Senior Software Engineer (Remote or Hybrid), Marketing Technology Platform

  • Remote, US, United States
  • 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 Marketing Technology Platform team (MarTech) is rapidly expanding with an abundance of growth and impact opportunities.  As a Software Engineer on MarTech, you will have the opportunity to work on mission-critical marketing and technology initiatives behind Square’s traffic, conversion, and analytic workstreams. As part of the team, you will often solve cross-functional challenges and work with other teams' codebases. You will have the opportunity to work on a wide range of high-impact projects including experimentation solutions, identity resolution, privacy law compliance, conversion optimization, site performance monitoring and optimization, insights and analytics, and data monitoring pipelines. 

Prior marketing technology experience is not required, but one should be excited to learn the art and science of Digital Marketing.


As a Senior Software Engineer you will:

  • Given a business problem, create a technical strategy and deliver with limited guidance

  • Have high attention to detail, work closely with business and technical partners to create meaningful change

  • Influence your team's software architecture and influence related team's architecture as well 

  • Solve complex architecture and business problems. Your solutions are extensible and you work to simplify, optimize, and remove bottlenecks

  • Design and code; your solutions yield significant performance, availability, and business value

  • Focus on end to end architecture

  • Successfully launch software for the business and resolve architectural deficiencies

  • Lead projects to improve engineering, test, and operational excellence best practices on your team

  • Know your team's architecture in detail and make technical trade-offs between short-term team needs and long-term business needs

  • Enjoy solving cross-functional problems and working collaboratively

  • Empathy for your customers and colleagues

  • Strong communication skills

You have:

  • 5+ years of experience contributing to the system design or architecture (architecture, design patterns, reliability, and scaling) of new and current systems.

  • Experience with Infrastructure as Code and in automated delivery of code and infrastructure via the development of CICD pipelines

  • Experience with performance testing and optimization 

  • Experience building an automated integration test suite

  • Experience working with containerization technologies using Kubernetes, Docker, or AWS ECS

  • Experience shipping fast, reliable, real-time applications using modern development technologies leveraging a test-driven development pattern

  • Are highly collaborative, you love participating in code reviews, and you enjoy upbeat discussions about architecture, design, and user experience. You're also comfortable working with others who are not engineers. 

  • Love to experiment and tackle problems. You’re product-minded and growth-focused. You’re happy to question assumptions and back your recommendations with data

  • Have a high sense of ownership, invention, high judgment, strong bias for action, and dive deep

  • Ability to improvise and develop creative solutions when common approaches fail

  • Perpetual curiosity and passion for honing and sharing your craft

Technologies we use and teach at Square:

  • Ruby / Rails, React, Java, Golang, Python, Protocol Buffers

  • MySQL, JanusGraph, AWS, GCP

  • Javascript, Ember.js, ES6, SASS

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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