Machine Learning Engineer Graduate (E-Commerce Risk Control)- 2027 Start (PhD)

ByteDance; Seattle (WA); On-site; USD 150,000 - 230,000; Full time

Job summary

ByteDance seeks a PhD-level researcher to build AI-native risk intelligence systems for TikTok. You will design ML algorithms, prototype innovative solutions, and work with Product and Tech teams to validate hypotheses and drive risk defenses in a fast-moving environment.

You will collaborate across multidisciplinary teams to enhance automation, build scalable data querying for real-time and offline analysis, and define metrics to measure risk control progress.

Qualifications

• PhD in Computer Science, Computer Engineering or related discipline.
• Proficiency in modern ML theories and applications including ensemble trees, deep neural networks, transfer/multi-task learning, reinforcement learning, graph theory and unsupervised learning.
• Experience with Python, SQL/Hive and Hadoop.
• Strong understanding of data structures and algorithms with excellent problem-solving ability.
• Detail oriented with effective time management and strong analytical skills.

Responsibilities

• Develop and implement innovative ML algorithms to manage business risks in TikTok's products and platforms.
• Prototype and explore novel solutions, conduct experiments to validate hypotheses, and provide insights to Product and Tech teams.
• Collaborate with multidisciplinary teams to enhance current automation processes.
• Build efficient data querying infrastructure for real-time and offline analysis; identify opportunities to strengthen risk defense solutions.
• Define risk control metrics and promote data-driven practices; align teams on numeric risk goals.
• Document technical processes and communicate results through writing, visuals, and presentations.

Skills

ML theory

Ensemble trees

Deep neural networks

Transfer learning

Multi-task learning

Reinforcement learning

Graph theory

Unsupervised learning

Education

PhD in CS/CE or related

Tools

Python

SQL/Hive

Hadoop

Job description

Join us as we work together to inspire creativity and enrich life around the globe.

Location:

Seattle

Team:

Technology

Employment Type:

Regular

Job Code:

A185756

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Responsibilities

Our team is building the next generation of AI-native risk intelligence systems to address emerging challenges driven by large-scale AIGC content production.As content creation becomes automated and adversaries adopt systematic experimentation (e.g., large-scale template variation and rapid iteration), traditional rule-based and single-model approaches are no longer sufficient.

We are transitioning from monolithic LLM applications to a structured multi-agent architecture that emphasizes:

• Tool-augmented reasoning (ReAct-style systems)
• Modular skill composition
• Execution traceability and observability
• Feedback-driven system evolution
• Cross-domain risk reasoning

We are looking for talented individuals to join our team. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth. Successful candidates must be able to commit to an onboarding date by the end of the year. Please state your availability and graduation date clearly in your resume.

• Develop and implement innovative machine learning algorithms to manage business risks in TikTok's products and platforms.
• Prototype and explore novel solutions, conduct experiments to validate hypotheses, and provide insights to Product and Tech teams.
• Collaborate with multidisciplinary teams to enhance current automation processes.
• Build efficient data querying infrastructure for real-time and offline analysis. Identify opportunities to strengthen risk defense solutions.
• Define risk control metrics and promote data-driven practices. Align teams and stakeholders on numeric goals for risk control.
• Document technical processes and effectively communicate results through writing, visualizations, and presentations.

Qualifications

Minimum Qualifications:

• Individuals who are completing or have recently completed a PhD degree in Computer Science, Computer Engineering or a related discipline.
• Proficiency in modern machine learning theories and applications, including ensemble trees, deep neural networks, transfer/multi-task learning, reinforcement learning, graph theory, and unsupervised learning.
• Experience with Python, SQL/Hive, and Hadoop
• Strong understanding of data structures and algorithms, with excellent problem-solving ability
• Detail oriented, effective time management, and strong analytical skills

Preferred Qualifications:

• Demonstrated software engineering experience from previous internship, coding competitions, or publications
• Internship experience or research experience, especially in e-commerce, risk control domain
• Curiosity towards new technologies and entrepreneurship
• High levels of creativity and quick problem-solving capabilities

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 https://tinyurl.com/RA-request