Member of Technical Staff - Product Design Engineer

About this role

The Role As a Product Design Engineer at NeoSigma, you will build the developer experience that makes complex AI systems intuitive and easy to understand. You will own the interfaces, visualizations, and interactions that help customers understand and improve their AI systems. You’ll work directly with customers and the engineering team to turn complex technical workflows into polished, developer-first product experiences. This is a deeply technical role at the intersection of engineering, product, and design. You will help define the visual language, interaction patterns, and product experience of NeoSigma — and set the bar for how the product looks, feels, and works. What you'll do Own the developer product end to end, from customer problems to designing and shipping the experience in production. Build technically sophisticated, production-quality interfaces in React and TypeScript, with a high bar for craft. Design rich visualizations and interactions that make complex AI systems, data, and workflows intuitive. Work closely with customers to understand product usage and turn those insights into better product decisions. Prototype, iterate, and ship new experiences quickly, moving fluidly between engineering, design, and product. Own the design system and frontend foundations, raising the bar for how the product looks and feels. Qualifications Strong frontend engineering experience building complex, production-quality applications in React and TypeScript. Exceptional product instincts, with a high degree of ownership from problem definition through execution. Strong visual taste across typography, layout, interaction, motion, and overall product aesthetics. Experience building developer tools, data-intensive products, or sophisticated visualizations and interfaces. Comfortable working directly with customers and turning their feedback into better product experiences. Able to operate fluidly across engineering, product, and design, owning outcomes without unnecessary handoffs. Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience) Our Core Values Customer Obsession - We start with the customer and work backwards. We aim to earn trust through consistent delivery, thoughtful listening, and by obsessing over customers. Intellectual Honesty - We operate with high trust and low ego. Ideas matter more than titles, and we communicate openly and directly while assuming good intent, even in strong disagreement. Bias for Action - We set high standards and move quickly to meet them. We prefer building and learning with customers over debating in the abstract, and we iterate based on real feedback. Extreme Ownership - We take responsibility for outcomes, not just tasks. Ownership means seeing problems through to completion and ensuring solutions truly work in practice. Benefits and perks Competitive salary plus meaningful equity package Comprehensive medical benefits and generous PTO Flexible work arrangements Direct impact on company direction and technical decisions High ownership and the opportunity to make a career-defining impact As a founding member, you’ll help define the technical foundation of NeoSigma. Your scope will grow with the company, from owning core systems end-to-end to shaping architecture, hiring, and engineering culture. This role has a natural path toward technical leadership or engineering management as the team scales. About Us NeoSigma is a product-driven research lab building the intelligence layer that helps close the feedback loop between your customers, products, and AI systems. We are a small, intensely technical team of researchers and engineers who have trained frontier-scale models and widely used AI products and agents at MIT, Parallel Web, Essential AI, Apple, and Amazon.