Senior Software Engineer, Fullstack – App Experience

Affirm

. Break down larger projects into individual tasks and deliver them in multiple phases .

Posted 10/9/2026full-timeRemote • CanadaSenior💰 CA$153,000 - CA$213,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in shipping web and mobile applications using frameworks like React and React Native, along with strong capabilities in API design and development using Kotlin or Python. Proficient in collaborating across teams to deliver projects on time while maintaining high standards of code quality and communication.

Highest-signal resume keywords

Web Application DevelopmentMobile Application DevelopmentAPI Design and DevelopmentCode Review and DebuggingStrong Communication Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

ReactVueReact NativeKotlinPythonAPI DevelopmentDeclarative UI FrameworksCode TestingDebuggingSoftware Engineering

Soft Skills

CollaborationProblem-SolvingFeedback ProvisionVerbal CommunicationWritten Communication

Certifications & Qualifications

Bachelor’s Degree in Related Field

Industry Keywords

Software DevelopmentProject ManagementMetrics MonitoringCross-Team CollaborationTechnical Constraints

Tech Stack

Tools & technologies

KotlinPythonReactReact NativeVue.js

About the role

Key responsibilities & impact

Break down larger projects into individual tasks and deliver them in multiple phases
Collaborate with team members to ensure timely delivery
Collaborate with product management, design and analytics during ideation and decision-making
Articulate technical constraints and assess risks and trade-offs
Create and monitor metrics supporting artifact operations and availability
Escalate issues and support keep-the-lights-on and on-call efforts
Participate in growth and development activities, including interviews
Work on front-end-facing cross-team projects across mobile and web technologies

Requirements

What you’ll need

1.5+ years of experience as a software engineer
Experience shipping web apps using declarative UI frameworks like React or Vue
Experience shipping mobile apps using native or cross-platform languages like React Native
Experience designing, developing and launching APIs at scale using languages like Kotlin or Python
Ability to translate simple problems or business scenarios into solutions involving multiple software components
Ability to write clear, well-tested and extensible code
Comfortable navigating a large code base and debugging others' code
Experience providing feedback through code reviews
Strong verbal and written communication skills
Equivalent practical experience or a Bachelor’s degree in a related field

Benefits

Comp & perks

Monthly stipends for health, wellness and tech spending
100% subsidized medical coverage, dental and vision for employees and dependents
Flexible time off
Generous holiday calendars
Employee stock purchase plan (ESPP) to buy Affirm stock at a discount
Remote-first flexibility
Inclusive interview process and accommodations for candidates with disabilities
In-person onboarding experience for all new hires