Senior Staff Software Engineer, Backend (Data and Storage Services)

About the role

Affirm is building a global, highly‑available infrastructure that powers its buy‑now‑pay‑later products. As a Senior Staff Software Engineer on the Data and Storage Services team, you will shape the architecture of the lakehouse analytics platform and ensure secure, cost‑effective data access at massive scale.

Key responsibilities

• Architect and evolve the lakehouse analytics platform, driving strategy around Snowflake, Apache Iceberg, and Spark.
• Design and implement robust Role‑Based Access Control (RBAC) and dynamic data‑masking policies in Snowflake.
• Lead analytics engineering practices, including data modeling, dbt transformation pipelines, and data‑quality frameworks.
• Drive data‑governance and privacy initiatives using Atlan for cataloging, lineage, classification, and policy enforcement.
• Identify and execute cost‑optimization strategies across compute and storage, including Snowflake warehouse tuning and query optimization.
• Collaborate with product, data‑science, and BI teams to understand data needs and provide architectural guidance.

Required profile

• Senior‑level software engineer with extensive experience in large‑scale data platforms.
• Proven ability to design secure, high‑performance analytics infrastructure.
• Strong track record of leading cross‑functional technical initiatives.

Required skills

• Snowflake
• Apache Iceberg
• Apache Spark
• Role‑Based Access Control (RBAC) and dynamic data masking
• dbt (data build tool)
• Atlan data catalog
• MonteCarlo data‑quality monitoring
• Data governance and privacy engineering
• Cost‑optimization of cloud data warehouses