About the role#
This is a full-time, paid internship for Summer 2027 based in Seattle. You will join the E-commerce Recommendation and Marketing Algorithm team to work on projects that help users discover products. You will contribute to technical solutions that impact user growth and marketing efficiency.
What you'll do#
- Optimize e-commerce growth and marketing algorithms, including user value modeling and personalized messaging.
- Build a user lifecycle data and value system to solve business challenges in TikTok Mall.
- Implement technical solutions for user growth engines, such as personalized notifications and recommendation handling.
- Refine recall and sorting algorithms to improve the relevance and diversity of new user recommendations.
- Use uplift models and operations research methods to improve marketing efficiency and drive GMV growth.
What you'll need#
- Current pursuit of an undergraduate degree in Computer Science, Computer Engineering, Software Development, or a related field.
- Strong grasp of machine learning math and engineering fundamentals.
- Ability to write clean, efficient, and reproducible code with a command of data structures and algorithms.
- Deep research or engineering experience in at least one of these areas: LLMs, foundation models, NLP, CV, RL, or recommendation/search/ads systems.
- Capability to explain your technical decisions and identify where your previous work fell short.
- Skill in breaking down ambiguous problems into actionable steps.
- Enthusiasm for applying LLM or LRM techniques in production environments.
- Preferred: Published papers in top AI conferences or journals, or strong results in ACM/Machine Learning competitions.
- Preferred: Expertise in LTV estimation, uplift modeling, operations research, sequence modeling, or multi-scenario optimization.
Location & details#
- Location: Seattle, Washington.
- Term: Summer 2027.
- Modality: On-site.
- Employment: Full-time internship.
About TikTok
TikTok operates as an entertainment provider. The company maintains a global presence with offices in cities including Los Angeles, Singapore, New York, London, and Tokyo. It employs over 92,000 people. The organization is privately held.
How to get in at TikTok
Landing an internship at TikTok requires speed because early applicants often get seen before the pile grows. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you can apply among the first. This gives you a better chance of your resume being reviewed while the team is still actively filling the position. You should aim to be one of the first people to submit your materials. Reaching out to the right person can also improve your chances of getting a response. Intern Insider surfaces the recruiters behind the company roles so you can contact them directly to ask about the role or a referral. This direct approach often works better than waiting for a response from a general application queue.
