# Fullstack Engineer

**Company:** [Krea](https://hotfix.jobs/companies/krea)
**Location:** San Francisco, CA
**Role:** Fullstack Engineering
**Skills:** Sveltekit, TypeScript, Node.js, Postgres, Redis, WebSockets, Kubernetes, Aws Eks, Http/3, OpenTelemetry
**Posted:** 2025-07-31

> Build and maintain full-stack web/mobile applications with SvelteKit/TypeScript frontend and Node.js backend, focusing on real-time UI, APIs, and performance optimization for AI creative tools. Design responsive experiences and scale infrastructure with Kubernetes and AWS GPU clusters.

## Job Description

## Responsibilities
- 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.

## Requirements
- 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.

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**Apply:** https://hotfix.jobs/jobs/b7243d09-0cdc-499b-ba1a-ffbf14f35f78
**Canonical:** https://hotfix.jobs/jobs/b7243d09-0cdc-499b-ba1a-ffbf14f35f78