frontend developer English-speaking jobs in León

The Membership and Office Assistant will assist in WAZA’s global membership processes, act as a first point of contact for members, and ensure smooth day-to-day office operations. This role supports clear, professional communications with members, committees, and partners, contributing to WAZA’s global visibility and impact.

Data Analyst will identify and mitigate risks, develop Business Continuity Plans, and lead fraud prevention investigations. The role requires 2-4 years of experience in Audit, Risk, Fraud Management, or Data Analytics, proficiency with data analytics software, and a Bachelor's degree in a related field.

Opdenergy seeks an Asset Management professional to support renewable energy projects. Responsibilities include monitoring project performance, ensuring compliance with financing contracts, preparing financial reports, and analyzing project income and costs.

Insurance Intern to support the Finance Department at China Three Gorges Europe. Assist with administrative tasks, policy renewals, documentation, and reporting. Bachelor's degree required, fluency in Chinese and English.

Service Delivery Manager for Employee Managed Services (EMS) team providing outsourced payroll services on SAP. Responsible for client liaison, service review meetings, SLA performance monitoring, and escalation management. Requires excellent English communication, data interpretation, and client relationship skills.

Sales Development Executive to drive qualified opportunities through account-based marketing, product demos, and CRM management. Support channel development and contribute to sales process improvement. Requires 2+ years of B2B sales experience, strong communication skills, and familiarity with HubSpot.

Controller Financiero will oversee and control financial processes for international subsidiaries. Responsibilities include monthly closings, financial reporting, KPI analysis, budget planning, and cost control.

UX/UI Designer needed for international creative agency in Barcelona. Shape design direction, deliver high-quality interfaces, and collaborate on ambitious projects. Must have advanced Adobe Creative Suite skills, 4+ years of website/app design experience, and strong UX/UI knowledge.

Serves as the primary procurement contact for renewable energy projects (PV, energy storage, wind) in a designated region. Responsible for the end-to-end procurement process, including strategy formulation, risk management, package execution, and supplier network development. Requires 5+ years of experience in large-scale project procurement, with a focus on overseas projects in the renewable energy sector.

This field sales position manages a customer portfolio and campaigns to optimize store performance in Tax Free Shopping and other areas. Responsibilities include training, relationship management, achieving sales targets, and providing support to merchants.

Provides personalized customer service and builds client relationships in a luxury boutique setting. Supports daily store operations and contributes to achieving sales goals.

Senior Backend Engineer with 5+ years of experience in Java and Spring Boot development. Design, develop, and maintain scalable backend systems and APIs for a fast-growing tech startup. Strong SQL and relational database knowledge required.

Senior Financial Controller needed to implement internal controls, oversee IFRS compliance, manage audits, and lead budgeting, cash flow, and financial risk management.

IT Recruiter to source, qualify, and build a pool of freelance IT consultants in Barcelona. Minimum 1 year experience in IT delivery or recruitment required. High level of English and results-driven mindset essential.

Senior Python Developer needed for a cybersecurity startup in Barcelona. Build and scale a new product line focused on real-time monitoring, telemetry, and remote execution. Expertise in asynchronous programming, RESTful APIs, PostgreSQL, Docker/Kubernetes, and event-driven architectures required.

Sells Trend Micro's products and services using a strategic sales approach, developing relationships with key individuals within named and prospect accounts. Drives quarterly business reviews with selected customers to ensure value from Trend Micro investment and keep customers updated on product roadmaps. Develops strategies and orchestrates company resources to maximize sales volume within assigned and prospect accounts.

Salesforce Specialist & Sales Operations professional to support the Iberia organization. Responsibilities include optimizing CRM and commercial systems, providing user support, and collaborating with international teams. Requires 2+ years of experience in CRM, sales operations, or related fields with strong Salesforce knowledge and excellent communication skills. Fluent English and Spanish required.

Knowledge Graph Engineer will design, implement, and maintain scalable biomedical knowledge graphs. Requires 7-10 years of experience in health informatics, bioinformatics, or clinical data domains with proficiency in graph-based data modeling, semantic integration, and RDF, OWL, SPARQL, and graph databases.

Business Intern to support project execution and delivery for local and international projects. Requires strong analytical, problem-solving, and project management skills. Previous experience in a startup, agency, or consulting environment preferred. Fluent in Spanish and English.

Designs, develops, and maintains scalable data transformation workflows using dbt. Navigates Snowflake to ensure data accuracy, performance, and compliance. Orchestrates data pipelines and scheduling using Airflow. Writes and optimizes SQL queries for data extraction, transformation, and loading. Collaborates with data engineers and analysts to deliver high-quality data solutions. Monitors and troubleshoots data workflows.