Senior Software Engineer, Back-end (Fraud)
Affirm
23 days ago
Remote, Spain
Senior
H1B Sponsor
Responsibilities
- Own and deliver quarterly goals for the team.
- Design and implement backend services and APIs using Python or Kotlin.
- Shape the team’s roadmap and drive execution across projects.
- Collaborate with the Engineering Manager to elevate quality standards.
- Build scalable fraud tooling and infrastructure with cross-functional teams.
- Identify opportunities to improve system reliability and team efficiency.
- Maintain high observability standards and respond to incidents.
- Mentor teammates and uphold high code and design standards.
Requirements
- 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 services.
- Proficiency in SQL and working with data-rich environments.
- Familiarity with CI/CD practices and safe production deployments.
- Strong written and verbal communication skills, especially in distributed teams.
- A proactive, ownership-driven mindset with a focus on learning and team success.
- Experience with Snowflake, dbt, Airflow, or Chronosphere is a plus.
- Background in fraud prevention, risk systems, or post-transaction tooling is a plus.
- Experience in the fintech sector or regulated environments is a plus.
Benefits
- 100% subsidized medical coverage, dental and vision for you and your dependents.
- Flexible Spending Wallets for tech, food, and lifestyle.
- Wellness days to recharge.
- Learning & Development programs.
- Parental benefits.
- Employee Resource & Community Groups.
- Employee stock purchase plan enabling you to buy shares at a discount.
Tech Stack
Apache AirflowAWSdbtKotlinKubernetesMySQLPostgreSQLPythonSnowflakeSQL
Categories
Backend