backend developer English-speaking jobs in Castile-La Mancha

Senior Consultant with strong pharmaceutical experience sought to drive strategic impact for multinational clients. Focus on understanding human behavior and translating insights into smarter business decisions.

Performance Engineer to conduct performance, load, and stress tests on web applications. Analyze frontend performance and identify bottlenecks. Collaborate with developers and stakeholders to integrate performance testing into CI/CD pipelines.

Lead and coordinate multi-disciplinary engineering teams across battery systems, electric propulsion, mechanical, electrical, and systems domains. Drive hands-on development, prototyping, and early-stage industrialization. Translate strategic objectives into executable engineering plans.

The Client Advisor represents the Company in a luxury boutique, providing expert sales service and ensuring customer satisfaction. Responsibilities include managing client relationships, executing sales processes, and maintaining product knowledge.

This is a fixed-term contract until July 2026 for a Machine Learning Platform Engineer to design, deploy, and operate production-grade machine learning and AI systems. Responsibilities include deploying models, building automated pipelines, and improving reliability and performance of ML services. Strong Python engineering background and experience running production services on cloud platforms are required.

Doofinder seeks a Business Development Manager to drive business growth in the Polish market. This role involves identifying and prospecting clients, managing the full sales cycle, and exceeding revenue targets. The ideal candidate has 1-2 years of B2B sales experience, a proven track record of closing deals, and strong communication and negotiation skills. Native Polish with fluent English or Spanish is required.

The Field Technical Support (f/m/d) resolves customer problems and issues through technical expertise and troubleshooting. This role requires a technical or university degree in a relevant field, experience in maintenance and repair of laboratory equipment, and fluency in Spanish and English.

Senior Development Manager to lead full lifecycle of large-scale, low-carbon data center projects in Madrid. Experience in data center, infrastructure, or real estate development required.

Drive sales cycle, nurture client relationships, and showcase expertise in advanced cloud technologies. Serve as a trusted advisor, guiding businesses in adopting cloud solutions. Identify and capitalize on opportunities to fulfill small and medium sized businesses needs. Collect customer feedback and articulate it back to the business.

Project Documentation Intern to support the Greenfield & Operation Department. Assist with organizing, classifying, and archiving project documentation. Maintain document registers and filing systems. Coordinate with project engineers and team members. Support documentation packages for audits and reviews. Bachelor's degree in Engineering, Business Administration, or equivalent experience required. Chinese mother-tongue, business fluency in English, and fluency in Spanish preferred.

The Biorepository Technician will maintain, develop, and implement protocols within the Biorepository team. Responsibilities include sample reception, quality control, aliquot preparation, and data management. The candidate will work closely with the Biorepository Manager, team members, and the Head of the Sequencing Unit.

Platform/DevOps Engineer will design, build, and operate distributed systems in AWS. Manage and optimize Kubernetes clusters, implement infrastructure as code with Terraform, and automate processes.

Customer Service Representative to provide support for health and travel insurance clients. Handles inquiries, concerns, and issues via phone and email. Requires strong communication, problem-solving, and customer service skills. Bachelor's degree and prior customer service experience preferred.

Application Support Engineers (Level 2 & 3) will provide operational support for core banking applications, investigate and resolve incidents, and collaborate with development and other support teams.

Provides direct support to the Executive Vice President in strategic, financial, and operational matters. Manages EVP priorities, conducts cost analysis, and supports key projects. Requires strong analytical, communication, and organizational skills.

The Sales Manager will develop and execute a regional sales strategy for digital blade solutions across Southern Europe, including inspections, engineering, retrofits, and a SaaS platform. The role requires strong technical credibility and the ability to translate inspection data into actionable repair and life-extension strategies.

Dataiku ETL Engineer will enhance and maintain existing Dataiku ELT flows, contribute to flow redesign, and monitor/optimize performance. Responsibilities include diagnosing and resolving issues, configuring monitoring tools, and collaborating with stakeholders. Requires 5+ years of Dataiku experience, strong Python and SQL skills, Unix/Linux administration, and database knowledge. Experience with financial industry processes and AML/Compliance systems is advantageous.

Provides financial analysis and reporting to support company decision-making. Oversees accounting processes, prepares financial statements, and identifies opportunities for improvement. Requires a bachelor's degree in finance or a related field and 4+ years of experience in accounting and finance.

Senior Accountant needed for the Finance department in Barcelona. Responsibilities include statutory and tax accounting, journal entries, reconciliations, reporting, and liaising with business partners. Requires 6+ years of experience, a bachelor's degree in accounting, and proficiency in Excel. Spanish-GAAP experience is valued.

Leads global regulatory function, ensuring compliance with food legislation and optimizing impact on business. Manages trade facilitation, product development, resource development, and food safety. Designs and modifies regulatory function to suit evolving environment. Engages with industry associations to monitor and influence legislative issues.