UX Developer (Frontend Systems & Design at Scale)

UX Developer (Frontend Systems & Design at Scale)Location: Bellevue, WA (4+ days onsite)Role Type: Full-TimeStart Date: ASAPCompany: Watchtower Labs — https://www.watchtowerlabs.aiCompany OverviewWatchtower Labs is an early-stage, well-funded startup founded by leaders across national security operations, commercial technology investing, and large-scale distributed systems engineering. Our team merges real-world operational experience with deep technical expertise to build AI-native systems designed for critical, mission-driven environments. With guaranteed Department of Defense contracts, we are focused on delivering software that supports human decision-making in complex, high-stakes scenarios.Role DescriptionAs a UX Developer focused on Frontend Systems & Design at Scale, you will build the interfaces that translate complex simulation data and AI-driven behaviors into intuitive, high-performance operator experiences. This role sits at the intersection of engineering, product, and design, with a strong emphasis on craft, usability, and scalability. You’ll often operate with minimal design oversight, owning interaction decisions and frontend architecture for mission-critical systems used in real-world operations.ResponsibilitiesBuild and maintain reusable, high-quality UI components and frontend systemsTranslate complex simulation outputs and agent behaviors into clear, usable interfacesOwn frontend architecture decisions, interaction paradigms, and component designCollaborate closely with backend and AI engineers to build data-rich, real-time UIsEnsure frontend performance, reliability, and scalability in mission-critical contextsEstablish frontend patterns and UX standards that scale with product complexityIterate quickly while maintaining a high bar for polish, usability, and clarityBasic QualificationsStrong professional experience with TypeScript and modern frontend frameworksHands-on experience building production UIs with React and modern tooling (Vite or similar)Excellent UX instincts with strong attention to interaction details and usabilityAbility to independently translate ambiguous requirements into thoughtful UX solutionsComfort working onsite in a fast-moving startup environmentPreferred QualificationsExperience designing and maintaining reusable component libraries or design systemsBackground working on complex, data-dense, or real-time user interfacesFamiliarity collaborating closely with backend and AI teamsInterest in simulation systems, AI-driven products, or operational softwareStrong product mindset and bias toward ownershipTech StackFrontend: TypeScript, ReactTooling: Vite, modern build systemsSystems: Data-rich, real-time interfaces tied to simulation and AI platformsCompensation & BenefitsBase Salary: $170,000 - $200,000Equity: Early-stage equity Benefits: Health, dental, and vision insurance; 401(k) planGrowth Path: Opportunity for expanded ownership and leadership as the company scalesAdditional Job Application TermsThis job is part of LinkedIn’s Full-Service Hiring beta program. Eligibility is limited to candidates located in and performing services in the United States, excluding those based in Alaska, Hawaii, Nevada, South Carolina, or West Virginia.We’re committed to making our hiring process as smooth and timely as possible, and we understand that waiting to hear back can add to the anticipation. If you’re a potential fit, our team will reach out within two weeks to progress you to the next stage. If you don’t hear from us in that time, we encourage you to explore other opportunities with our team in the future, and we wish you the very best in your job search.