backend developer English-speaking jobs in Castile-La Mancha

Coonerang, a growing education group, seeks an Academic Director to build and operationalize a robust pedagogical model. Responsibilities include designing teacher training, establishing an academic quality audit system, and ensuring student success. The ideal candidate is an experienced teacher with a passion for improving teaching practices and a proven track record of developing and implementing academic systems.

Painting / Coating Supervisor needed for a major energy yard project in Tarragona, Spain. Supervisory experience in industrial painting, protective coatings, and corrosion protection required. Strong understanding of QA/QC and HSE standards.

Leads and develops a team of Data Operators within Helvetia Baloise Asset Management, ensuring high-quality, reliable data delivery across key domains. Oversees data management processes, acts as a central coordination point between stakeholders, and drives data-driven decision-making.

Credit Controller will manage customer collections across international markets, ensuring timely cash collection and maintaining strong customer relationships. Responsibilities include monitoring payments, resolving declined transactions, and proactively following up on overdue invoices.

The Consultant will analyze business requirements, develop strategies, and guide decision-making to optimize performance. Tasks include conducting assessments, collaborating with teams, generating reports, and presenting recommendations.

Design, develop, and optimize machine learning models for object detection, segmentation, and classification. Research, implement, and enhance computer vision and numerical algorithms. Build computer vision software systems and analyze data to monitor and evaluate performance.

Lead Cybersecurity and Compliance projects ensuring organizations meet security regulations and standards. Manage risk analysis, security policy development, and project management focused on information protection.

Follows up on website requests, pre-qualifies leads, and develops nurturing initiatives to convert them into sales opportunities. Supports sales team with market development and account-based marketing strategies. Executes telemarketing initiatives and researches new accounts and contacts.

Senior Data Analyst will analyze game play data to inform product development, marketing strategies, and live operations. Responsibilities include extracting insights, optimizing marketing spend, building dashboards, and collaborating with cross-functional teams. Requires 4+ years of analytical experience, expertise in SQL and BI tools, and strong communication skills.

The Product & Site Coordinator bridges product strategy and on-site execution for casino games, promotions, and content. This role manages provider relationships, coordinates launches and promotions, and optimizes product display.

Steel Structure Design Engineer to join Power & Industrial business. Experience in Power Plants industry required. Performs technical calculations, prepares drawings, and checks shop drawings. Must have 10+ years experience in Power Plant Projects (design and calculation). Excellent command of Spanish and English. Proficient in StaadPro and Idea Connection.

Business Systems Analyst with Genesys CCaaS expertise to support contact center platform migration, stabilization, and optimization. Will translate business requirements into scalable Genesys Cloud solutions and ensure adherence to enterprise standards.

Mabxience seeks a Data Engineer to design, develop, and maintain data pipelines and ETL processes. The role involves extracting, transforming, and integrating data from diverse sources, ensuring data quality and availability for analysis. Responsibilities include automating data workflows, developing data models, and troubleshooting data issues.

Lead Product Designer to own the AirHelp mobile app's design, from problem definition to shipped outcomes. You will drive product strategy, translate validated ideas into production-ready design, and raise the bar for design through systems thinking and mentoring.

The Association Manager supports the Officers and Council, managing secretariat activities, operations, and stakeholder communication. Responsibilities include meeting coordination, executive support, project management, communications, financial coordination, membership management, and stakeholder engagement.

Hotel Booking Agent needed for Travelodge. Manage inbound calls for reservations, amendments, and cancellations. Convert inquiries into bookings using a sales-driven approach. Fluency in English and Spanish required.

Senior DevOps & Backend Engineer to build and run modern, scalable platforms on AWS. Design, build, and maintain cloud native infrastructure, develop Node.js backend services and APIs, and build CI/CD pipelines. Embed DevOps practices across teams to improve delivery speed and quality.

Estimating Engineer for utility-scale PV and BESS projects. Prepares EPC cost estimates, develops CAPEX breakdowns, and coordinates with engineering, procurement, and construction teams. Requires 3+ years of experience in EPC estimating for utility-scale PV projects (≥50 MW) and experience with BESS projects is highly desirable.

Atelier Madre seeks a detail-oriented artisan to craft leather bags and assist customers in our Barcelona store. Must be trustworthy, efficient, and have a passion for quality craftsmanship.

Senior Mobile AI-First Engineer will build next-generation mobile applications for restoration professionals. Responsibilities include Kotlin Multiplatform/Compose Multiplatform development, native iOS/Android development, and cross-functional collaboration. Requires 7+ years of experience shipping Android/KMP applications, expertise in Jetpack Compose/Compose Multiplatform, and experience using AI tools like Cursor, Claude Code, or Copilot.