Staff Engineer: Performance, Reliability & AI Automation

Factorial; Madrid; Presencial; EUR 110.000 - 140.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

High growth environment

Private health insurance

Wellhub benefits

Cobee

Language classes

Free caffeine and tea

Pet Friendly

Descripción de la vacante

Factorial is seeking a Staff Software Engineer for the DX and Performance team, focusing on performance, reliability, observability, load testing, and AI-assisted engineering workflows. The role centers on building scalable, observable systems with 200+ engineers and cross‑team collaboration in Barcelona.

You’ll help define SLIs/SLOs, standardize dashboards, and drive improvements across product and infrastructure teams, raising the bar for performance and reliability at scale.

Formación

• Proven experience improving performance, scalability, and reliability in complex systems.
• Experience defining or operating SLIs/SLOs and service health frameworks.
• Strong observability knowledge and experience with Datadog.
• Experience identifying production bottlenecks across app, DB, and distributed layers.
• Experience building load testing and performance validation workflows.

Responsabilidades

• Define and evolve SLIs and SLOs for critical product journeys.
• Standardize observability and service health visibility across teams.
• Investigate bottlenecks and regressions across application, database, asynchronous, 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, concurrency, and tenant-scale conditions.
• Analyze capacity, saturation, and behavior under peak load and growth scenarios.
• Define practices and tooling to prevent performance regressions before production.
• Collaborate with product and infrastructure teams to align on performance priorities and system behavior under load.
• Design AI-assisted workflows to support metric and alert interpretation, anomaly analysis, incident investigation, performance insights generation and more.

Conocimientos

Performance engineering

SLIs/SLOs

Observability

Bottleneck analysis

Load testing

Tail latency

Cloud platforms

Technical communication

Ownership mindset

Herramientas

GraphQL

Ruby on Rails

TypeScript

MySQL

ClickHouse

Kafka

Descripción del empleo

Factorial is seeking a Staff Software Engineer for the DX and Performance team, focusing on performance, reliability, observability, load testing, and AI-assisted engineering workflows. The role centers on building scalable, observable systems with 200+ engineers and cross‑team collaboration in Barcelona.

You’ll help define SLIs/SLOs, standardize dashboards, and drive improvements across product and infrastructure teams, raising the bar for performance and reliability at scale.