People Matter

Senior Software Engineer



Software Engineering
Dublin, Ireland
Posted on Wednesday, May 29, 2024

Company Description

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 through Afterpay, 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.

Job Description

Risk Engineering works to protect Square and our customers from fraud and payment disputes. We keep our customers safe while €20B+ flows through Square annually, annually, and we allow the entire company to take risks and grow. To do this, we build systems to detect and respond to potential threats, provide outstanding tools to agents for investigating events, and give our customers seamless web and mobile experiences to manage and fight disputes. Our mission is to protect Square, protect our customers, and make a complicated and sometimes painful process understandable to all.

This is an exciting opportunity to join the new Risk Platform Foundations team. In this role you will work with a team of full stack engineers focused on building the core platform and tools that sit at the heart of the Risk organization.

You will be responsible for maintaining and upgrading a number of key services that are essential to keep the Square ecosystem safe as well as helping develop the next generation Risk platform to ensure that our systems scale to meet Square’s growth.


You will:

  • Build the core technical infrastructure to support the Risk needs across all of Square.
  • Work with partner teams across Square to develop new features and services.
  • Build systems that manage customer’s sensitive data and hold Square to the highest standards for security and compliance.
  • Build tools that provide great experiences for our partners.
  • Design fault-tolerant systems so that the team can be brave, most fast, and break things, without ever showing a negative impact to our sellers.
  • Use your technical and soft skills to mentor others across Square.

You have:

  • 3+ years of professional software development and system design experience.
  • Several years experience in Java or an equivalent.
  • Passion for being responsible for your work from the beginning to the end of a project’s life cycle.
  • Excellent software engineering knowledge and ability to provide technical mentorship and direction to others.
  • Data-oriented mindset: you want your work to be measured and impactful.
  • Customer empathy: you understand your customer’s requirements.
  • Software development skills and computer science fundamentals.
  • Interest in working in a modern development environment using the latest Cloud and DevOps technologies.
  • Experience working with risk or financial systems is a bonus.

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, based solely on the core competencies required of the role at hand, and without regard to any 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.


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.