Senior Software Engineer, Back-end (Fraud)
Affirm
23 days ago
Remote, Poland
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 collaborate on technical design.
- Partner with the Engineering Manager to elevate quality standards.
- Collaborate with stakeholders to build scalable fraud tooling.
- Identify opportunities to improve system reliability and efficiency.
- Maintain high observability standards and respond to incidents.
- Mentor teammates and uphold high code and design standards.
- Participate in the on-call rotation.
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 with 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 in distributed teams.
- Proactive, ownership-driven mindset focused on learning and team success.
- Experience with Snowflake, dbt, Airflow, or Chronosphere is a plus.
- Background in fraud prevention or risk systems 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 and Development programs.
- Parental benefits.
- Employee Resource and Community Groups.
- Employee stock purchase plan enabling you to buy shares at a discount.
Tech Stack
Apache AirflowAWSdbtKotlinKubernetesMySQLPostgreSQLPythonSnowflakeSQL
Categories
BackendDevOps