Staff Software Engineer (Fullstack), Square Invoices

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

The Services Server team is dedicated to empowering Home & Repair and Professional Services sellers with tools that allow them to manage their businesses on the go. We own and develop Square Invoices, which enables merchants to send invoices and receive payments remotely. Our team also builds a suite of solutions, including Square Contracts for agreement management, Square Virtual Terminal for accepting payments directly from a desktop, and project workflow tools for seamless operations. In this role, you’ll contribute to shaping the team’s roadmap and strategy, playing a key part in driving our server team’s success toward ambitious growth goals.

Square Invoices is the easiest way for merchants to close sales and collect payments remotely. Our customers rely on our products because they are well-designed, easy to use, and integrated with their business. We are a full-stack product oriented team, spanning across engineering, design, product, data science, and marketing. You'll implement management’s  roadmap and strategy decisions and will play a critical role in helping the team accomplish our industry-leading growth goals.

Our team is focused, fast-moving, and rapidly growing with an abundance of growth and impact opportunities. We focus on building the best tools to help our merchants close sales and get paid quickly, anywhere, at any time. At the same time, we are doing this in an efficient and scalable way, making smart choices about how to automate critical functions for our merchants.

You Will

• Lead the design, development, and implementation of complex software systems and migrations (often crossing organizational boundaries).
• Actively contribute to the codebase as an individual contributor, ensuring high-quality software and efficient development processes.
• Participate in code and design reviews, providing constructive feedback and ensuring high-quality deliverables.
• Collaborate closely with engineers, designers, and product managers to design, build, and iterate on world-class product experiences, helping to define product scope and design.
• Be responsible for the entire lifecycle of feature development, including planning, design, implementation, automated testing, and rollout.
• Hold yourself and your teammates accountable to the standards of engineering and ethics that enable Square to safely move billions of dollars in payments, allowing our customers to trust us with their sensitive data.
• Help empower a team of engineers by mentoring individuals, cultivating pragmatic engineering decision-making, and leveraging your technical expertise to constantly raise the quality of design decisions and implementation by holding the team to a high standard.
• Partner with Web, iOS, Android, and other Server engineers to ship features.
• Build high-availability and resilient systems that can accept and report payments no matter the network or device conditions.
• Drive innovation and identify opportunities for process improvements and new technologies to enhance the platform’s capabilities.

You Have

• 8+ years of industry experience in software development.
• Strong technical execution skills with a proven record of leading large, multi-year projects to success.
• Strong understanding of software architecture, design patterns, and best practices, including software development methodologies such as Agile and Scrum.
• Experience with cloud-based technologies and platforms such as AWS, Azure, or Google Cloud (we use AWS).
• Demonstrated ability to collaborate with cross-functional teams and manage relationships with internal and external partners.
• Ability to thrive in a bottom-up environment; a self-starter who does not need a lot of direction.
• Strong communication and interpersonal skills, with the ability to effectively communicate complex technical concepts to both technical and non-technical stakeholders.
• Experience in mentoring and developing the skills of junior team members.

Technologies We Use and Teach

• Frontend: Ember, Typescript, React
• Backend: Ruby on Rails, Java
• MySQL database
• Redis for job queue + caching
• Elasticsearch for real-time search + analytics
• AWS for cloud infrastructure