backend developer English-speaking jobs in Extremadura

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.

Commercial Transformation Manager will design and deploy new commercial capabilities across marketing, sales, and technology. This role partners with stakeholders to shape future operating models, processes, and tooling. The ideal candidate has experience in strategy consulting, bridging business and technology, and driving change in complex organizations.

Document Control Technician will support quality system management, facilitating document flow and audits. Responsibilities include document audits, training support, and non-conformity closure.

Toxicologist with a Ph.D. in Pharmacology and extensive experience in preclinical drug efficacy and toxicology studies (GLP and non-GLP). Must have a solid scientific background, familiarity with ICH/OECD guidelines, and expertise in study monitoring and toxicology report writing.

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.

Provide industrial customer service in English (90% of tasks) to international clients. Support with logistics, supply chain, import/export, and back-office processes.

Prepare ingredients, cook teppanyaki dishes, manage griddle temperature, and interact with diners. Must have demonstrable experience in teppanyaki service and excellent customer service skills.

Launch Specialist will manage and maintain launch plans for new products, coordinating cross-functional teams to ensure successful launches.

Mechanical Design Engineer to contribute to the design and development of mechanical systems, from concept to validation.

The International Association for Hydro-Environment Engineering and Research seeks a Communications and Marketing Manager to develop and implement communication strategies, lead marketing campaigns, and collaborate with internal teams.

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.

Drive revenue growth by managing the entire sales process for an AI-based expense and procurement management platform. Responsibilities include lead generation, pipeline management, sales presentations, and market monitoring. Fluency in German is required.

Technical Support Specialist providing phone and email support to retailers for a luxury automotive brand. Responsibilities include guiding retailers through software, managing orders, and coordinating hardware setup. Native or bilingual Dutch and advanced English required.

Senior Machine Learning Engineer to develop and productize LLM-based, agentic, and generative AI pipelines. Design scalable architectures integrating AI into Keysight's software and hardware platforms. Collaborate with domain experts to gather requirements and implement ML solutions for data augmentation, anomaly detection, modeling, and automation.

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.

Sales Representative to build the German market, reporting to the Sales Director. Responsibilities include contacting customers via phone, achieving sales targets, handling inquiries, and collaborating with teams. Requires at least 1 year of telesales experience, native/bilingual German, and intermediate Spanish.

Leads the Spanish sales team to drive revenue growth by partnering with agencies and direct clients. Manages a team of sales professionals and develops strategies for the Spanish market. Builds and deepens relationships with agencies and clients to deliver optimal value through trading agreements.

Computer Vision / Machine Learning Engineer to join R&D team focused on improving license plate recognition, vehicle detection, and parking occupancy systems. Develop, implement, and optimize deep learning models using Python. Must have strong Python programming skills, experience with machine learning models, and a software engineering background. Fluent Catalan and/or Spanish, with English at B2 level or higher.

Supports Marketing & Trade team in project development and brand management. Assists with daily operations, including performance monitoring, sell-in/sell-out analysis, and digital plan management. Collaborates with agencies and internal teams on marketing materials and customer support.

Senior Software Development Engineer to design, build, and maintain Java-based microservices in cloud environments. Collaborate with teams in an Agile setup.