Anthropic · 2 weeks ago
Cross-functional Prompt Engineer
San Francisco, CA
Full-time
Hybrid
Senior Level
$320K/yr - $405K/yrAnthropic is a public benefit corporation focused on creating reliable and beneficial AI systems. The Cross-functional Prompt Engineer will shape Claude's behaviors across products, ensuring a consistent and safe user experience while addressing behavioral issues and collaborating with research and product teams.
Artificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMachine Learning
Responsibilities
Author and maintain behavior system prompts for each new Claude model release, ensuring consistent and aligned behaviors across products
Deliver meta-prompts for critical research synthetic data pipelines, enabling our alignment and training efforts
Review production prompt changes from product teams and serve as a resource for particularly challenging prompting problems involving alignment and reputational risks
Identify, triage, and prioritize behavioral issues across Claude products, leading incident response for behavioral and policy concerns
Develop behavioral evaluations in collaboration with product teams and alignment research to measure and track Claude's behaviors
Define and streamline processes for rolling out prompt changes, including launch criteria and review practices
Create model-specific prompt guides that document quirks and optimal prompting strategies for each release
Contribute to product evaluations and prompt infrastructure improvements
Track how Claude's behaviors compare to competitors, particularly on safety dimensions
Scale prompting best practices and define success metrics for production behaviors
Qualification
Required
Have extensive prompt engineering experience with large language models, including writing and evaluating complex multi-step prompts
Possess deep knowledge of Claude's behaviors, capabilities, and limitations, with strong intuition for what issues are promptable versus requiring model-layer changes
Can write Python and create behavioral evaluations from scratch
Have excellent judgment about what model behaviors should look like in response to various inputs
Demonstrate strong technical understanding, including comprehension of agent scaffold architectures and model training processes
Excel at working across organizational boundaries, collaborating effectively with research, product, and safety teams
Have core product management skills: prioritization, requirements gathering, stakeholder management, and translating user feedback into actionable specifications
Can independently drive changes through production systems with strong execution and responsiveness
Care deeply about AI safety and model welfare, understanding the ethical implications of model behaviors
We require at least a Bachelor's degree in a related field or equivalent experience
Basic Python familiarity and an ability to navigate unfamiliar codebases
Preferred
Background in philosophy, ethics, or psychology that informs thinking about model behaviors and values
Experience with RLHF, constitutional AI, or other alignment techniques
Track record of writing specifications or guidelines that shape complex system behaviors
Experience responding to safety incidents or behavioral issues in production AI systems
Formal training in ethics or moral philosophy
Published work or demonstrated expertise in AI safety or alignment
Experience building and maintaining evaluation frameworks for language models
Background in data science with emphasis on data quality and verification
Benefits
Equity and benefits
Optional equity donation matching
Generous vacation and parental leave
Flexible working hours
Company
Anthropic
Anthropic is an AI research company that focuses on the safety and alignment of AI systems with human values.
Founded in 2021
501-1000 employees
H1B Sponsorship
Anthropic 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 (105)
2024 (13)
2023 (3)
2022 (4)
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$33.74BKey Investors
Lightspeed Venture PartnersGoogleAmazon
2025-09-02Series F· $13B
2025-05-16Debt Financing· $2.5B
2025-03-03Series E· $3.5B
Leadership Team
Dario Amodei
CEO & Co-Founder
Daniela Amodei
President and co-founder
Recent News
2026-01-13
Company data provided by crunchbase