Full-Stack Frontend Engineer — Hub Portal

We're hiring a Full-Stack Frontend Engineer to own the Hanhaa Hub Portal — the production SvelteKit app that fleet operators, logistics teams and admins use every day to manage orders, journeys, returns, devices, invoicing and live map-based tracking.

This is a frontend-deep role with a real DevOps tail. You won't just write components — you'll own the build, the container, the CI pipeline and the Helm deployment that ships your code to GKE. We're a small team, which means the person who writes the UI is the person who can roll it to production and debug it there.

The backend exposes a typed OpenAPI contract and your client is generated from it, so frontend and backend stay in lockstep.

WHAT YOU'LL OWN

• The entire SvelteKit frontend — a large component library and many routes, with authenticated and public route groups, server-side load functions, and the typed API layer.

• The type-safe API client — generated from the backend's OpenAPI schema and wrapped per resource (orders, journeys, devices, contracts, invoices, returns, geofences and more).

• Map & data-viz surfaces — Mapbox GL journey tracking with clustering, Chart.js / D3 dashboards, emissions and analytics views.

• Auth & session flows — cookie-based JWT sessions, 2FA/MFA, device-trust tokens, RBAC by user group, admin impersonation.

• The delivery path — Docker image build, CI pipeline, container registry and the Helm values that deploy the frontend to GKE.

TECH YOU'LL WORK WITH

SvelteKit 1.27, Svelte 4, TypeScript 5 (strict), Tailwind CSS 3, Melt UI, TanStack Svelte Query 5, openapi-fetch, Mapbox GL 3, Chart.js 4, D3 7, Zod, Vitest, Playwright, Storybook 8 + Chromatic, Vite 4, Docker, Helm, GKE, ArgoCD, Sentry, OpenTelemetry.

WHAT WE'RE LOOKING FOR

• 4+ years building production web apps in a modern component framework — Svelte/SvelteKit strongly preferred, but strong React/Vue engineers willing to go deep on Svelte are welcome.

• Strong TypeScript (strict mode, generics, typed API contracts).

• Solid CSS/Tailwind and a real eye for layout, hierarchy and polish.

• Comfortable with SSR concepts (load functions, hydration, server vs client).

• Experience consuming typed REST APIs — OpenAPI / codegen a big plus.

• Testing discipline: unit + e2e, and you write tests that fail when behaviour breaks.

• Kubernetes — comfortable deploying and operating the app on a cluster (Helm values, rollouts/rollbacks, reading logs, debugging pods). Required.

• Docker — writing and debugging multi-stage builds.

NICE TO HAVE

Helm / GitOps (ArgoCD), GCP (container registry, GKE), CI/CD pipelines, Mapbox GL / Chart.js / D3, OpenTelemetry / Sentry.

WHAT SUCCESS LOOKS LIKE

• 30 days: shipping features and bug fixes to staging; comfortable with the component library, the API client and the deploy pipeline.

• 60 days: independently owning a product area, regenerating the API client on backend changes, and deploying to production with confidence.

• 90 days: driving frontend architecture decisions, improving the design system and observability, and acting as the go-to owner of everything the user sees — from first paint to the GKE pod serving it.

LOCATION

Porto, Portugal. This is a hybrid role — the number of in-office days is open to discussion. You must be based in the Porto area.

• Please apply directly. No agencies or recruiters.