Machine Learning Engineer Intern (Search-TikTok Recommendation)

2 Months ago • Upto 1 Years • Research & Development

Job Summary

Job Description

The TikTok Search Team at ByteDance seeks a Machine Learning Engineer Intern for Summer 2025. This internship involves improving the search core algorithm through projects focusing on content understanding/matching (NLP, CV), user behavior modeling (recommendation systems), and video understanding (NLP, CV). Responsibilities include applying cutting-edge technologies to enhance search relevance and personalization for millions of users. The ideal candidate possesses strong coding skills, a solid understanding of algorithms and data structures, and experience in NLP, ranking, or recommender systems. The role requires effective communication and teamwork. Interns will gain hands-on experience in a large-scale, real-time system.
Must have:
  • BS/MS in relevant field
  • Proficient coding skills
  • Strong algorithm & data structure knowledge
  • Experience in NLP, ranking, or recommender systems
Good to have:
  • Experience from previous internships or publications
  • High creativity and problem-solving skills
Perks:
  • Health insurance
  • Life insurance
  • Wellbeing benefits
  • 10 paid holidays
  • Paid sick time

Job Details

Responsibilities
About the team On the TikTok Search Team, you will have the opportunity to develop and apply cutting edge machine learning technologies in real-time large-scale systems, which serve billions of search requests every day. Via advanced NLP and multi-modal models, our projects impact and improve the search experience for hundreds of millions of users globally. We embrace a culture of self-direction, intellectual curiosity, openness, and problem-solving. Responsibilities • Participate in the improvement of the search core algorithm, possible directions include: • Content understanding/matching: Applying the industry's cutting-edge NLP and CV technology to match the most relevant videos for each search query, and continuously improve the relevance of TikTok search. • User Behavior Modeling: solving the recommendation problem in search, let TikTok search increase the ability of personalization on the basis of "relevant", and understand users better. • Video understanding: comprehensive use of NLP, CV, and other technologies for better video understanding from the perspective of the video itself and social network, improve the authority, credibility, and usefulness of search results.
Qualifications
Minimum Qualifications: • Currently pursuing a Bachelor's or Master's in Software Development, Computer Science, Computer Engineering, or a related technical discipline. • Must obtain work authorization in country of employment at the time of hire, and maintain ongoing work authorization during employment. • Proficient coding skills and strong algorithm & data structure basis. • Effective communication and teamwork skills. • Experience in one or more of the following areas: NLP, Ranking, Ads, search engine, recommender system, distributed system, and machine learning. Preferred Qualifications • Graduating December 2025 onwards with intent to return to degree-program after the completion of the internship. • Demonstrated software engineering or natural language processing, deep learning experience from previous internship, work experience, coding competitions, or publications. • High levels of creativity and quick problem-solving capabilities.
Job Information
About Us

Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

Why Join ByteDance

Inspiring creativity is at the core of ByteDance's mission. Our innovative products are built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and enrich life - a mission we work towards every day.

As ByteDancers, we strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our Company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

ByteDance 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 ByteDance, our mission is to inspire creativity and enrich life. 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.

Reasonable Accommodation

ByteDance 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

【For Pay Transparency】Compensation Description (Hourly) - Campus Intern

The hourly rate range for this position in the selected city is $45- $60.

Benefits may vary depending on the nature of employment and the country work location. Interns have day one access to health insurance, life insurance, wellbeing benefits and more. Interns also receive 10 paid holidays per year and paid sick time (56 hours if hired in first half of year, 40 if hired in second half of year).

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.

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About The Company

Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

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