Senior Design Engineer

AssemblyAI•Los Angeles, CA

21h

About The Position

AssemblyAI builds best-in-class Voice AI models powering the next generation of voice applications. The Voice AI space is at an inflection point, and AssemblyAI is looking for individuals excited to join a small team and help define the future of the industry. AssemblyAI is a capital-efficient AI company with a proven business model and a steep growth trajectory. The company operates as a true meritocracy, with minimal bureaucracy and a focus on giving every team member significant ownership and impact. This role is a rare growth-stage opportunity within a small, impactful team. AssemblyAI is committed to creating an inclusive environment where employees can bring their full selves to work and have equal opportunities to succeed.

Requirements

A strong portfolio of shipped product work that demonstrates real design taste and craft
Genuine UX and visual design ability, from concept through high-fidelity execution
Deep proficiency in Figma, comfortable moving from low-fidelity exploration to high-fidelity, dev-ready designs and maintaining shared component libraries
Solid frontend engineering skills, comfortable building production interfaces in modern React and TypeScript
Fluency with AI-assisted design and development, and a real instinct for building AI-native interfaces
Comfort operating with ambiguity and owning outcomes end to end

Nice To Haves

Motion design chops, comfortable using animation and micro-interactions to make an interface feel alive and guide attention, not just decorate it
Illustration or visual storytelling ability, able to create original graphics, diagrams, or brand-aligned artwork that elevates the product and marketing surfaces
Experience designing for developer platforms or API-first products, and a feel for what makes technical tools intuitive to build on

Responsibilities

Own the visual and interaction design of our core product surfaces, then build them in production React and TypeScript
Set the bar for UX quality across the product: interaction states, motion, hierarchy, and the details that separate a working interface from one that feels considered
Take rough product ideas and turn them into polished, high-fidelity experiences, prototyping quickly to pressure-test direction before we commit
Shape and steward our design system and visual language so quality scales as the product grows
Partner directly with engineering and marketing on direction, not just execution
Use AI tooling and agents as a core part of how you work, designing and shipping faster because of it