Block Lead and evolve foundational iOS platform systems as a Staff iOS Engineer at Block. Drive architecture, developer experience, and AI-assisted development integration across multiple teams.
Responsibilities
As a Staff iOS Engineer on Product Platform, you will be a hands-on technical leader and a multiplier for iOS engineering.
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.
Build and evolve the iOS platform
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.
Qualification
A record of leading strategicStrong systems thinkingA platform builder's mindsetIdeallyExperience with largeExperience with build systems
Required
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.
A 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.
A platform builder's mindset. You treat engineers as customers and measure success through adoption and product outcomes.
Ideally, you also have:
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.
