backend developer English-speaking jobs in Oviedo

Junior Talent Acquisition Specialist needed to source, screen, and manage candidates for technical and non-technical roles. Experience in tech or engineering recruitment required. Must be proficient in LinkedIn Recruiter and ATS tools. Excellent communication and organizational skills are essential.

Designs, implements, and manages security controls between AWS and Kubernetes EKS environments. Conducts threat modeling, code review, and penetration testing on AWS infrastructure. Configures web application firewall rules and automates security checks. Collaborates with Platform and Infrastructure teams.

Senior Mechanical Estimator needed for water treatment and industrial projects. Prepare cost estimates for mechanical and plumbing systems, including materials, labor, and equipment. 5-10 years of estimating experience in construction, mechanical, or plumbing projects required.

Junior Sales Engineer to support global sales of fiber lasers and solutions. Develop customer relationships, advise on technical requirements, and participate in problem solving. Requires a technical background in telecommunications, physics, or industrial engineering with a specialization in photonics. Fluent English and residence in Valencia province or near.

Designs and implements engineering processes (design, product, and manufacturing) within the 3DEXPERIENCE platform. Requires 5+ years of 3DEXPERIENCE/ENOVIA PLM implementation experience and end-to-end project experience.

Mobile Developer to design, develop, and maintain hybrid mobile applications using Ionic. Requires 3+ years of experience, proficiency in Ionic Capacitor, and B2 English. Collaborate with designers, QA, product, and backend teams.

Develop and maintain APIs using ASP.NET Core hosted on Azure. Write and maintain automated unit and integration tests. Implement and manage monitoring and alerting solutions on Azure. Collaborate with cross-functional teams in an Agile framework.

Business Development Manager to develop and implement B2B sales strategies for digital campaigns across Poland and Europe. Requires fluency in Polish and English, 3+ years of experience in digital media sales, and a strong network within the digital industry.

Develops business opportunities in low-carbon fuels and hydrogen derivatives across Asia. Delivers commercial frameworks, investment theses, and offtake agreements. Manages project delivery and monitors regulations.

Develop, deliver, and validate next-generation cloud-based solutions for Digital TV products. Execute automated test scenarios, review solution architecture, and set up test environments. Analyze test results, troubleshoot failures, and define metrics for service monitoring. Provide direct customer support, including technical guidance and incident response.

Develop and manage strategic relationships with key technology integrators in Spain and Portugal. Drive indirect sales and business growth by identifying co-selling, cross-selling, and joint solution development opportunities.

An AI & Automations Operations Intern will design, build, and scale AI-powered operational systems. You will support day-to-day operations, assist with operational processes, and contribute to the creation and improvement of automations.

Remote Business Assistant to support entrepreneur managing MICE Agency, B2B startup, and multiple companies. Responsibilities include research, presentations, communication, document management, scheduling, and event coordination.

As a 3D Visualiser, you will create photorealistic renderings, animations, and flythroughs of commercial interior projects. You will translate design concepts into compelling visuals for RFPs, presentations, and client communication.

Provides critical support across invoicing, vendor management, financial reporting, HR administration, and operational coordination. Ensures accurate financial transactions, maintains compliant documentation, and coordinates with external partners.

Tech Lead with 5+ years iOS development experience in Swift and SwiftUI. Translate business requirements into technical specifications and lead team initiatives. Must have published two or more iOS apps and strong communication skills in English and Spanish.

Hospitality Intern to support tourism distribution, reservations, and guest services. Responsibilities include responding to customer inquiries, providing guest support, updating property information, and managing reservations.

Opdenergy seeks a Project Finance Intern to support the project finance team. Tasks include preparing market reports, investment memorandums, and presentations; assisting with financial transaction origination, negotiation, and closing; conducting research and analysis; and attending meetings with financial institutions.

Project Product/Quality Assurance (PA/QA) Engineer will establish, manage, and implement PA/QA arrangements within software development projects. The role requires a university degree in an engineering, technical, or scientific discipline and minimum 5 years of experience in Product Assurance, Quality Assurance, or software engineering.

Mobile Engineer will design, develop, test, and maintain cross-platform mobile applications using .NET MAUI and Xamarin. Responsibilities include integrating with RESTful Web APIs, ensuring application performance and security, and collaborating with other teams. Requires 4+ years of experience in a similar role and strong proficiency in C# and the .NET ecosystem.