Senior Software Engineer, Frontend – Auth Experiences

Affirm

Senior frontend engineer building secure authentication, verification, and fraud experiences for Affirm’s pay-over-time platform. Delivering high-availability systems with React or Vue across web and mobile interfaces.

Posted 9/10/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $173,000 - $233,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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

Demonstrates expertise in full-stack engineering with a focus on developing high-availability web applications using React or Vue, alongside strong leadership in guiding teams through complex technical challenges. Proficient in JavaScript/TypeScript and committed to advocating for quality and ownership in code practices.

Highest-signal resume keywords

Full-Stack EngineeringReact or Vue DevelopmentJavaScript/TypeScript ProficiencyTechnical LeadershipCode Review and Design Standards

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Web Application DevelopmentDeclarative UI FrameworksHigh-Quality Code WritingCodebase ManagementTechnical Planning

Soft Skills

Strong Verbal CommunicationStrong Written Communication

Certifications & Qualifications

Bachelor’s Degree in Related Field

Industry Keywords

High-Availability SystemsLow-Latency SystemsMetrics MonitoringOperational SupportTeam Talent Development

Tech Stack

Tools & technologies

JavaScriptReactTypeScriptVue.js

About the role

Key responsibilities & impact

Work as a full-stack engineer contributing to backend, web, and mobile interfaces
Gain deep understanding of business, product, and engineering context
Own and deliver high-availability, low-latency systems used by Affirm customers
Own and deliver quarterly goals for the team
Lead engineers through ambiguous, open-ended problems and support them throughout delivery
Collaborate with product management, design, and analytics during ideation and decision-making
Articulate technical constraints and evaluate risks and trade-offs
Identify and lead resolution of project, process, technology, and business issues
Create and monitor metrics, escalate issues, and support operational and on-call efforts
Establish or improve code review and design standards
Advocate for quality and ownership through writing and technical talks
Develop team talent through feedback, guidance, and leading by example

Requirements

What you’ll need

4+ years of experience developing and architecting web applications using declarative UI frameworks such as React or Vue
Proficiency in JavaScript/TypeScript
Experience defining technical plans for significant features or system components
Ability to write high-quality, understandable, and reusable code
Proficiency making significant changes in large codebases safely
Experience developing tools and practices to support safe codebase changes
Strong verbal and written communication skills
Either equivalent practical experience or a Bachelor’s degree in a related field

Benefits

Comp & perks

Equity rewards may be included in total compensation
Monthly stipends for health, wellness, and tech spending
Health coverage at no cost: 100% of premiums covered for employees and dependents
Dental and vision coverage for employees and dependents
Flexible time off
Generous holiday calendars
Employee stock purchase plan (ESPP) with discounted Affirm stock
Remote-first work with flexibility within the country of employment
Inclusive interview process and accommodations for candidates with disabilities
In-person onboarding experience for all new hires