backend developer English-speaking jobs in Oviedo

Operational Excellence Expert to drive continuous improvement across international manufacturing sites. Lead OPEX assessments, implement foundational pillars, and partner with site leaders to eliminate waste and reduce variation. Requires MSc in Chemical or Industrial Engineering and proven track record in process-driven manufacturing.

Design System Designer needed to maintain and evolve a code-backed design system. Collaborate with design and engineering teams to implement AI-ready solutions and contribute to a unified design-to-code pipeline. Requires 5+ years of product or UI design experience, design system knowledge, coding literacy, and strong communication skills.

Digital Sales Associate fluent in Dutch with Inbound experience needed. Must have a sales aptitude, excellent closing skills, and be goal-oriented. Responsibilities include reaching sales goals, building relationships with potential clients, and cross-selling ADP products and services. Must be fluent in Dutch and English.

Account Manager for top-tier restaurant partners in the North East region of Spain. Develop and execute growth strategies, manage partner relationships, and optimize performance through promotions, marketing, and operational improvements.

The Sr. Marketing Data Analyst will develop marketing analytics to inform data-driven decisions. They will partner with data engineers, product data, and business intelligence teams to create a data structure for marketing data integration. Responsibilities include building dashboards, analyzing marketing KPIs, and providing insights to stakeholders.

Lead the guest experience at a 5* lifestyle hotel, ensuring personalized service and exceeding expectations. Manage VIP guests, handle incidents, and coordinate with departments to maintain luxury standards.

As the R&D Dispensing Systems Expert, you will lead early-stage development of dispensing systems, define project roadmaps, and ensure smooth handover to development centers. You will drive technical excellence and innovation, developing injection-molded dispensing concepts while staying abreast of industry trends. You will collaborate across teams and geographies, working with sales, manufacturing sites, and cross-functional R&D teams.

Leads and manages a 3-person backoffice team, overseeing the full order lifecycle for B2B clients and bespoke projects. Ensures accuracy in invoicing, documentation, and commercial conditions. Acts as a key link between sales and internal teams. Requires a degree in Business Administration, International Business, or similar, with 5+ years of experience in commercial backoffice/customer service in B2B environments, including team management. Fluent English (C1 or above) is essential.

Project Manager for commercial due diligence and investment advisory projects in the energy transition sector. Analyze market trends, competitive positioning, revenue streams, and operational costs.

Senior Backend Engineer to develop key functionalities for a SaaS platform focused on the hospitality sector. Responsibilities include designing, developing, and maintaining secure backend services using Node.js, designing and implementing APIs, and collaborating on front-end development using React.

Senior Account Manager will own and grow a portfolio of key operator accounts, driving revenue growth through product adoption and strategic planning. Responsibilities include game launch and performance management, commercial upselling, and identifying new business opportunities. Requires 3+ years of experience in Account Management, Sales, or Commercial roles within the iGaming industry.

Senior UI Artist to design and implement engaging UI for a mobile game. Collaborate with designers, UX specialists, and developers. Proven experience with Unity and mobile game UI implementation required.

Designs, develops, and implements NoSQL-based systems and AI-powered solutions for the fashion and retail supply chain. Leads development of .NET microservices, integrating Azure AI/ML services for use cases like visual search and product recommendations. Builds and optimizes MongoDB and Azure CosmosDB solutions, and deploys AI/ML models using ML.NET.

The Accounting GL Analyst will analyze margins, identify discrepancies, and propose adjustments to improve financial operations. This role requires strong accounting knowledge, SAP proficiency, and advanced Excel skills.

Market analyst to conduct research on novel nicotine products. Generate qualitative and quantitative analysis from primary and secondary data sources. Reports will be published on an online platform for business and government clients.

Provides operational and scientific support to the Clinical Development team in planning, executing, analyzing, and overseeing preclinical and clinical studies. Focuses on studies involving pharmacokinetics, toxicology, and analytical validation, ensuring compliance with regulatory requirements.

Creative Strategist to lead content strategy and creative production for paid social channels. Develop high-performing creatives, translate data into scalable strategies, and collaborate with the paid media team.

AI Engineer to build and deploy machine learning systems addressing commercial challenges. Strong theoretical and practical experience with LLMs, including prompting, agent workflows, and inference techniques. Must have Python, SQL, and cloud experience (Azure or AWS).

Develop and deploy complex AI solutions, from design and coding to production and optimization. Apply engineering rigor to build scalable, reliable systems that solve real-world R&D challenges.

Develop, maintain, and optimize project schedules for Oil & Gas, petrochemical, or energy projects. Coordinate with Engineering, Purchasing, Construction, and Commissioning departments. Perform critical path analysis, track progress, and generate reports.