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Staff iOS Engineer, Square Staff

Cash App

$153,000 - $270,000
Sep 24, 2025
San Francisco, CA, US
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Square is looking to solve the business problem of enabling sellers to manage their workforce operations more efficiently and with greater confidence, by providing intelligent workforce software that turns insights into action for employers and employees alike. The specific focus is on developing high-impact iOS experiences for permissions, authentication, timekeeping, and pay-related workflows.

Requirements

  • Deep technical expertise in iOS development with demonstrable organizational impact
  • Strong understanding of distributed systems, performance optimization, and reliability engineering
  • Proven ability to influence technical direction across organizational boundaries
  • Swift, Objective-C, Kotlin
  • Reactive Swift, UIKit, CoreAnimation, and CoreData
  • Unit tests, snapshot tests, integration tests
  • Service APIs and Protocol Buffers

Responsibilities

  • Lead the ideation, architecture, and implementation of high-impact, seller-facing experiences on iOS that span permissions, authentication, timekeeping, and pay-related workflows—integrated tightly with Square hardware, POS, and partner systems.
  • Set technical direction, drive platform quality and reliability at scale, and accelerate delivery by collaborating closely with design, product, data, and cross-functional engineering teams.
  • Evolve our integration infrastructure, elevate code health and testing rigor, and mentor engineers across teams while shaping roadmaps based on measurable customer value.
  • Design, build, and test robust, scalable client software complex server, network, and hardware interactions.
  • Design high availability, resilient systems which can operate no matter the network or device conditions.
  • Lead complex cross-functional initiatives, often across team boundaries.
  • Participate in the full lifecycle of product development, from early definition to planning through release and beyond.

Other

  • Lead a team of engineers focused on both engineer initiatives and product initiatives
  • Foster a strong culture with team members distributed across several locations.
  • Collaborate with colleagues across engineering, product, design, and operations to deliver end-to-end solutions.
  • Capture and analyze metrics to drive informed decisions.
  • History of mentoring and growing engineering talent