Software Engineer II, Backend, Consumer Authentication

Affirm

full-time

Posted on: 9/18/2025

Origin: • 🇺🇸 United States • California

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💰 $142,000 - $210,000 per year

JuniorMid-Level

AirflowDistributed SystemsGradleJavaKafkaKotlinKubernetesMavenSpark

About the role

Work on Consumer Authentication team to provide a seamless account creation and access experience for Affirm customers
Secure customer assets and loans by protecting them through several security and fraud levers
Responsible for account recovery and management balancing a frictionless consumer experience with strong protections against accidental and malicious account takeovers
Build optimizations through experimentation and improve conversion metrics
Work closely with Product Manager, Engineering Manager, Technical Leads and other developers to execute projects under the team roadmap
Consistently generate simple and elegant designs and write high-quality, maintainable code
Collaborate with cross engineering teams and other organizations for design, implementation, roll-out and maintenance of projects
Participate in regular scrum meetings like Sprint Planning and Daily Stand ups

2+ years of experience as a backend / server-side software engineer
Proficient in designing, developing and launching backend systems at scale using technologies like Kotlin (or any JVM language), Java
Proficiency in Kotlin and/or Java/JVM and their associated backend ecosystem (Database access, Dependency Injection, Gradle/Maven, testing tooling, etc)
Experience delivering major features, system components or deprecating existing functionality through definition of technical and execution plans
Self driven and motivated engineer who takes pride and ownership in navigating through ambiguities and solving complex technical/organizational problems
Experience designing and building distributed systems and applications, real-time, scalable web services and REST APIs
Experience with data frameworks such as Spark, Kafka, Kubernetes and Airflow
Proficiency in unit & integrating testing
Strong verbal and written communication skills
Humble team-player who participates in development of peers on the team