Tiktok - San Jose, CA

posted 4 days ago

Full-time - Senior
San Jose, CA
Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services

About the position

As a Senior Machine Learning Engineer on the Search E-Commerce team at TikTok, you will play a pivotal role in enhancing the search algorithm for our rapidly growing global e-commerce business. This position is centered around utilizing state-of-the-art large-scale machine learning technology, including cutting-edge natural language processing (NLP), computer vision (CV), and multi-modal technology. Your primary mission will be to build an industry-leading search engine that provides an exceptional e-commerce search experience for over 1 billion monthly active TikTok users worldwide. You will be tasked with improving the basic search quality and user experience by optimizing query analysis and text relevance matching. This involves a deep understanding of e-commerce video content and implementing multi-modal matching techniques to enhance users' perception of product authority. You will also be deeply involved in the design and implementation of core search products, aiming to comprehensively improve the end-to-end shopping experience from browsing to after-sales. In addition to improving search quality, you will design and implement the end-to-end ranking system, which includes recall, first-stage ranking, final-stage ranking, and mixed row. Your efforts will focus on enhancing users' personalized shopping interests models and improving shopping conversion efficiency for merchandise, video, and live streams, ultimately promoting growth in gross merchandise volume (GMV). Furthermore, you will contribute to the healthy development of the ecosystem by addressing industry challenges such as supply and demand matching, business cold starts, and sustainable business growth. Your analytical skills will be crucial in thinking through, analyzing, and adjusting the evolution of the system to achieve long-term and sustainable GMV growth.

Responsibilities

  • Improve the basic search quality and user experience by optimizing query analysis and text relevance matching.
  • Understand e-commerce video content and implement multi-modal matching.
  • Enhance users' perception of product authority and participate in the design and implementation of core search products.
  • Comprehensively improve the end-to-end shopping experience from browsing to after-sales.
  • Design and implement the end-to-end ranking system including recall, first stage ranking, final stage ranking, and mixed row.
  • Improve users' personalized shopping interests model.
  • Enhance shopping conversion efficiency for merchandise, video, and live streams to promote GMV growth.
  • Address industry challenges such as supply and demand matching, business cold start, and sustainable business growth.
  • Analyze and adjust the evolution of the system to achieve long-term and sustainable growth of GMV.

Requirements

  • Industry work experience in machine learning with a focus on user experience.
  • Bachelor or advanced degree in computer science or a related technical discipline.
  • Excellent coding skills and solid knowledge of data structures and algorithms.
  • Strong analytical, modeling, and problem-solving skills, with the ability to distill complex data into essential insights.
  • Publication records in top journals or conferences are a plus.
  • Experience winning ACM-ICPC medals is a plus.

Nice-to-haves

  • Experience with large-scale machine learning technologies.
  • Familiarity with e-commerce platforms and user experience design.
  • Knowledge of advanced NLP and CV techniques.

Benefits

  • 100% premium coverage for employee medical insurance, approximately 75% premium coverage for dependents.
  • Health Savings Account (HSA) with a company match.
  • Dental, Vision, Short/Long term Disability, Basic Life, Voluntary Life, and AD&D insurance plans.
  • Flexible Spending Account (FSA) options for healthcare and dependent care.
  • 10 paid holidays per year plus 17 days of Paid Personal Time Off (PPTO) and 10 paid sick days per year.
  • 12 weeks of paid Parental leave and 8 weeks of paid Supplemental Disability.
  • Mental and emotional health benefits through EAP and Lyra.
  • 401K company match, gym and cellphone service reimbursements.
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