Responsibilities About the Team TikTok's Creation Experience team delivers the core video production technologies across mobile platforms, enabling hundreds of millions of TikTok creators to tell their stories, express their emotions, and convey their knowledge in the format of short-form videos. We are looking for enthusiastic mobile developers at various levels of experience to work on TikTok's core technologies of video filming and editing. The technical stack covers various camera features, nonlinear editing on mobile devices, UGC creation workflow, and a lot more. In this role, you will optimize the performance of TikTok's next-generation camera technologies, collaborate with external mobile SoC/device/service partners, and deliver the best user experience on a huge variety of mobile platforms for TikTok creators around the world. Responsibilities - Profile and optimize video creation performance and quality, and refine user experience in each and every possible video production workflow for TikTok. - Develop new content creation features to support business requirements. - Bridge project communication and project coordination across multiple teams for the successful delivery of the latest mobile video technologies. Qualifications Minimum Qualifications - Bachelor or above degree in Computer Science or related majors, with solid coding skills with Swift/Objective-C - 3+ years of software-development experience; experience with iOS software development. Familiar with multi-threading, common data structures, and common software design patterns. - Experience with performance monitoring, profiling and optimization for mobile apps, including but not limited to optimization of CPU/GPU/memory usage and power consumption Preferred Qualifications - Experience with applying on-device machine learning to product experience improvement. - Experience with applying AI into the daily work process and product experience improvement. - Experience with one or more software frameworks: FFmpeg, Metal/OpenGL, AVFoundation, VideoToolBox. - Experience with one or more video codecs: H.264, H.265, etc. Job Information [For Pay Transparency]Compensation Description (Annually) The base salary range for this position in the selected city is $212800 - $387600 annually. Compensation may vary outside of this range depending on a number of factors, including a candidate's qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units. Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure). The Company reserves the right to modify or change these benefits programs at any time, with or without notice. For Los Angeles County (unincorporated) Candidates: Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment: 1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues; 2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and 3. Exercising sound judgment.