Senior RL Data Platform Engineer — Annotations & Pipelines

Anthropic Limited; New York (NY); Hybrid; USD 500,000 - 850,000; Full time

Benefits offered by this job

Competitive compensation

Equity donation matching (optional)

Generous vacation and parental leave

Flexible working hours

Office space in San Francisco

Job summary

Anthropic Limited is seeking a senior RL Data Platform engineer to design, build, and own end-to-end data collection interfaces and backend services used by researchers and annotators. You will ship web UIs and data pipelines, ensuring reliability, latency, and data quality for RL workflows.

You will closely partner with RL researchers to define data needs, translate them into scalable campaigns, and deliver tooling to production with a focus on user-centric design and robust engineering

Qualifications

• Strong full-stack engineering skills with production experience in TypeScript/React on the frontend and Python on the backend.
• Experience designing and operating backend services and data pipelines that other teams depend on.
• Track record of owning projects end-to-end, from an ambiguous brief to production use.
• Comfort working directly with technical stakeholders whose needs change week to week and the judgment to push back when something isn't worth building.

Responsibilities

• Design, build, and operate the feedback and data collection interfaces used by human annotators, domain experts, and internal researchers.
• Build and maintain the backend services, APIs, and pipelines that route model samples to humans and return structured feedback to training.
• Own the reliability, latency, and usability of systems that run continuously against live model endpoints.
• Partner with RL researchers to translate loosely specified data needs into well-scoped collection campaigns and the tooling to run them.
• Build dashboards, monitoring, and inspection tools so researchers can see data quality and throughput without asking an engineer.
• Identify and remove the bottlenecks between "we want this data" and "it's in the training mix".

Skills

Full-stack

Frontend

Backend

Data pipelines

Education

Bachelor's degree

Tools

TypeScript

React

Python

Job description

Anthropic Limited is seeking a senior RL Data Platform engineer to design, build, and own end-to-end data collection interfaces and backend services used by researchers and annotators. You will ship web UIs and data pipelines, ensuring reliability, latency, and data quality for RL workflows.

You will closely partner with RL researchers to define data needs, translate them into scalable campaigns, and deliver tooling to production with a focus on user-centric design and robust engineering