frontend developer English-speaking jobs in León

Develop, manage, and implement comprehensive brand growth plans, analyze market data and consumer feedback, and coordinate brand communication plans.

Develop and maintain business relationships with corporate customers to meet sales objectives. Manage existing client portfolios, leading negotiations and reviews.

Research Scientist to develop and apply AI and data-driven methods for causal inference in medicine and chemistry. Focus on foundational research, collaboration, and publication. Strong research track record and Python proficiency required.

Provide customer service as the first point of contact for patients, addressing their needs and inquiries. Maintain records of interactions and utilize software and tools to ensure excellent customer service.

Design & Marketing Assistant needed for a dynamic company with four diverse brands. Responsibilities include graphic design, social media content creation, and marketing execution. Must be fluent in English and Spanish, proficient in Adobe Creative Suite, and have strong copywriting skills.

Lead the guest experience at a 5* lifestyle hotel, ensuring personalized service and exceeding expectations. Manage VIP guests, handle incidents, and coordinate with departments to maintain luxury standards.

Systems Administrator to manage VMware ESXi and vSphere environments, including patching, upgrades, and monitoring. Experience with Windows Server, Active Directory, and scripting required. B2 English proficiency necessary.

Software Engineer will architect and build end-to-end features, own system performance and reliability, and drive the technical roadmap. Responsibilities include designing RESTful APIs, modeling database schemas, and building user interfaces using TypeScript, Vue/React/Next.js, and AWS.

Regional Growth Manager Europe will lead acquisition strategy in Germany, Austria, and surrounding markets. The role focuses on identifying and converting new travel agencies, activating underperforming branches, and supporting regional acquisition targets. This individual contributor role manages the full acquisition lifecycle and coordinates activities across digital channels, marketing, and retail stakeholders.

Support day-to-day site operations for clinical research studies, ensuring smooth communication, accurate documentation, and compliance with research standards.

Design Technician to create and maintain 2D/3D drawings and models for warehouse and logistics environments. Experience in Revit and AutoCAD required.

Manage a team of legal professionals, coordinate with country-specific points of contact, and evaluate People/Labour risks. Assist the People department in adapting business strategies to local regulations.

Junior Project Coordinator to assist with coordinating Central Lab projects, client communication, sample logistics, and documentation. Requires a Life Sciences degree, project coordination experience, and proficiency in MS Office.

Bilingual (English/Spanish) Sales Representatives needed to identify local businesses that benefit from our client communication service. Commission-based role with €200+ per closed client.

Driven real estate agents with experience selling to international buyers from Northern Europe are sought for a leading agency on the Costa del Sol. Must have 1+ year of real estate experience and be located within commuting distance of Estepona, Marbella, Fuengirola, Málaga, or Nerja. Fluency in English is required, additional languages are a plus.

Product Definition Analyst / Functional Analyst needed to join a travel technology company. Analyze business requirements, define functional solutions, and contribute to the development of a cloud-native issuing platform for virtual credit cards.

System Engineer to contribute to the development of the world's first hydrogen-powered commercial aircraft. Responsibilities include performing analysis, validation, and verification of system requirements, developing and verifying System Interface Documents, defining and executing V&V activities, and assessing technology maturity. Requires a University degree in Engineering with at least 5 years of experience as a system engineer, significant experience in Validation and Verification activities, and experience in DOORS.

CQV Consultant to execute commissioning, qualification, and validation activities for pharmaceutical/biotech equipment and systems. Prepare and execute C&Q and validation documentation. Collaborate with cross-functional teams to ensure compliance with GMP, regulatory guidelines, and project timelines.

Business Development Manager to drive growth in the CCTV and integrated security market. Minimum 2 years of experience in CCTV or electronic security sales required. Full professional proficiency in English is mandatory.

Junior Sales Manager to support Area Sales Managers in proposals, presentations, and negotiations. Build and maintain client interactions, prospect new clients, and provide product training. Requires a Bachelor's degree in a scientific field and strong communication skills.