Software Engineer II, Backend – Decisions Orchestration

Affirm

. Design the next generation of Affirm’s Checkout Platform .

Posted 10/6/2026full-timeRemote • United StatesMid-LevelSenior💰 $146,000 - $206,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing and implementing APIs and microservice interfaces, with a strong focus on improving system performance and reliability. Proficient in Python and Kotlin, with a proven track record of developing high-quality software at scale.

Highest-signal resume keywords

API DesignMicroservice ImplementationSystem Performance ImprovementPython ProgrammingKotlin Programming

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

API DesignMicroservice ImplementationSystem Performance ImprovementPythonKotlinRedisMySQLAWSGitHubSoftware Development

Soft Skills

Clear CommunicationCollaboration

Tools & Technologies

RedisMySQLAWSGitHub

Industry Keywords

Checkout PlatformFinancial ProductsCustomer TransactionsEngineering StandardsTooling Processes

Tech Stack

Tools & technologies

AWSKotlinMySQLPythonRedis

About the role

Key responsibilities & impact

Design the next generation of Affirm’s Checkout Platform
Build financial products and features that improve accessibility and flexibility for users
Design and implement APIs and microservice interfaces managing customer transactions
Identify opportunities to improve performance and reliability across systems driving the purchasing journey
Design forward-looking approaches to solve large, open-ended problems
Own checkout-system components and define their long-term health
Improve the health of surrounding systems
Collaborate with engineers across the organization to build the next-generation checkout platform
Improve engineering standards, tooling, and processes across the checkout platform

Requirements

What you’ll need

Equivalent practical experience or a Bachelor’s degree in a related field
Proven track record of developing, testing, and shipping high-quality software at scale
Experience designing and implementing APIs and microservice interfaces
Experience improving system performance and reliability
Python
Kotlin
RPC
Redis
MySQL
AWS
GitHub
Clear verbal and written communication
Ability to collaborate with product and engineering leaders and provide peer feedback

Benefits

Comp & perks

Equity rewards may be included in the total compensation package
Monthly stipends for health, wellness and tech spending
100% subsidized medical coverage for employees and dependents
Dental and vision coverage for employees and dependents
Flexible time off
Generous holiday calendars
Employee stock purchase plan (ESPP) to buy Affirm stock at a discount
Inclusive interview process with accommodations for candidates with disabilities
Remote-first work flexibility
In-person onboarding experience