Full-Stack JavaScript Developer (Svelte / Node.js)

We are an outsourcing company looking for a Full-Stack JavaScript Developer to join our client — a product company providing hosting and co-location services. The client is actively developing their own infrastructure control panel / client portal used for provisioning services, managing servers and billing.

The product is already in production and used daily by internal teams and customers. At the moment, the main focus is on stability, edge cases and overall product quality rather than adding new features.

The product is a SaaS admin panel for hosting and infrastructure services. The backend integrates with VMware vSphere API through an internal abstraction layer, so experience with infrastructure or virtualization concepts will be a strong advantage.

The tech stack includes Svelte on the frontend and Node.js (Express) with JavaScript on the backend. Swagger / OpenAPI is used for API documentation. The team works in Slack (English), ClickUp, with weekly planning. There are testing, staging and production environments (moving to feature-branch workflow).

In this role you will own features end-to-end (frontend and backend), fix bugs, regressions and edge cases, maintain and extend the existing API (100+ endpoints), and work with Svelte UI flows focused on functionality rather than design. There is no designer and no Figma-based workflow — UI decisions are based on the existing product. You will do basic developer-level testing and work closely with system administrators who validate changes on real servers.

We are looking for a developer with strong Node.js / Express / REST API experience, comfortable working in an infrastructure-oriented product. Swagger / OpenAPI experience is a plus. You should have a practical debugging mindset, be able to quickly reproduce and fix issues, communicate confidently in English and feel comfortable working without a heavy design or UX process.

Nice to have: experience with VMware / vSphere, hosting panels, infrastructure automation, Kubernetes basics or DevOps background.

We offer a 1-month paid trial on real backlog tasks, followed by a performance review. If everything goes well, this is a long-term cooperation. The product is stable, the client is profitable and plans long-term development of the platform.