> Markdown version of [/jobs/ext/1903824-fullstack-engineer](https://www.wearedevelopers.com/jobs/ext/1903824-fullstack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Fullstack Engineer

- **Company:** KREA LLC
- **Location:** San Francisco, CA, United States
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Computer Animation, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Audit Trail, Computer Clusters, Databases, Database Design, Database Schema, Document Object Model, Github, Design of User Interfaces, Human-Computer Interaction, Transport Layer, PostgreSQL, Node.Js, Open Source Technology, Performance Tuning, Redis, Svelte, Prometheus, Security Assertion Markup Language (SAML), Single Sign-On, TypeScript, WebSocket, Graphics Processing Unit (GPU), Caching, Backend, Kubernetes, Slack, Low Latency, Free and Open-Source Software, Front End Software Development, AWS EKS
- **Published:** July 31, 2026
- **Apply:** https://www.careerbuilder.com/job-details/fullstack-engineer-san-francisco-ca--45430954-b2e8-423e-b64b-fb0177c4b5ff

## About the Role

Amazon Web Services (AWS), Animation, Application Programming Interface (API), Artificial Intelligence (AI), Caching, Canvas, DOM (Document Object Model), Database Design, Database Technology, GPU (Graphics Processing Unit), GitHub, HTTP (HyperText Transport Protocol), Identify Issues, JavaScript, Open Source, Performance Tuning/Optimization, PostgreSQL, Redis, Security Assertion Markup Language (SAML), Single Sign-On (SSO), Slack, User Interface Design, User Interface/Experience (UI/UX)

## Description

* 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


## Related Videos

- [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web)
- [Stack Overflow: Community and AI](https://www.wearedevelopers.com/videos/600-stack-overflow-community-and-ai)
- [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis)
- [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling)
- [WeAreDevelopers LIVE - Streaming HTML](https://www.wearedevelopers.com/videos/2135-wearedevelopers-live-streaming-html)
- [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. Grogg](https://www.wearedevelopers.com/videos/1806-nolojs-avoiding-javascript-cruft-with-html-and-css-aaron-t-grogg)

## Related Articles

- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)
- [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)
- [Dev Digest 129 - Now that's what I call private data!](https://www.wearedevelopers.com/magazine/468-dev-digest-129-now-that-s-what-i-call-private-data)
- [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)