Senior Conversation Designer

Slang AI•New York, NY

54d•$155,000 - $198,000•Hybrid

About The Position

Slang AI is seeking an experienced Senior Conversation Designer to build and iterate on its generative AI voice system and create natural, intuitive, and helpful conversational experiences across voice and chat. The role combines design and hands-on technical work, including analyzing conversation transcripts and metrics, evaluating production model performance, and partnering with engineers on prompts and guardrails. The designer will work with product, engineering, and operations to align conversation design with product strategy and will lead research and testing using user research, usability testing, A/B testing, QA, and regression testing. The position reports to the Head of Product and partners with the Lead Conversation Designer to apply and contribute to design standards and processes. Conversation designers are embedded in the engineering team and help shape product implementation. The role also contributes to reusable design patterns and the development of Slang’s conversation design practice. It is hybrid, based at the NYC headquarters three days a week, with occasional travel for company offsites.

Requirements

7+ years of experience designing conversational interfaces, such as voice assistants, IVR systems, or voice AI.
Demonstrated expertise with traditional NLU frameworks and generative AI/LLM technologies.
Experience contributing to design standards and following established processes.
Experience evaluating generative AI agents and using metrics-driven design.
Ability to design and build technically complex flows with multiple logical branches.
Experience with parameter extraction, validation logic, and dynamic response generation.
Strong understanding of programming concepts such as variables, loops, and conditional statements.
Proficiency implementing conversation flows that integrate with external systems via APIs.
Proficiency with conversation design tools and prototyping platforms.
Excellent written and verbal communication skills, with an ear for natural language.
Demonstrated active, hands-on use of AI tools in daily work.

Nice To Haves

Strong understanding of linguistics, conversation analysis, and pragmatics.
Experience with evaluation and analytics tools for measuring conversation performance.
Understanding of accessibility considerations in voice and text interface design.
Experience in the restaurant or hospitality industry.
Familiarity with prompt engineering for large language models.
Background in content design, content strategy, or UX/UI design.
Fluency in Spanish or French.

Responsibilities

Design end-to-end generative AI conversational flows for voice and chat, including conditional logic, parameter handling, and tool calls.
Build error handling and fallback mechanisms that support conversation recovery.
Create and test dialogue that maintains a consistent voice, tone, and personality across the product.
Partner with engineers to define prompts and guardrails for LLM integration and evaluate LLM performance in production.
Analyze conversation transcripts, audio, and metrics to identify friction and translate findings into design improvements.
Define and document conversation design standards, best practices, and reusable patterns.
Drive research and testing using user research, usability testing, A/B testing, QA, and regression testing.
Collaborate with product, engineering, and operations to align conversation design with broader product strategy.