Senior AI Backend Engineer | Scalable APIs

Indra Group busca un/a Ingeniero/a Backend Python Senior para unirse a proyectos vinculados a soluciones basadas en inteligencia artificial. Puesto híbrido en Barcelona, con diseño de servicios backend robustos y escalables y colaboración con equipos multidisciplinares para llevar soluciones a producción. Se valorarámás de 2 años de experiencia y...

Hybrid Mind is seeking an AI Back-End Engineer to design and build scalable APIs and microservices powering AI-enabled healthcare applications. You will be hands-on across the full software development lifecycle, from architecture and development through testing, deployment, and operational support. This role requires delivering production-grade systems with...

Nalanda Global in Madrid, Spain, is seeking a Sr Java Backend Engineer to design and evolve scalable backend architecture using Java and Spring Boot. You will join a product engineering team that leverages AI-powered tooling and modern development practices to deliver robust services. You will own complex backend domains, drive technical initiatives, mentor...

Una empresa de tecnología en Madrid busca un/a Backend Engineer senior para diseñar y desarrollar servicios backend desde cero. El candidato ideal tiene más de 5 años de experiencia en desarrollo de sistemas backend, debe tener sólidos fundamentos en diseño de sistemas y modelado de datos. Se requiere comunicación clara y mentalidad pragmática. La...

Dow Jones is seeking a Senior Software Engineer in Barcelona to design, build, and operate reliable, scalable backend services and APIs. You will lead complex features, optimize performance, and work with product, QA, and data teams to deliver high-impact solutions. You will contribute to architecture decisions, mentor junior engineers, and improve...

A global consulting firm is looking for a skilled Backend Developer (Node.js) based in Barcelona, Spain. In this role, you will design and develop scalable backend systems that support high-impact digital solutions for international clients. Ideal candidates have at least 5 years of software engineering experience and proficiency in Node.js with Fastify. The...

Marfeel group is seeking a Backend Engineer in Barcelona to join their high-ownership engineering team. The role requires 5+ years of experience in backend service production, strong proficiency in Node.js and TypeScript, and an understanding of API design and performance optimization. Benefits include flexible working arrangements, subsidized health...

Bark is expanding its engineering team and seeks a Senior Backend Engineer to own backend systems, APIs and data flows in a fast-moving marketplace. You will work across services to implement scalable solutions and contribute to modernising the tech stack as the company transforms. Based in Spain and fully remote, you will collaborate with product and ops to...

Fever is seeking a Senior Software Engineer to join our Engineering team and help build and scale our Python-based stack, CI/CD pipelines, and cloud infrastructure. You’ll contribute to architecture, APIs, and high-performance services in a fast-paced environment. Location: Spain - 100% home-office friendly. You will work with a global platform serving 55+...