Staff Engineer - AI-Driven Performance & Reliability

Factorial; Oleiros; Híbrido; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

High growth environment

Alan as private health insurance

Healthy life with Wellhub

Save expenses with Cobee

Language classes

Breakfast in the office

Nora discounts

Free caffeine and theine

Pet Friendly

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 to empower product builders and scale the platform.

You will work with 200+ engineers to define SLOs, standardize observability, and improve system health across product and infrastructure teams, while leading by example in engineering practices and ownership.

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.
• 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.

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 engineering

Observability

SLIs/SLOs

Datadog

Load testing

Cloud systems

Ruby on Rails

GraphQL

TypeScript

Herramientas

Ruby on Rails

GraphQL

TypeScript

Kafka

ClickHouse

MySQL

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 to empower product builders and scale the platform.

You will work with 200+ engineers to define SLOs, standardize observability, and improve system health across product and infrastructure teams, while leading by example in engineering practices and ownership.