36 English-speaking jobs in Aragon

**This is initially a Fixed Term Contract until 30th June 2026 - Hybrid in Zaragoza**Responsibilities• Design and develop new techniques to compress Large Language Models based on quantum-inspired technologies to solve challenging use cases in various domains.

**This is initially a Fixed Term Contract - Hybrid from a brand new site in Zaragoza**Responsibilities• Design and develop new techniques to compress Large Language Models based on quantum-inspired technologies to solve challenging use cases in various domains.

If you’re looking for real impact, strategic vision, and a key role within the adtech/data industry… keep reading. We are partnering with a technology company specializing in advanced analytics and mobile data mediation, connecting telecommunications operators with brands, agencies, and advertising platforms. Transforms network data (location, behavior, identity) into actionable insights.

Engineer / Architect – Engineering & Construction Department theleisureway is a multidisciplinary company dedicated to design and execute international, iconic projects in public and commercial environments. Our work ranges from urban planning and mixed-use/commercial spaces to residential, F&B and leisure areas, playgrounds for kids, and any type of creative public space.

Collaborate with cross-functional teams to integrate AI solutions. Mentor junior engineers and share knowledge across the team. Stay ahead of AI trends and emerging LLM technologies. You Bring:Master’s or Ph. D. in AI, CS, Data Science, or related field. 2+ years (Mid) / 5+ years (Senior) hands-on experience with transformers & deep learning.

AI Systems Engineer | LLMs & Generative AI | €55k-€75k p/a | Fixed term contract until June 2026 | Quantum Computing and Software | Zaragoza | Hybrid WFH | Visa sponsored | Machine Learning & Data ScienceWorking arrangements: Hybrid home working, 3 days a week in office, 2 days a week WFHContract: Fixed term short contract only until project end in June 2026Location: Zaragoza, SpainVisa Sponso

We are seeking a Quality Control Engineer to help ensure that advanced AI and large-language-model solutions perform reliably in real-world environments. You will play a key role in validating the technical quality and functional integrity of AI applications delivered to clients.

We’re looking for a Mobile Developer who’s passionate about creating seamless, next-gen mobile experiences — blending AI, LLMs, and cutting-edge quantum tech. This is your chance to work alongside some of the brightest minds in AI and quantum computing, developing solutions that have real-world global impact.

Lead cross-functional teams to deliver impactful machine learning projects for top-tier industry clients, shaping the future of AI deployment worldwide. What You’ll DoLead the full lifecycle of ML and LLM projects: planning, execution, and delivery. Translate complex business requirements into actionable technical plans and roadmaps. Manage project progress, resource allocation, risks, and KPIs.

Machine Learning Engineer (Product) – Fixed-Term ContractLocation: Madrid or Barcelona (Hybrid)Contract: Fixed-term until June 2026We’re looking for a Machine Learning Engineer to join a leading European deep-tech company at the cutting edge of AI innovation.

Collaborate with cross-functional teams to integrate AI solutions. Mentor junior engineers and share knowledge across the team. Stay ahead of AI trends and emerging LLM technologies. You Bring: Master’s or Ph. D. in AI, CS, Data Science, or related field. 2 years (Mid) / 5 years (Senior) hands-on experience with transformers & deep learning.

Fullstack Software Engineer - React or NextJS / Python / Typescript / ML / LLMWe're hiring for an experienced fullstack software engineer with experience in either React or Next. JS and Python for a rapidly expanding deep tech company that is backed by major global investors.

Fullstack Engineer - Fixed Term Contract / Quantum and AIWe’re hiring a number of Fullstack Engineers to help build internal tools and interfaces that support state of the art AI and quantum inspired technologies. This team develops systems that enable extreme compression of large language models, reducing size by up to 95 percent and cutting inference costs by as much as 80 percent.

Required Qualifications 2–5 years of experience across frontend and backend development. Proficient with React/Next. js and TypeScript on the frontend, plus Python (FastAPI/Django) on the backend. Experience building data-intensive dashboards, experiment tracking UIs, or internal automation tools. Strong understanding of API design, data modeling, and frontend–backend integration.

Backend Software Engineer - Python or Go / ML / LLMWe're hiring for an experienced backend engineer with experience in either Python or Go for a rapidly expanding deep tech company that is backed by major global investors. In this position, you will be designing and developing backend systems and working on cutting edge solutions.

Frontend Engineer - Quantum + AI - 9 months contract - Zaragoza, SpainJoin a European deep-tech leader at the forefront of quantum and AI innovation. The team is backed by major global strategic investors and strong EU support, and is already reshaping how AI is deployed worldwide. As the business expands we are now looking for a Frontend Engineer to join the team in Zaragoza.

Backend Engineer - Fixed Term Contract / Infrastructure and AutomationWe’re looking for a number of Backend Engineers to help build robust services and automation pipelines that support next generation AI and quantum inspired technologies.

Backend Engineer - Quantum + AI - 9 months contract - Zaragoza, SpainJoin a European deep-tech leader at the forefront of quantum and AI innovation. The team is backed by major global strategic investors and strong EU support, and is already reshaping how AI is deployed worldwide. As the business expands we are now looking for a Backend Engineer to join the team in Zaragoza.

We are looking for a Backend Engineer who enjoys building reliable, scalable services that power advanced AI and data-intensive applications. In this role, you’ll collaborate with cross-functional teams to transform research-driven concepts into robust production components.

Required Qualifications2–5 years of experience developing and maintaining backend systems in Python or Go. Strong understanding of RESTful API or gRPC design, versioning, and performance optimization. Experience with Docker and basic familiarity with Kubernetes for deploying scalable services. Solid understanding of relational databases (PostgreSQL/MySQL) and schema design.