Company Name: Goodnotes

Job Details: Easy,Apply,18,Locations,In-Office,or,Remote,Senior,level

Job Url: https://builtin.com/job/senior-ios-engineer-performance-stability-and-monitoring/8035311

Job Description: At Goodnotes, we believe that every individual holds untapped potential waiting to be unleashed. By reimagining the way we interact with information, we’re merging human creativity with the breakthrough capabilities of AI. Our renewed vision and mission drive us to create the best medium for human and AI collaboration, empowering users to explore new dimensions of productivity, creativity, and learning. Join us on this journey as we transform digital note-taking into an inspiring and innovative experience.Our Values:Dream big- Be visionary, strategic, and open to innovationBuild great things- Work in service of our users, always improving and pushing higherOperate like an owner- Take responsibility with bold decision-making and bias for actionWin like a sports team- Be trusting and collaborative while empowering othersLearn and grow fast- Never stop learning and iterate fastShare our passion- Share ideas and practice enthusiasm and joyBe user obsessed- Empathetic, inquisitive, practicalAbout the team:The Apple Performance, Stability and Monitoring (PSM) team sits within Foundation. At Goodnotes, our Foundation teams ensure that the app experience is seamless, responsive, and resilient, no matter how complex the product becomes. As a Senior iOS Engineer in the Apple PSM team, you will tackle challenges across performance optimisation, memory management, concurrency, alerting and monitoring, among others.Goodnotes is an offline-first app, and most of the features you see run locally on the device. That presents a lot of challenges to ensure they can run smoothly, even on high-end devices. In the Apple PSM team, you’ll collaborate with other teams to understand the challenges in the code they produce and promote best practices that maximise performance and stability. Stability and performance are one of our top user concerns. Join us to make Goodnotes fast and reliable, and make a true impact on millions of users.You'll be:Having performance and stability, and the center of everything you to to help addressing some of the top user concerns about performance and stabilityImplementing best practices for automated testsCreating custom monitors that allow teams to quickly realise if users are having a suboptimal experience with the code they shippedContinuously improve the development practices through research, automation, documentation and testingShare your knowledge and experience with the rest of the teamYou'll need:Expertise in Swift programming. Experience with Swift Concurrency is a plusTrue care about performance and appreciate that even minimal performance gains matterA strong understanding of computer science fundamentals and an enjoyment of solving algo and data structure puzzles.Excellent problem solving, communication, and storytelling skillsStrong sense of the best tools for any taskHigh sense of autonomyGood analytical skills, investigating performance issues using Instruments or other tooling.Proven experience working on sizable and complex codebasesBig plus if:You have worked with apps with millions of MAUs, and you understand the cost implications and problems large user bases may haveYou have experience building custom tooling to identify / analyze perf issuesYou have experience cross-compiling codebase on different mobile platformsEven if you don’t meet all the criteria listed above, we would still love to hear from you! Goodnotes places a lot of value on learning and development and will support your growth if needed.The stack:Programming Language: The vast majority of our code is written in SwiftCI / CD: We use CircleCI although we’re slowly migrating to TeamCity. We also have an in-house CI system on top of TeamCity / CircleCI to selectively test what's needed based on the changes on a PRCloud Monitoring: DataDogConcurrency: We have a large, old, but modular codebase. We use modern Swift Concurrency as much as possible as we gradually move away from RxSwiftUI code: As much new UI code as possible is in SwiftUI. We fall back to UIKit when needed and re-use the majority of it on macOS using CatalystCross-platform: We re-use our core packages on cross-platform using SwiftWasm, UI for other platforms is written using React or their respective native APIsDependencies: We exclusively use Swift Package Manager and frequently make new local packagesSource control and builds: We have a mono-repo and use GitHub and Pull Requests. We have an internal tool to manage build generation that also powers our semi-automatic, soon-to-be fully automatic, release process.Release cadence: We QA and release on a weekly scheduleThe interview process:Introduction: The Talent Team want to hear more about your background, what you are looking for, and why you’d like to join Goodnotes.Technical Screening: A timed coding challenge on the Hackerrank platform.Onsite Live coding & Technical interview: A live coding call with one of our engineers. This is where you get to see what it would be like working at Goodnotes as well as the chance to ask any engineering questions you may haveAI literacy interview: A short conversation with an AI Champion on your understanding and use of AI toolsHiring Manager interview: A call with your hiring manager. This is the person who will be managing you day to day, working on your growth and development with you as well as support you throughout your career at Goodnotes.Values interview – Meeting with members of the Goodnotes Team to answer questions relating to take ownership AND build great thingsPlease note that technical interviews are held onsite in our office locations (London, Hong Kong & Singapore) all transport, accommodation and costs involved will be covered by the Goodnotes team.What’s in it for you:Remote friendlyFlexible working hours and locationMedical insurance for you and your dependentsGreat annual leave allowanceMeaningful equity in a profitable tech-startupBudget for things like noise cancelling headphones, setting up your home office, personal development, professional training, and health & wellnessSponsored visits to our Hong Kong or London office every 2 yearsCompany wide annual offsiteFantastic maternity/ paternity packages and and allowancesNote: Employment is contingent upon successful completion of background checks, including verification of employment, education, and criminal records.By submitting your application, you acknowledge that you have read and understood our Candidate Privacy Notice, which provides important information about the data we collect during the application process. You can find it here.