Full Stack Engineer

About Krea At Krea, we are building next-generation AI creative tools. We're dedicated to making AI intuitive and controllable for creatives - our mission is to build tools that empower human creativity, not replace it. We believe AI is a new medium that allows us to express ourselves through various formats - text, images, video, sound, and even 3D. We're building better, smarter, and more controllable tools to harness this medium. We recently took this a step forward with the launch of Krea 2, our first foundation model, built completely from scratch for aesthetic diversity and stylistic control. We've raised over $83M and are backed by world-class investors such as a16z, Bain Capital, and Abstract. We work full-time and in-person at our waterfront office in San Francisco. We care about creativity: our team includes musicians, designers, visual artists, and engineers. Some examples of things you will do: Build and maintain APIs and UI flows for web + mobile in Svelte/SvelteKit, TypeScriptDesign interactive, responsive front-end experiences—drag-and-drop, real-time canvas polish, smooth and responsive UI animationsOptimize frontend performance: minimize render latency, profile UI with virtual DOM techniques, deliver seamless WebSocket image streamsDesign and maintain backend services (Node), DB models (Postgres + Redis caching/pooling)Kickstart a Public API project to serve Krea AI models to millions of developersDiagnose HTTP/3 and WebSocket related issues both on the client side and the server sideDrive real-time image & video generation pipelines via low-latency APIsImprove observability and alerting using OpenTelemetry toolsImplement enterprise features: Audit Logs, SAML/SSO, SCIM provisioningBonus: Scale our infra architecture through deep understanding of our AWS EKS GPU clusters or Kubernetes operators Strong candidates may have experience with the following: Solid full-stack JS/TS engineer with frontend focus—component design, UI state, animations, client performanceExperience with SvelteKit or similar frameworks, real-time UI via WebSocketsComfortable designing APIs, database schemas, caching strategiesFamiliar with infra and scale: Kubernetes, Postgres, Redis, observability stacksSide projects or open‑source contributions in UI/infra are plusBonus: prior work on enterprise auth features, GPU workloads, ML or image/video pipelines Stack: Frontend: Svelte/SvelteKitBackend: Node + TypeScript, Postgres, RedisRealtime: WebSockets, HTTP/3Infra: AWS EKS GPU clusters, KubernetesObservability: Prometheus, OpenTelemetry, Axiom/HyperDXTools: GitHub, Slack, Notion What we offer Team: Work alongside a world-class team building the future of AI creative toolingImpact: Significant scope and company-wide impactCompetitive compensation: generous salary & equity packagesHealth & wellness: 100% health & 99% dental/vision insurance premiums covered for employees, health FSA accounts, & long-term disability coverageTime off: Flexible PTO policyFinancial planning: 401k with a 4% company-sponsored matchMeals in the office: breakfast, lunch, dinner - you name it, we'll cover itTransit: Ubers covered to & from the officeSponsorship: We're open to sponsoring international visas where we can (e.g., STEM OPT, OPT, H-1B, O-1, E-3). And more! Please note the above benefits & perks are for full-time employees