Fullstack 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 https://www.krea.ai/blog/krea-2-image-model, 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, TypeScript • Design interactive, responsive front-end experiences—drag-and-drop, real-time canvas polish, smooth and responsive UI animations • Optimize frontend performance: minimize render latency, profile UI with virtual DOM techniques, deliver seamless WebSocket image streams • Design and maintain backend services (Node), DB models (Postgres + Redis caching/pooling) • Kickstart a Public API project to serve Krea AI models to millions of developers • Diagnose HTTP/3 and WebSocket related issues both on the client side and the server side • Drive real-time image & video generation pipelines via low-latency APIs • Improve observability and alerting using OpenTelemetry tools • Implement enterprise features: Audit Logs, SAML/SSO, SCIM provisioning • Bonus: 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 performance • Experience with SvelteKit or similar frameworks, real-time UI via WebSockets • Comfortable designing APIs, database schemas, caching strategies • Familiar with infra and scale: Kubernetes, Postgres, Redis, observability stacks • Side projects or open‑source contributions in UI/infra are plus • Bonus: prior work on enterprise auth features, GPU workloads, ML or image/video pipelines Stack: • Frontend: Svelte/SvelteKit • Backend: Node + TypeScript, Postgres, Redis • Realtime: WebSockets, HTTP/3 • Infra: AWS EKS GPU clusters, Kubernetes • Observability: Prometheus, OpenTelemetry, Axiom/HyperDX • Tools: GitHub, Slack, Notion WHAT WE OFFER • Team: Work alongside a world-class team building the future of AI creative tooling • Impact: Significant scope and company-wide impact • Competitive compensation: generous salary & equity packages • Health & wellness: 100% health & 99% dental/vision insurance premiums covered for employees, health FSA accounts, & long-term disability coverage • Time off: Flexible PTO policy • Financial planning: 401k with a 4% company-sponsored match • Meals in the office: breakfast, lunch, dinner • you name it, we'll cover it • Transit: Ubers covered to & from the office • Sponsorship: 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