backend developer English-speaking jobs in Oviedo

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.

YOUNG seeks a strategic recruitment partner to build the talent engine for its global venture platform. The ideal firm is entrepreneurial, data-driven, and experienced in multi-brand, international hiring.

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.

Marketing Manager to lead global marketing strategy, brand positioning, and 360° growth campaigns. Requires 7+ years of experience in mobility, automotive, tourism, or related sectors with expertise in digital marketing, brand management, and team leadership.

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.

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.

Full-Stack Developer to design, develop, and maintain SaaS platform and AI agent infrastructure. Experience with PHP (Laravel), Node.js/Typescript, Vue.JS, APIs, databases, and Linux environments required.

Grenergy seeks a Modelling Specialist to develop and optimize energy and financial models for PV and BESS projects. The role involves collaborating with teams to evaluate, structure, and execute projects, prepare financial models, and communicate findings to stakeholders.

Trade Finance Services Expert will support the growth of business by delivering Bank Guarantees and SBLCs. Responsibilities include drafting, reviewing, and analyzing guarantee and SBLC wordings, issuing, amending, and renewing domestic and cross-border guarantees/SBLCs, and monitoring the portfolio of guarantees. The role requires experience in URDGs 758 and ISP 98, strong organizational and analytical skills, and fluency in Spanish and English.

As a Founding AI Fullstack Engineer, you will architect and develop Python/Django backend systems for AI-driven HR workflows. You will design and implement agentic AI workflows, build conversational AI components, and utilize AI-assisted coding tools to accelerate feature development.

Accountant needed for day-to-day accounting activities related to the Portuguese entity, with a focus on payroll. Responsibilities include recording transactions, maintaining internal accounting, collaborating with external accountants, and preparing financial reports. Must have a Bachelor's degree in Accounting, Finance, or a related field, fluency in Spanish and business-level English, and experience with ERP systems.

Full Stack Engineer to develop and maintain scalable backend systems using Node.js and Adonis. Manage databases, deploy services, and integrate AI capabilities.

Designs, develops, and deploys Tibco-based interfaces for data exchange across BNP Paribas Personal Finance, the Group, and external applications. Collaborates with project managers and ensures compliance with IT-Risk and obsolescence requirements.

Experienced Sales Manager to lead and manage a real estate team in Marbella. Minimum 5 years of proven experience in real estate sales management, specifically in the Marbella market. Fluent English required, Spanish is advantageous.

Senior Multi-Cloud Martech / Salesforce Engineer needed for a long-term engagement in Madrid. Leads technical delivery across Salesforce ecosystems and multi-cloud platforms, designing, developing, and integrating solutions for customer engagement, CRM, and digital marketing.

Embedded Software Engineer to design, develop, and implement C/C++ software for defense systems. Experience with RTOS, ARM microcontrollers, communication protocols, and version control is required.

The Senior Data Analyst & Clinical Data Manager analyzes clinical trial data, develops reporting and visualization strategies, and ensures data management compliance. This role leads data management activities from study start-up to database lock, optimizing data workflows and collaborating with cross-functional teams. Requires a Bachelor's Degree in Life Science or Health Informatics, fluency in English, and 5+ years of experience in the pharmaceutical sector.

Leads a global, 24/7 cyber defense and security operations function spanning IT and OT environments. Sets the long-term vision for the Cyber Defense Centre while ensuring seamless day-to-day security monitoring, detection, and incident response. Accountable for service quality, tooling strategy, KPIs, budget ownership, and development of cyber professionals. Represents the CDC internally and externally, contributing to enterprise-wide security initiatives and engaging with the wider cybersecurity community.

MarketStar seeks an experienced Category Alliances Program Manager to execute global Alliance-sponsored programs for HP's PS Consumer business. This role ensures seamless program activation across markets, collaborating with Alliance teams, Category, Marketing, and HP Stores stakeholders. Responsibilities include program planning, performance tracking, market readiness activities, and stakeholder alignment.

This field sales position manages a customer portfolio, focusing on driving store performance through Tax Free Shopping and other services. Responsibilities include account management, training, sales target achievement, and relationship building with merchants.