frontend developer English-speaking jobs in León

Procurement Manager for the Rail Baltica project. Develops and manages procurement plans for materials and services. Evaluates suppliers, manages the procurement process, and monitors supplier quality. Requires a bachelor's degree and 15+ years of relevant experience.

Technical Field Engineer & Quality Manager providing customer support, troubleshooting, and repair of plasma, vacuum, and coating equipment. Manages ISO 9001 quality system and offers technical and commercial support, including analyzing quotations and preparing technical offers.

Full Stack Node.js/MongoDB Engineer to develop and maintain web applications integrating AI solutions for financial institutions. Requires proficiency in Node.js, MongoDB, AI/ML models, and front-end frameworks.

Logistics Coordinator will manage and support logistics execution from Europe to Central Asia and/or from the Far East to Central Asia. Responsibilities include communicating with the client's logistics team, preparing logistics documentation, and assisting with dispute resolution.

Experienced Sales Agent sought to manage and expand existing customer base in Spain and Portugal. Responsibilities include acquiring new wholesalers, developing distribution networks, and executing sales strategies. Requires fluency in Spanish and English, proven sales experience in foodservice or retail, and a strong entrepreneurial drive.

Software Development Intern will participate in the digitalization and automation of business processes across departments. Responsibilities include designing, developing, and testing technological solutions, documenting processes, and presenting results.

Opdenergy seeks a General Ledger Accountant in Madrid to support Spanish projects. Responsibilities include calculating financial transactions, analyzing project progress, and reconciling accounts. Candidates should have a finance degree, experience in similar roles, and proficiency in Excel.

Site Technician to support daily operations of a data center in Madrid. Responsibilities include preventative maintenance, monitoring systems, supporting customer deployments, and responding to technical issues. Requires experience in critical environments, technical knowledge of mechanical/electrical systems and IT connectivity, and strong problem-solving skills.

AI Engineer will design, build, and operate AI models for a health tech platform that transforms medical laboratory data into actionable clinical insights. Responsibilities include building model pipelines, integrating LLMs, developing APIs, and ensuring system reliability. Requires a computer science background, software engineering experience, and expertise in machine learning systems.

Senior Physicochemical Laboratory Technician will plan laboratory activities, manage human resources, and ensure accurate results. Requires a university degree in Chemistry, Biochemistry, Biology, or Biotechnology and at least 7 years of experience with GMP regulations and analytical methods. Experience managing a technical team in a laboratory is preferred.

Leads a team responsible for conducting customer due diligence, designing monitoring frameworks, and generating reports to ensure compliance with local and global standards. Manages projects, fosters team growth, and promotes the adoption of emerging technologies. Requires 5+ years of experience in a similar role, deep understanding of KYC-CDD regulations, and fluency in English and Spanish.

As a Product Specialist, you will ensure the smooth operation, continuous improvement, and value delivery of live IT products. You will support the Product Owner in backlog management, prioritization, and stakeholder communication. You will also identify opportunities for product optimization and ensure alignment with business needs.

Software Automation Engineer provides technical support for vision and automation systems, troubleshooting and repairing systems for serialization and packaging projects in the pharmaceutical industry.

Velto Renewables seeks an ESG & Communication Coordinator to develop and implement sustainability strategy, focusing on decarbonization, environmental stewardship, and governance. The role will lead ESG initiatives, coordinate internal compliance activities, and manage external consultants. Strong communication, analytical, and project management skills are required.

Embedded Software Engineer to develop C/C++ software for high-performance embedded environments. Implement concurrent programming, process optimization, and resource control. Integrate, debug, and test systems based on microcontrollers.

Graphic Designer needed for in-house agency at sports and entertainment holding company. Develop campaigns, brand proposals, and activations. Collaborate with creative team to bring ideas to life. Must have 5+ years experience in advertising, proficiency in Adobe Suite, and strong understanding of branding. Native Spanish and English required.

Senior AI Engineer to design and deploy AI-driven solutions. Experience in machine learning, generative AI, and cloud computing required. Develop intelligent systems for clients across industries.

Senior Legal Counsel will support commercial operations and strategic initiatives. Responsibilities include reviewing, drafting, and negotiating commercial agreements, providing legal training, leading strategic projects, and managing external counsel. Requires 8+ years of in-house legal experience, contract management expertise, and fluency in English and Spanish.

Experienced transport professional to lead and expand road and rail operations across Spain. Responsible for service delivery, operational efficiency, commercial growth, and team leadership. Requires 12+ years in land transportation, 7+ years leading teams, and fluency in Spanish and English.

Senior AI Engineer to design and deploy AI-driven solutions. Experience in machine learning, generative AI, and cloud computing required. Develop intelligent systems for clients across industries.