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 engineers who specialize in either UI frameworks or data/networking infrastructure.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 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.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 with 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 Open #J-18808-Ljbffr