frontend developer English-speaking jobs in León

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 within the aviation industry.

Validation Manager will lead and coordinate validation activities for critical testing applications, ensuring compliance with validation plans and BI standards.

The Collector will manage invoice collection, resolve customer issues, and ensure timely payments. Responsibilities include negotiating with customers, monitoring invoice collection, identifying late payments, and coordinating with internal departments.

Infrastructure Automation Engineer to manage and evolve global backup and restore infrastructures for servers, databases, and NAS services. Automate operational processes, analyze logs, and improve monitoring and service quality.

Computer System Validation Senior Consultant will lead ERP and computerized system validations (IQ, OQ, PQ) ensuring compliance with EU GMP Annex 11, FDA 21 CFR Part 11, and GAMP 5.

Product Line Manager for Agriculture and Industrial Biotech will define product vision, roadmap, and strategy. Lead market research, competitive analysis, and cross-functional stakeholder alignment. Engage with clients, develop commercial materials, and ensure regulatory compliance. Requires a Bachelor's degree in a relevant field, 3+ years of industry experience, or 2+ years as a product manager. Strong communication, quantitative, and organizational skills are essential. Fluency in Spanish and/or Portuguese and English is required. Willingness to travel is necessary.

Investment Analyst to support private equity investments in technology-enabled financial businesses. Responsibilities include financial analysis, valuation, company research, and portfolio monitoring. Seeking recent graduates or those graduating in 2026 with strong analytical skills and interest in finance and technology.

Lead and architect large-scale SAP S/4HANA transformations and SAP Business AI initiatives for global clients. Define enterprise SAP architecture roadmaps and drive AI strategy, use-case identification, and adoption.

Business Analyst needed for a multinational banking client in Madrid. Lead analysis of information related to the Payments DataHub initiative and support the Product Owner. Analyze, structure, and classify payment information. Prepare documentation such as user stories, scope documentation, and TOMs. Minimum 3 years experience in international payments projects and 2 years in Big Data projects required. Bachelor's Degree in a relevant field.

Sales Representative to promote and sell properties in the Axarquía region, assisting international clients with buying and selling homes.

Legal professional to draft, review, and negotiate commercial contracts for iGaming and digital entertainment company. Support internal teams with legal guidance and risk awareness. Minimum 2 years of experience in iGaming legal roles required.

Lead and manage a QA team to ensure high-quality software solutions. Develop, implement, and maintain QA processes and standards across the software development lifecycle. Promote automated testing practices and oversee test planning, execution, and defect tracking. Collaborate with cross-functional teams to incorporate QA processes into agile workflows.

Junior Business Development Manager to support expansion across Spain. Develop relationships with wholesalers, resellers, and distribution partners. Generate leads, qualify prospects, and manage the full sales cycle.

Build and execute quote proposals for parts and billable services. Partner with commercial and fulfillment teams to understand availability, lead times, costs, and prices. Communicate with end-users and work to increase market capture and Key Account performance.

Platform/DevOps Engineer will design, build, and operate distributed systems in AWS. Manage and optimize Kubernetes clusters at scale, implement infrastructure as code with Terraform, and automate processes.

Quantitative Risk Consultant will contribute to the growth of Prometeia's ERM activities in Madrid, supporting the development of quantitative risk modeling capabilities. Responsibilities include collaborating with a team of business consultants and risk advisors, supporting client engagements in Spain and Portugal, and coordinating project streams related to Credit Risk model development and validation.

Platform Engineer will design and implement scalable Databricks solutions for analytics, ML, and GenAI workflows. Responsibilities include administering Databricks workspaces, implementing Unity Catalog governance, building IaC with Terraform, and implementing CI/CD for notebooks, libraries, and ML assets. Experience with AWS, Databricks, Terraform, GitHub Actions, and Python is required.

The Guest Experience & Concierge Manager designs, delivers, and enhances the guest journey, ensuring personalized, seamless, and luxury-driven experiences. Responsibilities include leading concierge services, managing guest satisfaction, and collaborating with departments to exceed guest expectations.

Data Integration Engineer needed for a multinational industrial company undergoing digital transformation. Design, build, and maintain customer and marketing data integrations between CRM and digital marketing platforms. Ensure data quality, consistency, security, and traceability.

Lead and execute IT audits of ING and its outsourcers, including planning, execution, and reporting. Assess IT controls, conduct interviews, review documentation, and perform technical tests. Communicate audit results to management and produce reports to improve security controls and mitigate risks. Requires 5+ years of IT audit experience, knowledge of IT risk management and governance, and experience leading audits end-to-end. Technical (security) knowledge of IT technologies is required, including operating systems, network infrastructure, database management systems, web technologies, and mobile operating systems.