Research Engineer, Model Evaluations

Anthropic; New York, San Francisco (NY, CA); On-site; USD 320,000 - 485,000; Full time

Benefits offered by this job

Generous vacation and parental leave

Flexible working hours

Lovely office space for collaboration

Job summary

Anthropic in New York City is seeking a Research Engineer to develop evaluations for Claude’s capabilities. The ideal candidate should have strong Python programming skills, experience with distributed systems, and the ability to communicate technical results effectively. Responsibilities include designing evaluations, building infrastructure for running evaluations, and debugging results during training runs. The role offers a hybrid work model and competitive compensation ranging from $320,000 to $485,000 USD.

Qualifications

• Strong Python programming skills, including production or research infrastructure.
• Experience building or operating distributed systems, data pipelines, or other infrastructure that needs to be reliable at scale.
• Clear written and verbal communication, especially when explaining technical results to non-specialists.

Responsibilities

• Design and run new evaluations of Claude’s capabilities.
• Build the distributed eval execution platform.
• Debug anomalous eval results mid-training-run.
• Communicate evaluations and their results to stakeholders.

Skills

Python programming skills

Experience building distributed systems

Clear communication

Experience with large language models

Experience with data visualization

Education

Bachelor’s degree or equivalent

Tools

Data pipelines

Job description

Remote-Friendly (Travel-Required) | San Francisco, CA | New York City, NY

About Anthropic

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

About the role

We're looking for Research Engineers to build the evaluations that tell us — and the world — what Claude can actually do. Your work will turn ambiguous notions of “intelligence” into clear, defensible metrics that researchers, leadership, and the public can rely on.

You’ll design and implement evaluations across the full spectrum of Claude’s capabilities and personality, and build the infrastructure that runs them reliably at scale. You’ll partner closely with researchers throughout the lifecycle of a new capability — from defining what to measure, to running the eval against live training checkpoints, to interpreting the results. The goal is to make Anthropic the leader in extremely well-characterized AI systems, with performance that is exhaustively measured and validated across the tasks that matter.

Key Responsibilities

• Design and run new evaluations of Claude’s capabilities — reasoning, agentic behavior, knowledge, safety properties — and produce visualizations that make the results legible to researchers and decision‑makers
• Build and harden the distributed eval execution platform so hundreds of evals run reliably against checkpoints throughout production RL training runs
• Own the dashboards researchers and leadership use to monitor model health during training, improving signal‑to‑noise, reducing latency, and making regressions impossible to miss
• Debug anomalous eval results mid‑training‑run, determine whether the cause is a model change or an infrastructure issue, and communicate the answer clearly under time pressure
• Improve the tooling, libraries, and workflows researchers use to implement and iterate on evaluations
• Partner with research teams across the full lifecycle of a new capability — from defining what to measure to interpreting results as training progresses
• Run experiments to characterize how prompting, sampling, and scaffolding choices affect results on internal and industry benchmarks
• Communicate evaluations and their results to internal stakeholders and, where appropriate, external audiences
• Strong Python programming skills, including production or research infrastructure
• Experience building or operating distributed systems, data pipelines, or other infrastructure that needs to be reliable at scale
• Clear written and verbal communication, especially when explaining technical results to non-specialists
• Comfort operating in an on‑call or production‑support capacity when training runs are live
• Care about the societal impacts of your work and an interest in steering powerful AI to be safe and beneficial

Representative Projects

• Stand up a new eval that tests a specific reasoning capability from scratch — define the task, build the dataset, implement the scoring, validate against known signals, and ship a dashboard that makes the result legible
• Diagnose a mid‑training regression: an eval suite returns anomalous numbers, and you need to determine within hours whether it's the model, the harness, the data, or the infrastructure
• Take a flaky distributed eval pipeline and make it boring — better retries, better observability, faster feedback to researchers
• Partner with a research team on a new capability area, helping them articulate what “good” looks like and translating that into measurable artifacts

Preferred Qualifications

• Hands‑on experience using large language models such as Claude, including prompting, sampling, and scaffolding
• Background in data visualization and a track record of building dashboards people actually trust and use
• Experience with observability, monitoring, or experiment‑tracking systems
• Background in statistics and experimental design
• Experience with large‑scale dataset sourcing, curation, and processing
• Experience running or supporting ML training infrastructure
• A bias toward picking up slack and operating flexibly across team boundaries
• Enjoy pair programming — we love to pair

Compensation

The annual compensation range for this role is $320,000 – $485,000 USD.

Logistics

Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience

Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience

Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position

Location-based hybrid policy: We currently expect all staff to be in one of our offices at least 25% of the time. Some roles may require more office presence.

Visa sponsorship: We do sponsor visas. We are not able to sponsor every role, but we will make reasonable effort if an offer is made.

Benefits

We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.

Equal Opportunity

As set forth in Anthropic’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.