John Labanca
Staff Software Engineer at Block
Atlanta, Georgia, United States
Summary
🤩
Rockstar🎓
Top SchoolJohn Labanca is a Staff Software Engineer and seasoned technology leader with over two decades of experience building and scaling high-availability systems, from architecting UI components at Google to leading 60+ person engineering organizations at Block and Zapier. He blends deep hands-on engineering—founding a serverless SaaS for real estate analytics and contributing backend examples for Square’s Connect API—with proven organizational design skills that transform startup chaos into operational excellence. At Block and Zapier he delivered platform-first strategies, owned CIAM and merchandising at massive scale, and launched generative-AI onboarding and strategic billing migrations that freed engineering capacity. He’s equally comfortable writing Node.js microservices and defining security baselines, having driven a 10x performance improvement and instituted company-wide incident response practices. Based in Atlanta with an MBA and a CS degree from Georgia Tech, he seeks roles where technical vision, mentorship of senior talent, and business-aligned execution intersect.
13 years of coding experience
22 years of employment as a software developer
Master of Business Administration (MBA) Business Administration and Management General, Master of Business Administration (MBA) Business Administration and Management General at Georgia Institute of Technology
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (9)
javas10
apiconnect10
square-connect10
api10
apidoc10
java10
protobuffer9
protobuf9
develop9
Programming languages (8)
Github contributions (5)
square/connect-api-examples
Mar 2017 - Aug 2017
Code samples demonstrating the functionality of the Square Connect API
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 commits in 4 months
Contributions summary:John primarily worked on developing the Square Connect API examples. Their initial contribution involved setting up the project with proto files and Java code. They also fixed copyright notices. Furthermore, they added several examples that demonstrated the usage of the API, including features to retrieve catalog objects, list discounts, and apply taxes to all items, switching the project to use the Connect Java SDK and including a cleanup feature.
square-connect
square/catalog-api-demo
Jul 2017 - Aug 2017
Demo app providing examples of common Catalog API interactions.
Contributions:4 commits, 24 PRs, 35 pushes in 1 month
apidemo-appapi-cataloginteractionscatalog
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