backend developer English-speaking jobs in Castile-La Mancha

Commercial Director to lead sales, business development, and commercial strategy for a space logistics company. Requires 5-7+ years of experience in technical sales within defense, aerospace, or deeptech sectors. Proven track record of building and scaling sales processes, generating revenue, and meeting commercial targets. Expertise in ESA and EC tenders and programs. Fluent in English.

Identify project risks, for different project risks, specify corresponding emergency measures and preventive measures, lead the project team to hold regular project meetings and establish a risk escalation system 3. Monitor project progress; grasp the key points of the project, determine the monitoring frequency, handle emergencies 4.

The Customer Account Manager is responsible for acquiring new battery/electrolyte customers and managing the commercial relationship as the primary customer contact.

Service Engineer for Mobile Cranes provides on-site and remote technical support, performing commissioning, maintenance, and repair of crane equipment.

HSE Manager Velto Renewables (Velto), a subsidiary of La Caisse (Caisse de dépôt et placement du Québec), is looking for an HSE Manager (Health & Safety and Environment) to join its team in Madrid, Spain, and work closely with the CEO and the Senior Management Team. Velto Renewables is a renewable energy independent power producer with a long-term asset ownership strategy.

Position: Scientific Labeler & LaTeX Specialist Job Type: Freelance, Fully Remote Job Summary: Thoth AI is seeking detail-driven, STEM-literate individuals to train vision-language models (VLMs) to understand and process complex scientific content.

AI Software Engineer to build and operate AI-driven features using NodeJS/TypeScript on AWS. Develop LLM workflows, AI agents, and orchestration systems. 5+ years of experience building scalable systems and strong knowledge of LLMs and AI architectures required.

Senior .NET Developer to join an international team designing and building scalable software solutions. Requires Bachelor's degree in Computer Science, proven experience as a Senior .NET Developer, strong knowledge of .NET framework and C#, and experience with ASP.NET MVC, ASP.NET Core, HTML, CSS, JavaScript, relational databases, RESTful APIs, Git, and containerization technologies.

Guesty is the all-in-one platform helping hospitality businesses around the world automate, optimize, and scale their operations. We're a fast-growing global startup that's transforming how the industry works — from guest experience to business growth. With a powerful suite of features and integrations with 150+ industry partners — including Airbnb, Vrbo, Booking.

Roles and responsibilities: Inspiring & supporting the Lean deployment by training people & obtaining quick wins. Ensuring the Lean operational processes and procedures meet local regulations. Monitoring the Lean performance of the areas/sites/lines under her/his responsibility.

Executes quality assurance and testing for new casino game launches and platform updates. Coordinates deployments, monitors live operations, and analyzes game performance. Supports operational planning, reporting, and stakeholder communication.

Leads a team of business recruiters, delivering hiring objectives for various functions. Manages relationships with stakeholders, develops team members, and implements best practices to improve recruitment processes.

Technip Energies is a leading engineering and technology company for the energy transition, with leadership positions in LNG, hydrogen, and ethylene, as well as growing market positions in blue and green hydrogen, sustainable chemistry, and CO2 management. The company benefits from its robust project execution model, backed by a broad offering of technologies, products, and services.

This individual contributor role supports 3PL fulfillment centers, ensuring they meet performance standards. Responsibilities include training, troubleshooting, and fostering adoption of ShipBob's dashboard and services. The Operations Support Manager will build relationships with partners, address operational issues, and drive continuous improvement initiatives.

At Bryden Wood, we are expanding our teams in Barcelona and Madrid to work on large scale projects for the biggest names in "Big Tech" and the Industrial sector. We are looking for a Senior/Principal Electrical Engineer to lead the technical delivery of our Data Centre and large-scale industrial projects.

Experienced Regulatory Affairs Manager needed to manage marketing authorization applications, liaise with Health Authorities, and coordinate product launches. Requires 5+ years in the pharmaceutical industry, fluency in English, and a scientific degree.

FINERGE seeks a Back Office and Operations Control Specialist to analyze and improve wholesale electricity market participation strategies. The role involves revenue stream control, development of analytical tools, sales settlement calculation, and monitoring of legal regulations and market rules.

EPCM Project Engineer for logistics and industrial projects. Manages projects from feasibility to handover, including scope, budgets, procurement, and construction. Requires a Bachelor's or Master's degree in Civil or Industrial Engineering and 6-10 years of experience, with at least 4 years in logistics projects.

IT Support Specialist provides technical support, manages systems administration, and maintains infrastructure for the Spain office. Requires 2-4 years of experience in corporate IT support, knowledge of Windows 10/11, Microsoft 365, and Active Directory, and fluency in Spanish and English.

Senior Data Engineer to design, build, and maintain scalable data platforms for a leading financial services client in Madrid. Requires strong Python skills, experience with data pipelines, and a background in data warehousing.