frontend developer English-speaking jobs in León

Frontend Developer (React + TypeScript) to design and build accessible, secure, and high-performance web interfaces. Develop modern SPAs using React (v16+/v18) and TypeScript with strict typing and generics. Write and maintain unit tests using Jest and React Testing Library.

Dils Lucas Fox seeks an Office Host to manage the Lounge café/bar service and create a modern, welcoming atmosphere in our Barcelona office. The role involves managing the space, ensuring brand standards, and providing logistical support for client meetings and events.

Experienced 3D Artist needed to create photorealistic models of luxury home décor, furniture, and lighting products. Must have 4+ years of experience working with luxury brands and proficiency in ZBrush, Rhino, or equivalent software.

FunBox seeks a Junior Graphic Designer with 1-2 years of experience to design ads, marketing visuals, and promotional videos for global campaigns. Must have a strong portfolio, basic Adobe skills, and English C1+ proficiency.

The Night Manager oversees all hotel operations during overnight hours, ensuring smooth service continuity and guest experience excellence. Responsibilities include supervising the housekeeping team, coordinating with departments, managing guest incidents, and conducting property walkthroughs.

GRAND seeks a Communications & Marketing Strategist with 6+ years of experience in corporate communications, marketing, or strategic consultancy. Develop and implement integrated campaigns, manage change, handle crisis communications, and strengthen internal and external engagement.

Senior Fullstack Software Developer will develop web and backend applications, ensuring smooth functionality within a department. Experience in PHP, VueJS, Javascript/Typescript, and DevOps methods is required.

Manages end-to-end inbound logistics operations for imported and local parts, including transportation, receiving, warehousing, and delivery to production. Optimizes warehouse operations, inventory control, and material supply. Ensures stable material flow and production line continuity. Coordinates with OEM production lines and 3PL teams.

Senior Data Engineer will design and scale the data architecture for a collaborative AI-native video production platform. Responsibilities include building event, asset, and metadata pipelines, architecting event-driven systems, and ensuring data traceability across AI workflows.

Power Platform & Power BI Consultant to work on data projects. Requires 3-10 years of experience with Power Apps, Power Automate, connectors, and Power Platform ALM. Strong analytical and communication skills needed.

Experienced researchers and scientists with a PhD in Catalysis Research are sought to serve as Editorial Board Members for "Current Catalysis" journal. Responsibilities include contributing to journal development, selecting topics, reviewers, and authors, and reviewing submitted articles.

ESSP seeks a CNS Service Development Engineer to support ongoing contracts and space-based projects. Responsibilities include supporting strategy definition, managing contracts and agreements, providing technical support, and contributing to the CNS business plan.

IT Technical & Functional PM Sr. Consultant in Payments and Payments Technologies & Standards. Leads projects, ensures alignment across workstreams, and provides expert-level services supporting Payment's initiatives. Defines, refines, and manages project scope and delivery approach, identifying gaps, risks, and mitigation actions. Leads requirements definition and validation activities, engaging with business and operations stakeholders. Coordinates development activities across internal teams and external vendors. Manages Change Management activities, including software deployment changes. Acts as a subject matter expert, providing advanced troubleshooting for complex applications, systems, and integrations. Supports day-to-day processing, resolves functional and technical issues, and addresses user queries. Participates in incidents, problems, and change management processes. Contributes to technical/architectural design proposals. Ensures appropriate knowledge transfer and documentation. Experience working within controlled production environments with strong governance.

Legacy Online School seeks reliable K-12 Substitute Teachers for fully remote positions. Substitutes deliver virtual lessons, maintain classroom structure, and track student progress. A Bachelor's degree in Education or related field is preferred, along with prior teaching experience.

Drive commercial expansion for H2SITE by identifying and pursuing opportunities in industrial and industrial gases sectors. Develop sales strategies, prospect customers, and present hydrogen separation solutions.

Strategic Product Leader to define the future of the Energy Storage business. Lead product portfolio strategy, drive execution from market insights to launches, and optimize investment in high-ROI innovations.

Sales Assistant to contribute to store turnover and customer satisfaction. Experience in luxury and fashion sales with a focus on shoes required. Excellent communication and customer service skills necessary.

Python Developer to design, maintain, and improve cloud-native DevOps platforms. Develop CI/CD tools, automated testing, and release management strategies. Experience with Azure, Terraform, FastAPI, and Python required.

This role involves managing a portfolio of small and medium-sized clients, ensuring their success with the company's solution. Responsibilities include building relationships, driving product adoption, managing contract renewals, advising on buying decisions, and executing onboarding processes.

Inbound Specialist for the Dutch market. Provides B2B customer support via chat, email, and phone. Requires fluency in Dutch (C2) and English (C1). Supports customers with technical and product-related questions. Collaborates with sales, product, and technical teams.