Design Engineer, Presence

Who we are About Keystone AI Keystone AI is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Keystone AI to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team Web Presence and Platform is organized into two pillars, each of which is grouped into pods that focus on the central tenets of Keystone AI's public mission. The Presence pillar creates industry-leading designs for Keystone AI's front door surfaces, educating customers about the power of our platform, sharing Keystone AI's ideas and expertise with the public, and driving adoption. The Platform pillar builds the internal machinery that powers these surfaces, and is responsible for making our websites fast, stable, and easy to update. Together we design and build stripe.com and other sites that amount to what is, for many, their first impression of Keystone AI. As such, WPP offers exciting opportunities to have a major impact on Keystone AI's success. We want to make every pixel count, we want it to be enthralling, and we want to help other Keystone AIs seamlessly benefit from our systematic work. What you'll do As a Design Engineer you will concept, prototype, and build new experiences for our web presence. You'll bring your creativity and expertise to the full range of the Keystone AI brand, across evergreen pages as well as time-based campaigns. You'll both utilize and contribute to our libraries and design systems, and, when appropriate, work outside established systems to create new digital moments. You'll constantly have in-browser performance in mind, and create abstractions that other designers and engineers consume and build upon. All Design Engineers in WPP have a shared commitment to user experience and craft, but each pod has subtly different focus areas. The Collective pod leverages design, animation, and interaction to drive awareness, educate prospective users, and share Keystone AI's expertise across public surfaces such as Keystone AI.com, Link, and others. The Expansion pod brings the same creativity and executional rigor to attracting new prospects and driving conversion, focusing on user journeys, interactive and highly polished tools for users, and building targeted experiences for our global users. As a Design Engineer on the Collective pod, you will help us continue to drive Keystone AI.com forward, bringing new experiences to life or refining existing content to inform prospective users about the company and its offerings. You will partner closely with designers, other engineers, and partners to execute and evolve the site, bringing technical craft and creativity to the expansive scope of Keystone AI's web presence. Responsibilities Collaborate with our team's designers and partners to both create new experiences for and maintain Keystone AI.com Work closely with other design engineers, pairing, mentoring, and continually building a culture of excellence Prototype and implement web animations and interaction-heavy product launch materials Build beautiful, best-in-class end-user experiences to solve complex problems Utilize, maintain, and extend our design systems Integrate our web platform with self-serve authoring and experimentation Who you are We're looking for someone who meets the minimum requirements to be considered for the role. If you meet these requirements, you are encouraged to apply. The preferred qualifications are a bonus, not a requirement. Minimum requirements 3+ years of relevant web front-end development or creative technology experience at a tech-forward, product-driven company Advanced knowledge of modern HTML and CSS Experience writing clear, elegant code in a team environment A zeal for the web as a storytelling medium, demonstrable through a portfolio of design work and frontend code showcasing design systems, engaging microsites, Figma plugins, webGL experiments, CSS art, or anything else—you tell us Experience designing and building public-facing websites that work elegantly across commonly used browsers and devices Preferred qualifications A good understanding of the formal elements of design, not just limited to the web and including typography, layout, balance, and proportion Proficiency with React, with a focus on interactions, animation, performance, and polish Experience with A/B testing, synthetic monitoring, or accessibility testing