frontend developer English-speaking jobs in León

Experienced Application Security Consultant needed for long-term contract. Focus on WAF, Layer 7 security, and application performance in large enterprise environments. Requires 5+ years in customer-facing roles with strong networking and WAF experience.

Network & Infrastructure Engineer needed to manage network infrastructure, virtual environments, and server systems. Responsibilities include network device configuration, VMware platform support, server maintenance, and security monitoring. Requires strong understanding of network protocols, virtualization tools, and server technologies.

Executive/Personal Assistant to provide high-touch support blending business operations and lifestyle management for PACO Services in Madrid.

Senior Commercial Finance Manager will lead the development and execution of pricing and Revenue Growth Management strategies to drive sustainable revenue growth and profitability across the Iberia cluster. Responsibilities include leading a team, developing financial forecasts, and providing insights to support strategic decision-making.

Technical Engineering Director will drive end-to-end customer project delivery, transform client needs into innovation, and build a high-performance team. Requires a Master's or PhD in a STEM field, 3+ years of applied machine learning experience, 2+ years of project management experience, and demonstrated team management skills.

Solutions Architect needed for complex, large-scale IT projects. Requires senior experience in solution architecture, cloud platforms (AWS, Azure), integration architectures, and API paradigms. Must have strong communication and documentation skills.

Oversees the architecture, administration, maintenance, and optimization of enterprise applications, including Salesforce and Manhattan. Leads and develops a team, ensuring system stability, security, and scalability. Defines and enforces best practices for system administration.

Nextmol seeks an HPC Sysadmin to manage and evolve on-premise HPC clusters. Requires 4+ years of experience with hardware lifecycle, networking, high availability, monitoring, and performance optimization. Strong expertise in Slurm administration and tuning, distributed storage, and automation tools. Expert Linux system administration skills and strong collaboration skills are essential.

Clinical Evaluation Specialist will develop and write Clinical Evaluation Reports (CERs) and Clinical Evaluation Plans (CEPs) in accordance with EU MDR 2017/745. Responsibilities include conducting literature reviews, preparing Literature Search Reports, and critically appraising clinical evidence. The role requires a scientific or medical background and a minimum of 3 years of experience in clinical evaluation of medical devices.

This role focuses on the continuous improvement, validation, and optimization of power electronics products. The R&D Product Enhancement Engineer will design, improve, and optimize power electronics systems, perform product enhancement activities, and support validation activities.

Medical Doctor needed for home care visits for patients with Phenylketonuria (PKU) in Santiago de Compostela. Provide medical support during scheduled visits as part of a long-term follow-up program until December 2026.

Senior UHT Specialist needed for a leading nutraceutical manufacturer. Develop, optimize, and industrialize specialized nutrition products using UHT and thermal processing technologies. Provide technical expertise and support across R&D, manufacturing, and commercial teams.

Change Lead will translate global change strategies into local execution, ensuring business readiness for new ways of working. Responsibilities include leading local communications, stakeholder engagement, training, and monitoring change progress.

Postdoctoral Researcher to conduct finite element simulations of thermal segments in an energy storage system. Validate simulations through laboratory work and collaborate with manufacturers and research institutions. Produce reports and scientific articles. PhD in a relevant field and experience with finite element simulations required.

Marketing Content Specialist will create on-brand visual and written content for Paid Social, CRM, and Paid Search campaigns. Responsibilities include developing creative assets, writing copy, and collaborating with channel leads. Requires 3+ years of content creation experience, strong design skills, and proficiency in tools like Figma and Adobe Creative Suite.

Service Support Engineer providing remote technical support for complex systems in the EMEAI region. Troubleshooting hardware and software issues, managing service tasks, and delivering technical training.

Beast, a high-end Asian restaurant, seeks experienced waiters/front of house staff for its Marbella location. Fluent English is required, Spanish is a plus. Must be confident, friendly, and comfortable serving a high-end clientele in a fast-paced environment.

This permanent, hybrid role requires proven B2B SaaS sales experience (minimum 6 months) and fluency in Polish (C2) and English (B2). The Account Executive will drive the full sales cycle, from prospecting to closing, and develop tailored sales strategies.

Project Management Officer with expertise in engines and mechanical components needed for international projects. Responsibilities include maintaining project databases, monitoring costs and quotations, tracking milestones, and reporting on project progress. Requires fluency in English, good French, and experience in automotive project phases and cost control.

SAP MDG/MDM Architect needed for a global S/4HANA transformation program. Define and elevate data governance strategy, focusing on frameworks, operating models, and roadmaps. 10+ years of experience in SAP MDG/MDM with strong architectural and governance expertise required.