backend developer English-speaking jobs in Castile-La Mancha

Accounts & Administrative Officer to support financial and administrative operations for a leading yacht service company in Mallorca. Responsibilities include accounts payable/receivable, invoicing, payroll support, and office management. Requires a Bachelor's degree, 2+ years' experience, strong bookkeeping knowledge, and fluency in English & Spanish.

Senior Risk Analyst will supervise and coordinate the payments and fraud operations team, analyze risks related to payment methods, identity verification, and gaming behavior, and propose process improvements. Requires 3-4 years of experience in risk, fraud, payments, or KYC roles, strong analytical skills, and fluency in Spanish and English.

Develops strategic plans, product roadmaps, and marketing plans for new and existing programs. Leads product launches, manages stakeholder relationships, and analyzes market trends.

As an HR Specialist for Bahia Principe Sublight Coral Playa, you will execute training, development, and selection processes. You will support hotel operations through HR excellence, coordinate with hotel management and the owning company on labor matters, and manage the full recruitment cycle for operational roles.

The Category Manager delivers best-in-class category leadership with customers to drive growth and engagement. The role leverages market, shopper, and customer insights to identify category growth opportunities and executes these through strategic category plans. The Category Manager collaborates with customers, sales teams, and internal stakeholders to achieve mutual, profitable, and sustainable category growth.

Software Development Engineer needed for contract role in Madrid, Spain. Diagnose and resolve defects, perform debugging, and create technical documentation. Experience with Java, cloud-native technologies (Docker, Kubernetes, microservices), and Agile Scrum is required.

The Laboratory Coordinator ensures the verification, control, and traceability of raw materials and products by coordinating analyses and guaranteeing compliance with quality standards.

Senior Sales Manager to lead new business development for pharma & healthcare clients. Must have proven pharma/healthcare and agency experience. Strong understanding of healthcare communications and client dynamics required. Fluent English, Spanish a plus.

Prepare and manage technical-economic proposals for atmospheric pollution solutions, primarily odour pollution. Coordinate with internal teams and maintain the proposal register.

Accounting and Reporting Controller needed for Finance and Administration team. Leads monthly and quarterly closing processes, drives ERP reporting implementation, and prepares financial statements. Requires a Bachelor's degree in a related field, 2+ years of audit experience, and strong knowledge of Spanish GAAP.

Senior Infrastructure Engineer to design and improve core infrastructure architecture across Azure, on-prem network, and security. Define standards, guardrails, and reusable patterns. Collaborate with internal teams and stakeholders to align technical decisions.

Leads AI projects, defining functional and technical requirements, managing timelines, and ensuring project success. Requires a Master's degree in Software or AI/Data Engineering with experience in software architecture, AI, and data science.

Experienced multi-site operator needed to lead end-to-end operational performance for a growing food brand in Spain. This senior role combines strategic leadership with practical execution, focusing on commercial performance, operational consistency, customer experience, talent development, and growth initiatives.

The Technical Consultant sets and maintains system integrations, including application to application integrations, services (WS), APIs, and file transfer. Responsibilities include participating in requirements analysis, design, testing, and documentation. The role also involves troubleshooting integrations and providing technical support to the application development team.

Deploy cutting-edge ML/LLM models to Fortune Global 500 clients. Employ automation tools to enhance ML/LLM processes. Establish monitoring systems to track model performance and address issues. Collaborate with Product, DevOps, and research teams to optimize model performance. Manage cloud infrastructure for Large Language Model workloads.

Associate, Business & Legal Affairs will provide legal advice and support Youplanet's business across projects. Responsibilities include drafting, reviewing, and negotiating agreements such as influencer, production, distribution, and brand partnership contracts. Must have professional-level English and Spanish fluency, a law degree, and 3+ years of entertainment law experience.

Senior Commercial Legal Counsel needed for 12-month maternity cover. Provides commercially focused legal advice and support on a range of issues to various functions, including Commercial Operations, Supply Chain, In-licensing, and Product Development. Responsibilities include negotiating, drafting, and supporting commercial contracts, advising on legal documents, and providing guidance on ad hoc legal issues.

Provides comprehensive administrative support to executives, including calendar management, meeting coordination, communication support, travel arrangements, and project assistance.

Product development and quality technician needed for a company focused on innovative food and pharmaceutical products. Requires a bachelor's degree in a relevant field and 1-3 years of experience in quality assurance or regulatory affairs. Fluent English is required, French is a plus. Strong analytical and communication skills are essential. Responsibilities include maintaining documentation, providing customer support, managing technical documentation, and ensuring compliance with regulations.

Drive business development and new revenue for a hospitality SaaS company in the DACH region. Own the full sales cycle, focusing on German-speaking hospitality customers. Fluency in German is required. Proven sales experience selling into hospitality businesses is essential.