Product Designer

Meta Business Agent is seeking a Product Designer to bring an end-to-end multi-modal AI agent vision to life. The role focuses on business- and customer-facing agent experiences across chat, voice, and visual surfaces, including prompt design, evaluation strategy, and multimodal quality systems.

Responsibilities

• Write and revise prompts that shape Meta agentic tools, features, and behaviors on a product surface.
• Test the product surface, translate findings into prompt improvements, ship updates, and verify that the delivered experience matches the intended prompt behavior.
• Package prompt limitations into training inputs, including graders for crisp behaviors and human-feedback questions with good/bad pairs for fuzzier tasks such as writing quality.
• Partner with engineering and data science to define what strong agent output looks like across chat, voice, and visual surfaces, and drive the evaluation strategy to measure it.
• Expand evaluation coverage beyond text to include voice and visual agent output, defining how quality is judged when the surface itself is conversational or visual.
• Define quality bars that remain consistent across a long tail of businesses, supporting a single agent specification from small business through enterprise without bespoke rework.
• Prototype new ideas and experiences quickly to help the team prioritize new workstreams based on impact and feasibility.
• Define, evolve, and unify visual and interaction systems that scale across products and platforms.
• Define evaluation strategy and build eval components such as golden sets and judges, both independently and in collaboration with data science and engineering.
• Leverage familiarity with code to update language and prompts using internal tools, review changes to confirm the shipped experience, and build logic that adapts agent behavior to context.
• Work with product and cross-functional partners to establish a strategy for multi-modal agent communication.
• Present design strategy and rationale to leadership and cross-functional executives, shaping alignment on product direction and influencing org-wide priorities across product, engineering, research, and content strategy.

Requirements

• Bachelor’s Degree in HCI, design, or other related fields, or equivalent work experience designing and building agentic experiences.
• 11+ years designing software products with a focus on user experience, interaction, and visual design aligned to business objectives.
• Experience building and maintaining evaluation pipelines for LLM products, including graders, rubrics, comparison sets, regression suites, and the infrastructure that runs them across models.
• Experience designing and building agentic experiences.
• B2C or B2B experience.
• Deep expertise in prototyping tools, with the ability to evaluate and advance design craft across different fidelity levels.

Preferred Qualifications

• Experience adhering to and implementing responsible, ethical AI practices such as risk assessment, bias mitigation, and quality and accuracy reviews.
• Experience integrating AI tools to optimize or redesign workflows and drive measurable impact, such as efficiency gains or quality improvements.
• Experience turning product rubrics into training signal, including graders, human-feedback questions, or preference pairs.
• Experience shaping agent behavior on voice or other multi-modal surfaces.
• Demonstrated ongoing AI skill development, including prompt and context engineering or agent orchestration, and staying current with emerging AI technologies.
• AI-native design fluency, including experience with model design, generative AI logic, and defining assistant behavior and tone at the systems layer, not only surface-level copy.
• Front-end or notebook-to-app experience, and opinions about what makes an eval result legible at a glance.
• Experience with both B2C and B2B is preferred.

Education

Bachelor’s Degree in HCI, design, or other related fields.

Compensation and Location

• Location: Seattle, WA (onsite)
• Salary: USD 201,000 - 278,000 per year