Latest Backend Engineering jobs at Square

Staff software engineer leading hands-on development and technical direction for a global card-issuing platform. The role requires deep card-network expertise, direct connectivity and certification experience, and strong software engineering experience in highly reliable payments systems.

Build and maintain backend systems powering Cash App Taxes, translating complex federal and state tax requirements into reliable filing and e-file functionality. The role requires 4+ years of software development experience, strong system design skills, and a bachelor's degree or equivalent experience.

Build and operate backend services for Block’s card-issuing platform, covering issuance, transaction processing, and disputes at massive scale. The role requires 3+ years of software development experience, production ownership, AI fluency, and a bachelor's degree or equivalent.

Build backend services, workflow engines, integrations, and automation for foundational financial platforms. The role requires 6+ years of complex-systems experience, distributed-systems expertise, regulated-systems knowledge, and an AI-first engineering approach.

Leads technical strategy and hands-on server engineering for Cash App Banking, driving scalable architecture, infrastructure improvements, and cross-functional technical decisions. Requires 12+ years of software development experience, large-scale delivery leadership, and strong mentoring skills.

Lead technical strategy and architecture for Cash App's Banking server engineering team. Mentor engineers, drive cross-functional decisions, contribute hands-on to scalable systems using Java/Kotlin and AWS, with 12+ years experience.

Senior Software Engineer building and enhancing the backend tax engine for Cash App Taxes. Translate complex tax rules into scalable, reliable software; collaborate with tax experts and cross-functional teams; mentor others and apply AI-first practices. Requires 6+ years backend experience and strong system design skills.