Full-stack Engineer

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Full-stack Engineer

Engineering

• Tallinn
• Full-time

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Department Engineering

Location Tallinn

Type Full-time

Apply for this role

We read every application and reply either way.

Mtrix is not a dashboard bolted onto someone else's store — brands edit, test, and ship their actual storefronts through our visual builder. Full-stack here means the whole path: the editing canvas in the browser, the APIs that persist and serve it, and the delivery path where our latency is a customer's page speed.

You would work in SvelteKit and TypeScript on the front, Node, Express, and MongoDB on the back. The interesting problems live at the seams — an element you make draggable in the builder has to render perfectly on a production storefront under load.

What you'll do

• Ship features that span the stack: builder canvas, API, data model, and the SDK path that renders it on live stores.
• Extend the visual builder — components, templates, and editing interactions that feel native.
• Design APIs and MongoDB data models that hold up as customers' catalogs and traffic grow.
• Treat storefront-path performance as a feature: profile it, budget it, defend it.
• Debug across the whole surface — from a browser event in the editor to a slow query behind an endpoint.

What we're looking for

• 3+ years shipping full-stack web products in JavaScript/TypeScript.
• Comfortable owning a feature from database schema to polished UI.
• You care about latency the way our customers do — it is their revenue.
• Pragmatic about scope: you would rather ship the honest version this week than the perfect one someday.

Nice to have

• Svelte or SvelteKit in production.
• MongoDB aggregation pipelines, caching layers, or CDN/edge experience.
• Familiarity with Shopify or other ecommerce platform internals.

How we hire

• 01 You apply The form below is the whole application. A few lines on what you have owned beats a long CV — we read every one.
• 02 A real conversation A call about the work, the trade-offs, and whether the job we just described is the job you want.
• 03 A working session A short, realistic exercise close to the actual job. You will know exactly what to expect beforehand.
• 04 A clear answer A yes or a no, with reasons. We would rather respect your time than keep you guessing.

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Applying for Full-stack Engineer — the form is the whole application.

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