Staff Software Engineer - RUM Platform

Important: At Datadog, we value our office culture – the relationships and collaboration it builds and the creativity it brings. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

What You'll Do

• Design and evolve platform infrastructure that supports frontend observability products across DEM, including RUM, session replay, feature flags, and product analytics.
• Build and scale data pipelines and reducers using technologies such as Kafka and Redis to ingest, transform, and serve real-time user experience data.
• Partner with  SDK, FE and OpenTelemetry contributors to support a growing number of data platforms and open standards in frontend instrumentation.
• Guide cross-functional collaboration by identifying shared patterns and unifying backend infrastructure across multiple product lines.
• Solve ambiguous, high-impact technical problems by applying deep systems knowledge and delivering clear architectural direction.
• Serve as a technical leader and mentor within the RUM organization and broader engineering community at Datadog.

Who You Are

• Experienced in building scalable, distributed backend systems using technologies such as Kafka, Redis, and Java.
• Comfortable managing complex data pipelines and translating diverse data sources into semantically aligned, actionable insights.
• Skilled at navigating ambiguity and driving clarity across multiple teams and product surfaces.
• Familiar with open standards in observability, such as OpenTelemetry, and excited to contribute to a broader ecosystem.
• Proactive and hands-on—you’re ready to dive into unclear problem spaces and turn them into reliable, performant systems.
• Based in Paris or Madrid preferred; other EMEA locations with strong alignment may be considered.
• You have demonstrated ability to use AI coding tools in day-to-day workflows and validate, critique, and refine AI-generated output.
• Bonus: you’re motivated to push the boundaries of how AI can improve software engineering best practices and contribute to building AI-enabled products.

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.