backend developer English-speaking jobs in Castile-La Mancha

Supervises a team of Service Center Agents and Training Administrators, ensuring training consultancy delivery according to procedures. Manages workload, provides customer service through email, and escalates queries. Monitors quality, KPIs, and documentation. Leads team development, knowledge retention, and onboarding.

Product Marketing Manager to support and coordinate marketing operations. Will manage campaigns, content creation, and international partner relations. Requires 3+ years of marketing experience, B2B knowledge, and fluency in English and Spanish.

This role involves the installation, maintenance, and repair of marine air conditioning and refrigeration systems for the superyacht industry. Responsibilities include performing complex services, troubleshooting malfunctions, and managing part orders. Applicants should have a technical degree/diploma/certification and F gas (Gases Fluorados) certification.

Administrative Assistant Trainee to support operational and compliance tasks for a pharmaceutical client. Assist with project management, digital tools, and internal systems.

Junior Brand Manager supports the management and development of assigned brands, ensuring continuity and growth of marketing strategies. Responsibilities include brand activation planning, 360º campaign development and execution, performance tracking, and cross-functional coordination. Requires a degree in Marketing/Brand Management or Economics, 2-3 years of experience in a fast-paced environment, strong consumer mindset, and excellent communication skills.

Leads regional talent strategy and implementation, including talent acquisition, learning and development, and talent management programs. Manages budget, ensures stakeholder alignment, and partners with HR Business Partners to meet business goals.

Senior Data Scientist/AI Engineer to lead adversarial testing, risk assessment, and safety evaluations for LLM- and agent-powered chatbot systems. Focus on ensuring AI technologies are safe, reliable, and aligned with business and user needs. Collaborate with product, engineering, and business stakeholders to identify safety requirements, conduct assessments, and develop mitigation strategies.

Designs solutions for strategic clients, collaborating with commercial, product, engineering, legal, and operations teams. Leads RFP management and ensures deliverables are met. Requires a bachelor's degree and 5+ years of experience in finance or internet-related industries. Must understand a major programming language and RESTful APIs. Fluent Mandarin/English communication skills are required.

The Rooms Division Manager supervises the front and back operations of the reception, maintenance, and housekeeping departments. Ensures guest satisfaction and a warm, welcoming environment. Manages Front Desk and Reservations operations, including room allocations, guest relations, and revenue strategies. Oversees the Front Desk team, including training, scheduling, and performance management. Performs back-office tasks such as reviewing reports, processing charges, and managing invoices. Supervises Housekeeping and Maintenance operations, ensuring quality standards and efficient service. Requires a hospitality management background, 3+ years of experience, proficiency in reservation software, and bilingual English/Spanish skills.

Senior Consultant & Market Researcher with 5+ years experience in consultancy, marketing, market research, or innovation. Expertise in User and Market Research, especially within Healthcare. Strong analytical, communication, and leadership skills. Fluent in Spanish, English, and conversational Catalan.

Develops and deploys state-of-the-art ML/AI models and imaging technologies for crop science research and development. Uses advanced analytical models, machine learning, and AI algorithms to deliver insights and solutions. Leads imaging-based projects, designs experiments, and communicates project milestones and insights.

Nae seeks a Sr Consultant Data Centers to lead the development of a new Business Consulting practice focused on the Data Center industry. The role combines strategic vision, commercial exposure, and project delivery, with a mandate to build capabilities, support go-to-market activities, and ensure high-quality execution.

Full Stack Developer will design, implement, and maintain web applications using React, TypeScript, Python, Django, and PostgreSQL. Responsibilities include frontend development, backend development, AI-driven development, and cloud infrastructure management. Must have 3+ years of experience in full stack development with production-ready applications.

Full Stack AI Software Engineer to design, build, and scale an enterprise AI platform used by 5,000+ users. Requires 4+ years of experience in software engineering with strong expertise in React, Node.js, and Python. Experience with REST APIs, MongoDB, and relational databases is essential.

French-speaking Account Executives are needed to drive business growth in the Swiss market. This role involves full sales cycle ownership, from prospecting to closing, and building long-term customer relationships. Proven B2B sales experience, fluency in French and English, and Swiss market knowledge are required.

Experienced claims professional needed for international claims operation. Processes U.S. and international healthcare claims, resolves complex cases, and supports process improvements. Senior roles may include team leadership.

Experienced EASA Part-66 B1.2 Licensed Engineer needed for aircraft maintenance and repair. Responsibilities include ensuring aircraft airworthiness, performing maintenance tasks, and collaborating with technical teams and suppliers. Must have EASA Part 66 B1.2 License, Human Factors training, and over three years of aviation experience.

Drive and coordinate strategic initiatives for TeamSystem Spain, including market segmentation, acquisitions, and product launches. Develop analyses, dashboards, and presentations to monitor performance and identify growth opportunities. Support M&A processes and integration of acquired companies.

Biostatistician/Senior Biostatistician needed for a leading international pharmaceutical company. Develop and review protocols, statistical analysis plans, study reports, and publication materials. Present data to internal teams and regulatory bodies. PhD (3+ years) or MS (5+ years) in Biostatistics, Statistics, or related field required. Proven experience in the pharmaceutical industry or CRO environment. Strong proficiency in SAS, R, or Python.

Provide payroll and personnel administration support to clients. Ensure accurate payroll calculations and client guidance on payroll and social legislation. Maintain client relationships and answer employee inquiries.