frontend developer English-speaking jobs in León
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CYBER SECURITY SENIOR ENGINEER
- Keysight Technologies
- Barcelona
- February 27
Leads the design and deployment of secure and resilient ML systems, focusing on adversarial robustness, secure training, and model lifecycle security. Collaborates with researchers, data scientists, and infrastructure teams to design ML security solutions.
ServiceNow Developer - Remote (Contract)
- Avenga
- Castro
- February 27
ServiceNow Developer to contribute to network service management, inventory, and orchestration solutions. Develop and customize solutions using Glide and other technical components. Implement, configure, and enhance the Telecom Network Inventory (TNI) module. Design and develop workflows using Flow Designer.
Project Developer - CRM
- Crevel Europe
- Madrid
- February 27
Freelance Shopify Developer needed to maintain and enhance a Shopify Plus B2B eCommerce platform. Responsibilities include updating product pages, implementing marketing designs, and ensuring a responsive user experience. Must have experience customizing Shopify websites, Liquid templating, and HTML/CSS.
Scientist
- Kymos Group
- Barcelona
- February 27
Scientist to design, supervise, and execute transfer and validation studies of biological and small molecule products in a GMP environment. Requires experience with chromatography, HPLC, and technical documentation.
International Order Management & Export Operations Coordinator
- YVYRA - EXTERPARK
- Castellbisbal
- February 27
International Order Management & Export Operations Coordinator will manage and process complex international orders within an ERP system, ensuring accuracy across product references, quantities, pricing, and shipping configurations.
Customer Service Representative (Private)
- Ultralytics
- Madrid
- February 27
As a Customer Success Representative, you will manage a portfolio of 200+ SaaS accounts, ensuring customer engagement, support, and retention. You will utilize HubSpot and internal playbooks to track customer health, resolve issues, and contribute to knowledge bases.
Security Control Manager
- Securitas Seguridad España
- Madrid
- February 27
Leads physical security operations at multiple critical infrastructure facilities in Madrid. Manages site security personnel, oversees training and development, and ensures compliance with security procedures. Evaluates security operations effectiveness and collaborates with clients and stakeholders to enhance security.
Accounts Receivables Project Specialist
- Shiji Group
- Barcelona
- February 27
Accounts Receivable Specialist to ensure accurate sales invoice information in ERP and support APAC accounting. Requires 2+ years of finance experience, ERP proficiency (Navision preferred), and strong attention to detail. Must be highly organized and collaborative.
Project Purchasing Buyer
- Oysho
- Barcelona
- February 27
Fashion Buyer for Activewear department. Analyzes sales trends, collaborates with design team on product selection, negotiates with suppliers, monitors production, and maintains market awareness. Requires 3-4 years of experience, analytical skills, negotiation skills, and a fashion sensibility.
Senior Consultant - Implementation Services
- Konecta
- Castro
- February 27
Senior CX Consultant to design and demonstrate Genesys CCaaS solutions. 3+ years of experience in Contact Center pre-sales, solution consulting, or technical sales required. Deep Genesys technical understanding and configuration knowledge essential. Bilingual proficiency in English and Spanish mandatory.
Vacature Juridisch adviseur
- International Materials LLC.
- Madrid
- February 27
In-House Legal Counsel to support global trading and operations teams. Provide legal advice on commercial contracts, manage litigation and dispute resolution, and support corporate, HR, and immigration matters.
Senior Account Manager (Dutch - speaking) - Hybrid - Cloud Solutions MV02
- Concentrix
- Valencia
- February 27
Senior Account Manager will secure new customer wins for Cloud, maximize up-sell and cross-sell opportunities, and actively monitor pipeline.
Senior Performance Engineer- Hybrid Working
- China Three Gorges (Europe) S.A
- Madrid
- February 27
Senior Performance Engineer needed for a leading renewable energy multinational. Manage data sources, analyze asset operation, and propose improvements to power plant generation. Requires a Bachelor's degree, 8+ years of energy industry experience, and advanced English and native Spanish proficiency.
CRM Specialist - Online Retail
- Venga
- Madrid
- February 27
Venga seeks a CRM Specialist to own and execute the company's CRM strategy using emails, push notifications, and in-app messaging. This role involves designing, building, and optimizing automated communication flows, managing user segmentation, and monitoring CRM performance. The ideal candidate has hands-on experience with CRM and CDP, understands user journeys and retention mechanics, and can write clear, concise, and engaging messages.
Content Writer (remote)
- AgileTV
- Vitoria-Gasteiz
- February 27
Content Editor needed to manage campaigns, create and publish content across multiple platforms, and collaborate with cross-functional teams. Requires at least one year of experience in content creation and campaign management, familiarity with CMS platforms, and strong communication skills in Spanish, English, and German (minimum B2 level).
Group Data Technical Lead
- EQUATORIAL COCA-COLA BOTTLING COMPANY
- Catalonia
- February 27
The Data Technical Lead designs, implements, and ensures quality assurance of data solutions within a specific business domain. This role bridges enterprise data architecture and operational delivery, ensuring data initiatives are well-designed, implemented, scalable, and aligned with business needs. Responsibilities include technical design, implementation, and quality control of data solutions, including the evolution of the Data Lake.
Copywriter needed
- INFINNI
- Barcelona
- February 27
Copywriter needed to translate brand and marketing strategy into execution. Write and edit copy for website pages, campaigns, emails, events, and product launches. Adapt messaging across formats and channels while maintaining a consistent voice. Collaborate with Brand, Product Marketing, Growth, and Design.
Director of Banking & Finance
- Balt
- Barcelona
- February 27
The Finance Manager Spain & Portugal is responsible for the overall financial management of the company's operations in Spain and Portugal. This role includes leading the finance team, overseeing external accounting and tax providers, and ensuring accurate financial reporting.
Data Governance a
- Connect Vision International
- España
- February 27
Data Governance Engineer needed for a permanent, remote role in Spain. 3+ years of experience in IT projects and platform support required. Expertise in Databricks Unity Catalog, Collibra, Azure Cloud, and Azure DevOps pipelines is essential. Strong communication and problem-solving skills are a must.
GLOBAL REGULATORY AFFAIRS TRAINEE
- Werfen Immunoassay
- Lliçà d'Amunt
- February 27
Global Regulatory Affairs Trainee will maintain regulatory dossiers, participate in process improvement projects, and prepare documentation for international medical device registrations.




















