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Senior Software BE Engineer Spain, Barcelona Jobs (On-site work)

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Senior Software Engineer
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Join Microsoft's Search Growth team in Barcelona as a Senior Software Engineer. Design and build scalable, consumer-facing search experiences for Bing using C++, Java, or Python. Drive data-driven decisions through A/B testing in a fast-paced, full-stack environment.
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Spain , Barcelona
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Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
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Until further notice
Senior Software Engineer
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Join Microsoft AI in Barcelona as a Senior Software Engineer. Develop a cutting-edge platform to ground Large Language Models (LLMs) with real-time web data, reducing hallucinations. You'll need expertise in backend technologies like C#/Python and cloud platforms (Azure/AWS). Build scalable, secu...
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Spain , Barcelona
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https://www.microsoft.com/ Logo
Microsoft Corporation
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Until further notice
Explore a world of opportunity in senior software backend engineering jobs, where experienced professionals architect the core logic and services that power modern applications. A Senior Backend Engineer is a pivotal technical leader responsible for designing, building, and maintaining the server-side components, databases, and APIs that form the foundation of software systems. This role goes beyond writing code; it involves making critical architectural decisions that ensure scalability, reliability, security, and performance as user bases grow and data volumes increase. Professionals in these jobs typically own the end-to-end development of robust backend services. Common responsibilities include designing and implementing efficient data models and database schemas, building well-documented and secure RESTful or GraphQL APIs, and developing the business logic that drives application functionality. They are deeply involved in integrating various third-party services, managing authentication and authorization systems, and ensuring data integrity and protection. A significant part of the role is optimizing system performance, diagnosing complex bottlenecks, and planning for scalability, often using cloud-native patterns like microservices, serverless functions, and event-driven architectures. Furthermore, senior engineers are expected to establish and champion best practices in code quality, testing, and deployment, frequently mentoring junior team members and collaborating closely with frontend engineers, DevOps specialists, and product managers. The typical skill set for these senior roles is extensive. Proficiency in one or more backend programming languages such as Python, Java, Go, C#, or Node.js is fundamental. A strong grasp of database technologies, both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, DynamoDB), is essential. Candidates are expected to have hands-on experience with cloud platforms like AWS, Azure, or Google Cloud, and with infrastructure-as-code tools such as Docker and Kubernetes. Understanding CI/CD pipelines, version control with Git, and comprehensive testing strategies are standard requirements. Beyond technical prowess, successful senior backend engineers possess excellent problem-solving abilities, clear communication skills for articulating complex technical concepts, and a proven track record of taking ownership of projects from conception to deployment and iterative improvement. For those with the requisite experience and a passion for building resilient systems, senior software backend engineer jobs offer a challenging and rewarding career path at the heart of technological innovation.

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