backend developer English-speaking jobs in Extremadura

Senior Application Engineer to design, develop, and maintain scalable cloud-based applications. Experience with Spring Boot, Java, Azure services, and REST API development required. Strong communication and collaboration skills essential.

AYES seeks an Engineer with experience in energy (Oil & Gas, industrial processes, infrastructures) for projects in process, piping, civil, or mechanical engineering. Requires a university degree in a relevant field, previous energy sector experience, native-level Chinese, and good English.

Reliability Engineer will study and develop technical upgrade projects, manage breakdown reports, and oversee preventive maintenance operations. The role requires a degree in Mechanical or Chemical Engineering, complementary training in Maintenance and Continuous Improvement, proficiency in English, and 3 years of experience in a similar industrial role.

Leads technical and analytical work on power system modeling, grid connection assessments, and strategic grid planning for renewable energy projects across Europe. Evaluates grid hosting capacity, connection feasibility, and system flexibility to support investment decisions. Monitors regulatory and technological developments and engages with industry stakeholders.

Provide first-line technical support to users globally. Diagnose and resolve issues with operating systems, applications, and devices. Manage incidents and service requests using a ticketing system.

Develop and implement optimization algorithms for route planning, inventory management, and supply chain scheduling in the animal feed sector.

Senior Software Engineer to develop and maintain backend systems using .NET Framework/Core. Requires strong SQL Server, ORM, and RabbitMQ experience. Must have advanced Spanish and English proficiency.

Solution Specialist will work with small and medium-sized companies, maximizing up-sell and cross-sell opportunities. Responsibilities include presenting cloud solutions, providing technical product overviews, and conducting trainings. Requires proficiency in Swedish and English, 3-6+ years of technology sales or business development experience, and a minimum Fundamentals certification.

Clinical Research Coordinator to support a clinical research site in Toledo. Part-time (20-24 hours/week) until September 30, 2026. Responsibilities include study documentation, patient support, data management, and communication. Bachelor's degree in life sciences or equivalent experience required.

Support Consultant to provide Level 2 and Level 3 support for digital transformation projects in the industrial sector. Responsibilities include log and database analysis, implementing workarounds, and contributing to technical documentation. Requires security clearance and fluency in English and Spanish.

Animator & VFX Artist to create 2D and 3D animations and real-time VFX in Unity for gameplay and UI. Collaborate with teams to ensure responsive and readable interactions.

The Communications Director will shape and lead Bioiberica's corporate communications strategy, overseeing both internal and external communications across three Business Units: Human Health, Animal Health, and Plant Health.

Design Engineer to execute the full design process from ideation to production. Responsibilities include drawing, updating, and maintaining designs, creating design and installation documentation, and ensuring designs meet manufacturing, technical, and customer requirements.

Service Support Engineer provides remote technical support for complex systems, troubleshooting hardware and software issues, and delivering technical training.

Lead renn's content strategy and act as the company spokesperson across social and public platforms. Define brand messaging, manage social media content, and ensure high-quality written content.

Support the management of framework contracts with International Organisations and European Institutions. Manage contracts end to end, coordinate with clients, consultants, and partners, and ensure contract execution, quality delivery, and compliance.

The Senior Financial Controller ensures the accuracy and strategic relevance of financial reporting. This role oversees month-end closing, complex financial analysis, and forecasting processes, providing insights to support decision-making and drive business growth.

Junior Sales Development Representative to identify, research, and prioritize potential partners for Springboard35. Generate outbound and inbound opportunities through multichannel prospecting and qualify leads. Work closely with Sales and Marketing teams to align messaging and conversion strategies. Track performance metrics and optimize processes based on data and results.

Experienced OT Security Engineer needed for global shopfloor security program. Implement and operate OT security controls, deploy security platforms, monitor alerts, and support incident response. Collaborate with SOC, OT, and engineering teams. Travel to manufacturing sites required.

Project Engineer to guide construction teams, provide training on photovoltaic bracket installation, and track debugging and troubleshooting. Requires 5+ years of experience in photovoltaic power station construction, installation, and technical support.