DevOps Engineer, iOS Mobile Developer Experience

  • Full-time

Company Description

Since we first opened our doors in 2009, the world of commerce has evolved immensely – and so has Square. After enabling anyone to take a payment 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, run a busy kitchen, book appointments, engage loyal buyers, and hire and pay staff. And 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 all in one place.

Today, we’re a partner to sellers of all sizes – large, enterprise-scale businesses with complex commerce operations, sellers just starting out, as well as merchants who began selling with Square and have grown larger over time. As our sellers scale, so do our solutions. We all grow together.

There is a massive opportunity in front of us. We’re building a business that is big, meaningful, and lasting. And we are helping sellers around the world do the same.

Job Description

The iOS Mobile Developer Experience (MDX) provides reliable Mac compute infrastructure and related services to support continuous integration (CI) for Square’s iOS applications. Providing reliable compute infrastructure covers a broad set of responsibilities including: estimating capacity requirements, coordinating contractors to set up physical machines, installing the latest OS and software, building integration with other Square systems, gathering performance metrics to drive system improvements, and developing disaster recovery (DR) strategies. MDX is also responsible for evaluating and developing MacOS virtualization strategies to support increased scale while keeping costs under control.

You will use your DevOps skills as part of a small, focused, but critical team responsible for keeping hundreds of Mac minis and Mac Pros running the latest operating systems, compilers, and related tools; as well as Linux-based Jenkins servers which schedule CI jobs onto those Macs. You will work closely with the iOS MDX (Mobile Developer Experience) team to understand requirements of the iOS build pipeline and tools and support CI infrastructure development efforts.

What you will do: 

  • Own (as part of a team) the configuration code; work closely with internal customers to identify requirements and make the necessary changes to configuration code including tests; manage deployment of changes.

  • Maintain system uptime for an internal Jenkins instance and supporting Linux-hosted services.

  • Contribute AWS and EC2 expertise and best practices for a cloud-hosted Mac CI migration, partnering with other vendor and engineering teams as needed.

  • Gather and analyze system metrics to identify and address problematic machines.

  • Coordinate with our site operations team for occasional maintenance of on-premises hardware in our datacenter.

  • Coordinate with other platform teams as part of cross-functional projects and migrations: network engineering, security, IT, other CI teams.

  • Monitor and improve DevOps tools and processes, automate mundane tasks, and improve system reliability by implementing self-healing.

  • Communicate technical designs in writing and in person to multiple technical audiences.

  • Participate in the team on-call rotation for issues with CI systems stability.

  • Work with world-class, experienced, and dedicated engineers.



  • Passion for about continuous integration and accelerating development velocity through systems optimization and architecture design
  • Working DevOps knowledge including configuration management tools (e.g. Ansible, Chef, Puppet, etc.).

  • Knowledge and experience working with Amazon cloud technologies, specifically EC2.

  • Experience deploying changes to production environments

  • Ability to work independently to deliver on a schedule without sacrificing quality.

  • Comfort with a higher-level interpreted language such as Ruby or Python, or compiled such as Go/Rust, and Bash.

  • Network and security generalist experience: familiarity with DNS, TCP/IP, tcpdump/Wireshark, firewalls, SSH, TLS and certificates.

  • A strong desire to continue learning; eagerness to share your ideas, and openness to those of others. Quickly and easily articulate issues and what needs to be done to resolve them.

  • Knowledge of iOS build toolchain is a plus.

Technologies We Use

  • Languages and tools: Ruby, Bash, Bazel, Python

  • Operating Systems: macOS, Linux

  • Configuration Management: Ansible

  • Platforms: Ruby on Rails, AWS, Kubernetes

Additional Information

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.

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