Staff+ Software Engineer, RL Data Platform (AI)

Location: San Francisco, CA or New York City, NY; staff are expected to work from one of the offices at least 25% of the time

Annual salary: $320,000–$405,000 USD

Company

Anthropic builds reliable, interpretable, and steerable AI systems intended to be safe and beneficial for users and society.

What you will do

• Design and operate feedback and data-collection interfaces for human annotators, domain experts, and researchers.
• Build backend services, APIs, and pipelines that route model samples to people and return structured feedback for training.
• Own the reliability, latency, and usability of systems operating continuously against live model endpoints.
• Partner with RL researchers to turn changing data needs into collection campaigns and production tooling.
• Build dashboards, monitoring, and inspection tools for data quality and throughput.
• Identify and remove bottlenecks between data requirements and inclusion in the training mix.

Requirements

• Strong full-stack engineering skills with production experience in TypeScript and React on the frontend and Python on the backend.
• Experience designing and operating backend services and data pipelines used by other teams.
• End-to-end project ownership, from ambiguous requirements through production delivery.
• Ability to work directly with technical stakeholders, assess changing needs, and make sound prioritization decisions.
• Effective use of AI tools in day-to-day engineering work.
• Bachelor’s degree or equivalent education, training, or experience in a relevant field.

Nice to have

• Experience with annotation, labeling, evaluation, or human-in-the-loop data tooling.
• Experience with RLHF, preference data, or human-feedback pipelines for ML systems.
• Experience building researcher-facing or expert-facing internal tools and improving them through user research and experiments.
• Experience with crowdworker or expert vendor platforms at scale.
• Familiarity with LLM training and evaluation.

Culture & Benefits

• Collaborative work across research, engineering, policy, and business disciplines.
• Flexible working hours.
• Generous vacation and parental leave.
• Competitive compensation, benefits, and optional equity donation matching.
• Visa sponsorship may be available; Anthropic provides immigration-lawyer support and evaluates sponsorship by role and candidate.