javascript English-speaking jobs in Castile-La Mancha

JD&Co partners with a fast-growing B2B technology company seeking a Chief Operating Officer. This hands-on role supports the CEO and leadership team in executing strategy, improving commercial performance, and scaling operations. The ideal candidate has experience in B2B SaaS, software, fintech, fraud, KYC, AML, or regulated technology and a proven track record of scaling businesses.

Senior Digital Business Analyst to analyze digital performance, identify trends, and provide actionable recommendations for a leading industrial client.

Leads global network strategy, ensuring secure, efficient, and innovative network solutions. Manages network design, build, and operations, vendor management, and project governance. Organizes and optimizes teams across regions, overseeing infrastructure security, cloud networking, and application networking. Collaborates with senior IT leaders on network-related projects and acts as the key contact for Group Network services.

Junior Account Executive to support the English-speaking market in Spain. Responsibilities include business development, client onboarding, and marketing. Native or near-native English required.

Design, develop, and validate solar arrays for space applications. Responsibilities include requirement definition, 3D CAD design, electrical schematic development, component selection, and electrical analysis.

This role leads the delivery of high-voltage grid connection infrastructure for a data center project in Madrid. Responsibilities include managing contractors, ensuring EHS compliance, and coordinating with utilities. The HV Substation Construction Manager will oversee design, procurement, construction, commissioning, and energization of the substation, ensuring it meets data center energization requirements.

Vice President (VP2 level) to join the Business Services M&A team, executing end-to-end transactions across Europe. 7+ years of M&A Investment Banking experience with a strong track record in mid-market transactions, ideally within Business Services.

EBRO SUV seeks a Key Account Manager to drive B2B growth by developing and managing relationships with corporate clients, institutions, and large fleets. This role requires a strong commercial mindset, negotiation skills, and the ability to manage complex sales cycles.

Lead the strategy and roadmap for Enso's end-to-end tech platform, including design, data analysis, and stakeholder coordination. Requires 5+ years in digital product, full-stack design skills (Figma), and advanced AI usage. Fluent English, good Spanish, and Barcelona-based or willing to relocate.

Electrical Engineer with a technical background needed to lead the expansion of Smart Grid solutions. Develop commercial strategies, identify business opportunities, and provide technical advice to clients in the electric utility sector.

The Billing & Sales Specialist ensures accurate billing of services sold and traceability across the commercial lifecycle. This role deploys and improves the Billing Industrial Model, aligning it with Cellnex's commercial strategy and business applications. The position focuses on standardization, automation, and efficiency within the commercial process, particularly for MNO contracts and complex telecom service billing models.

B2B Marketing Project Manager to run end-to-end projects for leading technology clients. Manage client relationships, understand business needs, and contribute to strategic solutions. Experience in financial project management, B2B marketing, and client consultation required.

Social Media Trainee to support the Marketing Department's communication team in Madrid. Assist with content creation, scheduling, community management, and influencer outreach.

Senior Project Manager to oversee the construction of a new cleanroom environment, technical infrastructure, and office facilities. Responsibilities include managing project planning, budget, and scope, coordinating contractors, and ensuring compliance with quality and safety standards. Requires a degree in a relevant field and proven experience managing technical facility construction projects.

IT Application Maintenance Specialist will ensure stability and continuous improvement of business-critical applications. Responsibilities include managing application support, coordinating with external partners, monitoring incidents, and acting as a liaison between business users and IT teams. Experience supporting planning, operations, or supply chain applications is required.

Supports daily execution of customer orders, supplier coordination, logistics processes, inventory management, and documentation control. Requires strong administrative skills, attention to detail, and ability to work effectively in a fast-paced international environment.

Customer Operations Specialist to support French-speaking customers. Manages orders, handles inquiries, and ensures customer satisfaction. Requires 3+ years of experience in customer service, sales support, or a related field. Fluent English and proficiency in Microsoft Office and ERP systems are essential.

Conceptualize, produce, and edit audiovisual content for digital campaigns and social media. Create engaging organic content for platforms like Instagram. Collaborate with the Head of Social Media to develop innovative content concepts. Ensure all content aligns with SHA's visual identity and brand positioning.

Experienced Steam and Gas Turbine Mechanics needed for national and international power generation projects. Responsibilities include major overhauls, inspections, maintenance, and on-site troubleshooting. Requires proven experience, technical documentation comprehension, and travel flexibility.

Develop and create beautiful software and mobile apps for Southeast Asian markets, collaborating with design and production departments.