Senior Software Engineer Job at Microsoft Corporation (Barcelona)

Senior Software Engineer

Microsoft Corporation

Location:
Spain , Barcelona

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

Ad SDK team builds advanced software development kits that enable seamless integration of advertising solutions into partner applications and platforms, both Microsoft and non-Microsoft. Our goal is to create fast, secure, and developer-friendly SDKs that help partners monetize their products at scale. We tackle tough technical challenges to ensure our solutions run smoothly across different environments, all while pushing the boundaries of ad-serving technology. As a Senior Software Engineer, you'll be hands-on in designing and optimizing SDK components, especially for browsers using JavaScript and TypeScript. You should have a solid understanding of how browsers work under the hood, including rendering pipelines and performance tuning. You'll collaborate with teams around the world to build cross-platform solutions that reach millions of users. Expect to work on innovative features, improve the developer experience, and ensure everything meets high standards for security and privacy.

Job Responsibility:

Collaborates with appropriate stakeholders to determine user requirements for a scenario.
Drives identification of dependencies and the development of design documents for a product, application, service, or platform.
Creates, implements, optimizes, debugs, refactors, and reuses code to establish and improve performance and maintainability, effectiveness, and return on investment (ROI).
Leverages subject-matter expertise of product features and partners with appropriate stakeholders (e.g., project managers) to drive a workgroup's project plans, release plans, and work items.
Acts as a Designated Responsible Individual (DRI) and guides other engineers by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate.
Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale.

Requirements:

Bachelor's Degree in Computer Science or related technical field and technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Additional Information:

Job Posted:
April 05, 2026

Employment Type:

Fulltime

Work Type:

On-site work

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