Senior Software Engineer - Observability Real User Monitoring (RUM) | US | Remote

Grafana Labs is the company behind the open observability cloud, focusing on providing flexible and scalable observability solutions. The Senior Software Engineer will build and evolve fullstack features for Real User Monitoring, developing systems that handle high-volume user interaction data and ensuring high-quality data ingestion and user experience.

Responsibilities:

• Build and evolve fullstack features for RUM, spanning backend services, APIs, storage systems, and frontend user experiences
• Design and implement systems that ingest, store, and query high-cardinality, high-volume telemetry data using columnar/analytical databases
• Develop performant query layers and APIs that power real-time exploration of user sessions, traces, and events
• Contribute to frontend applications that visualize RUM data, enabling users to debug performance issues and understand user behavior
• Work on data modeling, indexing strategies, and query optimization to ensure low-latency, cost-efficient analytics at scale
• Collaborate closely with SDK engineers (browser and mobile) to ensure high-quality data ingestion and schema evolution
• Own projects end-to-end: from design and implementation to deployment, monitoring, and iteration
• Break down complex, ambiguous problems into incremental deliverables and iterate quickly based on feedback
• Ensure quality through testing, observability of your own systems, documentation, and smooth upgrade paths
• Collaborate cross-functionally with backend, frontend, product, and solutions engineering to deliver cohesive observability workflows
• Support teammates, participate in technical design discussions and help shape the RUM roadmap

Requirements:

• 5+ years of fullstack engineering experience with strong backend fundamentals
• Backend experience (Go is preferred) and frontend experience, we use TypeScript and React
• Experience building or operating distributed systems in production (e.g., Kafka, WarpStream, ClickHouse, Cassandra, Postgres)
• Familiarity with cloud-native systems (Docker, Kubernetes, AWS, GCP, Azure)
• Experience working with high-throughput, high-cardinality data (logs, metrics, traces, events)
• Strong understanding of data modeling, query optimization, and performance tradeoffs
• Experience designing and building APIs and distributed services
• Experience building data-heavy UIs (dashboards, query tools, debugging interfaces)
• Familiarity with observability concepts (traces, logs, metrics) and/or OpenTelemetry
• Strong communication skills and ability to work in a remote, distributed team
• Pragmatic, self-driven, and comfortable navigating ambiguity
• Customer-focused mindset with a passion for developer experience
• Experience with browser or mobile instrumentation (RUM SDKs, telemetry collection)
• Mobile development experience (iOS or Android) or familiarity with mobile performance and telemetry
• Contributions to OpenTelemetry or other observability OSS
• Experience building developer-facing platforms or observability products
• Familiarity with session replay, sampling strategies, or user behavior analytics systems