Senior Machine Learning Engineer - TikTok Short Video Content Understanding / Mult

Responsibilities

Our team's mission is to empower content understanding for TikTok Short Video business. We focus on cutting-edge research in content understanding and the development of advanced LLM / MLLM algorithms and applications, including generative recommendation, weakly-supervised learning, few-shot classification, video tagging, multi-task learning, multilingual learning, multimodal pretraining, and more. We aim to succeed both in driving measurable business impact (e.g., recommendation metrics) and delivering state-of-the-art research outputs. Responsibilities 1. Lead multimodal algorithm development for TikTok's short-video business, explore applications of multimodal technologies in recommendation systems and other scenarios to improve key business metrics. 2. Conduct cutting-edge research in multimodal and MLLM technologies, design advanced algorithms to solve business requirements while achieving technical breakthroughs. 3. Drive engineering deployment and implementation, ensuring model stability, scalability, and efficiency in production environments. 4. Focus on key areas including (but not limited to) : - General AI platform design and development, including few-shot / zero-shot on MLLM, AI-labeling, auto prompting, active-learning, continue pretraining and RL. - Integration of content understanding with recommendation systems (e.g., UGC ecosystems, cold start, interest exploration, comment understanding). - Leveraging multimodal techniques to develop next-generation recommendation systems, such as generative models and end-to-end approaches.

Qualifications

Minimum Qualifications 1. Proven experience in multimodal content understanding, with expertise in large language models (LLMs) and familiarity with cutting-edge progress in the field. 2. Strong technical foundation in at least one major deep learning framework (e.g., PyTorch, TensorFlow). 3. Proactive mindset, strong sense of ownership, excellent communication skills, and ability to collaborate across teams. Preferred Qualification 1. Hands-on experience deploying content understanding solutions in search, advertising, recommendation, or related domains.

Job Information

[For Pay Transparency]Compensation Description (Annually)

The base salary range for this position in the selected city is $136800 - $359720 annually.

Compensation may vary outside of this range depending on a number of factors, including a candidate's qualifications, skills, competencies and 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, wellbeing 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.

About TikTok

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 we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Why Join Us

Inspiring creativity is at the core of TikTok's mission. Our innovative product is 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 bring joy - a mission we work towards every day.

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. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. 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

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 Accommodation

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

In Summary : Our team's mission is to empower content understanding for TikTok Short Video business . We focus on cutting-edge research in content understanding and the development of advanced LLM / MLLM algorithms and applications . We aim to succeed both in driving measurable business impact (e.g., recommendation metrics) and delivering state-of-art research outputs .

En Español : Responsabilidades La misión de nuestro equipo es potenciar la comprensión del contenido para el negocio de TikTok Short Video. Nos centramos en una investigación de vanguardia en el entendimiento de contenidos y el desarrollo de algoritmos y aplicaciones avanzados LLM / MLLM, incluida la recomendación generativa, aprendizaje poco supervisado, clasificación a pocas capturas, etiquetado de vídeo, aprendizajes multitarea, aprendizaje multilingüe, preentrenamiento multimodal, etc. Nuestro objetivo es tener éxito tanto en impulsar un impacto comercial medible (por ejemplo, métricas de recomendación) como en entregar resultados de investigación de última generación. - Aprovechar las técnicas multimodales para desarrollar sistemas de recomendación de próxima generación, como modelos generativos y enfoques extremos a extremo. Cualificaciones Calificaciones mínimas 1. Experiencia probada en la comprensión del contenido multimodal, con experiencia en grandes modelos lingüísticos (LLM) y familiaridad con los avances más avanzados en el campo. 2. Una base técnica sólida en al menos un marco importante de aprendizaje profundo (por ejemplo, PyTorch, TensorFlow). 3. Mentalidad proactiva, fuerte sentido de propiedad, excelentes habilidades de comunicación y capacidad de colaboración entre equipos. Qualificación preferente 1. Los empleados tienen acceso al día uno a seguro médico, dental y de visión, un plan de ahorro con ajuste de empresa, licencia parental pagada, cobertura de discapacidad a corto y largo plazo, seguro de vida, beneficios para el bienestar, entre otros. También reciben 10 vacaciones pagadas por año, 10 días de enfermedad pagados por año y 17 días de tiempo personal pagado (proporcionado en la contratación con crecientes acumulaciones por mandato). La Compañía se reserva el derecho de modificar o cambiar estos programas de beneficios en cualquier momento, con o sin previo aviso. Para el condado de Los Ángeles (no incorporado) Candidatos : los solicitantes calificados con antecedentes de detención o convicción serán considerados para empleo de acuerdo con todas las leyes federales, estatales y locales incluyendo la Ordenanza del Condado de los Ángulos para Empleadores y la Jornada Externa de California. TikTok tiene su sede global en Los Ángeles y Singapur, y también tenemos oficinas en la ciudad de Nueva York, Londres, Dublín, París, Berlín, Dubai, Jakarta, Seúl y Tokio. Por qué unirse a nosotros Inspirar creatividad es el núcleo de la misión de TikTok. Nuestro producto innovador está construido para ayudar a las personas a expresarse auténticamente, descubrir y conectarse -y nuestros equipos globales y diversos lo hacen posible. Juntos, creamos valor para nuestras comunidades, inspiramos la creatividade y traemos alegría - una misión hacia la que trabajamos todos los días. Nos esforzamos por hacer grandes cosas con excelentes personas. Lideramos con curiosidad, humildad y deseo de impactar en una empresa en rápido crecimiento. Cada reto es una oportunidad de aprender e innovar como un equipo. Somos resilientes y abrazando desafíos a medida que vienen. Creando constantemente y fomentando perspectivas "Al mismo tiempo" , logramos alcanzar nuestro objetivo : crear experiencias tecnológicas inclusivas. TikTok Accommodation TikTok se compromete a proporcionar alojamientos razonables en nuestros procesos de reclutamiento para candidatos con discapacidades, embarazo, creencias religiosas sinceras u otras razones protegidas por las leyes aplicables.