frontend developer English-speaking jobs in León

Senior QA Engineer will own quality across a checkout platform, collaborating with engineers and product managers to ensure new features are reliable and scalable. Responsibilities include manual testing, designing test plans, identifying and documenting bugs, and improving QA processes. Requires 3+ years of experience in a QA role with strong understanding of e2e testing, component testing, API testing, and web technologies.

Provides executive support to the Executive Vice President, including financial analysis, project oversight, and stakeholder communication. Manages EVP priorities, prepares reports, and coordinates strategic initiatives. Requires strong analytical, communication, and organizational skills.

Senior UHT Specialist needed for a leading nutraceutical manufacturer. Develop, optimize, and industrialize specialized nutrition products using UHT and thermal processing technologies. Provide technical expertise and support across R&D, manufacturing, and commercial teams.

AMS Business Quality Operations Specialist ensures cybersecurity compliance for a leading international telecommunications company. Responsibilities include producing monthly cybersecurity reports, conducting internal audits, identifying and resolving compliance issues, and managing daily task progress.

FP&A Manager needed to lead financial planning, budgeting, and forecasting for a fast-growing technology group. This role focuses on post-merger integration, financial process standardization, and performance tracking across multiple business units. Requires 5+ years of FP&A experience, including company integrations, and proficiency in financial modeling and Excel.

Korean Air seeks a Cargo Traffic Agent for a one-year contract at Madrid Airport. The role involves managing daily cargo operations, handling irregularities, and supervising documentation and loading/unloading processes. Must be legally authorized to work in Spain and possess a bachelor's degree and fluency in English and Spanish.

Launch and structure Fleet's Cyber Outsourcing Offers across Europe and the USA. Define and implement the sales process for subscription-based cyber offerings, identify and close SMB clients, and collaborate with other Account Executives. Develop and execute outbound strategies targeting traditional SMBs and manage revenue targets.

Design and implement Generative AI solutions for a leading pharmaceutical client. Translate business needs into AI use cases and optimize prompts for Large Language Models (LLMs).

Fullstack Engineer needed to design, develop, and maintain web applications and tools for a space engineering and telecommunications company. Responsibilities include developing front-end and back-end systems, REST APIs, and Python scripts. Requires a computer science or telecommunications degree, 3+ years of experience, and proficiency in JavaScript, Python, and relevant web technologies.

An Accounts Receivable Specialist is needed to manage receivables, perform bank reconciliations, and support client communication regarding payments. The role involves using digital tools, preparing reports, and collaborating on process optimization.

Senior Systems Engineer will design and deploy compute, storage, and platform infrastructure for a software-defined network. Responsibilities include managing Kubernetes clusters, architecting storage systems, and implementing core services. Must have 5+ years of experience in systems engineering, strong Linux administration skills, and Kubernetes administration experience.

Service Support Engineer providing remote technical support for complex systems in the EMEAI region. Troubleshooting hardware and software issues, managing service tasks, and delivering technical training.

Leads the development and execution of integrated marketing and communications strategies for Continental Europe, spanning 14 countries. Manages a team of 10 across media relations, marketing, and internal communications. Drives brand awareness, lead generation, and customer engagement. Oversees B2B marketing programs, campaigns, and thought leadership initiatives. Responsible for executive positioning, issues management, and stakeholder engagement.

Postdoctoral Researcher to conduct finite element simulations of thermal segments in an energy storage system. Validate simulations through laboratory work and collaborate with manufacturers and research institutions. Produce reports and scientific articles. PhD in a relevant field and experience with finite element simulations required.

Leads client acquisition, presents product solutions, and manages onboarding processes for new clients. Ensures regulatory compliance and provides ongoing support throughout the onboarding journey.

GC-MS analyst to characterize and formulate fragrances using state-of-the-art instrumentation. Requires a Bachelor's degree in Chemistry, 3+ years GC-MS experience, strong olfactory skills, and knowledge of fragrance raw materials.

Senior Consultant to assess and validate valuation models within the Numerix library, ensuring compliance with regulatory standards (FRTB, FVA/AVA).

Health & Safety Specialist to support European and Indian operations. Experience in transport, logistics, warehousing, freight forwarding, or industrial settings required. Degree in Occupational Health & Safety, Environmental/Industrial Engineering, or similar. Fluent English.

Senior Software Systems Engineer to design and implement solutions for satellite operations. Responsibilities include understanding requirements, designing architectures, and implementing backend cloud-based components. Requires 5+ years of experience in satellite ground segment solutions and 8+ years in software engineering. Experience with C++, Python, databases, Kubernetes, and agile methodologies is necessary.

The Golang Engineer designs, develops, and maintains high-quality software solutions using Golang ecosystems. This role involves collaborating with cross-functional teams to deliver efficient, scalable, and maintainable code. The Software Engineer contributes to the technical direction of projects and ensures adherence to best coding practices.