You’ll work on build systems features and problems, for both at-desk workflows as well as large-scale operating system CI/CD builds. You'll find ways to combine our unique problem domain with established distributed system techniques to achieve both high performance and reliability.You'll review user workflows and analyze problem requirements, review existing solutions and available systems, and make high-level workflow and architectural decisions, considering both short- and long-term goals. Once solutions are identified, you will work with your team to implement them while developing appropriate testing and operational mechanisms.* Spend the majority of your time programming in Swift. * Collaborate with your teammates through git pull requests, in-person conversations, and Slack. * Engage with other teams to help identify issues and establish long-term relationships that include knowledge sharing. * Develop expertise and be given ownership over components critical to Apple’s success. * Provide technical guidance, software architectural review, and mentorship. * Make customer-focused product design decisions with your teammates and drive what really matters. * Prioritize and schedule issues, estimate scope of work, and investigate new issue reports in your areas of responsibility.