ByteDance · 3 days ago
LLM Training Operation Specialist - Seed Global Data
Los Angeles, CA
Full-time
Onsite
Mid, Senior Level
$33.70/hr - $56.03/hr
2+ years expByteDance is a company dedicated to pioneering advanced AI foundation models. The LLM Training Operation Specialist will focus on evaluating, training, and executing projects related to annotating and training Large Language Models with diverse datasets, ensuring effective data production strategies and quality management.
ContentData MiningFoundational AIInternetSocial Media
Responsibilities
Conduct comprehensive analysis and evaluation of AI models
Apply advanced knowledge and judgment to assess model performance and develop insights
Mentor and guide internal colleagues and external partners on specific topics, ensuring the quality and relevance of the evaluation process
Write detailed reports that document and communicate findings from evaluation work
Develop specialized skills in our data and content domain, and use this expertise to enhance the quality and depth of model training and evaluation outputs
Draft and manage training guidelines and casebooks for specific projects and tasks
Support project coordination, offering flexible availability to accommodate discussion meetings with global teams
Deliver high-quality annotation work to create SFT and RLHF data independently with limited supervision
Ensure that all project tasks are executed with a strong focus on quality and efficiency and take ownership of casebooks and guideline updates for scaled annotation
Qualification
Required
Advanced proficiency in English with exceptional writing and analytical skills
Comfortable working in a project-based, fast-paced environment, adaptable to rapidly evolving quality standards driven by research and experimentation
Strong ability to exercise independent judgment and discretion while effectively contributing to a highly collaborative team
Broad exposure to AI tools and platforms; comfortable working in spreadsheet applications
Preferred
Over 2 years of experience in research, consulting, teaching, writing, or equivalent roles. Prior experience in RLHF annotation at AI/LLM companies strongly preferred
Proven self-driven work ethic and demonstrated ability to lead and mentor junior team members in process and project execution
Deep interest in LLMs, human behavior, and user experience, coupled with a strong enthusiasm for continuous learning and engaging with diverse case studies and global teams
Strong working proficiency in AI platforms and Python automation (scripts/notebooks, APIs), enabling faster, more reliable data workflows across evaluation/training and research
Benefits
Medical, dental, and vision insurance
401(k) savings plan with company match
Paid parental leave
Short-term and long-term disability coverage
Life insurance
Wellbeing benefits
10 paid holidays per year
10 paid sick days per year
17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure)
Company
ByteDance
ByteDance is a technology company that develops content creation platforms and services.
10001+ employees
H1B Sponsorship
ByteDance has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1350)
2024 (1123)
2023 (775)
2022 (487)
2021 (417)
2020 (245)
Funding
Current Stage
Late StageTotal Funding
$9.8BKey Investors
Capital TodayG42Tiger Global Management
2025-11-20Secondary Market· $300M
2024-07-25Secondary Market
2023-03-14Secondary Market· $100M
Leadership Team
Jochen Bischoff
Head of Global Business Solutions - Africa
Matty Lin
General Manager, Global Business Solutions, KR
Recent News
2026-01-08
Company data provided by crunchbase