Senior Software Engineer, UX

AssemblyAI

5d•$180,000 - $240,000

About The Position

AssemblyAI is seeking a Senior Software Engineer to take ownership of the user experience of their product. This role involves designing and building interfaces for developers, such as the Playground and dashboard, with a strong emphasis on visual appeal, interaction, and overall feel. The ideal candidate will possess a robust design background combined with strong frontend engineering skills, and a keen interest in exceptional product design for AI-native, developer-facing products. This is a cross-functional position requiring close collaboration with engineering, marketing, and sales, and the ability to independently move from concept to a polished, shipped product. AssemblyAI is a rapidly growing AI company focused on Voice AI models, processing a significant volume of audio daily and serving a large number of inference calls. They pride themselves on being capital-efficient, lean, and fast-moving, offering employees significant ownership and impact. The company operates as a meritocracy, valuing direct contribution and minimizing bureaucracy. They are committed to diversity and equal opportunity, encouraging applications from individuals of all backgrounds.

Requirements

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

Responsibilities

Own the visual and interaction design of core product surfaces and build them in production using React and TypeScript.
Set the standard for UX quality across the product, focusing on interaction states, motion, hierarchy, and overall feel.
Transform rough product ideas into polished, high-fidelity experiences, utilizing rapid prototyping to test concepts.
Shape and maintain the design system and visual language to ensure scalability.
Partner directly with engineering and marketing on product direction and execution.
Utilize AI tooling and agents to enhance design and development speed.