frontend developer English-speaking jobs in León

Buyer – ITAD & Marketplaces will purchase IT hardware, manage pricing and margins, identify commercial opportunities, and negotiate with suppliers.

Design, implement, and maintain robust Linux-based systems on embedded platforms. Responsibilities include bringing up Linux on ARM Cortex-A and AMD Versal architectures, configuring bootloaders and kernels, integrating device trees and drivers, and setting up build systems.

Experienced Private Wealth Adviser needed to build and manage relationships with high-net-worth clients, providing comprehensive financial planning and investment advice. Requires Level 4 & CYSEC qualifications and proven success in wealth management.

Tradebe Health & Nutrition and Tradebe Life Sciences seek a Financial Planning and Analysis Accountant to support financial planning, forecasting, and analysis for the Health and Nutrition and Flavors and Fragrances businesses. The role involves partnering with business units to provide insights into performance, preparing budgets and forecasts, and conducting ad-hoc analysis.

Zimmermann seeks an Omni-Channel Stock Coordinator for a 7-month fixed-term, part-time position (20 hours/week) in its El Corte Ingles Serrano Madrid boutique. Responsibilities include online order dispatch, stockroom organization, inventory management, loss prevention, stock presentation, and administration. The ideal candidate has prior leadership experience, strong organizational skills, a passion for fashion retail, and fluency in English and Spanish.

Leads direct material procurement activities across Iberian manufacturing sites, executing global commodity strategies and managing end-to-end sourcing.

Leads technical initiatives to strengthen payment system reliability, including designing monitoring tools, dashboards, and disaster recovery plans. Investigates production issues, analyzes system inefficiencies, and contributes to a resilient payment architecture. Architects and sets up new data centers, develops data protection plans, and ensures data integrity and security.

Teach Biology, Physics, and/or Chemistry in English to inspire scientific curiosity in an international environment. Minimum 2 years teaching experience, preferably in international settings, required.

German-speaking Business Development Representative to manage client accounts, conduct market research, and generate qualified leads through outbound outreach.

Full Stack Software Engineer to develop data-intensive dashboards, experiment tracking UIs, and internal automation tools. Requires 2-5 years of experience with React/Next.js, TypeScript, Python (FastAPI/Django), SQL databases, and containerized development. Experience with AWS or cloud-based deployment environments is also needed.

QA Intern to join Product team ensuring quality of web applications, mobile apps, and backoffice tools through manual testing. Collaborate with product managers, developers, and stakeholders to validate new developments and catch issues early.

Guide and mentor an engineering team, architect and design scalable MarTech solutions, and lead technical project implementation. Collaborate with product managers, marketing teams, and stakeholders to align technical strategy with business goals.

Visual Merchandiser / Stylist & Trend Forecasting Specialist will develop and execute visual merchandising strategies across e-commerce, retail, and wholesale channels. Responsibilities include collaborating with the Creative Director and Design Team on collection themes and inspirations, building seasonal assortments, and providing styling guidance for product photography and online presentations. The role also involves monitoring market trends, analyzing product performance, and developing trend reports to inform product direction and merchandising priorities.

Senior Data Scientist / AI Engineer will design and maintain multi-agent architectures for security incident triage. Develop and refine machine learning models to assess and score incidents. Integrate and orchestrate tools and agents to automate the triage process. Collaborate with project teams and document system logic and workflows.

Fullstack AI Engineer will architect and build end-to-end AI applications, fine-tune models using LangChain or LlamaIndex, and write scalable code in Python and TypeScript.

Solutions Engineer will design and implement AI security solutions for enterprise clients. This role involves understanding customer needs, leading technical workshops, and collaborating with sales and engineering teams. Requires 4+ years of experience in solutions engineering, technical consulting, or similar roles.

Senior Purchasing Manager needed for large-scale Gigafactory construction project in Spain. Define procurement plans, develop commercial strategies, and manage contracts for construction services, engineering, and materials. Lead tendering processes, vendor selection, and negotiations. Manage contractual change orders, project-related negotiations, and vendor payments.

The Business Development Manager (Enterprise Hunter) will manage the sales cycle for new logo acquisition, selling GTT's full suite of products and solutions. The role requires 3+ years in an enterprise sales role and 5+ years in selling connectivity.

Quantitative AI/ML Engineer to lead research, development, and deployment of advanced ML systems powering algorithmic trading strategies. Design predictive models, optimize trading logic, and ensure performance and explainability. Strong Python, data science, and ML framework experience required.

Revenue Analyst to develop and implement ticketing strategies for ATP, WTA & ITF tournaments. Analyze sales data, pricing trends, and market demand to optimize revenue across distribution channels. Requires 3+ years of experience in revenue analysis, pricing, or data analytics. Proficiency in Excel and data analysis tools is essential.