backend developer English-speaking jobs in Castile-La Mancha

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.

Full Stack Developer will own and develop the API Developer Portal using React, Next.js & TypeScript. Responsibilities include designing testing environments, delivering SDK generation and monetization integrations, and implementing conversational developer support.

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.

Legal Assistant to support international legal team managing subrogation cases. Responsibilities include drafting legal documents, coordinating with clients and insurers, and providing administrative support. Requires fluency in English and Spanish.

ML/AI Engineer to develop, deploy, and maintain AI and Machine Learning solutions in production environments. Will collaborate with Data, DevOps, and Platform teams, following MLOps practices. Requires 3+ years of experience developing ML/AI solutions, strong Python skills, and experience with frameworks like TensorFlow or PyTorch.

Drive commercial growth by developing existing clients and opening new business opportunities for a sustainable product company. Manage B2B, retail, and key accounts, identify new markets, and negotiate agreements.

QA Technician to ensure R&D activities comply with internal SOPs, GMP, and EMEA/FDA legislation. Responsibilities include reviewing and approving documents, performing audits, and collaborating with QA-R&D on client audits and Health Authority inspections. Requires a degree in Health Sciences, fluency in Spanish and English, and 2+ years of Quality Assurance experience.

Support SAP ERP Solutions in Europe, providing functional support and managing system issues. Configure SAP components, including master data, document types, and order processing. Collaborate with teams on projects and system developments.

Senior Data Analyst will support P&P Manager by delivering business insights through analysis and reporting. Requires 2-3 years of daily SQL experience, data modeling, and proficiency with Tableau and Salesforce.

TRE ALTAMIRA seeks a Business Development Manager to expand its presence in the French market. The role involves managing client relationships, identifying new business opportunities, and contributing to strategic sales decisions. Native French and fluency in English are required.

Korean Air seeks a Cargo Traffic Agent for a one-year contract at Madrid Airport. The role involves managing daily cargo operations, handling irregularities, and supervising documentation and loading/unloading processes. Must be legally authorized to work in Spain and possess a bachelor's degree and fluency in English and Spanish.

Acercanza Consulting seeks two Senior Scrum Masters to support multiple Tech & Engineering squads within Receivables Finance at a Tier 1 Bank. Roles are based in Madrid and Málaga and require experience as a Scrum Master supporting multiple technology teams, a strong background in Global Transaction Banking, and Working Capital / Receivables Finance knowledge.

Data Engineer needed to design, build, and maintain large-scale data systems. Requires experience with data warehousing, ETL tools (DBT mandatory), cloud environments (AWS or Azure), Apache Airflow, and Python development. Must have strong SQL skills and experience with BI tools.

Drive new business sales for a leading SaaS/DevOps company in EMEA. Manage the full sales cycle, from identification to closing, for technical customers.

Regional Sales Representative needed to drive sales growth in Spain. This role requires 3+ years of sales experience, ideally in electro-mechanical components or high-value electronic connectors. The successful candidate will manage a multi-site territory, develop new accounts, and build strong customer relationships. Regular travel across Spain is required.

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.

The Programme & Content Manager leads the planning, coordination, and delivery of WTTC's written and narrative content, ensuring clarity, consistency, and strategic alignment. The role involves managing complex content workflows, collaborating with senior stakeholders, and delivering high-quality outputs such as speeches, reports, and thought leadership materials.

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.

Automotive Supply Chain & Packaging Engineer needed for Tier 1 automotive company in Barcelona. Define and optimize supply chain organization, ensuring service, quality, and safety while minimizing costs. Develop packaging specifications and ensure fine-tuning and reception of packaging means.

Senior Consultant to assess and validate valuation models within the Numerix library, ensuring compliance with regulatory standards (FRTB, FVA/AVA).