directly impact the quality and reliability of Block's hardware products. You will report to the engineering manager for the team. You will have the opportunity to work on impactful projects that directly contribute to the success of Block's hardware products and the broader ecosystem.

You Will

• Develop and maintain software test platforms for hardware-in-the-loop testing, ensuring high reliability and performance.


• Oversee the entirety of your features, including component design, implementation, automated testing, rollout, documentation, and maintenance.


• Provide technical support and triage issues related to all tools Hardware DX owns.


• Occasionally contribute to and review local and cloud developer environments.


• Occasionally contribute to and review internal-facing web applications.


• Give technical direction to projects


• Hold yourself and your teammates accountable to the high standards of engineering that enable Square to safely process billions of dollars in payments and protect sensitive customer data.


• Work closely with other engineers, technicians, and product managers to develop excellent product experiences

You Have

• 
  
  
  
  • 8+ years of relevant software development experience (or additional academic experience).
  
  
  • Proficiency in Python, as it will be the primary language used.
  
  
  • Strong computer science fundamentals including Linux/Unix systems, networking protocols, data structures, algorithms, and hardware-software interfaces that enable you to debug complex issues across the software and hardware boundaries.
  
  
  • The ability and passion to discover and drive projects that increase developer velocity.
  
  
  • Strong ability to collaborate within the team and with adjacent teams, including experience with version control, release management, and coordinating dependency updates across multiple repositories.
  
  
  • A passion for building and shipping internal tools and products and working directly with internal customers to rapidly improve their development experience.
  
  

  Even better:

  
  
  • Experience with Android Open Source Project (AOSP) development and communication protocols.
  
  
  • Experience with shipping software for Linux and MacOS (arm, x86).
  
  
  • Experience with Kotlin for scripting and testing tools.
  
  
  • Familiarity with CI/CD platforms such as Buildkite and Jenkins
  
  
  • Experience with cloud technologies like Terraform, Docker, and AWS ( EC2).
  
  

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 an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and "fair chance" ordinances.

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 .

While there is no specific deadline to apply for this role, U.S. roles are typically open for an average of 55 days before being filled by a successful candidate. Please refer to the date listed at the top of this job page for when this role was first posted.