Remote Frontend Engineer — High-Performance Web Apps

APEXX Global; Barcelona; Híbrido; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote to Start

Hybrid Work

Learning & Growth

Descripción de la vacante

APEXX Global is seeking a Frontend Engineer to build lightweight, high-performance JavaScript/TypeScript SDKs and payment components for merchant integrations. You’ll also craft sophisticated web apps that empower enterprises to understand and configure payments, while ensuring accessibility and security.

You’ll work across design, product, and engineering to evolve frontend architecture and deliver polished, responsive experiences with strong performance across browsers and devices.

Formación

• Proven frontend engineer with high-performance apps.
• Experience with large data-intensive UIs.
• Knowledge of security and accessibility standards.

Responsabilidades

• Design, build, and maintain high-performance JavaScript/TypeScript SDKs and components.
• Develop merchant and internal web apps with responsive, data-rich interfaces.
• Elevate frontend quality with accessible, pixel-precise UI across browsers.
• Collaborate across frontend/backend boundaries and APIs.
• Apply automated testing, performance tuning, and observability during delivery.
• Version and publish client libraries with semantic versioning.
• Partner with Product/Design/Engineering to evolve frontend architecture.

Conocimientos

JavaScript/TypeScript

React

HTML/CSS

Performance

Accessibility WCAG

Security basics

Frontend architecture

Testing/QA

Herramientas

Node.js

Descripción del empleo

APEXX Global is seeking a Frontend Engineer to build lightweight, high-performance JavaScript/TypeScript SDKs and payment components for merchant integrations. You’ll also craft sophisticated web apps that empower enterprises to understand and configure payments, while ensuring accessibility and security.

You’ll work across design, product, and engineering to evolve frontend architecture and deliver polished, responsive experiences with strong performance across browsers and devices.