backend developer English-speaking jobs in Castile-La Mancha

Manages the Group's Climate Action Plan and Decarbonization and Energy Transition plans. Develops and implements decarbonization strategies for facilities and supply chains. Calculates and manages GHG emissions, including Scope 3 calculations. Collaborates with stakeholders to gather data and identify decarbonization opportunities. Leads the Technical Workstream on 'Environmental Stewardship – Energy and Emissions'.

Tangent is seeking a passionate Customer Success Manager for a leading SaaS platform in Barcelona. You will build relationships with clients, understand their needs, and ensure they maximize their investment in the platform.

The Globe English School seeks an on-site English Teacher to deliver engaging lessons to students of all ages and levels. Must have C2 English proficiency, teaching experience, and a relevant teaching qualification.

Own core gameplay design, loops, and mechanics for new casual mobile games. Collaborate with engineers and designers to build, test, and refine mechanics. Iterate quickly based on data and work within WildCard's model for scalable success. Must have 3+ years in Product Management or Game Design with a proven track record of designing and optimizing core gameplay.

Software Engineer with 5+ years of experience in Java and Spring development. Experience with message brokers (MQTT), microservices, Docker, PostgreSQL, and time-series databases is required. Must have strong communication skills in English and Spanish.

Accounts & Administrative Officer to support financial and administrative operations for a leading yacht service company in Mallorca. Responsibilities include accounts payable/receivable, invoicing, payroll support, and office management. Requires a Bachelor's degree, 2+ years' experience, strong bookkeeping knowledge, and fluency in English & Spanish.

The B2B Events Marketing Manager will design, execute, and optimize the marketing strategy for European Blockchain Convention events. This role will own the customer journey for sponsors and attendees, drive audience growth and ticket sales, and collaborate with cross-functional teams.

AX Partners seeks a Lawyer to provide legal support for real estate investments. Responsibilities include due diligence, transaction documentation review, legal oversight of investment vehicles, and asset management.

Software Engineer (Full-Stack) will design and implement backend services for signal ingestion, processing, and execution. Responsibilities include building and maintaining event-driven, distributed systems, working with AI-powered workflows, and developing frontend dashboards. Requires 3+ years of experience as a software engineer (full-stack) with strong experience in React + TypeScript and Node.js.

Lead Backend Software Engineer for cloud software solutions. Design and implement cloud-based applications and services. Experience with cloud-native architectures, Infrastructure as Code, and DevOps practices required.

Provides onsite network support for infrastructure activities, including device installation, cabling, and troubleshooting. Coordinates with remote teams for configuration, migrations, and issue resolution. Requires basic networking knowledge, vendor familiarity, and hands-on experience.

Freelance Business Development/Sales professional to drive offline retail expansion for a premium mobile accessories brand in Barcelona. Experience in B2B sales, preferably in consumer electronics or lifestyle brands, required.

The Planning Sr Manager develops demand and supply plans for all EU channels, guiding planners and ensuring alignment with seasonal strategy. This role requires strong analytical skills, cross-functional collaboration, and experience in a seasonal industry.

Drives the vision and adoption of Power Apps, Power Automate, and Power Virtual Agents across the organization. Bridges business needs with technical capabilities to deliver scalable, secure, and user-centric solutions.

Brand Manager to lead growth and positioning of a nutritional supplement brand. Execute brand strategy across digital channels, turning insights and data into growth initiatives. Develop campaigns and launches in collaboration with cross-functional teams.

QA Test Automation Engineer (Cypress) needed with 3+ years of experience in automation software testing. Proven experience with Cypress for UI automation, API testing tools (Postman, Pytest), and JavaScript/TypeScript.

Solution Specialist will work with small and medium-sized companies, maximizing up-sell and cross-sell opportunities. Responsibilities include presenting cloud solutions, providing technical product overviews, and conducting trainings. Requires proficiency in Swedish and English, 3-6+ years of technology sales or business development experience, and a minimum Fundamentals certification.

Operations Intern will build and optimize scalable processes to support REVEL's rapid growth. Interns will work cross-functionally on strategic projects impacting growth, efficiency, and customer experience.

Investment Analyst to support private equity investments in technology-enabled financial businesses. Responsibilities include financial analysis, valuation, company research, and portfolio monitoring. Seeking recent graduates or those graduating in 2026 with strong analytical skills and interest in finance and technology.

Administrative & Compliance Officer needed for a leading innovation ecosystem. Manage financial control of projects, coordinate compliance framework, and oversee billing and reporting. Requires 2-3 years of experience in administration, finance, or compliance.