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Senior Frontend Developer

Wearehaystack — Germany · Posted ~3 hours ago

Senior

Skills

TypeScript JavaScript React Next.js Frontend development Testing Jest Vitest

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Summary ✨ AI‑Generated

A software organization is looking for a Senior Frontend Developer to create and maintain high-quality web applications. The role requires strong expertise in modern frontend frameworks, testing practices, and collaborative development processes.

Highlights

Build modern frontend applications with focus on quality, performance, accessibility, and maintainability. Work on scalable digital products and collaborate in an agile environment.

Description

We're hiring on behalf of a Haystack partner! The Role • Build and maintain frontend features for online payment products, writing clean, testable, and maintainable code. • Contribute to the development and upkeep of integration products and SDKs used by internal teams and external partners. • Participate in technical planning, design reviews, and sprint ceremonies, offering perspectives on estimations and improvements. • Reduce technical debt and enhance application performance, observability, and accessibility. • Monitor live services, respond to issues, and provide support for customer requests. What You'll Need • 5+ years of experience in TypeScript and JavaScript. • Hands-on experience building production-grade React and Next.js applications, including SSR and app router patterns. • Experience writing unit, integration, and end-to-end tests using tools like Jest, Vitest, or React Testing Library. • Comfort working within CI/CD workflows and agile environments (Scrum or Kanban). • Experience with UI libraries such as Radix or shadcn, and a solid understanding of accessibility and UX best practices. • A product mindset, caring about merchant value and capable of driving complex features end-to-end autonomously. What's On Offer • Competitive annual salary of €60,000 – €75,000. • Opportunity to work in a truly global, multicultural team. • A dedicated annual L&D budget of €2000 for professional development. • Generous time off: 28 days of paid leave plus public holidays and special leave days. Apply via Haystack today!