Staff Software Engineer, iOS Infrastructure

Staff Software Engineer, iOS InfrastructureJoin to apply for the Staff Software Engineer, iOS Infrastructure role at Slack.1 day ago – Be among the first 25 applicants.We are looking for engineers passionate about building strong, sustainable infrastructure for the Slack iOS client, used by millions daily. The iOS Product Infrastructure team enables feature engineers to tackle complicated problems quickly without needing to reinvent the wheel. We seek engineers specializing in either UI frameworks or data/networking infrastructure.As an infrastructure engineer, you build for the long term, value patterns and structures for maximum flexibility, set a high bar for technical design and code quality, demonstrate exceptional ownership across Slack’s iOS codebase, have a “can do” demeanor, and are self‑directed, innovative, and biased toward action in fast‑paced environments.What You Should Have5‑7+ years of experience building and maintaining complex iOS applicationsDeep expertise with Swift and iOS frameworksStrong understanding of iOS architectural patterns, such as VIPERExperience developing core functionality of team’s features or systemsExperience driving technical design and culture across their functionSolid experience designing scalable and maintainable APIs for shared components, frameworks, or systemsExtensive experience debugging and fixing crashes, UI rendering issues, and performance problems on iOS using Xcode, Instruments, and other toolsExperience with Combine, Swift Concurrency (async/await, actors), and dependency injection frameworks (e.g., Needle, Resolver)Experience with scripting (Python/bash, etc.)Experience running A/B experimentationAbility to monitor and improve app KPIs such as launch time, app hangs, and crash‑free sessionsA disciplined approach to development, testing, documentation and code structure in a team environmentAn interest in guiding, influencing, and growing other engineers and teamsDeep familiarity with the Xcode ecosystem, CI/CD pipelines, and automated testing toolsA product‑minded approach to engineering, with an eye for software quality and an ability to connect technical initiatives to business impactA related technical degree requiredBonus PointsExperience using Slack and a keen interest in making it betterA passion for creating accessible applicationsPrior experience on a centralized infrastructure team, serving both internal developer customers and external usersTeam Blog PostsStabilize, Modularize, Modernize: Scaling Slack’s Mobile CodebasesScaling Slack’s Mobile Codebases: ModernizationExtending Anvil for Fun and ProfitDeveloping in the OpenSeniority levelMid‑Senior levelEmployment typeFull‑timeJob functionEngineering and Information TechnologyIndustriesTechnology, Information and InternetUnleash Your Potential. 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