[Hiring] Senior Staff iOS Engineer @Block

Role Description

We build native foundations that support seller-facing software across multiple teams. You will set direction for iOS architecture, performance, reliability, security, and developer experience. You can start from an important, unowned problem, prove a direction through hands-on work, and create a program other teams can join. You may begin as the sole expert, but your goal is to create leverage through clear interfaces, documentation, and new technical leaders.

You will:

• Find and frame systemic iOS problems that do not yet have clear ownership.
• Define strategy, architecture, standards, and measures of success across teams and applications.
• Build prototypes, reference implementations, and the critical path needed to prove the direction.
• Lead multi-quarter migrations and foundational initiatives through broad adoption.
• Establish durable practices for quality, testing, observability, release safety, and maintainability.
• Develop senior engineers and create an ownership model that does not depend on you as a permanent bottleneck.

How you work:

• You are self-directed and actively gather the context, data, and domain expertise needed to make sound decisions.
• You move independently within your scope and seek alignment when decisions affect other teams or create long-term commitments.
• You use AI tools to investigate and deliver at greater scale. You verify the work and remain accountable for security, reliability, and customer trust.
• You measure success through adoption and seller or customer outcomes, not the production of frameworks or documents.

Qualifications

• 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.

Technologies we use and teach

• Swift
• Objective-C
• SwiftUI
• UIKit
• Swift Concurrency
• Combine
• Xcode
• Instruments
• Protocol Buffers
• Bazel
• Testing infrastructure
• Observability tools
• AI-assisted development tools

Benefits

• Remote work
• Medical insurance
• Flexible time off
• Retirement savings plans
• Modern family planning