Senior Frontend Software Engineer, TikTok User Growth - Innovative Growth

TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and its offices include New York, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Why Join Us
Creation is the core of TikTok's purpose. Our products are built to help imaginations thrive. This is doubly true of the teams that make our innovations possible. Together, we inspire creativity and enrich life - a mission we aim towards achieving every day. To us, every challenge, no matter how ambiguous, is an opportunity; to learn, to innovate, and to grow as one team. Status quo? Never. Courage? Always. At TikTok, we create together and grow together. That's how we drive impact-for ourselves, our company, and the users we serve.
Join us.

About the TikTok User Growth department
TikTok's User Growth is a cross-functional department (engineering, data science, recommendation/algorithm, product, marketing, operations) applying a data-driven growth approach. We work closely to improve the whole TikTok user growth funnel: branding, acquisition, onboarding, engagement, and retention, across a variety of products.

About the Innovative Growth organization
We own multiple product surfaces to serve TikTok's diverse content to different users and usage scenarios, including TikTok Webapp (www.tiktok.com ), Vehicle Infotainment Systems (Tesla, etc.), and TikTok Tablet apps. We are continually expanding to new surfaces. Together they form an important traffic matrix for TikTok to keep growing its user base and user consumption.

As a senior frontend software engineer in the TikTok User Growth - Innovative Growth org, you will:
- Work with product managers and data scientists to analyze product and user data, and together propose product iteration ideas based on data insights
- Based on product roadmap and priorities, design highly performant and scalable technical architecture and implement them as frameworks, libraries, or automated processes/guarding mechanisms on ci, etc. Lead other engineers to implement them, and drive adoptions in-team and cross-team, to improve engineering efficiency, reliability, and consistency
- Implement and troubleshoot video playback features and optimize performances - crucial for short video viewing and skipping experiences
- Optimize web performance to ensure a fast and seamless user experience in browsers running on potentially low-end devices
- Stay up-to-date with the latest web technologies and trends, and educate engineers and PMs about new product possibilities enabled by these new technologies
- Use full-stack web technology (Node.js, React, TypeScript, HTML, CSS) to develop MVPs and run experiments to validate ideas and iterate quickly, leveraging new technologies, and tools when appropriate
- Lead the conception, estimation, and prioritization of product requirements in the engineering teamMinimum Qualifications:
- Expert in JavaScript, HTML, and CSS. Experience with modern frontend frameworks such as React, Vue, or Angular. We use React.
- Expert in video playback technologies such as HTML5 Video and Media Source Extensions and optimization - especially in reducing time to next video play
- Expert in web performance optimization, especially in reducing input latency and LCP
- Strong problem-solving and debugging skills; Excellent written and verbal communication skills
- UI/UX instincts and knowledge
- Bachelor's degree in Computer Science or a related field, or equivalent experience

Preferred Qualifications:
- Experience with developing web-based smart/connected TV/Vehicle/Appliances apps, using DOM-based or Canvas-based solutions
- Experience with cross-platform solutions such as React Native, Flutter
- Experience with WASM for performance and cross-platform related usages
- Experience with WebRTC or other real-time video technologies
- Experience with server-side rendering
- Experience with Webpack, Babel, or other build tools
- Experience with unit testing frameworks
- Experience with cloud-based infrastructure and services
- Experience in Growth Engineering or Growth Hacking; have a successful user growth track record
- Data analytics mindset and skills: EDA using Python (pandas, Jupyter Notebook), BI tools, SQL, Hive, building data pipelines

TikTok is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At TikTok, our mission is to inspire creativity and bring joy. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.

TikTok is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at https://shorturl.at/cdpT2