Senior iOS Prototyping Engineer - Mobile Innovator

Slack; San Francisco (CA); On-site; USD 218,000 - 365,000; Full time

Job summary

Slack Mobile team seeks an experienced Senior Staff Engineer to shape Slack’s mobile experiences. As a Prototyping Engineer, you’ll embed as a leader on greenfield initiatives, defining and shipping first versions of new features for a global user base.

You’ll partner with Product, Design, Backend, and fellow mobile engineers to deliver intuitive, perform ant experiences that scale, with high velocity and strong independent judgment.

Qualifications

• 10+ years of professional software engineering experience with iOS at scale.
• Strong track record of leading cross‑functional initiatives.
• Experience in fast‑paced environments and zero‑to‑one teams.
• Deep expertise in Swift and modern iOS development.
• Ability to influence product and technical direction with executives.

Responsibilities

• Lead engineering development of mobile experiences used by millions daily.
• Drive ambiguous initiatives from exploration to production rollout.
• Collaborate with Product and Design to balance user needs and constraints.
• Mentor engineers and evangelize best practices for mobile development.

Skills

iOS development

Swift

SwiftUI

Prototyping

Technical leadership

Cross-functional collaboration

Performance optimization

Mentorship

Mobile architecture

Product collaboration

Tools

Xcode

Job description

Slack Mobile team seeks an experienced Senior Staff Engineer to shape Slack’s mobile experiences. As a Prototyping Engineer, you’ll embed as a leader on greenfield initiatives, defining and shipping first versions of new features for a global user base.

You’ll partner with Product, Design, Backend, and fellow mobile engineers to deliver intuitive, perform ant experiences that scale, with high velocity and strong independent judgment.