Machine Learning Engineer, Tech Lead - Engineering Efficiency and AI Code Assistant

Responsibilities

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 platform is built to help imaginations thrive. This is doubly true of the teams that make TikTok possible. Together, we inspire creativity and bring joy - a mission we all believe in and aim towards achieving every day. To us, every challenge, no matter how difficult, 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 communities we serve. Join us.

About the Team

The Quality Technology Team focuses on the quality domain, providing a series of AI-powered products and tools throughout the entire software engineering lifecycle from development, testing, and changes to online operation and maintenance. We leverage cutting-edge artificial intelligence to offer comprehensive quality improvement solutions, helping businesses quickly build advanced quality technology capabilities. Our AI-driven tools excel in areas such as automated code review, intelligent test generation, change risk prediction and control, architectural risk governance, and adaptive monitoring and emergency response. By integrating AI into quality processes, we enable businesses to enhance quality built-in practices, improve testing efficiency, and streamline automated testing workflows.

What You'll Do:

We are seeking an exceptional Machine Learning Engineer with deep expertise in large language models to join our innovative team. As a Machine Learning Engineer (MLE) specializing in code large language models, you will be responsible for developing, enhancing, and applying AI-powered models designed specifically for code-related tasks. Your role will involve working with advanced code intelligence models to perform comprehensive code reviews, generate unit tests, and implement effective code fixes. You will leverage your deep understanding of code-centric AI to drive innovation and deliver high-quality solutions that improve software engineering processes.

• Develop and Enhance Code LLMs: Design, train, and optimize code-specific LLMs to address tasks such as code review, unit testing, code fixing, and other code-centric activities.
• Code Review and Analysis: Utilize code intelligence models to perform thorough and accurate code reviews, identifying potential issues, improvements, and areas for optimization.
• Unit Test Generation: Develop and implement models that automatically generate unit tests to ensure code quality and reliability.
• Code Fixing and Refactoring: Leverage AI models to suggest and apply code fixes, improvements, and refactorings to enhance code performance and maintainability.
• Research and Innovation: Stay up-to-date with the latest advancements in code LLMs and related AI technologies. Conduct research to identify new techniques and methodologies that can be integrated into our solutions.
• Collaboration: Work closely with software engineers, data scientists, and other stakeholders to understand requirements and deliver effective AI-powered tools and solutions.
• Documentation and Reporting: Document model development processes, performance metrics, and results. Provide detailed reports and insights on model performance and improvements.

Qualifications

Minimum Qualifications:

• Proven experience in developing and working with code-specific large language models (e.g., GitHub Copilot, OpenAI Codex, DeepMind AlphaCode) and related AI technologies.
• Technical Skills: Strong proficiency in programming languages such as GoLang (preferred), Python, Java, or C++. Experience with machine learning frameworks and libraries (e.g., TensorFlow, PyTorch).
• Problem-Solving: Ability to solve complex problems comprehensively and develop innovative solutions using code-centric AI models.
• Knowledge: In-depth understanding of software engineering principles, code review processes, unit testing methodologies, and code optimization techniques.
• Communication: Excellent verbal and written communication skills, with the ability to clearly convey technical concepts and collaborate effectively with cross-functional teams.
• Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

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

Job Information

【For Pay Transparency】Compensation Description (Annually)

The base salary range for this position in the selected city is $224,000 - $410,000 annually.

Compensation may vary outside of this range depending on a number of factors, including a candidate’s qualifications, skills, competencies, experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, well-being benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).

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.