Your job will be to design and implement reinforcement learning (RL) environments that transform Claude into the best virtual collaborator, training on realistic tasks from navigating internal knowledge to creating financial models.

Responsibilities:

• Training Claude on document manipulation with good taste, including understanding, enhancing, and co-creating (e.g., Office doc formats, data visualisation)

• Designing and implementing reinforcement learning pipelines targeted at virtual collaborator use cases (productivity, organisational navigation, vertical domains)

• Building and scaling our data creation platform for generating high-quality, open-ended tasks with domain experts and crowdworkers

• Integrating real organisational data to create realistic training environments

• Developing robust evaluation systems that maintain quality while avoiding reward hacking

• Partnering directly with product teams (e.g., Cowork, claude.ai) to ensure training aligns with product features

You may be a good fit if you:

• Are a very experienced Python programmer who can quickly produce reliable, high-quality code that your teammates love using

• Have 5-8 years of strong machine learning experience

• Thrive at the intersection of research and product, with a pragmatic approach to solving real-world problems

• Are comfortable with ambiguity and can balance research rigor with shipping deadlines

• Enjoy collaborating across multiple teams (data operations, model training, product)

• Can context-switch between research problems and product engineering tasks

• Care about making AI genuinely helpful for everyday enterprise workflows

Strong candidates may also have experience with:

• Creating RL envs for realistic tasks

• Reward modelling and preventing reward hacking

• Building human-in-the-loop training systems or crowdsourcing platforms

• Working with enterprise tools and APIs (Google Workspace, Microsoft Office, Slack, etc.)

• Developing evaluation frameworks for open-ended tasks

• Domain expertise in finance, legal, or healthcare workflows

• Creating scalable data pipelines with quality control mechanisms

• Translating product requirements into technical training objectives

Deadline to apply: None. Applications will be reviewed on a rolling basis.

The annual compensation range for this role is $500,000-$850,000 USD.

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We are seeking a highly skilled Senior Systems Designer to join our team at Epic Games. As a Senior Systems Designer, you will be responsible for designing and implementing key features related to progression, economy, and gameplay balance for a new game project.

What You Will Do

• Collaborate closely with project leads and directors to shape and evolve complex design systems that support engagement, gameplay, and creative vision
• Design, document, prototype, and iterate on these systems working with a multidisciplinary team of developers, and oversee their successful implementation from start to finish
• Participate actively in creating scripts, data, and content required by these systems by diving into the engine and leveraging other tools
• Solicit and integrate proactive feedback from the entire team to ensure a fun and engaging experience for players
• Develop and iterate on these systems once they are deployed in live environment to ensure the game remains engaging and fun for players

What We Are Looking For

• More than 5 years of experience in delivering titles as a systems designer, having worked on progression, economy, game systems, and gameplay balance
• Experience working in multiplayer live service environments and ability to work directly in Unreal Engine, with mobile game experience being a plus
• Demonstrated talent for empathy towards players and a deep understanding of their motivations, play forms, and the effects of progression and objectives on the gaming experience
• Strong interest in game progression and economy, and understanding of their success mechanisms
• Ability to take initiative and react quickly to changing project needs, orient decisions, and assume results and vision
• Player-focused, passionate, solution-oriented, and innovative - these traits are a guarantee of success at Epic and influence everything we do

Benefits

We pay 100% of employee and dependent benefits premiums, and offer additional coverage for medical, dental, and vision care, serious illness, telemedicine, life insurance, death or mutilation by accident insurance, and long-term disability insurance. We also offer a weekly indemnity (short-term disability) and a retirement savings plan with employer matching contributions. In addition to the employee assistance program, we offer a comprehensive mental well-being program through Modern Health, an organization that provides free therapy and coaching services to employees and dependents.

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