Staff Engineer: Performance, Reliability & AI Automation

Factorial; Barcelona; Presencial; EUR 120.000 - 160.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Private health insurance

Wellhub gym access

Cobee benefits

Language classes

Office breakfast

Pet Friendly

Nora discounts

Descripción de la vacante

Factorial is seeking a Staff Software Engineer to join the DX and Performance team in Barcelona, focusing on performance, reliability, observability, load testing, and AI-assisted engineering workflows. You will work with product and infrastructure teams to define SLOs, standardize observability, and validate systems under load, driving improvements across our multi-region cloud architecture.

This cross-cutting role offers hands-on coding, technical leadership, and opportunities to shape how the

Formación

• Strong hands-on experience improving performance, scalability, and reliability in complex software systems.
• Experience defining or operating SLIs, SLOs, and service health frameworks.
• Strong knowledge of observability practices and tools such as Datadog.

Responsabilidades

• Defining and evolving SLIs and SLOs for critical product journeys.
• Improving and standardizing observability, dashboards, and service health visibility across teams.
• Investigating bottlenecks and regressions across application, database, asynchronous, and system layers.
• Driving improvements in latency, throughput, scalability, and reliability.
• Building more structured load testing workflows for critical paths.
• Helping teams validate system behavior under realistic traffic, concurrency, and tenant-scale conditions.
• Analyzing capacity, saturation, and behavior under peak load and growth scenarios.
• Defining practices and tooling to help prevent performance regressions before production.
• Working closely with product and infrastructure teams to align on performance priorities and system behavior under load.
• Designing AI-assisted workflows to support metric and alert interpretation, anomaly analysis, incident investigation, performance insights generation and more.

Conocimientos

Performance

Reliability

Observability

Load testing

AI-assisted workflows

SLIs/SLOs

Datadog

Herramientas

Datadog

Descripción del empleo

Factorial is seeking a Staff Software Engineer to join the DX and Performance team in Barcelona, focusing on performance, reliability, observability, load testing, and AI-assisted engineering workflows. You will work with product and infrastructure teams to define SLOs, standardize observability, and validate systems under load, driving improvements across our multi-region cloud architecture.

This cross-cutting role offers hands-on coding, technical leadership, and opportunities to shape how the