Frontend Engineer - Fixed Contract until June 2026.

We are seeking a Frontend Engineer to contribute to the development of advanced interfaces that support cutting-edge AI and data-driven workflows.

This role is ideal for someone who enjoys transforming complex technical ideas into clean, efficient, and intuitive user experiences. You’ll be working in a fast-paced environment alongside product specialists, designers, and researchers who rely on your work to visualize and interact with sophisticated backend systems.

What You’ll Do

Build modern, scalable web applications using

React or Next.js with TypeScript

, ensuring clean architecture and maintainable components. Collaborate closely with product and research teams to design UI flows that simplify complex processes and experimental insights. Integrate and consume APIs (REST or GraphQL), ensuring efficient data handling and high-quality rendering of dynamic information. Translate early-stage technical concepts into polished internal tools through quick iteration and user feedback. Focus on

performance optimization

, usability, and accessibility to deliver seamless user experiences. Work with backend engineers on features powered by

Python-based services

and cloud-native infrastructure. Contribute to deployment workflows supporting

AWS and cloud environments

.

Required Qualifications

1–4 years of professional experience building web applications with

React or Next.js + TypeScript

. Working knowledge of

Python

, especially for collaborating on backend features or understanding service interactions. Understanding of

cloud platforms (preferably AWS)

and modern development environments. Strong experience with component-driven UI development, state management (Redux, Recoil, Zustand, etc.), and responsive design systems. Solid experience integrating APIs and handling frontend data workflows. Ability to operate in rapid development cycles, converting prototypes and research concepts into robust tools. Strong communication and team-collaboration skills.

Nice to Have Experience creating dashboards, analytics interfaces, or tools for technical or research-oriented users. Familiarity with LLM or AI tool ecosystems (Hugging Face, OpenAI, LangChain, etc.). Knowledge of data-visualization frameworks (ECharts, Plotly, Recharts, etc.). Understanding of authentication and secure frontend application patterns (OAuth2, JWT). Interest in building tools that support machine-learning, AI, or automation workflows.

Contract Details Fixed-term contract Based in

Zaragoza

, with

3 days per week onsite

If this opportunity motivates you or fits your experience,

apply now

or email

nk@eu-recruit.com

.