frontend developer English-speaking jobs in León

PLC Programmer needed for multinational warehouse automation leader based in Barcelona. Develop, test, and implement PLC programs using Siemens TIA Portal. Design HMI screens and SCADA systems. Lead equipment setup, calibration, and commissioning at client sites across Europe. Provide on-site support and troubleshoot PLC-related issues.

COMSER seeks a Qualification and Validation Technician to design, develop, and execute validation protocols for pharmaceutical equipment and processes. Must have a scientific-technical university education and full professional level English.

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

Lead the software testing strategy for mission-critical payload and embedded software, ensuring reliability and operational success. Define, develop, and execute testing methodologies, build automated testing frameworks, and lead a team of software validation engineers.

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.

Senior User Acquisition Manager to scale paid growth across Google Ads and Meta Ads, engineer conversion signals, and expand into new channels.

Manages and optimizes purchasing activities for HVAC products, ensuring efficient supply, cost competitiveness, and quality. Negotiates with suppliers, monitors market trends, and controls inventory. Requires a Bachelor's degree, experience in procurement, fluency in Spanish and English, and advanced Excel skills.

Provides service, maintenance, troubleshooting, and commissioning of Leica Biosystems laboratory instruments, including network configuration and Digital Pathology equipment. Onsite support with occasional EU support.

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.

Support the execution of marketing activities across international markets. Create, adapt, and update content for various platforms. Assist with social media management, content creation, and documentation.

Senior Data Scientist/AI Engineer specializing in AI Safety to lead adversarial testing, risk assessment, and safety evaluations for LLM- and agent-powered chatbot systems. Focus on ensuring AI technologies are safe, reliable, and aligned with business and user needs.

Payroll Subject Matter Expert needed for a well-established international organization. Oversee payroll processing, ensure compliance with Spanish labor law, and manage relationships with external payroll providers.

CMC Regulatory Specialist provides expert guidance and support for biological products. Responsibilities include planning regulatory strategies, evaluating change controls, reviewing study reports, and coordinating submission preparation. Requires strong understanding of CMC and post-approval regulatory requirements, experience writing CMC sections for regulatory documents, and proficiency in English and a local language.

Junior Graphic Web Designer will support brand consistency across all channels. Responsibilities include creating website, presentation, and marketing assets, updating the website, and ensuring visual consistency.

Sales Manager to define and execute commercial strategy for the Business Unit. Provide technical and commercial guidance to the sales team. Monitor competitor activities and market trends.

Global Enterprise Partners seeks a Spanish and English speaking SAC Planning Consultant with 5+ years of experience in SAP Analytics Cloud and BPC. Must have experience with planning and consolidation tools, FP&A processes, and data warehousing concepts.

CX Researcher will enable customer-centric evidence in international digital environments. They will plan and coordinate research, leverage team outcomes, synthesize and guide insights, and facilitate alignment.

Experienced real estate agents in Alicante or the Costa Blanca seeking autonomy and growth within a global brand are invited to explore this opportunity.

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.

This fixed-term contract role seeks a driven Sales Development Representative to identify, onboard, and grow high-potential sellers on TikTok Shop. Responsibilities include prospecting, qualifying, and onboarding sellers, collaborating with cross-functional teams, and exceeding acquisition and GMV growth targets. Proven B2B sales experience, exceptional communication skills in English and Spanish, and a commitment to a 6-12 month contract are required.