Senior Backend Engineer, Fraud – Real-Time Risk (Remote)

Affirm

España

A distancia

EUR 90.000 - 130.000

Jornada completa

hace 34 horas
Sé de los primeros/as/es en solicitar esta vacante
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Ventajas ofrecidas por este puesto de trabajo

100% health coverage for you and your/
Equity rewards
Visa sponsorship possible
Remote-first with flexible in Spain

Descripción de la vacante

Afffirm is hiring a Senior Software Engineer to own backend systems for fraud decisioning. You’ll design real-time services in Python or Kotlin, integrate regional vendors, and scale launches across new markets from a remote Spain base.

You’ll collaborate with teams in product, ML, analytics, and fraud strategy, shaping architecture, reliability, and AI-assisted development in a fast-growing fintech environment.

Formación

  • 5+ years of experience building backend systems at scale using Python or Kotlin.
  • Experience with distributed systems and infrastructure using AWS, MySQL/PostgreSQL, and Kubernetes.
  • Strong system design skills and a track record of delivering maintainable, extensible services.
  • Fluency with AI-driven engineering and tooling usage in development.
  • Proficiency in SQL and working with data-rich environments.
  • Familiarity with CI/CD practices and safe production deployments.
  • Strong written and verbal communication skills in distributed teams.
  • Experience with Snowflake, dbt, Airflow, Chronosphere is nice to have.
  • Background in fraud prevention, risk systems, or real-time decisioning is nice to have.
  • Experience building for multiple markets or regions - internationalization or localization is nice to have.

Responsabilidades

  • Own and deliver quarterly goals for your team, guiding engineers through ambiguity.
  • Design and implement real-time fraud decisioning services and APIs in Python or Kotlin.
  • Build and evolve the platform to launch fraud decisioning in new markets quickly.
  • Integrate region-specific fraud and risk vendors and operationalize AI signals.
  • Collaborate with product, ML, analytics, and fraud strategy across the development lifecycle.
  • Maintain service reliability through monitoring, on-call involvement, and incident response.
  • Foster a culture of quality, code review, and mentorship.
  • Participate in on-call rotations as a requirement.

Conocimientos

Python
Kotlin
AWS
MySQL/PostgreSQL
Kubernetes
SQL
CI/CD
Distributed systems
AI/ML tooling
English communication

Herramientas

Snowflake
dbt
Airflow
Chronosphere

Descripción del empleo

Afffirm is hiring a Senior Software Engineer to own backend systems for fraud decisioning. You’ll design real-time services in Python or Kotlin, integrate regional vendors, and scale launches across new markets from a remote Spain base.

You’ll collaborate with teams in product, ML, analytics, and fraud strategy, shaping architecture, reliability, and AI-assisted development in a fast-growing fintech environment.

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