Staff Software Engineer - RUM Platform

Requirements:

• 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.

What You'll Be Doing:

• 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.

Perks and Benefits:

• New hire stock equity (RSUs) and employee stock purchase plan (ESPP)
• Continuous professional development, product training, and career pathing
• Intradepartmental mentor and buddy program for in-house networking
• An inclusive company culture, ability to join our Community Guilds (Datadog employee resource groups)
• Competitive global benefits
• Giving programs