backend developer English-speaking jobs in Castile-La Mancha

Human Resources Intern to support HR operations, including recruitment, onboarding, administration, and employee engagement. Provides operational and administrative support across the employee lifecycle.

Procurement Specialist supports, develops, and executes procurement plans in alignment with operational needs. Manages supplier relationships, tenders, contract negotiations, and price analysis to optimize costs and mitigate risks. Leads or supports the rollout of local and global procurement strategies and projects.

HSE Design Specialist needed for a global EPC company. 5+ years experience in a similar role required. Responsibilities include hazard identification, risk mitigation, and ensuring design compliance with standards and regulations. Strong English (C1 level) required.

Experienced Beach Manager needed for COYA Ibiza. Minimum 3 years' experience in luxury beach club management required. Must have strong interpersonal, communication, and problem-solving skills. Fluency in Spanish and English is essential.

Support investor relations and corporate development initiatives at HBX Group. Analyze financial performance, conduct market research, and prepare presentations for internal and external stakeholders.

As a Test Development Engineer, you will design, develop, and implement Automated Test Equipment (ATE) and test programs to ensure product quality. You will specialize in either hardware or software, focusing on test architecture, development, and integration. Responsibilities include solution architecture, end-to-end development, strategic planning, debugging, and technical representation.

Process Engineer needed for a 6-month project in Bilbao, Spain. Must have experience in water treatment and wastewater treatment plant projects, including design, commissioning, and start-up. Requires a degree in Mechanical, Environmental, or Chemical Engineering and proficiency in Spanish and English.

Experienced Area Manager needed to drive commercial growth in the European Textile & Flat Lamination markets. Develop sales plans, manage commercial portfolios, and build customer relationships. Requires 5-10 years of experience in the industry, strong analytical skills, and fluency in English.

Growth Marketing Manager will own end-to-end growth strategy, execution, and optimization across paid, organic, lifecycle, and partnerships. Responsibilities include defining and executing growth strategy, managing acquisition channels, designing and running experiments, and collaborating with product and data teams.

Lead the delivery of mobile applications for premium brands, combining iOS expertise with end-to-end ownership, team leadership, and technical execution. Define architecture, manage the mobile roadmap, and partner with cross-functional stakeholders.

Experienced Regulatory Affairs Manager needed to define and execute regulatory strategies, manage documentation, and ensure compliance across the product lifecycle.

Data Scientist needed to analyze large datasets, develop machine learning models for ad targeting and campaign performance, and collaborate with teams to improve advertising impact. Requires 5+ years of data science experience, 3+ years in AdTech, and proficiency in Python, SQL, and ML frameworks.

The Customer Administration Specialist (Billing) will review billing volumes, analyze and manage billing rules, and interact with other departments to resolve incidents and modify contract conditions. The role requires proficiency in English, strong analytical skills, and experience with administrative tasks.

Junior RF Engineer (Chinese) needed for radio network optimization, data analysis, and digital platform maintenance. Must have a science or engineering background, strong logical thinking, and fluency in Chinese.

The Chief Technology Officer (CTO) will lead the company's technology strategy and execution, ensuring alignment with business objectives. This role oversees engineering and development teams, manages technology infrastructure, and drives growth and innovation.

Lead technology strategy and delivery for a high-growth aviation technology scale-up. Deep technical expertise and enterprise delivery experience required. Proven track record in rapidly scaling product or platform businesses, with aviation technology experience essential.

Provide customer support for the evoke brand across multiple communication channels. Resolve customer issues, collaborate with internal departments, and ensure a positive customer experience while adhering to regulatory standards.

RF/MW Solution Engineer needed to lead customer engagements, demonstrate Keysight products, and support sales. Requires a Bachelor's degree in Electronics Engineering, experience with RF/MW/mmW communications systems, and fluency in English and Spanish.

HR Intern to support recruitment and training initiatives. Responsibilities include recruitment cycle support, training management, and employer branding activities. Must be fluent in English and pursuing a Bachelor's or Master's degree in a related field.

Sales Broker needed for energy sector specializing in biomethane commodities. Fluent Dutch and English required. Experience in sales, brokerage, or trading desired. Build customer relationships, identify solutions, and negotiate deals.