Senior Product Design Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Product Design Engineer based in the United States. As a Senior Product Design Engineer, you will help shape polished, high-quality experiences across privacy-focused consumer products used by millions of people. You’ll operate at the intersection of product design and engineering, turning concepts and interactions into production-ready experiences. The role combines hands-on coding, prototyping, design systems, motion, accessibility, and close collaboration with front-end engineers. You’ll independently lead high-impact projects from ambiguous problem definition through execution, launch, and measurement. Your work will directly influence product quality, interaction standards, and the evolution of the design engineering discipline. You’ll also have an opportunity to help establish practices and workflows for a growing design engineering function. The environment emphasizes autonomy, thoughtful collaboration, experimentation, and end-to-end ownership. Lead complex product design and design engineering initiatives from ideation and problem definition through implementation, release, and post-launch evaluation, establishing clear goals and success criteria. Translate product concepts and visual designs into high-quality, production-ready experiences by working directly in the codebase and partnering closely with front-end engineers. Create detailed prototypes, mockups, interaction specifications, and coded explorations that communicate design intent and demonstrate expected behavior. Help maintain and raise the product quality bar across consumer experiences, identifying gaps between intended designs and shipped functionality and driving improvements to resolution. Contribute to and evolve design systems across both design and code, including token structures, semantic naming, primitives, components, and consistency between design sources and implementation. Develop tools, workflows, and practices that improve the speed, consistency, and quality of both design and engineering work. Apply strong expertise in interaction and motion design, including transitions, easing, spring physics, and real-world interaction behavior, to create refined user experiences. Partner with cross-functional stakeholders and engineers as a peer, contributing to technical discussions, code reviews, product decisions, and implementation strategy. Use qualitative and quantitative research, experimentation, and product instrumentation to validate decisions and measure the impact of design solutions. Help shape the design engineering discipline by establishing effective practices, sharing knowledge, and identifying opportunities to improve collaboration between design and engineering. Use AI and agentic tools thoughtfully within design and project workflows to accelerate execution while maintaining strong judgment, quality, accessibility, and human-centered design principles. Requirements 7+ years of experience in product design, design engineering, or closely related roles, including at least 2 years operating at a senior level within significant consumer-facing or global brands. Strong ability to communicate visual and interaction concepts through polished mockups, prototypes, design rationale, and clear written and verbal communication. Demonstrated ability to work directly with engineers as a peer, participate meaningfully in code reviews, reason through implementation decisions, and contribute code when appropriate. Experience prototyping directly in code to a production-quality standard, with strong knowledge of semantic markup, accessibility, and modern front-end practices. Deep understanding of interaction and motion as implemented behavior, including easing, spring physics, transitions, and responsive or interruptible interactions. Strong experience designing and maintaining sophisticated design systems, includin