Senior iOS Prototyping Engineer — Lead Greenfield Mobile

Slack Enterprise; San Francisco (CA); Remote; USD 263,000 - 401,000; Full time

Job summary

Slack is seeking a Senior Staff Prototyping Engineer for iOS to shape the future of Slack's mobile experiences. You will lead greenfield prototypes, partner with Product, Design, Backend, and other mobile engineers to validate ideas and ship early versions.

You’ll operate with independence, guide ambiguous initiatives from exploration to production, and mentor engineers while setting best practices for mobile development and reliability across the org.

Qualifications

• 10+ years of professional software engineering experience with high-craft iOS at scale.
• Proven ability to start new initiatives, prototype paths to production, and reorient the org.
• Experience in fast-paced environments; able to lead org-spanning initiatives with impact.
• Deep expertise in Swift, iOS architecture, concurrency, networking, and performance.
• Ability to influence product and technical direction with stakeholders across teams.

Responsibilities

• Shape the future of Slack on mobile by leading experiences used by millions daily.
• Lead cross-functional, ambiguous initiatives from early exploration through production rollout.
• Prototype features to define the mobile user experience for Slack’s biggest opportunities.
• Partner with Product and Design to balance user needs, constraints, and maintainability.
• Mentor senior engineers and evangelize best practices across the mobile org.

Skills

Swift

iOS

Leadership

Mentorship

Concurrency

Performance optimization

Tools

Combine

Swift Concurrency

Needle/Resolver

Job description

Slack is seeking a Senior Staff Prototyping Engineer for iOS to shape the future of Slack's mobile experiences. You will lead greenfield prototypes, partner with Product, Design, Backend, and other mobile engineers to validate ideas and ship early versions.

You’ll operate with independence, guide ambiguous initiatives from exploration to production, and mentor engineers while setting best practices for mobile development and reliability across the org.