Senior Software Engineer, GraphQL Platform

Senior Software Engineer, Graph

QL Platform

Join to apply for the Senior Software Engineer, Graph

QL Platform role at Block
.

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more.

Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

Software Engineers on the Graph

QL team help build and scale our Graph

QL infrastructure that powers applications across Block's ecosystem. As a centralized platform team, we maintain the Graph

QL infrastructure that connects and empowers product engineering teams across all of our brands including Square, Cash App, and other business units. This position is ideal for an experienced engineer passionate about API design, distributed systems, and building developer platforms that empower engineers to deliver products.

• Lead the design and implementation of core Graph
  
  QL platform features, including API gateway capabilities, schema management tools, and developer SDKs
• Drive platform architecture decisions and implement solutions that scale across Block's ecosystem
• Collaborate with product teams across Block (Square, Cash App, etc.) to understand their needs and build solutions that promote both internal and external API capabilities, serving as a technical leader in Graph
  
  QL best practices as you mentor other engineers across the organization
• Proactively identify, design and implement performance monitoring, optimization, and reliability improvements for the Graph
  
  QL platform

• 8+ years of professional software engineering experience
• Strong knowledge in one of Typescript or Kotlin (or a similar language)
• Experience designing, building, and maintaining API platforms - including developer tools, developer-focused SDKs, and documentation (not strictly with Graph
  
  QL!)
• Experience driving technical decisions across an organization, mentoring engineers, and generally striving for technical excellence within your sphere of influence
• Contributed to scaling and operating distributed systems handling high traffic volumes
• Appreciation for details and helping teams collaborate more effectively and efficiently
• Kindness, maturity, and empathy for your end-users and colleagues

You’ll have a gentle yet purposeful onboarding experience that respects your expertise while giving you time to learn and grow comfortable with our systems, processes, and people. We believe that even experienced engineers deserve a supportive environment when joining a new team!

• Gain familiarity with the inner workings of our Graph
  
  QL platform, exploring our Apollo-powered federated architecture and learning about the various internal teams that rely on it, while also learning how you’ll contribute to scaling our platform 100M+ daily requests by the end of 2026
• Deploy your first meaningful changes to production with the right amount of guidance and support

• Share your expertise and perspective in architectural discussions, as you begin mentoring team members in your areas of strength
• Take ownership of a significant component within our platform ecosystem, with continued support from teammates who help you navigate our team’s unique set of challenges
• Join our on-call rotation with plenty of shadowing opportunities and a supportive escalation path

• Become more comfortable operating as a Graph
  
  QL ambassador to the rest of Block engineering, identifying use‑cases across the company where Graph
  
  QL can solve engineering problems for our customers
• Lead the design and implementation of new platform capabilities with the collaborative support of the team
• Drive initiatives that improve our systems and our team…