IOS Software Engineer, Product Platform

Product Platform builds the foundations behind Cash App and Square. We own shared systems, abstractions, and tools that help product teams build high-quality iOS experiences with speed, consistency, and confidence, while shaping how AI-native development is adopted across our engineering organizations.

As a Staff iOS Engineer on Product Platform, you will be a hands-on technical leader and a multiplier for iOS engineering. You will identify important problems that do not yet have clear ownership, prove a direction through hands-on work, and create systems that other teams can adopt. You will influence iOS architecture, developer experience, performance, reliability, security, and product quality across multiple teams.

This is an individual contributor role with organization-level scope. Your goal is not to become a permanent bottleneck. You will create leverage through clear interfaces, strong documentation, sound technical decisions, and new technical leaders.

• Own and evolve foundational iOS systems, such as application architecture, navigation, deep linking, dependency management, lifecycle management, and shared user interface foundations.
• Design shared libraries, frameworks, and developer tools that product teams rely on.
• Find and frame systemic iOS problems that do not yet have clear ownership.
• Define technical strategy, architecture, standards, and measures of success across teams and applications.
• Build prototypes, reference implementations, and critical paths that prove a direction before broader adoption.
• Lead multi-quarter migrations and foundational initiatives from proposal through adoption.
• Establish durable practices for testing, observability, performance, release safety, security, and maintainability.
• Improve developer and AI ergonomics so both engineers and coding agents can work effectively with the platform.
• Contribute platform technology to open source when it creates value for the broader engineering community.

• Integrate AI-assisted development tools into daily workflows to drive leverage across product and platform engineering.
• Evaluate emerging tools and practices, building durable, AI-powered platform capabilities where they add clear value.
• Verify AI-assisted outputs and ensure high standards for software quality, security, and reliability.
• Drive organizational impact

• Identify and address cross-cutting technical problems beyond your immediate team.
• Lead architecture and design reviews across team boundaries.
• Surface systemic risks before they become customer, seller, or engineering problems.
• Develop senior engineers and create ownership models that distribute expertise.
• Help set technical standards that improve the quality and velocity of iOS development over time.
• Collaborate broadly.

• Partner with engineers, product managers, designers, and engineering leaders to align platform investments with product needs.
• Work with Android, web, and backend engineers to improve shared product foundations and cross-platform experiences.
• Represent iOS platform needs in cross-team and company-wide technical discussions.
• Communicate complex technical decisions clearly to technical and nontechnical audiences.

• 12+ years of professional software engineering experience.
• 8+ years in roles where mobile engineering was a primary responsibility, including 4+ years building native iOS products.
• Deep expertise across modern and legacy iOS frameworks, Swift, and Objective-C.
• Experience creating foundational systems, shared frameworks, or developer tooling used across multiple teams.
• Record of leading strategic, multi-quarter initiatives with broad adoption and durable impact.
• Experience connecting platform strategy to customer-facing and multi-tenant SaaS products that support business operations.
• Strong systems thinking, technical communication, mentoring, and organizational influence.
• Platform builder's mindset. You treat engineers as customers and measure success through adoption and product outcomes.

• Experience with large, modular iOS applications maintained by many teams.
• Experience with build systems, continuous integration and delivery, testing infrastructure, observability, or mobile performance.
• Experience supporting customer-facing or seller-facing products in financial services, commerce, or another high-trust environment.
• Experience with experimentation…