Backend Engineer

Krea

San Francisco, California, United States permanent

Posted: July 31, 2025

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Required Skills

Backend JavaScript TypeScript Svelte Node PostgreSQL Redis WebSockets Kubernetes AWS Observability Monitoring

Job Description

About Krea

At Krea, we are building next-generation AI creative tools.

We are 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.

What you'll do

• Design, implement, deploy, and maintain private APIs for our main web and mobile applications.

• Design database models.

• Fix issues with our system that, among other things, may be related to how HTTP/3 handles client-side connections to our processes.

• Improve database and infrastructure performance by implementing caching solutions or better connection pooling.

• Profile and find bottlenecks for many types of HTTP/WebSockets requests to enable real-time image generation—and even video!

• Improve observability, monitoring, and alerting for our service so that we can better respond to operational incidents

• Scale our service via architectural changes as well as infrastructure improvements

• Open-source any non-trivial innovations that come out of our work on the product

• Design and iterate over software development processes so that we can build an web-native and AI-native creative tools for people.

• Professionalize our main product by adding enterprise-grade features such as Audit Logs, SAML/SSO, SCIM.

Our stack

• Javascript/TypeScript

• Svelte & SvelteKit

• Node, Postgres, and Redis

• WebSockets

• Managed Kubernetes cluster(s) on AWS

• Monitored and observed via Axiom/HyperDX/Prometheus/OpenTelemetry

• GitHub, Slack, Notion

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