Grafana Labs - Senior Fullstack Engineer - Observability Real User Monitoring (RUM)

• 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. • We invest heavily in developer productivity. You can use modern AI coding assistants as part of your daily workflow (your choice of tools, within security guidelines), backed by a company-funded usage budget so you can iterate quickly without unnecessary friction. • We encourage pragmatic AI-assisted development: faster prototyping, test generation, refactors, documentation, and incident follow-ups—always paired with strong code review and quality standards. • You’ll also have access to frontier models (e.g., GPT-Codex 5/3, Claude Opus 4.6, Gemini 3 Pro). • What makes you a great fit • 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 c • omfortable navigating ambiguity • Customer-focused mindset with a passion for developer experience • Bonus / nice-to-have • 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.