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Senior Engineer (Backend) Spain Jobs

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Senior Backend Engineer - Health Profile team
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Join our Barcelona-based Health Profile team as a Senior Backend Engineer. Develop core, scalable products in PHP/Symfony within a distributed system, focusing on patient data accessibility and features like Care Circle. We offer a remote/hybrid model, flexible hours, and a comprehensive benefits...
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Spain , Barcelona
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Not provided
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Gipo
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Until further notice
Senior LLM Backend Engineer
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Join our team as a Senior LLM Backend Engineer and shape the future of AI-powered products. You will design, build, and optimize scalable LLM integrations using Python in a fully remote role based in Spain. We offer a personal development budget and the chance to solve cutting-edge problems in a ...
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Spain
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Not provided
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Bark
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Senior Backend Engineer
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Join our dynamic team in Spain as a Senior Backend Engineer. Develop scalable product features using Python, modern APIs, and cloud technologies like Docker/Kubernetes. You will design high-transaction systems, mentor engineers, and shape our tech strategy. We value innovation in a fast-paced env...
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Spain
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Not provided
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Bark
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Senior Backend Engineer - Data Ingestion
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Join our team in Spain as a Senior Backend Engineer, focusing on Data Ingestion at petabyte scale. You will design robust ETL pipelines in Golang, working with distributed systems and cloud-native architecture. Enjoy a flexible work environment, equity, healthcare contributions, and global gather...
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Spain
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Not provided
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ClickHouse
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Senior Backend Engineer
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Join Hostaway's Core team in Barcelona as a Senior Backend Engineer. You will design critical integrations with major OTAs using PHP and Go within a modern, event-driven architecture. This 100% remote role offers stock options, professional growth, and the chance to shape key technical solutions ...
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Spain , Barcelona
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Not provided
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Hostaway
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Senior Backend Engineer
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Join Job&Talent in Madrid as a Senior Backend Engineer. Design and scale Kotlin-based distributed systems powering a major staffing platform. Own the full feature lifecycle for applications serving millions of users daily. Enjoy competitive pay, meaningful benefits, and a chance to impact global ...
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Spain , Madrid
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Not provided
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InStaff
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Senior Backend Engineer
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Join our team in Barcelona as a Senior Backend Engineer. Develop scalable Java/Spring Boot microservices for our high-traffic mobility platform. Enjoy a collaborative environment, work-from-anywhere flexibility, and competitive compensation.
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Spain , Barcelona
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Not provided
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Adevinta
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Senior Backend Engineer — Customer Data Platform (CDP)
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Join our Barcelona team as a Senior Backend Engineer for the core Customer Data Platform (CDP). Design and own scalable backend systems, data pipelines, and APIs that power personalization for millions. We seek an engineer who enjoys architectural ownership, improving high-throughput systems, and...
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Spain , Barcelona
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Bsport
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Senior Backend Engineer
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Join our new Barcelona engineering hub as a Senior Backend Engineer. Shape the future of recruiting software using modern tech like TypeScript, RDBMS, and message brokers. Enjoy a competitive salary, Apple hardware, hybrid remote work, and relocation support.
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Spain , Barcelona
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join.com
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Senior Backend Engineer
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Join Fever's Data Department as a Senior Backend Engineer in Madrid or Barcelona. Architect scalable Python microservices and robust Kafka event streams at the intersection of software engineering and AI. We seek experts in Hexagonal Architecture, SQL, and building fault-tolerant systems. Enjoy s...
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Spain , Madrid or Barcelona
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50000.00 - 70000.00 EUR / Year
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Fever
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Senior Backend Engineer
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Join our Barcelona hub as a Senior Backend Engineer, developing core health data products for patient engagement. You'll design innovative features like Care Circle using PHP, Symfony, and cloud technologies within an Agile/XP environment. Enjoy a remote/hybrid model, flexible hours, share option...
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Spain , Barcelona
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DocPlanner GmbH
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Explore Senior Engineer (Backend) Jobs and discover a pivotal career at the heart of technology innovation. A Senior Backend Engineer is a seasoned professional responsible for designing, building, and maintaining the server-side logic, databases, and application programming interfaces (APIs) that power modern web and mobile applications. This role is critical for ensuring scalability, performance, reliability, and security for millions of users. Professionals in these jobs move beyond basic coding to tackle complex architectural challenges, making high-level decisions that shape the technological foundation of a product or service. Typical responsibilities for senior backend engineers include architecting and developing robust distributed systems, designing efficient and scalable APIs, and managing data storage solutions. They are deeply involved in the entire software development lifecycle, from conceptualization and technical design to deployment and ongoing optimization. A key aspect of the role is leading major technical initiatives, breaking down large projects into manageable deliverables, and mentoring mid-level and junior engineers. Senior engineers also champion best practices, conducting thorough code reviews, advocating for clean and maintainable code, and implementing robust testing and monitoring strategies. The common skill set and requirements for senior backend engineer jobs are extensive. Expertise in one or more backend programming languages such as Java, Python, Go, C#, or Ruby is fundamental. A deep understanding of system design principles, including microservices architecture, database management (both SQL and NoSQL), and cloud platforms (AWS, Azure, GCP), is essential. These roles demand strong problem-solving abilities, a data-driven mindset for decision-making, and a focus on creating secure systems. Seniority is characterized by autonomy, the ability to drive projects to completion, and a proactive approach to collaborating with product managers and other engineering teams to align technical execution with business goals. Success in these positions also requires excellent communication skills to explain complex technical concepts and a commitment to continuous learning in a rapidly evolving field. If you are an experienced developer seeking to leverage your technical leadership and deep architectural knowledge, browsing senior backend engineer jobs is your next step. This career path offers the opportunity to build foundational technology that drives user experience and business success, providing a challenging and rewarding environment for top engineering talent.

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