# Senior Research Scientist, TikTok - Trust and Safety Source: https://realanalystjobs.com/job/senior-research-scientist-tiktok-trust-and-safety-tiktok-a8f768ff Senior Research Scientist, TikTok - Trust and Safety at TikTok, an on-site role based in San Jose, California, USA. Experience level: 2 Years. First seen on RealAnalystJobs on 15 November 2026, read from TikTok's own careers page (TikTok), which RealAnalystJobs re-checks daily and removes the role when it closes. TikTok has approved H-1B petitions on USCIS record (employer-wide, not a promise for this role). Updated 15 November 2026. ## Key facts - Company: [TikTok](https://realanalystjobs.com/companies/tiktok) - Location: San Jose, California, USA - Work mode: On-site - First seen: Nov 15, 2026 - Employment type: Full time - Experience level: 2 Years - Source: TikTok's careers page (TikTok), re-checked daily ## Visa sponsorship The posting does not say. TikTok had H-1B petitions approved for 454 workers in fiscal year 2026 (USCIS). That is history, not a promise for this role. [See the record](https://realanalystjobs.com/companies/tiktok#h1b-record) ## About this role Our Trust and Safety RD team is fast-growing and responsible for building machine learning models and systems to identify and defend internet abuse and fraud on our platform. Our mission is to protect billions of users and publishers across the globe every day. We embrace state-of-the-art machine learning technologies and scale them to detect and improve the tremendous amount of data generated on the platform. With the continuous efforts of our team, TikTok can provide the best user experience and bring joy to everyone in the world. We are looking for people like you with solid experience in designing and deploying state-of-the-art models in the combination of NLP and CV-related areas. This position will work with a team of excellent research scientists and machine learning engineers who can take initiative, design and develop advanced machine learning solutions, and deploy them directly to TikTok's global platform. Responsibilities - What You'II Do 1. Lead the design, training, and deployment of foundation models, including LLM/VLM, to support a broad range of content safety tasks across modalities. Build general-purpose foundation models with centralized compute and scalable architecture, aimed at improving risk detection, compliance understanding, and moderation automation. 2. Tackle challenges in multilingual, multimodal, and low-resource scenarios by enhancing models’ zero-shot and few-shot generalization across diverse safety domains. 3. Design and maintain a multimodal safety annotation framework, supporting high-quality training data and evaluation signals for both image and video understanding tasks. Explore and implement RLHF strategies to fine-tune model alignment with evolving safety policies and user intent. 4. Collaborate closely with infra, data, and platform teams to optimize large-scale training pipelines, improve model serving efficiency, and leverage centralized GPU resources effectively. 5. Partner with product, policy, and recommendation teams to integrate safety-oriented models into real-world moderation workflows, and continuously optimize for performance and interpretability. Qualifications Minimum Qualifications: 1. Solid experience in traditional machine learning, with over 2 years of research or development experience in large models; passion for technology, and ability to dive deep into coding and debugging. 2. Strong problem-solving skills in the face of complex challenges, with a proven track record of technical breakthroughs and business impact; clear logic and sharp insight. 3. Highly responsible, self-driven, with excellent learning and communication abilities; strong interest in staying up-to-date with advances in multimodal large models. 4. A strong team player, open to exploring new technologies and driving continuous technical evolution. Preferred Qualifications: 1. Publications in top conferences (e.g., NeurIPS, ICML, ICLR, CVPR, ICCV) or experience in competitive AI challenges. Description from TikTok's public careers feed, reproduced so you can read the role here. Apply on the company's own site; Real Analyst Jobs never submits anything for you. ## How to apply Open [this role on Real Analyst Jobs](https://realanalystjobs.com/job/senior-research-scientist-tiktok-trust-and-safety-tiktok-a8f768ff) and use Apply now there to reach the employer's application. The listing is re-checked against TikTok's careers page daily and removed when it closes. ## TikTok 101 open analyst roles on Real Analyst Jobs. [More roles at TikTok](https://realanalystjobs.com/companies/tiktok) ## More like this ### Other open roles at TikTok - [Business Analyst, Business Integrity](https://realanalystjobs.com/job/business-analyst-business-integrity-tiktok-c28aba20), Singapore - [Business Analyst - Global Business Solutions - São Paulo](https://realanalystjobs.com/job/business-analyst-global-business-solutions-sao-paulo-tiktok-14e33f1e), Sao Paulo, Brazil - [Global Quality Operations AI Solutions Specialist](https://realanalystjobs.com/job/global-quality-operations-ai-solutions-specialist-tiktok-b968d27f), Singapore - [Monetization Strategy & Operations Manager - GBS](https://realanalystjobs.com/job/monetization-strategy-and-operations-manager-gbs-tiktok-d9b1af11), Buenos Aires, Argentina - [Risk Analyst](https://realanalystjobs.com/job/risk-analyst-tiktok-900d7b2d), San Jose California, USA (On-site) - [Data analyst jobs in the USA](https://realanalystjobs.com/jobs/data-analyst-jobs-in-usa) - [Analyst job market report](https://realanalystjobs.com/analyst-job-market) - [What analyst roles pay](https://realanalystjobs.com/blog/data-analyst-salaries) ## Sources and links - [This role on Real Analyst Jobs](https://realanalystjobs.com/job/senior-research-scientist-tiktok-trust-and-safety-tiktok-a8f768ff) - [TikTok on Real Analyst Jobs](https://realanalystjobs.com/companies/tiktok) - [All analyst jobs](https://realanalystjobs.com/jobs)