Frontend Developer

Frontend Engineer | AI Start-up | | React / Next.Js / Typescript | 7-Month fixed-term ContractJoin 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 applying to this role you understand that we may collect your personal data and store and process it on our systems. For more information please see our Privacy Notice