This role focuses on pushing the frontier of reward modeling for large language models. You'll develop novel architectures and training methodologies for RLHF, research new approaches to LLM-based evaluation and grading (including rubric-based methods), and investigate techniques to identify and mitigate reward hacking. You'll collaborate closely with teams across Anthropic, including Finetuning, Alignment Science, and our broader research organization, to ensure your work translates into concrete improvements in both model capabilities and safety.

We're looking for someone who can drive ambitious research agendas while also shipping practical improvements to production systems. You'll have the opportunity to work on some of the most important open problems in AI alignment, with access to frontier models and significant computational resources. Your work will directly advance the science of how we train AI systems to be both highly capable and safe.

Responsibilities:

• Lead research on novel reward model architectures and training approaches for RLHF
• Develop and evaluate LLM-based grading and evaluation methods, including rubric-driven approaches that improve consistency and interpretability
• Research techniques to detect, characterize, and mitigate reward hacking and specification gaming
• Design experiments to understand reward model generalization, robustness, and failure modes
• Collaborate with the Finetuning team to translate research insights into improvements for production training pipelines
• Contribute to research publications, blog posts, and internal documentation
• Mentor other researchers and help build institutional knowledge around reward modeling

You may be a good fit if you

• Have a track record of research contributions in reward modeling, RLHF, or closely related areas of machine learning
• Have experience training and evaluating reward models for large language models
• Are comfortable designing and running large-scale experiments with significant computational resources
• Can work effectively across research and engineering, iterating quickly while maintaining scientific rigor
• Enjoy collaborative research and can communicate complex ideas clearly to diverse audiences
• Care deeply about building AI systems that are both highly capable and safe

Strong candidates may also

• Have published research on reward modeling, preference learning, or RLHF
• Have experience with LLM-as-judge approaches, including calibration and reliability challenges
• Have worked on reward hacking, specification gaming, or related robustness problems
• Have experience with constitutional AI, debate, or other scalable oversight approaches
• Have contributed to production ML systems at scale
• Have familiarity with interpretability techniques as applied to understanding reward model behavior

The annual compensation range for this role is $350,000-$500,000 USD.

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This is a full-time position based in Japan. The CS Specialist, Premium Support functions on the front line interacting directly with both customers & internal stakeholders. As a CS Specialist, Premium Support, you will be responsible for providing end-to-end support to key members of our community, including but not limited to the Luxury segment.

You will primarily take ownership of cases, ensuring complete resolution while fostering strong relationships with our users along the way. CS Specialist, Premium Support needs strong communication skills, problem-solving abilities, and customer service expertise. They should also be adaptable and responsive in our fast-paced environment, sometimes under pressure, while remaining flexible, proactive, resourceful, efficient and demonstrating a high level of professionalism and confidentiality.

As part of this role, you are required to be flexible and may be required to move to different teams within Community Support and/or take up different responsibilities from those set out below. The ideal candidate will be open to a role which will evolve based on business needs and will be flexible to meet those needs.

A Typical Day: The responsibilities listed below are not exhaustive. Given the fast-moving nature of this work, the responsibilities set out below may change and additional duties may be assigned as needed.

Complex case management: Provide the highest level of service to our community in each and every case - Interact with Airbnb customers and community members through all current and future channels, both inside and outside of Airbnb tools, including but not limited to livechat, social platforms, messaging, and directly through the phone - Take end-to-end ownership of all assigned cases: ensuring a complete final resolution (or settlement, final decision, etc) is reached based on workflows & management guidelines, fostering the relationship with our users along the way, and escalating accurately to other teams when appropriate - Demonstrate ownership mentality & good judgment as well as skill to question, adapt, and deviate from the workflow when needed only through management approval - Be highly receptive to feedback from Management and Quality, and quickly adopt behaviors to improve the quality of your work - Understands multiple perspectives on a topic or situation, and able to evaluate and present multiple options for addressing a problem - Can be brought to engage more with senior stakeholders and to collaborate cross-functionally, with help from management

Combining efficiency with bespoke quality: Provide personalized and exceptional customer support to guests and Hosts, ensuring their unique needs and preferences are met with the highest level of care and attention - Displays an ability to handle a larger volume of cases without negatively impacting the quality of the interaction & the resolution - Proactively anticipate and identify opportunities to enhance the user experience, and with the support of management, offers tailored solutions and recommendations that go above and beyond their expectations, and ensuring a seamless and memorable experience throughout their interactions with Airbnb - Resolve user issues quickly and to a high level of mutual satisfaction, considering specific context and circumstances - Personalize communications to users, demonstrating the highest hospitality standards

Participating in your team’s improvement: Leverage your functional operational knowledge to proactively support the team success - Provide insights about community experience and continuous improvement opportunities to your Management - Help document ways of working, best practices, and the norms for your service(s) as requested by management - Provides technical/functional/SME to less experienced members of the team - Shares ideas to improve processes and ways of working - Willing to take on various tasks and responsibilities as needed (including moving teams) and showing openness to new challenges and a proactive approach to work

Stakeholder engagement: You have gained the trust of internal & external stakeholders through effective relationship management and delivering results - Displays flexibility, openness and approachability when resolving issues - Understands key drivers of your function and how they relate to one another, as well as the business impact of those metrics - You are on-call to handle emergency situations in the evenings & weekends

Your Expertise:

Your background & experience - 3+ years of relevant experience in multicultural customer service teams, preferably in the hospitality industry (experience with high-profile and influential clientele is preferred) and in a role making calls and handling customer/client contacts - Hospitality experience is a plus, in particular working for technology platforms. Prior experience using phone, messaging, or live chat to interact with users/customers is preferred. - Experience engaging with executive-level stakeholders to resolve conflicts in a detailed, effective and timely manner, and demonstrated ability to explain complex ideas simply and clearly. - Ability to work weekend days and public holidays, as well as early morning / evening shifts. Your schedule can change to meet business needs

Your skills & expertise - Very good verbal and written communication skills for providing exceptional customer service to guests/hosts & engage with stakeholders - Active listening skills to understand guest needs and provide personalized recommendations and assistance - Empathy and patience in dealing with customers, especially in high-pressure situations - Ability to organize a high volume of work, multitask & prioritize, and to work within prescribed schedules including breaks, lunches, and training time - Passion for delivering exceptional customer service and setting a high bar - Ability to thrive in an ambiguous, fast-paced, and complex environment, acting proactively to respond quickly and decisively - Ability to adapt to new tasks and responsibilities as needed. - Proactive attitude towards embracing new challenges and adjusting to changing priorities and environments. - Capable of adjusting to evolving roles and job duties with openness and flexibility, as well as moving to a new team. - Good computer skills, including Apple/Mac OS, Google Suite, and familiarity with CRM systems and the ability to quickly learn new tools - Language proficiency both English and Japanese

Our Commitment To Inclusion & Belonging:

Airbnb is committed to working with the broadest talent pool possible. We believe diverse ideas foster innovation and engagement, and allow us to attract creatively-led people, and to develop the best products, services and solutions. All qualified individuals are encouraged to apply.

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We believe the future of law will be built by 'AI-Native Law Firms' - firms that are managed, scaled, and optimized by intelligent systems rather than manual processes and endless administrative work.

Our technology augments the capabilities of attorneys across every stage of a case - from intake and document review to strategy and settlement - so they can focus on what truly matters: achieving the best outcomes for their clients.

What You Will Accomplish:

• Drive Revenue Growth: Own the full sales cycle for strategic, large accounts, from prospecting to close, and achieve or exceed revenue targets.

• Account Management: Develop and maintain strong relationships with key stakeholders at large organizations, understanding their business challenges and positioning Eve’s solutions effectively.

• Strategic Engagement: Lead complex sales processes that require strategic thinking and tailored approaches to meet the unique needs of large clients.

• Cross-Functional Collaboration: Work closely with product, marketing, and customer success teams to ensure client satisfaction and long-term value delivery.

• Market Influence: Provide feedback to the product team on market trends and client needs, helping to shape Eve’s product roadmap.

What We Are Looking For:

• Enterprise Sales Experience: Proven track record of success in a strategic or enterprise account executive role, selling to large organizations and closing deals $1m+.

• Consultative Selling: Ability to engage in complex sales cycles with multiple stakeholders, using a consultative approach to understand and address client needs.

• Strategic Mindset: Comfortable navigating long sales cycles and developing account plans to drive sustained business growth.

• Relationship Builder: Exceptional skills in building and nurturing relationships with key decision-makers.

• Driven & Results-Oriented: Strong focus on achieving targets with a strategic and adaptable approach.

Proven ability to develop and implement sales playbooks that drive effective and repeatable outcomes.

Nice to Have:

• Experience selling high-value solutions in a competitive and evolving market.

• A strategic approach to account planning and management, focusing on long-term success.

• The ability to work independently while being a collaborative team player.

• Strong negotiation and communication skills, with the ability to articulate complex ideas clearly.

Additional Information

Benefits: Competitive Salary & Equity, 401(k) Program with Employer Matching, Health, Dental, Vision and Life Insurance, Short Term and Long Term Disability, Commuter Benefits, Autonomous Work Environment, Office Setup Reimbursement, Flexible Time Off (FTO) + Holidays, Quarterly Team Gatherings, In office Perks

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