{"id":2138226,"url":"https://alion.io/job/sweetspot-frontendfull-stack-engineer","title":"Frontend/Full-stack Engineer","company":{"id":32235,"name":"Sweetspot","domain":"sweetspot.ai","url":"https://alion.io/company/sweetspot","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AWS","optional":false},{"name":"FastAPI","optional":false},{"name":"Git","optional":false},{"name":"LLM","optional":false},{"name":"Next.js","optional":false},{"name":"Python","optional":false},{"name":"React Query","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"SQLAlchemy","optional":false},{"name":"TypeScript","optional":false},{"name":"Zustand","optional":false},{"name":"PostgreSQL","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-10-09T02:24:26Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-11T17:49:54Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"As a Frontend/Full-stack Engineer at Sweetspot, you will join a team dedicated to pushing the boundaries of LLM usage over disparate and unstructured data sources across United States federal and state governments. You will play a critical role in building and integrating data pipelines that feed directly into a framework built for the aforementioned. More broadly, you will join a team that is highly focused on building a product that bolsters the American economy and provides every business, regardless of size, the tools they need to secure government opportunities.\nPlease note that this is role is only open to US citizens.\nThings you should know about us\nWe work extensively with industry experts to build software that is useful for our clients. This means frequent customer calls and a constant level of iteration.\nTalent density is far more important than team size. We want to hire the absolute best, and are willing to wait to find the right person.\nIf you're early in your career and/or don't come from a \"prestigious\" background, don't be afraid to apply - we all went to a state school and don't place a large emphasis on prestige.\nWe value engineers who can work across the stack. While this role is primarily frontend, you'll have opportunities to contribute to our Python backend.\nOur office is in Manhattan.\nWhat you'll do\nDesign and implement performant, real-time chat interfaces\nBuild and maintain complex document editors using ProseMirror/Tiptap, including custom extensions and collaborative features\nArchitect state management solutions using Zustand to handle complex application state and real-time updates\nImplement efficient data fetching and caching strategies using React Query to optimize application performance\nCreate accessible, responsive UIs using Radix primitives while maintaining a consistent design system\nOptimize rendering performance for large datasets and real-time updates\nWrite clean, maintainable TypeScript code\nContribute to backend feature development using FastAPI and SQLAlchemy when needed\nRequirements\nStrong proficiency in TypeScript and modern React\nExperience with Next.js, including both client and server-side rendering strategies\nSolid understanding of state management patterns and experience with Zustand or similar libraries\nProficiency with React Query or similar data fetching libraries\nExperience building accessible UIs using TailwindCSS and component libraries like Radix\nStrong knowledge of browser performance optimization techniques\nExperience with Git and modern frontend build tools\nExcellent problem-solving skills and attention to detail\nFamiliarity with Python and SQL best practices\nStrong communication skills and ability to work effectively in a team\nUS citizen\nPreferred qualifications\nExperience with ProseMirror and/or Tiptap, especially building custom extensions\nTrack record of building performant real-time LLM-based chat applications\nExperience with WebSocket integration in React applications\nKnowledge of collaborative editing algorithms and operational transformation\nExperience with SSR optimization in Next.js\nExperience with monitoring and debugging frontend performance issues\nExperience with Python, particularly with FastAPI and SQLAlchemy\nUnderstanding of PostgreSQL and database design principles\nWe offer a competitive salary, comprehensive benefits package, and opportunities for growth and development within a fast-paced and innovative company.\nIf you're passionate about building sophisticated frontend applications, have deep expertise in modern React ecosystems, and are interested in contributing to the growth of the American economy, we would love to hear from you. Sweetspot Chat, Inc. is an equal opportunity employer and values diversity in the workplace. 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