backend developer English-speaking jobs in Castile-La Mancha

Build and scale Balance's B2C marketing engine, owning user acquisition strategy across multiple channels. Optimize customer acquisition cost (CAC) and lifetime value (LTV) metrics. Develop and execute organic and paid marketing strategies, manage marketing budget, and collaborate with cross-functional teams.

Global Enterprise Partners seeks a Spanish and English speaking SAC Planning Consultant with 5+ years of experience in SAP Analytics Cloud and BPC. Must have experience with planning and consolidation tools, FP&A processes, and data warehousing concepts.

Experienced ABAP HCM Technician needed for design, development, and implementation of SAP HCM programs. 6-8 years of experience in SAP ABAP HCM programming required. Strong knowledge of SAP HCM modules and proven experience in project phases from design to support. Must be based in Spain.

Experienced Sales Agent sought to manage and expand existing customer base in Spain and Portugal. Responsibilities include acquiring new wholesalers, developing distribution networks, and executing sales strategies. Requires fluency in Spanish and English, proven sales experience in foodservice or retail, and a strong entrepreneurial drive.

Senior Physicochemical Laboratory Technician will plan laboratory activities, manage human resources, and ensure accurate results. Requires a university degree in Chemistry, Biochemistry, Biology, or Biotechnology and at least 7 years of experience with GMP regulations and analytical methods. Experience managing a technical team in a laboratory is preferred.

Manage day-to-day bookkeeping, journal entries, and reconciliations. Support monthly, quarterly, and annual closings. Oversee accounts payable, receivable, and employee expenses. Ensure accurate coding of accounting entries and maintain organized financial records.

As a Product Specialist, you will ensure the smooth operation, continuous improvement, and value delivery of live IT products. You will support the Product Owner in backlog management, prioritization, and stakeholder communication. You will also identify opportunities for product optimization and ensure alignment with business needs.

Senior Dell Boomi Developer will design, build, and maintain integration processes using Dell Boomi. Responsibilities include developing real-time and batch integrations, collaborating with the Integration Lead, and executing unit, integration, and end-to-end tests.

Compiles and manages registration dossiers and variations, coordinating submissions and follow-up with Health Authorities. Advises on regulatory impact and participates in product development and strategy. Requires a university degree in life sciences, minimum 2 years of experience, and proficiency in English.

Embedded Software Engineer to develop C/C++ software for high-performance embedded environments. Implement concurrent programming, process optimization, and resource control. Integrate, debug, and test systems based on microcontrollers.

Lead cross-functional R&D project teams in the development of power electronics solutions. Manage project scope, budget, planning, and milestones. Ensure quality, timing, and successful releases. Collaborate with stakeholders, manage risks, and support product roll-out.

Senior Data Scientist/AI Engineer specializing in AI Safety to lead adversarial testing, risk assessment, and safety evaluations for LLM- and agent-powered chatbot systems. Focus on ensuring AI technologies are safe, reliable, and aligned with business and user needs.

Develops, maintains, and optimizes quotation tools for the solar tracking business. Collaborates with regional pre-sales teams to gather requirements and implement tool updates. Provides training and support to ensure tool proficiency across all departments. Analyzes tool usage data to identify areas for improvement and provide recommendations for process optimization.

Business Development Representative to drive outbound prospecting, qualify leads, and exceed KPIs in the UKI market. Must be proficient in English, tech-savvy, and comfortable with cold calling, email, and LinkedIn.

Payroll Subject Matter Expert needed for a well-established international organization. Oversee payroll processing, ensure compliance with Spanish labor law, and manage relationships with external payroll providers.

Support the execution of marketing activities across international markets. Create, adapt, and update content for various platforms. Assist with social media management, content creation, and documentation.

Graphic Designer needed for in-house agency at sports and entertainment holding company. Develop campaigns, brand proposals, and activations. Collaborate with creative team to bring ideas to life. Must have 5+ years experience in advertising, proficiency in Adobe Suite, and strong understanding of branding. Native Spanish and English required.

The M&A Senior Analyst / Junior Associate will assist in the execution of mergers and acquisitions, including drafting and reviewing transaction documents, supporting client meetings and negotiations, and performing financial modeling and valuation analysis.

Costing Project Manager to benchmark powertrain system costs, analyzing competitor data and providing insights for design and process optimization. Requires 7+ years of automotive powertrain costing experience, cost benchmarking expertise, and proficiency in costing software.

Two tenure-track Lecturer positions in ICT Engineering are available at Universitat Politècnica de Catalunya – BarcelonaTech (UPC). Successful candidates will have a PhD in a relevant field, a strong publication record, and expertise in AI, Cybersecurity, Telecommunications, or Electronics.