Senior Frontend Developer (SvelteKit)

Location: Fully Remote from Europe
Daytime Schedule

We are hiring a Senior Frontend Engineer to design and build a new web frontend from the ground up using SvelteKit and Tailwind CSS. The mandate is a performance first rebuild: sub-second load times, excellent Core Web Vitals and a clean architecture that the team can scale on for years.
You will own frontend architecture decisions, set the standards for the codebase, and work directly with product, design, and backend to ship a fast, accessible, SEO-strong web experience. You will also be expected to work fluently within an agentic AI development workflow, using AI coding agents as a core part of how you ship.
Responsibilities
Architect and build a new web frontend from scratch using SvelteKit and Tailwind CSS

Define rendering strategy across SSR, SSG, ISR, and edge where appropriate

Hit and hold performance targets: LCP < 2.0s, INP < 200ms, CLS < 0.1 on real-user metrics

Build a reusable component library and design system implementation in Svelte

Translate product requirements and design specs into clean, composable, accessible components

Own SEO fundamentals: semantic HTML, metadata, structured data, sitemap, canonicalization

Set up and enforce testing standards: Vitest for unit, Playwright for E2E

Establish frontend tooling and DX: linting, formatting, type checks, pre-commit hooks, CI gates

Lead code reviews and raise the quality bar across the frontend

Drive technical planning, ADRs, and architecture discussions

Integrate with backend APIs and contribute to API contract design where it affects the frontend

Support CI/CD pipelines and deployments on AWS

Required Skills
Strong production experience with Svelte and SvelteKit

Expert-level TypeScript and modern JavaScript

Deep Tailwind CSS experience, including design token strategy and avoiding utility sprawl

Strong HTML5, CSS3, accessibility and responsive design

Proven track record building high-performance web apps measured against Core Web Vitals

Experience designing scalable frontend architectures from greenfield

Experience building and maintaining reusable component libraries

State management patterns in Svelte (stores, context, runes)

Vitest for unit testing

Playwright for end-to-end testing

Strong Git and GitHub workflow proficiency (PRs, reviews, CI/CD)

Experience with performance monitoring and optimization (Lighthouse, WebPageTest, RUM)

Hands-on experience implementing agentic development workflows using tools such as Claude Code, Cursor or equivalent.

Nice to Have
Experience with edge runtimes (Cloudflare Workers, AWS Lambda@Edge)

Experience deploying to AWS (CloudFront, S3, ECS, or equivalent)

Experience with CI/CD pipelines

Experience implementing design systems end-to-end

Experience integrating AI-powered features into production frontends

Prior experience migrating from React/Next.js to Svelte/SvelteKit