Senior iOS Engineer, Cart Platform

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
Square's purpose is economic empowerment. Since the company's beginning, we have been helping people start and manage their own businesses.
The Cart Platform team works at the heart of Square's Point of Sale ecosystem, empowering sellers with cart-building tools that aim to be intuitive, consistent, and efficient. This team works on a suite of products that serve as the central command for every sale made by sellers around the world. As an iOS engineer on this team, you will build best-in-class Swift & Objective-C code that is run millions of times every hour, providing accurate and performant checkout experiences to Square merchants. Join us in shaping the future of Square by empowering sellers to thrive in an increasingly complex marketplace!
You will:

• Lead the architecture, design, and implementation of critical features within the Cart Platform.
• Represent the team in architectural discussions and stakeholder conversations, serving as a bridge between our team and the broader organization.
• Help shape the future of our codebase by building flexible, extendable, and reusable components.
• Foster a culture of engineering excellence and mentor engineers of all experience levels.
• Hold yourself and your teammates to the highest standard of engineering excellence, with unwavering attention to product reliability.
• Work with product managers, designers, and data scientists to shape the future of the Cart Platform at Square.
• Help contribute to a culture of positivity, psychological safety, and inclusivity within the team.

Qualifications
You have:

• 8+ years of iOS software engineering experience, developing scalable production software and an excellent command of engineering fundamentals.
• Proficiency in Swift and/or Objective-C.
• Proficiency in native iOS development using standard tools and frameworks.
• Experience working in complex technical projects, e.g. cross-team programs.
• An ability to lead and mentor software engineers to deliver solutions while fostering growth.
• A passion for building mobile products at all levels - from the low-level architectural decisions to the individual pixels.
• A desire to build products that our merchants will depend on every day to run their business.

Qualifications
You have:

• 8+ years of iOS software engineering experience, developing scalable production software and an excellent command of engineering fundamentals.
• Proficiency in Swift and/or Objective-C.
• Proficiency in native iOS development using standard tools and frameworks.
• Experience working in complex technical projects, e.g. cross-team programs.
• An ability to lead and mentor software engineers to deliver solutions while fostering growth.
• A passion for building mobile products at all levels - from the low-level architectural decisions to the individual pixels.
• A desire to build products that our merchants will depend on every day to run their business.