Senior Frontend Developer

Accountabilities:

As a senior frontend engineer, you will own key technical decisions while establishing a strong foundation for a scalable and performance-focused frontend.

• Architect and develop a new web frontend from the ground up using SvelteKit and Tailwind CSS.


• Define appropriate rendering strategies across SSR, SSG, ISR, and edge computing.


• Establish and maintain performance targets, including LCP below 2.0 seconds, INP below 200ms, and CLS below 0.1 based on real-user data.


• Build and maintain a reusable Svelte component library and scalable design system.


• Translate product requirements and design specifications into clean, composable, responsive, and accessible components.


• Own frontend SEO fundamentals, including semantic HTML, metadata, structured data, sitemaps, and canonicalization.


• Establish frontend testing standards using Vitest for unit testing and Playwright for end-to-end testing.


• Define development tooling and developer experience practices, including linting, formatting, type checking, pre-commit hooks, and CI quality gates.


• Lead code reviews and continuously improve frontend engineering quality and standards.


• Drive technical planning, architecture decisions, ADRs, and broader frontend discussions.


• Integrate frontend applications with backend APIs and contribute to API contract design when relevant.


• Support CI/CD workflows and deployments across AWS infrastructure.


• Monitor, analyze, and optimize frontend performance using tools such as Lighthouse, WebPageTest, and real-user monitoring.


• Incorporate agentic AI development tools into day-to-day engineering workflows to improve delivery speed and effectiveness.

Requirements

The ideal candidate combines strong frontend engineering expertise with architectural ownership, performance awareness, and a modern approach to software development.

• Strong professional experience building production applications with Svelte and SvelteKit.


• Expert-level knowledge of TypeScript and modern JavaScript.


• Deep experience with Tailwind CSS, including design tokens and scalable approaches that prevent utility sprawl.


• Strong command of HTML5, CSS3, responsive design, and web accessibility.


• Proven experience developing high-performance web applications measured against Core Web Vitals.


• Demonstrated ability to design scalable frontend architectures in greenfield environments.


• Experience creating and maintaining reusable component libraries and design systems.


• Strong understanding of Svelte state management patterns, including stores, context, and runes.


• Hands-on experience with Vitest and Playwright.


• Strong Git and GitHub workflow knowledge, including pull requests, code reviews, and CI/CD.


• Experience with frontend performance monitoring, profiling, and optimization.


• Practical experience implementing agentic development workflows with tools such as Claude Code, Cursor, or equivalent.


• Experience with edge runtimes such as Cloudflare Workers or AWS Lambda@Edge is a plus.


• Experience deploying applications to AWS services such as CloudFront, S3, or ECS is advantageous.


• Experience building CI/CD pipelines and implementing design systems end to end is beneficial.


• Experience integrating AI-powered functionality into production web applications is a plus.


• Previous experience migrating applications from React/Next.js to Svelte/SvelteKit is advantageous.

• Fully remote position within Europe.


• Full-time employment with a daytime working schedule.


• Opportunity to build and scale a B2B technology platform from the ground up.


• Up to 28 days of annual leave, in addition to public holidays.


• Truly global remote environment with colleagues working across different regions.


• Significant ownership over frontend architecture, engineering standards, and product performance.


• Opportunity to work with modern technologies including SvelteKit, Tailwind CSS, TypeScript, AWS, and AI-assisted development tools.


• Exposure to greenfield architecture, performance engineering, design systems, accessibility, SEO, and modern testing practices.


• Collaborative environment working closely with product, design, backend, and other technical stakeholders.


• Opportunity to influence the long-term technical direction of a growing platform

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