Experteer Overview
As Staff Engineer on Factorial's DX and Performance team, you will shape how we measure and improve performance and service health across the engineering organization. You’ll partner with product, infrastructure, and DX leaders to raise the bar on observability, load validation, and AI-assisted workflows. The role combines hands-on engineering with technical leadership to drive scalable, reliable systems for 15,000+ customers and 1M+ users. This is a cross-cutting role with broad impact, focused on building robust signals and practices across teams.

Compensaciones / Ventajas
• Define and evolve SLIs and SLOs for critical product journeys
• Standardize observability, dashboards, and service health visibility across teams
• Investigate bottlenecks across application, database, and system layers
• Drive improvements in latency, throughput, scalability, and reliability
• Build more structured load testing workflows for critical paths
• Help teams validate system behavior under realistic traffic and concurrency
• Analyze capacity and behavior under peak load and growth
• Define practices and tooling to prevent performance regressions before production




• Collaborate with product and infrastructure teams to align on performance priorities
• Design AI-assisted workflows to support metric interpretation, anomaly analysis, and incident investigation

Responsabilidades
• Strong hands-on experience improving performance, scalability, and reliability in complex systems
• Experience defining or operating SLIs, SLOs, and service health frameworks
• Strong knowledge of observability practices and tools such as Datadog
• Experience investigating production bottlenecks across application, database, and distributed system layers
• Experience building or improving load testing, benchmarking, or performance validation workflows
• Experience diagnosing tail latency, throughput issues, and performance variability in production
• Broad experience with cloud-based production systems
• Strong communication skills and cross-team alignment
• Proactive mindset and strong ownership mentality

Requisitos principales
• Private health insurance
• Wellhub health and fitness program
• Cobee expense management
• Language classes
• Breakfast in office and organic fruit
• Pet friendly office

📌 Staff Engineer — Performance, Reliability & AI Automation (Barcelona)
🏢 Factorial Hr
📍 Barcelona