backend developer English-speaking jobs in Castile-La Mancha

Fullstack Engineer to build and integrate end-to-end systems, design product features, and enforce web developer best practices. Requires +4 years of experience with React, Typescript, and Next.js.

Freelance remote project assessing online advertisements for relevance, language, and cultural appropriateness. Must be fluent in English and Catalan, a resident of Spain for the past 3 years, and have access to a computer, smartphone, and internet connection.

The Biorepository Technician will maintain, develop, and implement protocols within the Biorepository team. Responsibilities include sample reception, quality control, aliquot preparation, data management, and documentation. Requires at least 3 years of experience in molecular biology laboratory techniques, including DNA/RNA extraction, quality control, and quantification. Experience with LIMS databases and liquid handling robots is preferred.

The Senior HR Manager provides human resources leadership and support for multiple countries, including organizational development, employee relations, recruiting, compensation, benefits, performance management, training, and safety. The role requires developing and implementing HR programs and policies, aligning with global mandates, and collaborating with stakeholders to bridge operational gaps. The Senior HR Manager will also analyze data, provide training, and ensure compliance with local labor laws and company policies.

MarketStar seeks an experienced Category Alliances Program Manager to execute global Alliance-sponsored programs for HP's PS Consumer business. This role ensures seamless program activation across markets, collaborating with Alliance teams, Category, Marketing, and HP Stores stakeholders. Responsibilities include program planning, performance tracking, market readiness activities, and stakeholder alignment.

Project Manager - API Design needed for international team. 5-7 years of experience managing API-driven projects in Banking required. Proven API design experience, including contracts, versioning, and governance. Strong analytical skills and experience with Agile methodologies. Fluent Spanish and English required.

Human Resources Intern to support labor relations, recruitment, onboarding, employee records, engagement, and HR projects. Must have a degree in a related field and fluency in Spanish. English fluency is a plus.

Project Documentation Intern will assist in organizing, classifying, and archiving project documentation. Responsibilities include maintaining document registers, coordinating with project engineers, and supporting documentation packages for audits.

Provides on-site technical support for desktop and laptop systems, including troubleshooting hardware, software, and connectivity issues. Manages the full lifecycle of desktop devices and delivers support using tools such as SCCM, Intune, and ServiceNow. Ensures compliance with security protocols and offers VIP support during critical escalations.

Sales Engineer to identify and develop business opportunities for automation solutions in complex industrial environments. Requires technical expertise, strong commercial acumen, and experience managing international projects.

SAP EWM Consultant needed for a contract role in Madrid, Spain. Requires 3+ years of hands-on experience in EWM warehouse support or projects. Must have experience integrating EWM with automated systems and other SAP modules. Strong knowledge of IM, EWM, and GXP/SOX requirements is essential.

Leads technical application support, oversees day-to-day operations, and drives maintenance, enhancement, and development of the OneStream solution.

Doofinder seeks a Business Development Manager to drive business growth in the Polish market. This role involves identifying and prospecting clients, managing the full sales cycle, and exceeding revenue targets. The ideal candidate has 1-2 years of B2B sales experience, a proven track record of closing deals, and strong communication and negotiation skills. Native Polish with fluent English or Spanish is required.

Performance Engineer to conduct performance, load, and stress tests on web applications. Analyze frontend performance and identify bottlenecks. Collaborate with developers and stakeholders to integrate performance testing into CI/CD pipelines.

Senior Python Developer to design, implement, and optimize platform applications. Requires 4+ years of Python experience in production environments, including frameworks like Django, Flask, or FastAPI.

Provides legal counsel and support for a variety of business operations, including contract drafting, negotiation, and review. Manages external legal counsel and provides legal analysis on dispute resolution and compliance matters.

Design and certify datalink and interface architectures for UAV/eVTOL platforms, ensuring compliance with ARP4754A/B, ARP4761, DO-178C, DO-254, and DO-160. Define avionics data architecture and interface control documents across various links. Lead certification activities and safety analyses.

The Biorepository Technician will maintain, develop, and implement protocols within the Biorepository team. Responsibilities include sample reception, quality control, aliquot preparation, and data management. The candidate will work closely with the Biorepository Manager, team members, and the Head of the Sequencing Unit.

Oversees and optimizes HR data reporting and IT project management within the People Department, ensuring data accuracy, user functionality, and actionable insights. Leads IT system integrations and upgrades, manages system updates, and coordinates with vendors. Provides financial planning and oversight for HR IT projects.

Lead and coordinate multi-disciplinary engineering teams across battery systems, electric propulsion, mechanical, electrical, and systems domains. Drive hands-on development, prototyping, and early-stage industrialization. Translate strategic objectives into executable engineering plans.