Senior Software Engineer, Accounts & Security

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

Square’s purpose is economic empowerment; since the company’s beginning, we have been helping numerous people start and manage their own businesses. During the pandemic, many small businesses struggled, as they scramble to adapt to going online to reach their customers.

The Identity Platform team cultivates trusted relationships with Sellers and businesses across the globe and supports their growth by seamlessly connecting them to the Square ecosystem.  We do this by providing authentication and authorization mechanisms and delivering solutions that safeguard access to data while providing account-lifecycle management and session security.  We also provide platform solutions for onboarding Sellers to the ecosystem, which includes verification of identity and business data, regulatory screening, qualifying their activation for payment methods, and supporting identity management throughout the lifecycle with Square. We strive to build an Identity platform that empowers both teams at Square and an ecosystem of third party developers.

We are looking for a Software Engineer, for the Accounts & Security team within Identity Platform. This team builds and scales all our customer authentication mechanisms. Authentication is one of the most important components of our platform, making scaling and reliability a top priority for this team. As a Software Engineer on Accounts & Security, you will play a pivotal role in the design and development of new authentication methods to serve a variety of use cases. You will have a chance to work on a range of complex problems with a high degree of visibility and impact in the organization.

You Will

• Be responsible for the successful delivery of projects including coordination, risk management, design, development, testing, rollout and maintenance by leading within and across different teams and disciplines
• Collaborate with other engineering leaders in defining long-term architecture strategies, including soliciting feedback and building consensus
• Analyze and resolve technical obstacles for the team while being responsible for the long-term quality of the team’s codebase and systems
• Lead by example to foster a culture of positivity, psychological safety, and inclusivity within the team
• Drive broader knowledge sharing while also sharing technical expertise with other engineers through individual mentorship and providing meaningful feedback on designs and code
• Help maintain and improve the processes we use to manage our work
• Participate in the team on call rotation

You Have

• 8+ years of industry experience designing and building backend systems using Go, Ruby, or an equivalent language
• A high degree of comfort and a track record of success in high-ambiguity problem spaces
• Experience with customer-facing identity solutions (authorization, authentication, verification, or onboarding workflows) 
• A strong sense of customer empathy and an interest in influencing the direction of a platform

Technologies We Use and Teach

• Go / Ruby / Kotlin / MySQL / DynamoDB / Graph Databases / gRPC / jOOQ / Redis / Kafka / git / Bazel / AWS / Temporal

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 an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally pro