Frontend Engineer (React/Next.js/TypeScript) - AI Start-up

Frontend Engineer | AI Start-up | | React / Next.js / Typescript | 7-Month fixed-term Contract

Join a European deep-tech leader in quantum and AI.

A well-funded, fast-growing company backed by major global investors with its groundbreaking technology is already transforming AI, compressing large language models by up to 95% and cutting inference costs by 50–80%.

This is your chance to be part of a team often described as a “quantum-AI unicorn in the making.”

This is a Hybrid opportunity working out of Zaragoza.

Required Qualifications

• 1–4 years of experience building modern web applications using React (or Next.js) and TypeScript.
• Strong foundation in component-based design, state management (Redux, Zustand, or Recoil), and responsive UI frameworks (Tailwind, ShadCN, or Material UI).
• Experience integrating with REST or GraphQL APIs and visualizing data from backend systems.
• Solid understanding of frontend performance optimization and user experience design principles.
• Experience collaborating with product and design teams to create intuitive, research-driven interfaces.
• Comfortable working in fast iteration cycles — transforming experimental concepts into robust, usable internal tools.

Preferred Qualifications

• Experience building analytics dashboards or R&D workflow UIs (experiment tracking, benchmarking, pipeline monitoring).
• Familiarity with LLM tooling (Hugging Face, LangChain, OpenAI SDKs) or AI productivity interfaces.
• Experience with data visualization (Recharts, Plotly, ECharts) and storytelling through data.
• Understanding of authentication flows (JWT, OAuth2) and API consumption patterns.
• Product sensibility — ability to balance technical feasibility, UX quality, and R&D needs.
• Interest in building the interfaces that bridge ML research and automation infrastructure.

Perks & Benefits:

• Compensation: Competitive salary, with a signing bonus and a retention bonus at the end of the contract.
• Flexibility: This is a hybrid role with flexible working hours. A relocation package is available if needed.
• Culture: We are a fast-scaling company committed to equal pay, diversity, and an inclusive culture. You'll gain international exposure in a multicultural, cutting-edge environment.

Interested? Apply directly through LinkedIn, or send your CV to george@eu-recruit.com

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