frontend developer English-speaking jobs in León

Software Development Engineer needed for contract role in Madrid, Spain. Diagnose and resolve defects, perform debugging, and create technical documentation. Experience with Java, cloud-native technologies (Docker, Kubernetes, microservices), and Agile Scrum is required.

This role supports payroll activities and/or data management/customer service, ensuring accurate and timely output. Responsibilities include processing payroll, supporting statutory and year-end reporting, advising on client queries, and supporting apprentices/associates.

The Clinical Scientist executes medical and scientific activities within assigned clinical studies, supporting design, execution, and documentation under the Global Clinical Lead's oversight.

Office Assistant needed for a fast-growing digital company. Manage administrative tasks, provide reception support, coordinate events, and assist with vehicle administration. Requires excellent communication, a valid driving license (B), and proficiency in Spanish and English.

Telecommunications Engineer needed to provide expert support for AXON Networks products. Design, develop, and refine algorithms, troubleshoot, and collaborate with teams to deliver innovative network access solutions.

The Project Financial Controller will oversee financial planning, budget control, and accounting for assigned projects. Responsibilities include monitoring costs and revenues, preparing financial reports, and collaborating with teams to ensure project viability.

Lead and administer global compensation programs, including salary surveys, benchmarking, merit cycles, and bonus plans. Develop and implement compensation policies and procedures, ensuring compliance with legal regulations. Analyze compensation data, recommend enhancements, and consult with stakeholders on pay decisions.

Data Analytics & Reporting professional to drive data-driven decision making in the Commercial organization. Analyze data from internal and external sources using SQL, PowerBI, and Excel. Lead data tracks for projects, including exploratory data analysis, BI support, and proof-of-concept development. Deliverables include increased customer data completeness, accuracy, and consistency, customer 360 insights dashboards, and customer size classification models.

Senior MEP Engineer to design MEP systems, prepare feasibility studies, and manage construction activities. Requires a degree in a relevant field and 10+ years of experience in MEP installation projects. Fluency in Spanish and English is required.

Support the onboarding and delivery of global GCR engagements by assisting with proposal coordination, transition activities, and performance tracking.

Senior/Lead Game Artist to create concepts and final assets for a high-energy casual mobile game. Responsibilities include market research, cross-team collaboration, and hands-on art creation. Requires strong 2D and 3D production skills, Unity experience, and a proven portfolio.

Provides administrative and financial support to US and Spain subsidiaries. Tasks include payroll, invoicing, account reconciliation, and client communication. Requires fluency in Spanish and English, strong attention to detail, and proficiency in Microsoft Office.

Applus+ seeks an SAP SD Consultant with 3-5 years of experience in configurations, master data, and core sales & distribution processes. Must have strong communication skills and fluency in English. Catalan and Spanish are a plus.

PhD Candidate to join a research project on endometriosis, focusing on personalized medicine and patient-derived organoids.

The Sales Development Representative generates qualified sales meetings for Partners through outbound strategies, commercial campaigns, and direct support. This role also involves preparing sales materials, coordinating meetings, and leading internal committees.

Mechanical Engineer Assistant Intern will support the Technical & Construction Team in resolving and developing mechanical-related activities. Assist with mechanical related technical analysis and procurement. Support preparing technical reports and documentation. Bachelor's degree in Mechanical or Industrial Engineering required. Advanced English and Spanish required.

Supports the Hotel team at UMusic, ensuring HR processes, hiring, and training initiatives align with company culture and strategy. Manages personnel administration, payroll, recruitment, and onboarding. Acts as a liaison between employees, managers, and the People & Culture Director.

Experienced Junior MES Manager needed for global digital manufacturing rollout. Lead MES implementation and integration across sites, standardize production tracking, and integrate with ERP (SAP). 5-7 years of MES experience and strong ERP integration knowledge required.

Senior Cloud Security Operations Engineer will drive detection, hardening, incident analysis, and response across cloud, CI/CD, and on-prem environments. Responsibilities include building security tooling, implementing hardening strategies, monitoring alerts, and collaborating with IT and Engineering. Requires extensive experience in Cloud Security / SecOps, AWS / Azure, Terraform, Kubernetes, and modern cyberattack techniques.

Lead email, SMS, lifecycle, and CRM strategies for a fast-growing DTC beauty brand. Plan and execute campaigns, define lifecycle flows, and drive revenue and retention. Proven experience in beauty and consumable DTC brands required.