Software Engineer II, Backend – Consumer Authentication

Affirm

full-time

Posted on: 9/18/2025

Origin: • 🇺🇸 United States

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💰 $142,000 - $210,000 per year

JuniorMid-Level

AirflowDistributed SystemsGradleJavaKafkaKotlinKubernetesMavenSpark

About the role

Secure Affirm customer assets and loans by protecting accounts through security and fraud levers.
Responsible for account recovery and management, balancing a frictionless consumer experience with 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 code that can be easily understood and leveraged by others.
Work with cross engineering teams and other organizations for the design, implementation, roll-out and maintenance of projects.
Participate in regular scrum meetings like Sprint Planning and Daily Stand ups.
Design and implement distributed backend systems, real-time scalable web services and REST APIs; contribute to architecture and technical execution plans.

You have 2+ years of experience as a backend / server-side software engineer.
You are 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 is a must (Database access, Dependency Injection, Gradle/Maven, testing tooling, etc).
You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan.
You are a self driven and motivated engineer who takes pride and ownership in navigating through ambiguities and solving complex technical/organizational problems.
You have 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.
You have strong verbal and written communication skills that support effective collaboration with our global engineering team.
You're a humble team-player who places the needs of others first and participates in the development of peers on the team.