Senior Staff iOS Software Engineer, Salesforce

• As an infrastructure engineer, you like building for the long term and value patterns and structures that allow for maximum flexibility in a constantly evolving product
• You excel in leading others and derive joy from mentoring and growing other iOS engineers
• You set a high bar for the technical design and code quality of your team
• You demonstrate exceptional ownership of not only the area of your team, but across Slack’s entire iOS codebase
• You have a “can do” demeanor and nothing is beneath you or outside your responsibilities because you do what it takes to deliver the highest quality code and the most impactful features
• You are self-directed, innovative, and biased towards action in fast-paced environments
• You love to build new things and thrive in ambiguity and even failure
• 10+ years of experience building and maintaining complex iOS applications, in a team environment directing and guiding the efforts of a functional group through delegation to senior technical leaders
• Deep expertise with Swift and iOS frameworks
• Strong understanding of iOS architectural patterns, such as VIPER
• Recognized lead for a number of features or systems that solve large, open-ended problems, often involving new or innovative approaches
• Experience driving technical design and culture across their function, contributing to organization-wide technical decision-making and strategy
• Solid experience designing scalable and maintainable APIs for shared components, frameworks, or systems
• Extensive experience debugging and fixing crashes, UI rendering issues, and performance problems on iOS using Xcode, Instruments, and other tools
• Experience with Combine, Swift Concurrency (async/await, actors), and dependency injection frameworks (e.g., Needle, Resolver)
• Experience with scripting (Python/bash etc)
• Experience with running a/b experimentation
• Ability to monitor and improve app KPIs such as launch time, app hangs, and crash-free sessions
• A disciplined approach to development, testing, documentation and code structure in a team environment
• An interest in guiding, influencing, and growing other engineers and teams
• Deep familiarity with the Xcode ecosystem, CI/CD pipelines, and automated testing tools
• A product-minded approach to engineering, with an eye for software quality and an ability to connect technical initiatives to business impact

Desirable

• We are looking for people who are passionate about building strong, sustainable infrastructure for the Slack iOS client, which is used by millions of people every day
• The iOS Product Infrastructure team enables feature engineers at Slack to tackle complicated problems quickly without needing to reinvent the wheel
• We’re looking for lead engineers who specialize in either UI frameworks or data/networking infrastructure